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.

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

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

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 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.

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 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.

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.

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

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

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

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.