In this role, you will lead the development of a comprehensive High Temperature Operating Life (HTOL) Test Software system. Your work will involve designing, implementing, and maintaining a scalable multi-chassis testing platform that performs automated stress and performance testing with real-time monitoring and comprehensive data collection capabilities.

Responsibilities

• System Design & Development: Architect, build, and maintain scalable architecture for a multi-chassis HTOL testing system.
• Orchestration: Develop containerized applications for deployment at scale using Python-based services for chassis coordination and management.
• Hardware Monitoring & Management: Create hardware abstraction layers and develop APIs that represent hardware systems, providing essential capabilities for monitoring and management of those systems.
• Manage Data: Develop data collection pipelines handling sensor data and performance metrics.
• Deploy and Update Software: Create automated deployment and testing pipelines using CI/CD best practices.
• Collaboration with Front-End Teams: Work closely with the frontend team to ensure seamless integration of backend APIs with applications.
• Testing & Documentation: Write automated tests to monitor the reliability and performance of the system; maintain clear and concise documentation for troubleshooting.
• Performance and Reliability: Continuously monitor and optimize performance to reduce response times and improve system scalability; ensure uptime in production environments; establish capacity planning procedures.

Required Skills

• BS and 12+ years of experience or MS and 8+ years of experience; degree in Computer Science, Electrical Engineering, or related field.
• Expert level Python, knowledge of web frameworks such as FastAPI, Flask, Django; strong understanding of API design principles and best practices.
• Experience with containerization and orchestration technologies such as Docker and Docker Compose.
• Experience with one or more databases such as MongoDB, PostgreSQL, Redis, time-series databases.
• Familiarity with testing frameworks such as pytest and integration testing, performance testing tools.
• Experience with CI/CD tools such as GitHub Actions/Runners and Infrastructure as Code tools such as Ansible.
• Experience with hardware integration or embedded systems; interfacing with BMCs, FPGAs, temperature sensors, thermal management, power management systems.

Nice-to-have skills

• Familiarity with real-time data handling and communication protocols, such as gRPC, TCP/IP, WebSockets, message brokers or similar technologies.
• Experience with high-availability, mission-critical systems.
• Experience in the Semiconductor Industry: HTOL, wafer-level testing, burn-in systems, reliability testing.
• Professional Certifications: Agile/Scrum certifications.
• Experience building backend services for web applications like Next.js, proficiency in JavaScript/TypeScript.

We are hiring a talented software engineer to help us build the next generation of photonic AI processors and interconnects. In this role, you will be responsible for developing and extending the device software and firmware stack for Photonic Compute and Photonic interconnect products. You will collaborate with other software teams and hardware systems teams to develop security, telemetry, virtualization, and remote administration functionality.

Responsibilities

• Collaborate across a multidisciplinary team including Photonic, Analog, Digital, Systems and Network experts to define control plane architecture for Lightmatter's photonic interconnect products.
• Define diagnostics and monitoring architecture for photonic transceivers.
• Integrate with DataCenter administration capabilities using environments such as CMIS, OpenBMC and DMTF.
• Debug and troubleshoot embedded systems using tools such as GDB, JTAG, and logic analyzers.
• Participate in customer engagements to gather requirements and usability criteria.

Qualifications

• BS and 8+ years of experience, or MS and 6+ years of experience.
• Degree in Computer Science, Electrical Engineering, Robotics, or a related technical field.
• Industry experience with device driver and kernel side development.
• Strong understanding of hardware-software integration.
• Practical knowledge of communication and control in embedded systems, peripherals, and buses.
• Experience with developing commercial/enterprise-level software and firmware on Linux.
• Experience with Git and CMake for building and managing software projects.
• Hands-on experience designing, simulating, or deploying control of autonomous systems.

Preferred Qualifications

• Proficiency with Python or C++.
• Familiarity with debugging tools such as GDB, JTAG, and logic analyzers.
• Experience developing firmware for photonic transceivers or similar systems.
• Experience with environments such as CMIS, OpenBMC and DMTF.
• Experience with optical communication systems and technologies.

We are hiring a talented software engineer to help us build the next generation of photonic AI processors and interconnects. In this role, you will be responsible for developing and extending the device software and firmware stack for Photonic Compute and Photonic interconnect products. You will collaborate with other software teams and hardware systems teams to develop security, telemetry, virtualization, and remote administration functionality.

Responsibilities

• Collaborate across a multidisciplinary team including Photonic, Analog, Digital, Systems and Network experts to define control plane architecture for Lightmatter's photonic interconnect products.
• Define diagnostics and monitoring architecture for photonic transceivers.
• Integrate with DataCenter administration capabilities using environments such as CMIS, OpenBMC and DMTF.
• Debug and troubleshoot embedded systems using tools such as GDB, JTAG, and logic analyzers.
• Participate in customer engagements to gather requirements and usability criteria.

Qualifications

• BS and 8+ years of experience, or MS and 6+ years of experience.
• Degree in Computer Science, Electrical Engineering, Robotics, or a related technical field.
• Industry experience with device driver and kernel side development.
• Strong understanding of hardware-software integration.
• Practical knowledge of communication and control in embedded systems, peripherals, and buses.
• Experience with developing commercial/enterprise-level software and firmware on Linux.
• Experience with Git and CMake for building and managing software projects.
• Hands-on experience designing, simulating, or deploying control of autonomous systems.

Preferred Qualifications

• Proficiency with Python or C++.
• Familiarity with debugging tools such as GDB, JTAG, and logic analyzers.
• Experience developing firmware for photonic transceivers or similar systems.
• Experience with environments such as CMIS, OpenBMC and DMTF.
• Experience with optical communication systems and technologies.

We are hiring a talented software engineer to help us build the next generation of photonic AI processors and interconnects. In this role, you will be responsible for developing and extending the device software and firmware stack for Photonic Compute and Photonic interconnect products. You will collaborate with other software teams and hardware systems teams to develop security, telemetry, virtualization, and remote administration functionality.

Responsibilities

• Collaborate across a multidisciplinary team including Photonic, Analog, Digital, Systems and Network experts to define control plane architecture for Lightmatter's photonic interconnect products.
• Define diagnostics and monitoring architecture for photonic transceivers.
• Integrate with DataCenter administration capabilities using environments such as CMIS, OpenBMC and DMTF.
• Debug and troubleshoot embedded systems using tools such as GDB, JTAG, and logic analyzers.
• Participate in customer engagements to gather requirements and usability criteria.

Qualifications

• BS and 8+ years of experience, or MS and 6+ years of experience.
• Degree in Computer Science, Electrical Engineering, Robotics, or a related technical field.
• Industry experience with device driver and kernel side development.
• Strong understanding of hardware-software integration.
• Practical knowledge of communication and control in embedded systems, peripherals, and buses.
• Experience with developing commercial/enterprise-level software and firmware on Linux.
• Experience with Git and CMake for building and managing software projects.
• Hands-on experience designing, simulating, or deploying control of autonomous systems.

Preferred Qualifications

• Proficiency with Python or C++.
• Familiarity with debugging tools such as GDB, JTAG, and logic analyzers.
• Experience developing firmware for photonic transceivers or similar systems.
• Experience with environments such as CMIS, OpenBMC and DMTF.
• Experience with optical communication systems and technologies.

 The Product Engineer role is pivotal to Lightmatter’s mission, sitting at the center of product delivery and operational excellence. This position offers a unique opportunity for end-to-end ownership, where you will define the product engineering landscape from the ground up and drive the strategic direction for our hardware portfolio. You will collaborate with cross-functional teams (design, foundry, packaging, test, validation, reliability) to optimize manufacturing flows, improve yield and quality, and reduce costs. The role's focus areas include: optimizing Yield & Quality, implementing DFx principles, and managing the product from initial silicon to high-volume manufacturing (HVM). The core responsibilities are specifically centered on optimizing manufacturing flows, yield Improvement, and Test Point Optimization.

• Strategic Ownership: Own the product's success by managing yield and quality indicators from first silicon to high-volume manufacturing (HVM).
• Manufacturing Excellence: Define manufacturing and test strategies, including DFT implementation, test hardware specs, and test program creation.
• Yield & Cost Optimization: Drive continuous improvement in quality, yield, and cost by reducing test time, eliminating test sockets, closing test holes (DPM reduction), and increasing yield through root cause analysis with cross-functional teams (design, fab, packaging).
• Hands on leadership: Debug test, yield, and power/performance issues.
• Guiding Light: Lead multi-disciplinary teams (Design, Foundry, Packaging, Supply Chain, etc.) to resolve product issues and continuously improve team tools and methods.

Qualifications

• Master’s in Computer Science,Electrical Engineering, Physics, Material Science or a related field
• A minimum of 5+ years experience in semiconductor industry as a product engineer, with a cumulative of 12 years of relative industry experience
• Experience developing DFT strategy
• Experience developing test plans
• Familiarity with advanced packaging flows
• Familiarity with ATE Test area equipment and methodology
• Experience partnering with OSATs to develop manufacturing test flows for CMOS or Optical transceiver products
• Excellent communication skills with ability to present complex technical information clearly and concisely
• Demonstrated ability to influence senior company leadership and partner with vendors and customers
• Familiarity with statistical analysis & data acquisition tools such as JMP, Snowflake

Preferred:

• Experience partnering with a OSAT to develop manufacturing test flows for Co-Packaged Optics technology
• Programming or scripting: Python, C, Java, Ruby, SQL, or shell scripting 

The salary range for this position reflects two distinct internal levels. The lower half of the range applies to candidates meeting the core requirements, while the upper half is reserved for those who bring the additional specialized experience or extensive years of experience required for our senior-level designation.

We are hiring a Head of Chip Architecture, you will collaborate with both external partners and internal engineering teams to develop and deliver innovative, high-volume photonics products. In this role, you will define advanced chip architectures for co-packaged optics, working closely with cross-disciplinary teams to model, analyze, and optimize system performance. Success in this role requires deep domain expertise in silicon photonics, high-frequency (50+ GHz) electro-optic interfaces, lasers, optical amplifiers, fiber-optic communications, and packaging/assembly techniques. Strong analytical problem-solving, effective communication, and technical leadership are essential. You will be expected to be the primary technical liaison for key customers, partners, and internal stakeholders. You will also represent Lightmatter’s at premier industry conferences.

Join a tight-knit team where each individual’s contributions directly influence the success of the company and product. You'll have the opportunity to build a new kind of computer from the ground up and to solve groundbreaking challenges along the way. Work with people who love to build and who thrive in technically diverse environments where great ideas are prioritized.

Responsibilities: 

• Guide, coach, and mentor a team of chip architects from different domains: photonics, digital, and analog. 
• Define chip architectures for datacenter/AI compute optical interconnect demonstrations and products. 
• Lead the co-optimization of SerDes, analog front ends, and optical transceivers to achieve best-in-class performance in terms of performance, energy efficiency, and costs.
• Work with other engineering leaders to plan, set, and execute on development, tapeout, and validation timelines.
• Provide technical leadership to cross-functional engineering teams.
• Represent the architecture team in executive-level reviews, industry forums, and customer negotiations.
• Act as the primary technical liaison for key customers, partners, and stakeholders regarding our current chip’s architecture and future roadmap.
• Drive the technical selling process by clearly articulating the competitive advantages, performance metrics, and cost benefits to both technical and non-technical customers.
• Communicate complex technical concepts clearly to both technical and non-technical stakeholders.
• Partner with the Product and Sales teams to define next-generation photonic products.
• Research and evaluate emerging optical interconnect technologies, and drive technology roadmaps aligned with market trends and strategic objectives.
• Develop new IP. Publish technical findings at top journals and share our technical expertise at conferences.
• Be Lightmatter’s ambassador. 

This is not a complete listing of the responsibilities. It’s a representation of the things you will be doing 

Qualifications: 

• A Ph.D. degree in Electrical Engineering, Applied Physics, or a related field with 10+ years of relevant experience and leading teams.
• Must have managerial experience 
• Strong track record in managing teams and helping them grow and achieve at the highest level.
• Deep technical knowledge in photonic/AMS chip co-design.
• Proven success in developing, taping out, and bringing-up state-of-the-art photonic/AMS chips and system solutions.
• Proven track record of successfully taking at least two chip architectures from concept to high-volume production.
• Demonstrated experience serving as a primary technical point of contact with major external customers, partners, or vendors.
• Proven ability to translate complex technical concepts into compelling business value propositions for executive and non-technical audiences.
• Strong track record of planning and driving complex projects to completion.
• Ability to work cross-functionally with other organizations to achieve company-wide goals.
• Deep understanding of market trends and application of optical interconnects.
• Must to travel 30% of the time 

Preferred Qualifications:

• World-class technical leadership: demonstrated absolute technical and people excellence. 
• Strong track record of innovation in photonics as evidenced by patents and publications.
• Demonstrated creative problem-solving skills for problems that have no obvious solutions.
• Strong publication record and public speaking experience.
• Ability to retain and attract new talent.
• Executing R&D for product and market needs.
• Willingness to engage and learn quickly to ensure mission success. Self-starter with a “no task is too big or small” attitude.

About this Role

Join a cutting-edge team at the forefront of silicon photonics and high-speed transceiver design! As a member of the analog team, you’ll collaborate with our architects and engineers to develop innovative high-speed analog transceiver solutions for next-generation optical and wireline communication systems.

* We are currently hiring for multiple levels for this role. Your level and compensation will be determined by your experience, education, and location.

Responsibilities

• Support micro-architecture development with chip architects by conducting feasibility studies
• Collaborate with members of our design engineering teams (system, digital, analog, photonics) to define electrical requirements
• Design analog/mixed-signal blocks with a focus on transceivers and broadband circuits interfacing with silicon photonics elements
• Document design simulations and verifications towards formal design reviews
• Drive block-level floorplan, mask design views, and their reviews
• Run post-layout and mixed-signal top-level simulations to validate integration
• Define production and bench-level test plans
• Validate performance of the circuits in the lab

Qualifications

• MS with 6+ years of industry experience, OR Ph.D. with 3+ years of industry experience
• Experience designing in either GHz-speed RF or GHz-speed broadband analog design
• Experience with Tx/Rx equalization techniques and circuits
• Familiarity with SERDES architectures and implementations
• Solid understanding of CMOS device characteristics, noise, linearity, high-frequency circuit theory and design trade-offs
• Experience with Cadence Design Environment
• Ability to work collaboratively with people across multiple functional areas

Preferred Qualifications

• Experience designing Analog-Front-End blocks for transceiver circuits such as trans-impedance amplifiers (TIA) and Tx Driver
• Knowledge of 3D Electro-Magnetic (EM) simulation tools is a plus
• Experience with testing and validating high-speed analog/mixed-signal circuits
• Experience interfacing with silicon photonic modulators (MZM, Ring) is a plus
• Successful track record in delivering analog/mixed-signal IPs with 1st-time success while meeting tight schedules

#LIF-FM1

About this Role

Join a cutting-edge team at the forefront of silicon photonics and high-speed transceiver design! As a member of the analog team, you’ll collaborate with our architects and engineers to develop innovative high-speed analog transceiver solutions for next-generation optical and wireline communication systems.

Responsibilities

• Design high-performance and high-speed AMS circuits with a focus on transceivers and broadband circuits interfacing with silicon photonics elements
• Investigate and evaluate new Analog & Mixed-Signal circuit topologies with chip architects
• Lead the discussions with multi-functional teams (system, digital, analog, photonics) to create and drive block-level specifications, mixed-signal implementations, and behavioral modeling
• Document design simulations and verifications towards formal design reviews
• Drive block-level floorplan, mask design views, and their reviews
• Run post-layout and mixed-signal top-level simulations to validate integration
• Define production and bench-level test plans
• Validate performances of the circuits in the lab
• Mentor junior design engineers

Qualifications

• MS with 12+ years of industry experience, OR Ph.D with 10+ years of industry experience designing in either GHz-speed RF or GHz-speed broadband analog design
• Experience designing Analog-Front-End blocks for SerDes
• Experience and deep understanding of Tx/Rx equalization techniques and circuits
• Excellent understanding of CMOS device characteristics, noise, linearity, high-frequency circuit theory and design trade-offs
• Proven experience working with system and architecture teams to drive block-level and IP requirements
• Experience in Analog Mixed Signal circuit modeling and performance evaluation (e.g., SystemVerilog, Matlab, Python, VerilogAMS)
• Experience with 3D Electro-Magnetic (EM) simulation tools
• Prior experience in leading or mentoring junior design engineers
• Ability to work collaboratively with people across multiple functional areas

Preferred Qualifications

• Experience designing Analog-Front-End blocks for transceiver circuits such as trans-impedance amplifiers (TIA) and Tx Driver
• Experience interfacing with silicon photonic modulators (MZM, Ring)
• Hands-on design experience in advanced CMOS technologies, such as FinFET
• Successful track record in delivering analog/mixed-signal IPs with 1st-time success while meeting tight schedules

This unique opportunity focuses on defining the control plane architecture for next-generation photonic interconnect products and implementing active laser control and stabilization algorithms. You will leverage your proven history of shipping embedded systems at scale to deliver products that enable extreme-scale artificial intelligence computing clusters. Your expertise will make a profound and visible impact on the business by directly enabling the next generation of computing technology.

Responsibilities

• Collaborate across a multidisciplinary team including Photonic, Analog, Digital, Systems and Network experts to define control plane architecture for Lightmatter's photonic interconnect products.
• Define diagnostics and monitoring architecture for photonic transceivers.
• Implement active laser control and stabilization algorithms in collaboration with a cross-functional design team.
• Integrate with DataCenter administration capabilities using environments such as CMIS, OpenBMC and DMTF.
• Debug and troubleshoot embedded systems using tools such as GDB, JTAG, and logic analyzers.
• Debug and troubleshoot lasers using optical test and measurement equipment.
• Participate in customer engagements to gather requirements and usability criteria.

Qualifications

• BS and 8+ years of experience, or MS and 6+ years of experience.
• Degree in Computer Science, Electrical Engineering, Robotics, or a related technical field.
• Proven history of shipping embedded software in customer-facing devices at-scale.
• Strong understanding of hardware-software integration.
• Practical knowledge of communication and control in embedded systems, peripherals, and buses.
• Experience with developing commercial/enterprise-level software and firmware on Linux.
• Experience with Git and CMake for building and managing software projects.
• Hands-on experience designing, simulating, or deploying control of autonomous systems.

Preferred Qualifications

• Proficiency with Python or C++.
• Familiarity with debugging tools such as GDB, JTAG, and logic analyzers.
• Experience developing firmware for photonic transceivers or similar systems.
• Experience with environments such as CMIS, OpenBMC and DMTF.
• Experience with optical communication systems and technologies.
• Knowledge of laser physics and control techniques.
• Has experience leading small teams and mentoring junior engineers.
• Familiarity with optical test and measurement and methodologies for characterizing optical components and systems.

We are now looking for an outstanding Field Application Engineer - High-speed I/O Specialist to join our team. The role’s primary responsibility is to work collaboratively with customers in architecting the next generation of devices enabled by Lightmatter’s photonic interconnect technology Passage. In this role, you will work closely with Tier 1 Semiconductor companies that are defining the next generation of silicon in the data center. You will be working cross functionally within Lightmatter as you define an optimal technical solution. Additionally, you will be collaborating with customers who are domain experts in high-speed serial links (SerDes) and protocols. You should be comfortable supporting deep technical discussions focused on high-speed serial I/O design. Excellent interpersonal skills and the ability to work independently are essential to being successful in the role. 

Responsibilities

• Provide the full technical support of the customer HSIO design, including the early technical assessment, design scheme discussion, hardware design review, hardware debug support and other critical trouble shootings
• Develop and deliver technical proposals to customers, based on customer’s technical requirements and system architecture
• Work as the field expert on HSIO area, to provide the in-depth training and guidance of the HSIO design to the FAE team, to create and share the related technical articles and reference designs
• Work collaboratively with Lightmatter Engineering in supporting customer design wins and communicating progress updates to customer engineering leads

Requirements

• BS or MS in Engineering, Mathematics, Physics, or Computer Science (or equivalent experience).
• 10+ years of work related experience in a high-tech electronics industry with high-speed serial I/O design, including transceiver architecture, CDR, DFE or other 
• In-depth knowledge of the signal integrity, power integrity simulation and the related hardware design. Be familiar with the SI/PI EDA simulation tools and models, eg. Keysight ADS.
• Customer facing skill-set and background as well as the ability to communicate effectively with customers
• Action-oriented with strong analytical and problem-solving skills
• Previous experience developing and delivering technical presentations to both executive management and cross-functional engineering teams and external clients
• Built trusted working relationships across teams, improving coordination and execution speed
• Experience working with silicon photonics and/or optical transceiver
• In-depth knowledge of semiconductor and laser technology

Preferred Qualifications

• Familiar with the digital signal processing theory and the related tools, like Matlab Simulink.
• Analog signal and mixed signal design, ADC, DAC design experience
• C, C++ and other software experience
• Experience working in customer facing role acting as the domain expert for silicon photonics/optics
• Experience deploying or supporting customers who are deploying optics in a data center environment at scale
  
  

We are hiring a Photonics Technical Lead to join our laser development team. In this role, you will develop integrated and highly scalable laser solutions for silicon photonics AI communications and computation. You will work closely with cross-disciplinary engineering teams both internally and across our ecosystem of manufacturing partners to assess the technical feasibility of product requirements, develop an engineering plan to meet architectural specifications, execute new product designs for laser solutions, and validate system performance on hardware.

This role requires a deep understanding of complex multi-domain platforms as well as integrated silicon photonics and the requirements of datacom systems. You will navigate the design space of performance, schedule, reliability, power consumption, and cost, working in tandem with stakeholders across the company to identify optimal and innovative engineering solutions. Creativity, analytical skills, and clear communication skills are a necessity. 

Join a tight-knit team where each individual’s contributions directly influence the success of the company and product. You'll have the opportunity to build innovative laser solutions from the ground up and tackle groundbreaking challenges. Work with people who love to build and who thrive in diverse technical environments where great ideas are prioritized.

Responsibilities

• Engage with a cross-functional team to design and deliver a successful high-volume laser product
• Collaborate with product and architecture teams to drive new laser concepts
• Work closely with hardware and software teams to translate high level laser module product requirements and architecture specifications into a detailed engineering execution plan
• Engage in problem-solving to resolve design and manufacturing challenges for innovative high-performance laser solutions
• Actively collaborate across disciplines—with electronics, photonics, mechanical, thermal and package-design engineering teams—to build laser systems, control algorithms, PICs, and control ASICs that meet performance, power, and production requirements
• Collaborate with control-system and test engineers to define production test and validation protocols, as well as to characterize components and debug test results from prototype level to validation
• Work with external vendors to ensure timely development and delivery of key processes and components

Requirements:

• A Ph.D. in Photonics, Electrical Engineering, Applied Physics, or a related discipline, with at least 3 years of relevant post-degree experience (or equivalent).
• A minimum of 8 years of experience in photonic devices, photonic integrated circuits, and semiconductor physics.
• Strong understanding of silicon photonics
• Experience of closely collaborating with cross-functional engineering teams, like photonics design, packaging, thermal, system engineering and firmware to name a few.
• Ability to convey complex technical concepts to both technical and non-technical stakeholders with strong and clear communication
• Demonstrated strong problem solving skills specifically pertaining to problems that do not have obvious solutions

Preferred Qualifications:

• Strong understanding of laser physics
• Experience in lasers or silicon photonics for datacom applications
• Experience with control systems and system engineering
• Experience working in a high volume manufacturing environment
• Demonstrated technical leadership of a cross-functional team
• Willing and able to learn quickly, self-starter with a “no task is too big or small” attitude

We are hiring a Photonics Technical Lead to join our laser development team. In this role, you will develop integrated and highly scalable laser solutions for silicon photonics AI communications and computation. You will work closely with cross-disciplinary engineering teams both internally and across our ecosystem of manufacturing partners to assess the technical feasibility of product requirements, develop an engineering plan to meet architectural specifications, execute new product designs for laser solutions, and validate system performance on hardware.

This role requires a deep understanding of complex multi-domain platforms as well as integrated silicon photonics and the requirements of datacom systems. You will navigate the design space of performance, schedule, reliability, power consumption, and cost, working in tandem with stakeholders across the company to identify optimal and innovative engineering solutions. Creativity, analytical skills, and clear communication skills are a necessity. 

Join a tight-knit team where each individual’s contributions directly influence the success of the company and product. You'll have the opportunity to build innovative laser solutions from the ground up and tackle groundbreaking challenges. Work with people who love to build and who thrive in diverse technical environments where great ideas are prioritized.

Responsibilities

• Engage with a cross-functional team to design and deliver a successful high-volume laser product
• Collaborate with product and architecture teams to drive new laser concepts
• Work closely with hardware and software teams to translate high level laser module product requirements and architecture specifications into a detailed engineering execution plan
• Engage in problem-solving to resolve design and manufacturing challenges for innovative high-performance laser solutions
• Actively collaborate across disciplines—with electronics, photonics, mechanical, thermal and package-design engineering teams—to build laser systems, control algorithms, PICs, and control ASICs that meet performance, power, and production requirements
• Collaborate with control-system and test engineers to define production test and validation protocols, as well as to characterize components and debug test results from prototype level to validation
• Work with external vendors to ensure timely development and delivery of key processes and components

Requirements:

• A Ph.D. in Photonics, Electrical Engineering, Applied Physics, or a related discipline, with at least 3 years of relevant post-degree experience (or equivalent)
• A minimum of 8 years of experience in photonic devices, photonic integrated circuits, and semiconductor physics
• Strong understanding of silicon photonics
• Experience of closely collaborating with cross-functional engineering teams, like photonics design, packaging, thermal, system engineering and firmware to name a few
• Ability to convey complex technical concepts to both technical and non-technical stakeholders with strong and clear communication
• Demonstrated strong problem solving skills specifically pertaining to problems that do not have obvious solutions

Preferred Qualifications:

• Strong understanding of laser physics
• Experience in lasers or silicon photonics for datacom applications
• Experience with control systems and system engineering
• Experience working in a high volume manufacturing environment
• Demonstrated technical leadership of a cross-functional team
• Willing and able to learn quickly, self-starter with a “no task is too big or small” attitude

About this Role

You will be focused on architecting wafer, package and system level characterization and test strategies of Lightmatter’s novel Silicon Photonic product line. As part of this role you will have the ability to directly influence the design and development of Lightmatter silicon photonics technologies. You will be part of a growing interdisciplinary team with a lot of opportunities to learn and make a big impact.

Responsibilities

• Work directly with the architecture and design teams to understand the technology and conceptualize characterization and test techniques targeting feedback for design model validations.
• Architect test concepts, test platforms, design for test rules, and provide feedback early on during the technology concept phase.
• Create detailed test plan documentation and ensure timely execution.
• Define, develop, and setup of wafer, package and system level tests for Lightmatter silicon photonics products. 
• Develop test software to enable test execution, data analysis, and parameter extraction.
• Work with vendors to specify and procure test equipment.
• Setup and operate a range of optical equipment such as tunable lasers, power meters, polarization synthesizer, OBR/OVA, and high-speed test equipment.
• Engage with silicon and platform validation teams and bridge any gaps between test and validation teams.
• Work with OSAT teams to define, validate, and refine test techniques for high volume manufacturing.
• Work with the reliability team for pre and post-stress test needs.
• Keep up to date with the latest developments in Silicon Photonics technology and testability.

Requirements:

• Master’s in Photonics, Physics, Electrical Engineering or a related field
• A minimum of 8+ years of proven experience in silicon photonics test development 
• Proven industrial experience in supporting new product introduction and volume production  
• Deep understanding of Silicon Photonics components and circuits
• Experience working with design teams to define test cells for model feedback and validation 
• Hands on experience in characterization and test of photonics components and circuits 
• 3+ years of direct experience in high-speed photonic device test, system link bring-up, and familiar with test equipment such as AWG, DCA, DSO, PNA, LCA
• Experience in test system automation using Python
• Strong analytical and problem-solving skills to identify and solve issues during the testing process
• Ability to convey complex technical concepts to both technical and non-technical stakeholders 

Preferred Qualifications:

• PhD in Photonics, Physics, Electrical Engineering or a related field
• 2+ years of photonic component or circuit design experience is highly preferred

About this Role

We are hiring a talented software engineer to help us build the next generation of photonic AI processors and interconnects. In this role, you will be responsible for developing and extending the device software and firmware stack for Photonic Compute and Photonic interconnect products. You will collaborate with other software teams and hardware systems teams to develop security, telemetry, virtualization, and remote administration functionality.

Responsibilities 

• Collaborate across a multidisciplinary team including Photonic, Analog, Digital, Systems and Network experts to define control plane architecture for Lightmatter's photonic interconnect products.
• Define diagnostics and monitoring architecture for photonic transceivers.
• Integrate with DataCenter administration capabilities using environments such as CMIS, OpenBMC and DMTF.
• Debug and troubleshoot embedded systems using tools such as GDB, JTAG, and logic analyzers.
• Participate in customer engagements to gather requirements and usability criteria.

Qualifications

• BS and 8+ years of experience, or MS and 6+ years of experience.
• Degree in Computer Science, Electrical Engineering, Robotics, or a related technical field.
• Industry experience with device driver and kernel side development.
• Strong understanding of hardware-software integration.
• Practical knowledge of communication and control in embedded systems, peripherals, and buses.
• Experience with developing commercial/enterprise-level software and firmware on Linux.
• Experience with Git and CMake for building and managing software projects.
• Hands-on experience designing, simulating, or deploying control of autonomous systems.

Preferred Qualifications

• Proficiency with Python or C++.
• Familiarity with debugging tools such as GDB, JTAG, and logic analyzers.
• Experience developing firmware for photonic transceivers or similar systems.
• Experience with environments such as CMIS, OpenBMC and DMTF.
• Experience with optical communication systems and technologies.

About this Role

We're looking for a Senior Data Systems Engineer who bridges the gap between hardware domain expertise and modern data infrastructure. You won't just build pipelines — you'll work directly with foundries, OSATs, test engineers, and validation teams to understand what the data means, define how it should flow, and build the platform that makes AI-driven decisions possible across 13+ active hardware programs.

This is not a typical data engineering role. The right person has a background in semiconductor manufacturing, photonics, hardware test/validation, or a related hardware discipline — and a strong pull toward data systems, process optimization, and automation. You understand that the hardest part of a data platform isn't the code; it's knowing which data matters and why.

What You'll Do

Program Data Onboarding & Vendor Engagement

• Engage directly with foundries, OSATs, and internal engineering teams to align on data formats, delivery mechanisms, and quality standards for new programs
• Own the data onboarding lifecycle for programs ramping to High Volume Manufacturing (HVM)
• Identify gaps in data coverage across the pipeline: design, foundry, test/validation, photonics characterization, packaging/assembly, and system-level validation
• Influence external and internal teams to adopt scalable, platform-compatible data practices — this is hands-on stakeholder work, not email coordination

Data Platform Engineering

• Design, build, and maintain data pipelines that ingest, transform, and deliver hardware data from wafer-level test through system validation
• Build and maintain data models in dbt on Snowflake that serve downstream analytics, reporting, and AI/ML workflows
• Develop and operate orchestration workflows (Dagster) for reliable, observable data delivery
• Implement data quality checks, monitoring, and alerting to ensure platform reliability across production programs

Performance Metrics & Reporting

• Build performance metrics pipelines that translate raw hardware data into actionable insights for engineering and program teams
• Own stakeholder reporting and deliver training for teams onboarding to platform tools (Snowflake, Sigma, custom dashboards)
• Support AI/ML workflows by ensuring the data foundation is clean, structured, and reliable

Platform Improvement & Tooling

• Contribute to platform infrastructure: CI/CD, RBAC, cost optimization, self-service tooling
• Participate in sprint ceremonies, contribute to architectural decisions, and help shape the team's technical roadmap
• Mentor junior team members on both data engineering practices and hardware domain context

What You Bring

Required

• Bachelor’s Degree in Photonics, Data Engineering, Electrical Engineering or a related field
• 8+ years of professional experience in data engineering, process engineering, test engineering, or a related technical role in semiconductor, photonics, or hardware manufacturing
• Proficiency in Python and SQL
• Experience with Snowflake, dbt, Dagster/Airflow, or similar modern data stack components
• Experience working with data for hardware test, manufacturing, or characterization systems
• Demonstrated ability to work cross-functionally with technical teams and external partners (vendors, foundries, or OSATs) to define data requirements and influence practices
• Strong analytical thinking — you can look at a dataset and understand what it means in the physical world, not just how to transform it

Preferred

• Master’s or PhD in Physics, Electrical Engineering, Photonics, or a related field with 4+ years of experience
• Background in silicon photonics, photonic integrated circuits (PICs), or optical systems
• Experience with High Volume Manufacturing (HVM) ramps or new product introduction (NPI) data workflows
• Familiarity with semiconductor test data formats (STDF, WAT, parametric data)
• Experience building data quality frameworks or monitoring systems
• Experience with AI/ML tools applied to manufacturing or engineering data

About this Role

We're looking for a Senior Data Systems Engineer who bridges the gap between hardware domain expertise and modern data infrastructure. You won't just build pipelines — you'll work directly with foundries, OSATs, test engineers, and validation teams to understand what the data means, define how it should flow, and build the platform that makes AI-driven decisions possible across 13+ active hardware programs.

This is not a typical data engineering role. The right person has a background in semiconductor manufacturing, photonics, hardware test/validation, or a related hardware discipline — and a strong pull toward data systems, process optimization, and automation. You understand that the hardest part of a data platform isn't the code; it's knowing which data matters and why.

What You'll Do

Program Data Onboarding & Vendor Engagement

• Engage directly with foundries, OSATs, and internal engineering teams to align on data formats, delivery mechanisms, and quality standards for new programs
• Own the data onboarding lifecycle for programs ramping to High Volume Manufacturing (HVM)
• Identify gaps in data coverage across the pipeline: design, foundry, test/validation, photonics characterization, packaging/assembly, and system-level validation
• Influence external and internal teams to adopt scalable, platform-compatible data practices — this is hands-on stakeholder work, not email coordination

Data Platform Engineering

• Design, build, and maintain data pipelines that ingest, transform, and deliver hardware data from wafer-level test through system validation
• Build and maintain data models in dbt on Snowflake that serve downstream analytics, reporting, and AI/ML workflows
• Develop and operate orchestration workflows (Dagster) for reliable, observable data delivery
• Implement data quality checks, monitoring, and alerting to ensure platform reliability across production programs

Performance Metrics & Reporting

• Build performance metrics pipelines that translate raw hardware data into actionable insights for engineering and program teams
• Own stakeholder reporting and deliver training for teams onboarding to platform tools (Snowflake, Sigma, custom dashboards)
• Support AI/ML workflows by ensuring the data foundation is clean, structured, and reliable

Platform Improvement & Tooling

• Contribute to platform infrastructure: CI/CD, RBAC, cost optimization, self-service tooling
• Participate in sprint ceremonies, contribute to architectural decisions, and help shape the team's technical roadmap
• Mentor junior team members on both data engineering practices and hardware domain context

What You Bring

Required

• Bachelor’s Degree in Photonics, Data Engineering, Electrical Engineering or a related field
• 8+ years of professional experience in data engineering, process engineering, test engineering, or a related technical role in semiconductor, photonics, or hardware manufacturing
• Proficiency in Python and SQL
• Experience with Snowflake, dbt, Dagster/Airflow, or similar modern data stack components
• Experience working with data for hardware test, manufacturing, or characterization systems
• Demonstrated ability to work cross-functionally with technical teams and external partners (vendors, foundries, or OSATs) to define data requirements and influence practices
• Strong analytical thinking — you can look at a dataset and understand what it means in the physical world, not just how to transform it

Preferred

• Master’s or PhD in Physics, Electrical Engineering, Photonics, or a related field with 4+ years of experience
• Background in silicon photonics, photonic integrated circuits (PICs), or optical systems
• Experience with High Volume Manufacturing (HVM) ramps or new product introduction (NPI) data workflows
• Familiarity with semiconductor test data formats (STDF, WAT, parametric data)
• Experience building data quality frameworks or monitoring systems
• Experience with AI/ML tools applied to manufacturing or engineering data

We are looking for a strategic, experienced, business oriented, hands-on attorney to lead and run Lightmatter’s contracting function. In this role, you will architect the commercial frameworks that enable the deployment of next generation light-based server connectivity. You will move beyond standard contracts to negotiate complex, high-stakes technical and intellectual property transactions that are critical to our roadmap. If you are a collaborative, innovative professional passionate about tackling complex challenges and making an impact, join us!

How do you stand out? 

You are a "deal architect" with a deep understanding of the semiconductor lifecycle, from R&D to mass production. You don’t just redline contracts - you understand the underlying technology, business dynamics, risk profiles, negotiation timing and can fluidly navigate sophisticated technology transaction structures. You possess the expertise of a top-tier law firm, the practical business acumen of an in-house practitioner in the hardware space, and the situational judgment to understand what really matters in contract negotiations.

Responsibilities

• Contract Lifecycle Management: Drive the full lifecycle of commercial transactions, from initial structuring and term sheet negotiation to execution and post-closing management.
• Draft and Negotiate Commercial Transactions: Own the drafting, negotiation, and management of a wide variety of commercial contracts, including purchase, supply, services, quality and collaboration agreements for high-value hardware and software solutions.
• Lead IP & Technical Transactions: Structure and negotiate intellectual property agreements, including inbound/outbound licensing, joint development agreements, and technology partnerships.
• Strategic Advisory: Partner with engineering, supply chain, product, and sales leadership to address legal risks in commercial engagements and enable pragmatic, business-focused solutions.
• Scale Legal Operations: Create and maintain contract playbooks, templates, negotiation processes and systems to streamline the contracting cycle as the company scales.
• Manage Risk: Advise on license compliance, export control implications, and warranty/indemnity structures specific to the semiconductor and data center industries.

Qualifications

• Experience: A minimum of 10+ years of legal practice, with significant experience drafting and negotiating complex commercial agreements.
• Specialized Expertise: Demonstrated mastery of technology and intellectual property transactions, specifically regarding the development, licensing, manufacturing, supply and technical support for semiconductor and hardware designs, tools, technology and products. 
• Education: J.D. from an accredited law school and admission to a state bar in good standing.
• Soft Skills: Strong business acumen with the ability to translate complex legal concepts into clear guidance for non-legal stakeholders throughout Lightmatter.

Preferred Qualifications

• Industry Background: Prior in-house experience within the semiconductor, hardware, or deep-tech industries is highly preferred.
• Firm Experience: Training and experience at a top-tier law firm.
• Technical Fluency: An undergraduate degree in technical field, or a demonstrated ability to understand semiconductor hardware technologies.

We are hiring a Mixed-Signal Architecture Validation Engineer to partner with the internal engineering team at Lightmatter to deliver groundbreaking products to market. In this role, you will require a solid understanding of Lightmatter products, mixed-signal digital architecture, process technology, chip design, and clear communication skills.

In this role, you will be validating the architecture of the mixed-signal circuits that enable a groundbreaking photonic-based communication fabric. Your work will enable not only the low-level AMS/photonic devices but also the necessary interfaces with firmware and software. You will also influence product definition and technological roadmaps, as well as suitable design and verification methodologies.

You will report directly to the Head of Product Validation, but you will also work closely with our digital, analog, photonic, and software teams. We are particularly looking for someone with expertise in architecting mixed-signal circuits to enable high-speed AMS circuits, with a strong preference for someone with experience in photonic circuits.

Join a tight-knit team where each individual’s contributions directly influence the success of the company and product. You'll have the opportunity to build a new kind of data center from the ground up and to solve groundbreaking challenges along the way. Work with people who love to build and who thrive in technically diverse environments where great ideas are prioritized.

Responsibilities

• Own mixed-signal architecture validation for Lightmatter’s Passage product line. Work closely with the rest of the architecture team, chip design team, and the software team.
• Influence the mixed-signal architecture from initial concept through high-volume production.
• Validate and specify system-level mixed-signal designs, integrating complex AMS and photonic circuits. These circuits include high-speed drivers and receivers, SerDes, ADCs/DACs, digital controllers, and photonic modulators and detectors.
• Work closely with test and validation engineers to validate hardware against simulation predictions.
• Collaborate with DV team to translate pre-silicon verification into post-silicon validation
• Support architectural-level firmware validation
• Author, review, and validate architectural specifications and test methodologies.
• Identify improvements and potential pitfalls (including mitigation strategies) regarding the execution of the proposed architectures.

Qualifications

• MS in Electrical Engineering or a related field with 7+ years of relevant experience.
• In-depth knowledge of design flows for AMS electronics, preferably on photonic communication channels.
• Proven track record of delivering successful high-volume silicon to market, and a thorough understanding of the silicon product development flow.
• In-depth knowledge of mixed-signal circuit design in a high-speed analog/photonic link, including device bring-up, control, and digital signal processing.
• Hands-on experience with lab instruments and test setups.
• Demonstrated strong problem-solving skills, specifically for problems that do not have obvious solutions.
• Ability and desire to collaborate in a cross-disciplinary team.

Preferred Qualifications

• Understanding of SerDes PCS layer and equalization, along with forward error-correction schemes.
• Power user of development tools, including AI agents, CAD tools, SPICE simulators, IBIS-AMI simulators, and programming languages (e.g., MATLAB or Python).
• Experience in optical link bring-up and debug.

In this role, you will design, develop, and build photonic test systems that are critical to the characterization and validation of our products. You will collaborate closely with device, hardware, software, and digital and analog design teams to support the end-to-end development, validation, and qualification of photonic systems and their key components.

Join a tight-knit team where each individual’s contributions directly impact the success of the company and our innovative products. At Lightmatter, you’ll have the opportunity to work with people who love to build and thrive in technically diverse environments where great ideas are valued and prioritized.

We are hiring a Photonics Hardware Validation Engineer to join our Validation team to drive photonics testing, characterization and validation of our silicon photonics-based optical Interconnect Products.

Responsibilities

• You will need to understand our chip specifications well so that you can take responsibility for chip bring-up, testing, and validation of our next-generation Optical Interconnect products. This includes supporting the development of chip validation plans aligned to product specifications, xDVT, and interoperability testing.
• You will be required to contribute to test plan development, test bench configuration planning, setup of lab test equipment, and troubleshooting of validation setups to enable successful chip bring-up and testing.
• You will work within the product validation team on electro-optic, link-level testing in our lab using industry-standard practices and equipment.

Qualifications

• Bachelor’s degree in Electrical Engineering, Physics, or a related field with a minimum of 12 years of relevant experience, or a Master’s degree with a minimum of 8 years of relevant experience.
• Experience in the data communications field, specifically in electro-optic link-level testing and characterization in a lab environment.
• Familiarity with PCB design, including hardware testing and debugging of electro-optic circuits.
• Ability to work closely with Design Engineers, Software Engineers, and broader cross-functional teams to quickly gain knowledge of Lightmatter products and drive execution of chip bring-up and validation in our lab.
• Hands-on experience with standard bench test equipment for data communications, including electro-optic link testing and characterization.
• Basic scripting skills for automation of lab tests including analysis of results and report generation.
• Solid understanding of electrical and optical blocks in transmitters and receivers to enable efficient chip bring-up and link testing.
• Ability to troubleshoot and debug the electrical optical building blocks in a transceiver to triage bugs and root-cause performance gaps.

Preferred Qualifications:

• PhD is a plus
• Experience with high-speed data communication systems, including NRZ and PAM4 signaling.
• Familiarity with industry standards such as IEEE, OIF-CEI, or similar for data communication systems.
• Proficiency in Python, MATLAB, or similar tools for scripting and automation.
• Strong documentation skills to develop clear test plans, reports, and technical presentations.
• Prior experience in leading or mentoring junior engineers in lab validation and testing workflows.

About this Role

Join a cutting-edge team at the forefront of silicon photonics and high-speed transceiver design! As a member of the analog team, you’ll collaborate with our architects and engineers to develop innovative high speed analog transceiver solutions for next-generation optical and wireline communication systems.

* We are currently hiring for multiple levels for this role. Your level and compensation will be determined by your experience, education, and location.

Responsibilities

• Support micro-architecture development with chip architects by conducting feasibility studies
• Collaborate with members of our design engineering teams (system, digital, analog, photonics) to define electrical requirements
• Design analog/mixed-signal blocks with a focus on transceivers and broadband circuits interfacing with silicon photonics elements
• Document design simulations and verifications towards formal design reviews
• Drive block-level floorplan, mask design views, and their reviews
• Run post-layout and mixed-signal top-level simulations to validate integration
• Define production and bench-level test plans
• Validate the performance of the circuits in the lab

Qualifications

• MS with 6+ years of industry experience, OR Ph.D. with 3+ years of industry experience with a focus on optical or wireline transceiver design
• Experience designing in either GHz-speed RF or GHz-speed broadband analog design
• Experience with Tx/Rx equalization techniques and circuits
• Familiarity with SERDES architectures and implementations
• Solid understanding of CMOS device characteristics, noise, mismatch, linearity, and design trade-offs 
• Experience with Cadence Design Environment
• Ability to work collaboratively with people across multiple functional areas

Preferred Qualifications

• Experience designing Analog-Front-End blocks for transceiver circuits such as trans-impedance amplifiers (TIA) and Tx Driver
• Knowledge of 3D Electro-Magnetic (EM) simulation tools is a plus
• Experience with testing and validating high-speed analog/mixed-signal circuits
• Experience interfacing with silicon photonic modulators (MZM, Ring) is a plus
• Successful track record in delivering analog/mixed-signal IPs with 1st-time success while meeting tight schedules

#LIF-FM1

Lightmatter is looking to hire a Reliability Test Intern for the summer of 2026. In this role you can expect to work with the reliability and test team on various projects related to testing reliability and characterization. 

Responsibilities:

• Performing reliability/characterization tests
• Setting up the tests and writing the test automation script
• Perform test data analysis and presenting it to key stakeholders

Requirements: 

• Currently pursuing a Bachelor’s in Electrical Engineering, Mechanical Engineering, Computer Science, or a related field
• Basic knowledge of test automation tools, python is preferred
• Familiarity with hardware testing equipment such as oscilloscopes, multimeters, and thermal sensors
• Understanding of basic electronics, circuits, and embedded systems
• Strong problem-solving and analytical skills
• Ability to work in a hands-on lab environment
• Willingness and curiosity to learn from an exciting team!

Lightmatter builds chips that enable extreme-scale artificial intelligence computing clusters. If you're a collaborative engineer or scientist who has a passion for innovation, solving challenging technical problems, and doing impactful work like building the world's first optical computers, consider joining the team at Lightmatter!

We are hiring a Sr. Mixed-Signal Digital Architect. The selected candidate will partner with external facing teams at Lightmatter and the internal engineering team to deliver groundbreaking products to the market. As an architect, you will provide detailed technical documents that describe what needs to be built to the engineering team. This will require a solid understanding of process technology, state of the art in chip design, and clear communication skills. In this role, you will be defining the architecture of the digital circuits that enable a ground-breaking photonic-based communication fabric. Your work will not only enable the AMS/photonic devices at low-level but also enable the necessary interfaces with the firmware/software. You will interact directly with our vendors and our customers. You will also define the product and technological roadmaps along with suitable design and verification methodologies.

You will report directly to the Chief Scientist, but you will also work closely with our digital, analog, photonic, and software teams. We are particularly looking for someone with expertise in architecting digital circuits to enable high-speed AMS circuits, with a strong preference for someone with experience in photonic circuits.

Join a tight-knit team where each individual’s contributions directly influence the success of the company and product. You'll have the opportunity to build a new kind of computer from the ground up and to solve groundbreaking challenges along the way. Work with people who love to build and who thrive in technically diverse environments where great ideas are prioritized.

Responsibilities

• Be the digital architecture owner of Lightmatter’s Passage product. Work closely with the rest of the architecture team, chip-design team, and the software team.
• Responsible for the digital architecture from initial concept through high-volume production. Work closely with the technical program manager(s) to plan, organize, and execute.
• Architect and specify system level digital designs integrating complex AMS and photonic circuits. These circuits include stabilization circuits of AMS & photonic devices; line-rate DSP, FEC, CRC; and tuning & adaptation of analog front-end components.   
• Work closely with test and validation engineers to validate hardware against simulation prediction.
• Actively collaborate with the RTL and DV teams to enable block-level implementation and verification, respectively.
• Actively enable the firmware team to develop the recipe for hardware bringup and validation.
• Author, review, and validate architectural specifications. With the product and applications engineering teams, they also produce customer-facing product datasheets and reference designs.
• Identify possible improvements as well as possible pitfalls (including mitigation strategies) around executing the proposed architectures. 

Qualifications 

• 12+ years and a Masters’ degree in Electrical or Computer Engineering
• In-depth knowledge of power-efficient digital design flow for high-speed AMS electronics, preferably on photonic communication channels.
• In-depth knowledge of digital circuit design in a high-speed analog/photonic link, including device bring-up, control, and digital signal processing.
• Demonstrated strong problem solving skills specifically pertaining to problems that do not have obvious solutions.
• Demonstrated strong customer communication, with timely responses and consistently positive feedback

Preferred Qualifications

• Understanding of SerDes PCS layer and equalization along with forward error-correction schemes.
• Ability and desire to collaborate in a cross-disciplinary team: from hardware to software.

Lightmatter builds chips that enable extreme-scale artificial intelligence computing clusters. If you're a collaborative engineer or scientist who has a passion for innovation, solving challenging technical problems, and doing impactful work like building the world's first optical computers, consider joining the team at Lightmatter!

We are hiring a Sr. Mixed-Signal Digital Architect. The selected candidate will partner with external facing teams at Lightmatter and the internal engineering team to deliver groundbreaking products to the market. As an architect, you will provide detailed technical documents that describe what needs to be built to the engineering team. This will require a solid understanding of process technology, state of the art in chip design, and clear communication skills. In this role, you will be defining the architecture of the digital circuits that enable a ground-breaking photonic-based communication fabric. Your work will not only enable the AMS/photonic devices at low-level but also enable the necessary interfaces with the firmware/software. You will interact directly with our vendors and our customers. You will also define the product and technological roadmaps along with suitable design and verification methodologies.

You will report directly to the Chief Scientist, but you will also work closely with our digital, analog, photonic, and software teams. We are particularly looking for someone with expertise in architecting digital circuits to enable high-speed AMS circuits, with a strong preference for someone with experience in photonic circuits.

Join a tight-knit team where each individual’s contributions directly influence the success of the company and product. You'll have the opportunity to build a new kind of computer from the ground up and to solve groundbreaking challenges along the way. Work with people who love to build and who thrive in technically diverse environments where great ideas are prioritized.

Responsibilities

• Be the digital architecture owner of Lightmatter’s Passage product. Work closely with the rest of the architecture team, chip-design team, and the software team.
• Responsible for the digital architecture from initial concept through high-volume production. Work closely with the technical program manager(s) to plan, organize, and execute.
• Architect and specify system level digital designs integrating complex AMS and photonic circuits. These circuits include stabilization circuits of AMS & photonic devices; line-rate DSP, FEC, CRC; and tuning & adaptation of analog front-end components.   
• Work closely with test and validation engineers to validate hardware against simulation prediction.
• Author, review, and validate architectural specifications. With the product and applications engineering teams, they also produce customer-facing product datasheets and reference designs.
• Identify possible improvements as well as possible pitfalls (including mitigation strategies) around executing the proposed architectures. 

Qualifications 

• 12+ years and a Masters’ degree in Electrical or Computer Engineering
• In-depth knowledge of power-efficient digital design flow for high-speed AMS electronics, preferably on photonic communication channels.
• In-depth knowledge of digital circuit design in a high-speed analog/photonic link, including device bring-up, control, and digital signal processing.
• Demonstrated strong problem solving skills specifically pertaining to problems that do not have obvious solutions.
• Demonstrated strong communication and collaboration internally and externally, with timely responses and consistently positive feedback.

Preferred Qualifications

• Understanding of SerDes PCS layer and equalization along with forward error-correction schemes.
• Ability and desire to collaborate in a cross-disciplinary team: from hardware to software.

The Sr. IT Systems Administrator must have a strong background in networking, Linux systems, and experience with Windows, focused on supporting and evolving IT environments with our engineering team. You'll be the first line of support for highly technical issues, own the buildout of more robust and secure network and server infrastructure, and collaborate closely with our Engineering teams in a hands-on, fast-moving environment. This role also touches broader IT responsibilities as needed.

You'll operate with a high degree of autonomy and be trusted to make good decisions — experienced enough to own problems independently and leave things meaningfully better than you found them.

Responsibilities 

• Serve as first-line support for technical issues in our engineering environments, triaging and resolving networking, server, and connectivity problems
• Design, deploy, and harden network infrastructure in lab environments — switching, routing, VLANs, firewalls, and wireless
• Administer and maintain Linux servers across our mix of distributions (primarily RHEL/CentOS/Fedora and Ubuntu/Debian)
• Administer and maintain Windows-driven lab equipment and computers
• Help build lab network and systems toward greater robustness, security, and maintainability — this is a build role, not just a keep-the-lights-on role
• Manage identity, access, and authentication systems including RADIUS/802.1X and integration with cloud identity providers
• Automate routine administrative tasks through scripting (Bash, Python, or similar)
• Maintain clear, accurate documentation of infrastructure topology, configurations, and runbooks
• Collaborate with Engineering and IT peers on cross-functional infrastructure projects
• Evaluate and recommend tooling and process improvements that raise the bar on reliability and security

Qualifications

• 6–8 years of hands-on experience in IT systems administration, network engineering, or a closely related role
• Strong Linux administration skills across RHEL/CentOS/Fedora and/or Ubuntu/Debian
• Experience administering Windows workstations
• Solid networking fundamentals: TCP/IP, DNS, DHCP, VLANs, routing protocols, network design, and firewall policy management
• Experience configuring and troubleshooting enterprise wireless, including RADIUS-based authentication (802.1X/EAP-TLS)
• Comfortable working in a lab or R&D environment alongside engineers and technical stakeholders
• Scripting proficiency for automation — Bash and/or Python and no/low-code tooling
• Strong communication skills; able to document clearly and work effectively with a highly technical audiences
• Willingness to learn new technologies and grow

Preferred Qualifications

• Experience with Juniper networking equipment (our primary vendor)
• Familiarity with configuration management tooling (Ansible, Puppet, or similar)
• Exposure to cloud identity platforms and SSO (Entra ID/Azure AD, Okta, or equivalent)
• Exposure to public cloud platforms (AWS, Azure, GCP)
• Experience with endpoint management platforms (Jamf, Intune, or similar)
• Familiarity with specialized Linux distributions such as PetaLinux or OpenBMC

We are seeking a strategic and hands-on Director of NPI (New Product Introduction) Operations, who will lead the transition of our next-generation hardware products from design completion through mass production. You will serve as the strategic bridge between Engineering, Product, and the Global Supply Chain, ensuring that revolutionary technology is manufacturable, scalable, and delivered with uncompromising quality to our data center partners.

Responsibilities:

Product Lifecycle Leadership

• Lead the cross-functional NPI Core Team to ensure Design for Manufacturing (DFM) and Design for Test (DFT) requirements, specifically related to optical assembly and hybrid integration, are integrated early in the product design phase.
• Drive the Stage-Gate process from Proto to EVT (Engineering Validation), DVT (Design Validation), and PVT (Production Validation), with a focus on critical 3D CPO and laser manufacturing steps.

Supplier & Partner Readiness

• Partner with Strategic Sourcing to identify and qualify specialized OSAT partners with expertise in Silicon Photonics packaging (e.g., fiber attach, lidding), wafer-level processing, and active/passive optical alignment.
• Manage high-tech component vendors (e.g., DFB lasers, specialized optical substrates) and high-level relationships with Tier 1 manufacturers to ensure capacity and capability align with the product roadmap.

Yield & Ramp Management

• Own the "Ramp to Volume" strategy, identifying manufacturing bottlenecks in the pilot line, specifically related to laser burn-in and optical coupling, and implementing solutions to ensure a smooth transition to High-Volume Manufacturing (HVM).
• Monitor and report on First Pass Yield (FPY) focusing on end-of-line electro-optical performance metrics, and drive continuous improvement initiatives for wafer-level yield and module assembly yield.

Schedule & Risk Mitigation

• Develop and own the Master NPI Schedule, factoring in long-lead times for specialized foundry runs (e.g., Silicon Photonics wafers) and custom laser components.
• Proactively identify supply chain risks (e.g., single-source long-lead materials for CPO substrates or specialized laser drivers) and develop robust contingency plans, including alternate sourcing strategies for key optical components.

Financial Oversight

• Manage the Bill of Materials (BOM) cost targets through the development lifecycle, focusing on cost reduction.
• Ensure products meet aggressive margin targets required for global deployment at the point of launch.

Qualifications:

• BS in Mechanical, Electrical, or Systems Engineering, or a relevant field.
• 10+ years of experience in Hardware Operations or NPI, specifically within the semiconductor, networking, or High-Performance Computing (HPC) industries.
• Deep understanding of semiconductor fabrication, advanced packaging (2.5D/3D), or optical assembly.
• Proven track record of managing cross-functional teams and external manufacturing partners in a high-growth, fast-paced environment.

Preferred Qualifications:

• An MBA or MS in Supply Chain/Operations is a significant plus.
• Direct experience managing supply chains for silicon photonics, co-packaged optics (CPO), or highly complex advanced packaging (e.g., TSVs, interposers, wafer-on-wafer).
• Experience building supply chains for AI hardware accelerators, HPC clusters, or enterprise datacenter servers.
• Proven ability to thrive in a high-growth, ambiguous environment, toggling seamlessly between tactical execution and high-level executive strategy.
• Familiarity with the III-V materials ecosystem and external laser source procurement.

Lightmatter is seeking a Principal of Machine Learning Infrastructure Researcher to join our Machine Learning team. This team is focused on inventing novel hardware systems using Lightmatter technology and modeling the performance of Lightmatter-enabled systems on both training and inference workloads.

This is primarily a creative role where you need to think outside the box to push the boundaries of systems research with the power of silicon photonics at your fingertips. This role will work closely with our product, solutions architecture, and engineering teams to generate impactful performance analysis, create high-performance rack-scale designs, and publish cutting-edge ML systems research.

Responsibilities: 

• Stay up to date on the latest advancements in Machine Learning research.
• Build tools to model the performance of Passage-enabled systems when running both training and inference workloads for the latest AI models.
• Collaborate with our product and solutions architecture teams to design compelling reference platforms for our customers, powered by Lightmatter technology. 
• Function as the Machine Learning expert in the room.
• Publish academic papers at top industry conferences and journals. Help support the publication of whitepapers, blog posts, and other marketing collateral.
• Lead a small team of Machine Learning engineers

Qualifications:

• PhD in Computer Science, Electrical Engineering, or a related field and at least 10 years of industry or research experience in the field.
• Solid background in Machine Learning  systems research and experience with performance evaluation and performance modeling.
• Hands-on experience with machine learning / deep learning methods and extensive knowledge of Large Language Model training and inference frameworks.
• Academic publications in relevant journals and industry conferences.
• Strong knowledge of AI systems, including compute (GPUs, TPUs, etc.) and networking (Ethernet, Infiniband, NVLink, etc.) technologies, and their various topologies, paradigms, and trade-offs.
• Proven track record leading a team to deliver published results.

Preferred Qualifications:

• Demonstrated ability to creatively problem-solve and apply first-principles thinking to generate novel ideas, particularly in ambiguous, evolving environments.
• Exceptional skills in communicating complex research outcomes and technical concepts to partners and internal stakeholders, while embodying our value of speaking truth.
• Ability to work across research, product, and business functions, rolling up your sleeves to bridge gaps and accelerate outcomes, while demonstrating the core value of "We are one Lightmatter."
• Adaptable and versatile, thriving in a high-speed, high-precision environment.
• Experience in managing engineers and leading projects, with the ability to lift up the team, and work with high standards and high collaboration.

Lead Package Assembly Integrator

In this role, you will work on leading-edge packaging technologies to enable AI architectures that set new industry standards for compute power, performance, and efficiency. As part of the Packaging Technology team, you will serve as the lead assembly process integrator. Your responsibilities will include developing assembly process technologies and generating assembly/test design rules for Heterogeneous Integrated co-packaged optics technologies by collaborating with design teams, silicon and photonics foundries, and OSAT partners. You will be responsible for developing test chip strategies, managing test chip design, and appropriately planning and managing design of experiments with partners. Additionally, you will work closely with package and system architects to incorporate manufacturability considerations into product definitions. The results of your work will lead to advanced package designs that meet assembly and reliability requirements, while delivering leading-edge products for data centers and the high-end compute segment.

Responsibilities: 

• Develop end-to-end 3D package assembly, test, and fiber-attach processes for Lightmatter products, ensuring robust high yields while meeting performance and reliability goals by working closely with foundry and OSAT partners.
• Develop and execute package architectures and designs, ensuring they meet rigorous product performance standards while optimizing for manufacturability and long-term reliability.
• Define test chip requirements and manage test chip design required for 3D package process development.
• Develop and validate design rules for a high-yielding assembly process. The scope includes assembly/test, backend/RDL, silicon/package interaction, substrate, thermal/mechanical solutions, fiber attach, system integration, and other related areas.
• Plan and execute design of experiments, manage data, and perform appropriate analysis to gain insights into assembly process and design interactions.
• Perform analysis to identify key reliability risks under product use conditions and drive appropriate design and materials solutions to improve product mechanical integrity.
• Summarize and communicate to key stakeholders across Lightmatter, suppliers and customers as required.
• Write reports and document methodologies.

Required Qualifications:

• MS or PhD in Mechanical Engineering, Material Science, or related engineering field.
• 10-12 years of experience in wafer scale packaging assembly process development.
• Knowledge of 2D/3D packaging technologies, materials, and equipment requirements.
• Proven ability to define requirements for test chip and assembly test vehicles.
• Understanding of photonics packaging requirements including various fiber attach methods.
• Experience with advanced packaging technologies, including thermal, mechanical, and reliability factors.

Preferred Qualifications:

• Excellent communication skills, with the ability to convey complex technical concepts to both technical and non-technical stakeholders.
• Strong project ownership, with a history of driving results independently and with minimal supervision.
• Proven track record of developing creative solutions for complex technical challenges.
• Experience in thermal and mechanical modeling and coding for data analysis.

We are hiring a Chip Firmware Validation Engineer to help us build the next generation of photonic AI processors and interconnects.

In this role, you will be responsible for developing and validating the device software and firmware stack for Photonic Compute and Photonic Interconnect products. You will collaborate with other software and hardware systems teams to develop firmware, conduct validation and reliability testing, perform data analysis, and execute further software stack optimization.

Join a tight-knit team where each individual’s contributions directly impact the success of the company and our innovative products. At Lightmatter, you’ll have the opportunity to work with people who love to build and who thrive in technically diverse environments where great ideas are valued and prioritized.

Responsibilities

• Collaborate across a multidisciplinary team including photonics, analog, digital, systems, and network experts to define the control architecture for Lightmatter's photonic interconnect products.
• Drive the software and firmware validation testing for our photonic products.
• Debug and troubleshoot embedded systems using tools such as GDB, JTAG, and logic analyzers.
• Participate in defining product architecture and validation test plans definition to gather requirements and usability criteria.

Qualifications

• BS in Electrical Engineering, Computer Science, or a related field with 5+ years of experience in ASIC firmware validation.
• Strong understanding of hardware-software integration.
• Practical knowledge of communication and control in embedded systems, peripherals, and buses.
• Experience in embedded software development.
• Experience developing commercial or enterprise-level software and firmware on Linux.
• Experience with Git and CMake for building and managing software projects.
• Hands-on experience with data gathering, analysis, and reporting.
• Proficiency with Python, C, C++ and MongoDB.

Preferred Qualifications:

• Experience with Snowflake reporting software
• Experience with environments such as CMIS and OpenBMC, and familiarity with validation and reliability/FIT(Failure in Time) testing.
• Familiarity with optical test, measurement and methodologies for characterizing optical components and systems.
• Experience developing firmware for photonic transceivers or similar systems.

Join a tight-knit team where each individual’s contributions directly influence the company's and product's success. You'll have the opportunity to build a new kind of computer, including the development of Silicon Photonics-based high-performance optical interconnect solutions for the next generation of AI-ML products from the ground up. Work with people who love to build and who thrive in technically diverse environments where great ideas are prioritized.

Responsibilities:

• Design, layout, and test innovative photonic devices
• Contribute and own large-scale photonic layouts for high-volume products
• Actively collaborate across disciplines, with analog, digital, and physical design teams to tapeout products and characterization devices.
• Actively collaborate with the product, sales, and architectural teams to define requirements for device characterization, debugging, and validation.
• Provide thought leadership in the area of expertise and be perceived as a subject matter expert
• Works on broader organizational projects that require a thorough understanding of photonics
• Accountable for results, which may impact the entire function
• Contribute to Process Design Kits (PDK) development

Qualifications:

• M.S. in Electrical Engineering, Computer Science, Applied Physics or similar disciplines
• 8 years and a Master’s degree; PhD with 5 years experience; or equivalent experience.
• In-depth knowledge of semiconductor device physics
• In-depth knowledge of photonic devices and their modeling algorithms
• Experience with large-scale photonic layouts using industry standard and/or custom tools
• Demonstrated track record of ownership of integrated silicon photonics components
• Proficiency with photonic simulation tools such Ansys FDTD, Tidy3D, Photon Design or similar
• Proficiency with scripting languages such as Python
• Demonstrated strong problem solving skills, specifically pertaining to problems that do not have obvious solutions

Preferred Qualifications:

• Strong project execution skills, with the ability to handle multiple priorities and meet project milestones.
• Excellent communication skills, with a demonstrated ability to collaborate effectively with multidisciplinary teams
• Demonstrate strong problem-solving skills in problems that do not have obvious solutions

Job Summary

We are seeking an Optical Packaging Engineer to lead the development of next-generation connectivity solutions. In this role, you will be the bridge between chip design and high-volume manufacturing, driving the optical architecture for Photonic Integrated Circuit (PIC) coupling. You will take ownership of the entire lifecycle from designing custom lenses and detachable Fiber Array Unit (FAU) connectors to managing global OSAT partners for mass production.

If you thrive at the intersection of precision simulation and real-world scalability, this is the role for you.

Responsibilities

• Lead the optical design for PIC-to-PIC and PIC-to-FAU coupling. Design and optimize critical components including Micro-Lens Arrays (MLAs), FAU arrays, and detachable connectors.
• Collaborate on PIC layouts to ensure the chip architecture is optimized for high-efficiency coupling and alignment tolerances.
• Drive the strategy for sub-micron precision alignment both in internal R&D lab and at scale with OSAT partners.
• Establish workflow for Structural, Thermal, and Optical (STOP) analysis. Use these multi-physics insights to predict performance shifts across operating temperatures and mechanical stresses.
• Develop and validate novel optical isolator integration approaches to protect laser sources from back-reflection in high-density PIC environments.
• Lead technical collaboration with OSATs from initial prototyping through validation and into high-volume production (HVM).
• Provide expert guidance on assembly processes to improve throughput, reduce coupling loss, and minimize per-unit costs.
• Partner with electrical, mechanical, and systems teams to ensure seamless product integration and timely delivery of complex modules.
• Distill complex technical findings into clear design concepts and status updates for executive stakeholders and partners.

Required Qualifications

• BS or MS in Optical Engineering, Physics, Mechanical Engineering, or a related field.
• 8-10+ years of hands-on experience in optical or opto-mechanical design, specifically within the photonics or semiconductor industries.
• Proven track record in the design of micro-lenses and FAU arrays in Zemax for PIC-to-PIC and PIC-to-FAU coupling. 
• Hands-on experience with optical alignment and hardware validation.
• Demonstrated experience managing OSATs and suppliers through the full product lifecycle (NPI to high-volume).

Preferred Qualifications

• PhD in Optical Engineering, Physics, Mechanical Engineering, or a related field.
• Familiarity in Lumerical (FDTD/MODE) or similar tools for wave-guide level simulation.
• Hands-on experience with SolidWorks for mechanical integration and connector design.
• Experience with using FEA tools for STOP analysis.
• Expertise in Datacom optical modules and emerging silicon photonics standards.

As an Analog Architect, you will spearhead pathfinding efforts and work on early prototypes of innovative analog and mixed-signal solutions for Lighmatter’s next-generation optical-engine products. You will then work closely with the engineering team to take your ideas to high-volume production. This role requires a deep understanding of high-frequency systems-on-chip (SoCs), high-speed (100+ Gbaud) serial and electro-optic interfaces. The role also requires creativity, analytical skills, and clear communication skills. You may represent the company at technical conferences as an example of our technical leadership. 

Join a tight-knit team where each individual’s contributions directly influence the success of the company and product. You'll have the opportunity to build a new kind of computer from the ground up and to solve groundbreaking challenges along the way. Work with people who love to build and who thrive in technically diverse environments where great ideas are prioritized.

Responsibilities

• Architect high-speed (200Gbaud and beyond) electro-optical interfaces for Lightmatter’s next-generation co-packaged optics (CPO) solutions.
• Design next-generation high-speed DACs, linear drivers and TIAs in the latest FinFET process nodes.
• Actively collaborate across disciplines—with electronics, photonics, and mechanical engineering teams—to specify the requirements and solutions for circuit blocks, SoCs, debug, and validation.
• Collaborate with the product team to develop our future technological and product roadmap in the context of industry trends.
• Work closely with test and validation engineers to validate hardware against simulation prediction to ensure high performance and high yield.
• Publish and present novel ideas and participate in premier technical conferences.
  
  

Qualifications

• A Ph.D. degree in Electrical Engineering or similar discipline with at least 5+ years of experience of designing high-speed analog circuits in TSMC N3/N5/N7.
• Hands-on experience in high-speed SERDES design in advanced process nodes (7nm and below).
• Deep technical background and a proven track record of innovation in their area of expertise.
• Strong understanding of how the layout impacts the SERDES performance.
• Familiarity with analyzing the impact of package and PCB on SERDES performance.
• Familiarity with UCIe, PAM4, and other high-speed SerDes.
• Strong background with using circuit and electromagnetic simulation tools needed for high-speed mixed-signal circuit design: Cadence virtuoso, Verilog-A, EMX or equivalent tools.

#LI-FM1

About this Role

As an Analog Architect, you will spearhead pathfinding efforts and work on early prototypes of innovative analog and mixed-signal solutions for Lighmatter’s next-generation optical-engine products. You will then work closely with the engineering team to take your ideas to high-volume production. This role requires a deep understanding of high-frequency systems-on-chip (SoCs), high-speed (100+ Gbaud) serial and electro-optic interfaces. The role also requires creativity, analytical skills, and clear communication skills. You may represent the company at technical conferences as an example of our technical leadership. 

Join a tight-knit team where each individual’s contributions directly influence the success of the company and product. You'll have the opportunity to build a new kind of computer from the ground up and to solve groundbreaking challenges along the way. Work with people who love to build and who thrive in technically diverse environments where great ideas are prioritized.

Responsibilities

• Architect high-speed (200Gbaud and beyond) electro-optical interfaces for Lightmatter’s next-generation co-packaged optics (CPO) solutions.
• Design next-generation high-speed DACs, linear drivers and TIAs in the latest FinFET process nodes.
• Actively collaborate across disciplines—with electronics, photonics, and mechanical engineering teams—to specify the requirements and solutions for circuit blocks, SoCs, debug, and validation.
• Collaborate with the product team to develop our future technological and product roadmap in the context of industry trends.
• Work closely with test and validation engineers to validate hardware against simulation prediction to ensure high performance and high yield.
• Publish and present novel ideas and participate in premier technical conferences.
  
  

Qualifications

• A Ph.D. degree in Electrical Engineering or similar discipline with at least 5+ years of experience of designing high-speed analog circuits in TSMC N3/N5/N7.
• Hands-on experience in high-speed SERDES design in advanced process nodes (7nm and below).
• Deep technical background and a proven track record of innovation in their area of expertise.
• Strong understanding of how the layout impacts the SERDES performance.
• Familiarity with analyzing the impact of package and PCB on SERDES performance.
• Familiarity with UCIe, PAM4, and other high-speed SerDes.
• Strong background with using circuit and electromagnetic simulation tools needed for high-speed mixed-signal circuit design: Cadence virtuoso, Verilog-A, EMX or equivalent tools.

#LI-FM1

We are hiring a Digital Design Engineer to help develop an ASIC for the next-generation artificial intelligence computing architecture alongside a team of world-class scientists and engineers. If your passion is innovation, solving challenging technical problems, and doing impactful work, you should join our team and help build the world's first optical computers!

In this job, you will work in close collaboration with computer architects, software engineers, verification engineers, and physical design engineers to design innovative compute accelerators that work with photonic technology to power the growing AI/ML workloads that customers want while keeping power low. This will be a great opportunity to define the next advance in computer architecture!

Responsibilities

• Develop microarchitecture design and RTL for advanced ML/AI accelerator ASICs/SoCs including advanced memory system and high-performance NoC.
• Understand and integrate silicon photonic communication and compute technology into digital accelerator design.
• Actively work with Architecture, Design Verification, Implementation, Photonic, Analog and Software teams to realize high performance, low power designs in advanced technology nodes.
• Create design specifications and documentation to facilitate collaboration with partner teams.
• Manage RTL implementation to achieve functionally correct, performant designs within project schedules by identifying, communicating and mitigating risks.

Qualifications

• 8 years of related experience with a Bachelor’s degree; or 6 years and a Master’s degree in Electrical or Computer Engineering (or related fields)
• Expertise with high-speed digital design techniques
• Expertise with power-efficient digital design techniques
• Experience in ASIC design with multiple successful tape outs

Preferred Qualifications

• Experience in communication protocols (e.g. PCIe)
• Experience interfacing with memory systems (e.g. HBM/DDR5)
• Knowledge of processor design, accelerators, and/or memory hierarchies
• Knowledge of machine learning algorithms

We are hiring a Digital Design Engineer to help develop an ASIC for the next-generation artificial intelligence computing architecture alongside a team of world-class scientists and engineers. If your passion is innovation, solving challenging technical problems, and doing impactful work, you should join our team and help build the world's first optical computers!

In this job, you will work in close collaboration with computer architects, software engineers, verification engineers, and physical design engineers to design innovative compute accelerators that work with photonic technology to power the growing AI/ML workloads that customers want while keeping power low. This will be a great opportunity to define the next advance in computer architecture!

Responsibilities

• Develop microarchitecture design and RTL for advanced ML/AI accelerator ASICs/SoCs including advanced memory system and high-performance NoC.
• Understand and integrate silicon photonic communication and compute technology into digital accelerator design.
• Actively work with Architecture, Design Verification, Implementation, Photonic, Analog and Software teams to realize high performance, low power designs in advanced technology nodes.
• Create design specifications and documentation to facilitate collaboration with partner teams.
• Manage RTL implementation to achieve functionally correct, performant designs within project schedules by identifying, communicating and mitigating risks.

Qualifications

• 8 years of related experience with a Bachelor’s degree; or 6 years and a Master’s degree in Electrical or Computer Engineering (or related fields)
• Expertise with high-speed digital design techniques
• Expertise with power-efficient digital design techniques
• Experience in ASIC design with multiple successful tape outs

Preferred Qualifications

• Experience in communication protocols (e.g. PCIe)
• Experience interfacing with memory systems (e.g. HBM/DDR5)
• Knowledge of processor design, accelerators, and/or memory hierarchies
• Knowledge of machine learning algorithms

We are hiring a Digital Design Engineer to help develop an ASIC for the next-generation artificial intelligence computing architecture alongside a team of world-class scientists and engineers. If your passion is innovation, solving challenging technical problems, and doing impactful work, you should join our team and help build the world's first optical computers!

In this job, you will work in close collaboration with computer architects, software engineers, verification engineers, and physical design engineers to design innovative compute accelerators that work with photonic technology to power the growing AI/ML workloads that customers want while keeping power low. This will be a great opportunity to define the next advance in computer architecture!

Responsibilities

• Develop microarchitecture design and RTL for advanced ML/AI accelerator ASICs/SoCs including advanced memory system and high-performance NoC.
• Understand and integrate silicon photonic communication and compute technology into digital accelerator design.
• Actively work with Architecture, Design Verification, Implementation, Photonic, Analog and Software teams to realize high performance, low power designs in advanced technology nodes.
• Create design specifications and documentation to facilitate collaboration with partner teams.
• Manage RTL implementation to achieve functionally correct, performant designs within project schedules by identifying, communicating and mitigating risks.

Qualifications

• 8 years of related experience with a Bachelor’s degree; or 6 years and a Master’s degree in Electrical or Computer Engineering (or related fields)
• Experience in ASIC design with multiple successful tape outs
• Expertise with high-speed digital design techniques
• Expertise with power-efficient digital design techniques

Preferred Qualifications

• Experience in communication protocols (e.g. PCIe)
• Experience interfacing with memory systems (e.g. HBM/DDR5)
• Knowledge of processor design, accelerators, and/or memory hierarchies
• Knowledge of machine learning algorithms

Lightmatter is seeking a Principal of Machine Learning Infrastructure Researcher to join our Machine Learning team. This team is focused on inventing novel hardware systems using Lightmatter technology and modeling the performance of Lightmatter-enabled systems on both training and inference workloads.

This is primarily a creative role where you need to think outside the box to push the boundaries of systems research with the power of silicon photonics at your fingertips. This role will work closely with our product, solutions architecture, and engineering teams to generate impactful performance analysis, create high-performance rack-scale designs, and publish cutting-edge ML systems research.

Responsibilities: 

• Stay up to date on the latest advancements in Machine Learning research.
• Build tools to model the performance of Passage-enabled systems when running both training and inference workloads for the latest AI models.
• Collaborate with our product and solutions architecture teams to design compelling reference platforms for our customers, powered by Lightmatter technology. 
• Function as the Machine Learning expert in the room.
• Publish academic papers at top industry conferences and journals. Help support the publication of whitepapers, blog posts, and other marketing collateral.
• Lead a small team of Machine Learning engineers

Qualifications:

• PhD in Computer Science, Electrical Engineering, or a related field and at least 10 years of industry or research experience in the field.
• Solid background in Machine Learning  systems research and experience with performance evaluation and performance modeling.
• Hands-on experience with machine learning / deep learning methods and extensive knowledge of Large Language Model training and inference frameworks.
• Academic publications in relevant journals and industry conferences.
• Strong knowledge of AI systems, including compute (GPUs, TPUs, etc.) and networking (Ethernet, Infiniband, NVLink, etc.) technologies, and their various topologies, paradigms, and trade-offs.
• Proven track record leading a team to deliver published results.

Preferred Qualifications:

• Demonstrated ability to creatively problem-solve and apply first-principles thinking to generate novel ideas, particularly in ambiguous, evolving environments.
• Exceptional skills in communicating complex research outcomes and technical concepts to partners and internal stakeholders, while embodying our value of speaking truth.
• Ability to work across research, product, and business functions, rolling up your sleeves to bridge gaps and accelerate outcomes, while demonstrating the core value of "We are one Lightmatter."
• Adaptable and versatile, thriving in a high-speed, high-precision environment.
• Experience in managing engineers and leading projects, with the ability to lift up the team, and work with high standards and high collaboration.

About this Role

Join a cutting-edge team at the forefront of silicon photonics and analog circuit design! As a member of the analog team, you’ll collaborate with our architects and engineers to develop innovative analog and mixed-signal (AMS) solutions for next-generation optical and wireline communication systems.

* We are currently hiring for multiple levels for this role. Your level and compensation will be determined by your experience, education, and location.

Responsibilities

• Design analog/mixed-signal (AMS) circuits used in control loops, such as data converters, amplifiers, drivers, comparators, bandgap, and more
• Support micro-architecture development with chip architects by conducting feasibility studies
• Collaborate with members of our design engineering teams (system, digital, analog, photonics/laser) to define electrical requirements
• Document design simulations and verifications towards formal design reviews
• Drive block-level floorplan, mask design views, and their reviews
• Run post-layout and mixed-signal top-level simulations to validate integration
• Define production and bench-level test plans
• Validate the performance of the circuits in the lab

Qualifications

• MS with 8+ years of relevant experience, OR Ph.D. with 5+ years of industry experience designing analog and mixed-signal circuits
• Solid understanding of CMOS device characteristics, noise, mismatch, linearity, and design trade-offs
• Experience with Cadence Design Environment
• Experience in testing analog circuits in a lab environment
• Ability to work collaboratively with people across multiple functional areas

Preferred Qualifications

• Experience interfacing with Silicon photonics (MZM, Ring) or laser IC is a plus
• Experience in chip top-level design is a plus

#LI-FM1

If you're a collaborative Product Management Leader who has a passion for innovation, solving challenging technical problems, and doing impactful work, consider joining the team at Lightmatter!

As a Principal Product Line Manager,  Optics/Photonics, you will be responsible for leading our product definition, rollout, and product introduction to drive design wins with the industry's top semiconductor and cloud vendors for our photonics-enabled solutions. Reporting directly to the Director, Product Line Management, you will work with engineering, sales, operations, finance, and the executive team to accelerate the adoption of Lightmatter products in segment-defining categories.

Responsibilities

• Complete the detailed requirements definition (MRD/PRD), product line family/SKU strategy, and commercial market positioning for the company’s silicon photonics-based hardware offerings with a focus on Passage, Lightmatter’s programmable photonic chiplet interconnect.  This also includes evaluation/development systems and other demonstration vehicles. 
• Drive industry partner relationships and the availability of partner hardware solution offerings including lasers, fibers, connectors, and other related optical components.
• Manage the roll-out of the products to lead customers and product lifecycle management through the development process all the way to and through the production phases.
• Along with sales, pursue and win key customers by producing collaterals and articulating key advantages and value propositions of Lightmatter products through detailed customer proposals.
• Develop pricing guidelines, margin analysis, and forecasts establishing competitiveness and profitability of Lightmatter products in support of corporate financial goals and revenue planning.
• Represent Lightmatter at key industry forums and speaking events as a corporate leader and subject matter expert.
• Develop high-quality, high-value outbound marketing and product technical collaterals in conjunction with product marketing and technical documentation teams.
• Brief top industry press, analysts, and investors relative to Lightmatter product strategies, competitive advantages, and other industry trends.

Qualifications 

• 12+years of related experience with 8+ years in product management, marketing, applications engineering, and business development roles driving high-complexity semiconductor products to volume production.
• Bachelor’s degree in Electrical Engineering or related engineering field.
• Previous experience driving products through the full development cycle from business case/definition through development, design-in, production, and EOL cycles.
• Experience with a wide range of products and technologies, deployed in datacenters. This includes management, provisioning  operations and maintenance of optical elements.
• Strong end-to-end understanding of all key aspects of semiconductor chip development.
• Demonstrates strong data-driven decision-making skills by effectively collecting, analyzing, and interpreting large datasets.
• Must be a collaborative leader providing the understanding of key financial indicators for smarter business decisions.
• Must have detailed market and technical knowledge of silicon photonics and/or related optical technologies. 
• Must have experience facilitating effective communication across functional teams, resulting in a reduction in project misalignments and accelerating delivery timeline. 

Preferred Qualifications 

• Advanced technical degrees related to optics/photonics technology are preferred given the high complexity of the technology. 
• Self-starter who thrives in a fast-paced, dynamic environment with multiple competing priorities and who finds satisfaction in being accountable to accomplishing results quickly and accurately
• Willing and able to learn quickly. Self-starter with a “no task is too big or small” attitude
• Broad professional network across relevant industry segments.