About Graphcore 

At Graphcore, we’re building the future of AI compute.We’re a team of semiconductor, software and AI experts, with deep experience in creating the complete AI compute stack - from silicon and software to infrastructure at datacenter scale.As part of the SoftBank Group, backed by significant long-term investment, we are delivering key technology into the fast-growing SoftBank AI ecosystem.To meet the vast and exciting AI opportunity, Graphcore is expanding its teams around the world.We are bringing together the brightest minds to solve the toughest problems, in a place where everyone has the opportunity to make an impact on the company, our products and the future of artificial intelligence.

Job Summary

We are seeking a Product Safety Engineer to support safety design, validation, and certification of high-performance server platforms, including systems operating with high-voltage DC power and advanced liquid-cooling architectures.

This role involves close collaboration with electrical, mechanical, thermal, and manufacturing teams to ensure products meet applicable safety standards and are prepared for global certification.

Required skills: 

• Contribute to safety architecture and compliance for server systems, including HVDC power shelves, PDUs, and liquid-cooling subsystems
• Apply IEC 62368-1 requirements in design reviews, including creepage and clearance, insulation coordination, grounding, and protective measures
• Review schematics, PCB layouts, and mechanical designs to identify potential electrical, thermal, and fire hazards
• Support hazard-based safety engineering (HBSE) assessments, including evaluation of single-fault conditions and abnormal operation scenarios
• Plan and execute safety validation testing, such as dielectric strength (HiPot), insulation resistance, fault condition testing, thermal evaluation, and fire enclosure assessment
• Work with EMC teams to ensure appropriate grounding, shielding, and filtering strategies are considered in safety design
• Support certification activities with external agencies (e.g. CB Scheme, NRTL bodies), including preparation of technical documentation and test reports
• Contribute to safety strategies for HVDC systems (typically 400–1000V DC), including insulation systems, interlocks, and service safety considerations
• Evaluate safety aspects of liquid-cooling systems, including leakage risk, dielectric properties of fluids, condensation, and system monitoring
• Maintain structured, audit-ready documentation to support compliance and manufacturing readiness

Desired:

• Degree in Electrical, Electronic, Mechanical Engineering, or a related discipline
• Experience in product safety, compliance, or a related engineering function
• Working knowledge of IEC 62368-1 or comparable product safety standards
• Understanding of electrical safety principles, including insulation, grounding, creepage/clearance, and fault protection
• Ability to review and interpret engineering designs (schematics, layouts, mechanical drawings) in the context of safety
• Experience supporting product certification or working with external test laboratories
• Familiarity with safety considerations in liquid-cooled or thermally intensive systems
• Awareness of EMC considerations in high-power designs

Benefits

In addition to a competitive salary, Graphcore offers flexible working, a generous annual leave policy, private medical insurance and health cash plan, a dental plan, pension (matched up to 5%), life assurance and income protection. We have a generous parental leave policy and an employee assistance programme (which includes health, mental wellbeing, and bereavement support). We offer a range of healthy food and snacks at our central Bristol office and have our own barista bar! We welcome people of different backgrounds and experiences; we’re committed to building an inclusive work environment that makes Graphcore a great home for everyone. We offer an equal opportunity process and understand that there are visible and invisible differences in all of us. We can provide a flexible approach to interview and encourage you to chat to us if you require any reasonable adjustments.

Sponsorship

Applicants for this position must hold the right to work in the UK. Unfortunately at this time, we are unable to provide visa sponsorship or support for visa applications.

About us

Graphcore is one of the world’s leading innovators in Artificial Intelligence compute.

It is developing hardware, software and systems infrastructure that will unlock the next generation of AI breakthroughs and power the widespread adoption of AI solutions across every industry.

As part of the SoftBank Group, Graphcore is a member of an elite family of companies responsible for some of the world’s most transformative technologies. Together, they share a bold vision: to enable Artificial Super Intelligence and ensure its benefits are accessible to everyone.

Graphcore’s teams are drawn from diverse backgrounds and bring a broad range of skills and perspectives. A melting pot of AI research specialists, silicon designers, software engineers and systems architects, Graphcore enjoys a culture of continuous learning and constant innovation!

Job Summary

We are seeking a Compliance Manager to define, implement, and scale security and compliance frameworks spanning our global lab environments. This role will focus on securing sensitive hardware, enforcing access controls, and ensuring engineering data and infrastructure meet required compliance standards.

You will play a meaningful role in enabling secure AI hardware development by establishing robust processes around lab zoning, asset tracking, and network segmentation while partnering with engineering teams across multiple locations.

The Team

You will be part of a cross-functional security and infrastructure team supporting Graphcore’s international engineering centers, including the new AI Engineering Campus in Austin.

The team works closely with hardware engineers, IT, and security stakeholders to ensure compliance controls are embedded into lab environments and operational workflows.

Responsibilities and Duties

• Define and implement physical access controls, including lab zoning and restricted areas
• Ensure sensitive hardware is secured and not exposed within lab environments
• Enforce network division and permission management across mixed infrastructure environments
• Coordinate hardware asset monitoring, inventory oversight, and chain-of-custody activities
• Support secure lab bring-up and infrastructure deployment activities
• Implement and scale compliance controls across global engineering labs
• Partner with engineering departments to ensure secure handling of engineering data through approved systems
• Supervise and improve compliance with internal security policies and external standards
• Contribute to the development of secure infrastructure practices within AI and hardware environments

Candidate Profile

Essential:

• Hands-on experience implementing physical access control and lab zoning
• Having worked in labs, data centers, or hardware engineering environments
• Practical experience with network segmentation and access control
• Experience running hardware asset tracking, inventory, and custody
• Experience working in secure infrastructure or lab bring-up environments
• Strong understanding of operational security controls in technical environments

Desirable:

• Exposure to export-controlled environments
• Experience in AI, HPC, semiconductor, or hardware validation labs
• Familiarity with BMC / out-of-band (OOB) networks and rack-level infrastructure
• Solid understanding of ISO 27001, SOC 2, or NIST frameworks (practical application preferred)

About Graphcore

At Graphcore, we’re building the future of AI compute. We’re a team of semiconductor, software and AI experts, with deep experience in creating the complete AI compute stack - from silicon and software to infrastructure at datacenter scale. As part of the SoftBank Group, backed by significant long-term investment, we are delivering key technology into the fast-growing SoftBank AI ecosystem.To meet the vast and exciting AI opportunity, Graphcore is expanding its teams around the world. We are bringing together the brightest minds to solve the toughest problems, in a place where everyone has the opportunity to make an impact on the company, our products and the future of artificial intelligence.

Job Summary

We are seeking a Senior Semiconductor Reliability Engineer to lead reliability strategy and execution across advanced silicon nodes and advanced packaging technologies, spanning both pre-silicon and post-silicon phases. This role is responsible for ensuring robust product reliability from technology selection and design enablement through silicon bring-up, qualification, and high-volume manufacturing.

The successful candidate will work at the intersection of device physics, circuit design, packaging, and manufacturing, providing technical leadership on reliability risk assessment, modeling, qualification, and failure analysis for complex, high-performance devices.

The Role

As a Senior Reliability Engineer, you will lead reliability strategy and qualification activities for advanced AI silicon and package technologies. You’ll work across pre-silicon analysis, post-silicon qualification, and failure analysis, partnering closely with silicon, packaging, manufacturing, and quality teams.

This role combines deep technical expertise with cross-functional leadership and offers the opportunity to influence reliability methodology for cutting-edge AI hardware platforms.

Responsibilities and Duties

• Define reliability requirements for advanced silicon nodes and package platforms
• Perform pre-silicon reliability risk assessments across silicon, interconnect, and package technologies
• Evaluate reliability mechanisms including EM, TDDB, BTI, HCI, BEOL, and silicon-package interaction
• Support design reviews, guard-banding, and reliability sign-off activities
• Develop and execute qualification plans aligned with JEDEC and customer requirements
• Lead HTOL, thermal cycling, thermal shock, and reflow qualification testing
• Drive correlation between pre-silicon modelling and post-silicon qualification results
• Lead root-cause analysis of silicon and package-related failures
• Utilize X-ray and CSAM analysis to diagnose package defects including delamination, voiding, and cracking
• Work with foundries, OSATs, and reliability labs to resolve reliability and manufacturing issues
• Author qualification reports, risk assessments, and reliability documentation
• Mentor engineers and contribute to reliability best practices and methodologies

Candidate Profile

Essential

• Bachelor’s or Master’s degree in Electrical Engineering, Materials Science, Physics, Mechanical Engineering, or related field
• 8+ years of semiconductor reliability engineering experience
• Strong understanding of silicon reliability mechanisms including EM, TDDB, BTI, and HCI
• Experience with BEOL, interconnect, and advanced package reliability
• Hands-on experience with HTOL, thermal cycling, thermal shock, and reflow testing
• Experience using X-ray and CSAM for package failure analysis
• Familiarity with JEDEC reliability standards
• Strong analytical, communication, and cross-functional collaboration skills

Desirable

• Experience with leading-edge nodes, AI accelerators, or high-performance SoCs
• Knowledge of HBM, chiplets, TSVs, micro-bumps, and 2.5D/3D integration
• Experience with wafer-level reliability or system-level stress testing
• Experience working with foundries and OSAT partners
• Technical leadership or mentoring experience

Benefits

In addition to a competitive salary, Graphcore offers flexible working, a generous annual leave policy, private medical insurance and health cash plan, a dental plan, pension (matched up to 5%), life assurance and income protection. We have a generous parental leave policy and an employee assistance programme (which includes health, mental wellbeing, and bereavement support). We offer a range of healthy food and snacks at our central Bristol office and have our own barista bar! We welcome people of different backgrounds and experiences; we’re committed to building an inclusive work environment that makes Graphcore a great home for everyone. We offer an equal opportunity process and understand that there are visible and invisible differences in all of us. We can provide a flexible approach to interview and encourage you to chat to us if you require any reasonable adjustments.

Applicants for this position must hold the right to work in the UK. Unfortunately at this time, we are unable to provide visa sponsorship or support for visa applications