Staff SLT Test Engineer
Graphcore is a Bristol-based AI chipmaker (IPU accelerators), a SoftBank subsidiary and a Molten Ventures portfolio company.
Maintainer signals as of 8/20/2026
About Graphcore
Graphcore (graphcore.ai) is a British semiconductor company building Intelligence Processing Units (IPUs) for AI workloads. Founded in Bristol in 2016, it was acquired by SoftBank in 2024. It is a portfolio company of Molten Ventures.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will lead the development and deployment of System Level Test solutions for next-generation AI processors. You will develop test hardware, software, automation, diagnostics and characterization tools; drive silicon bring-up, yield learning and manufacturing readiness; investigate failures; optimize test strategies; support production ramps; collaborate with engineering and manufacturing teams; and mentor junior engineers.
Requirements
- Experience in System-Level Test, production test, characterization, or post-silicon validation of complex semiconductor products
- Understanding of semiconductor fundamentals, power delivery, signal integrity, board design practices, and advanced packaging technologies
- Knowledge of DFT methodologies including scan, JTAG, BIST, MBIST, boundary scan, and manufacturing test architectures
- Experience working with OSATs, contract manufacturers, and high-volume manufacturing environments
- Scripting, automation, and debugging skills using Python, Tcl, Shell, Perl, or similar languages
- Ability to lead technical projects and coordinate cross-functional activities
- Communication, collaboration, and problem-solving skills
- Bachelor's degree in electrical engineering, Computer Engineering, or a related field
- Experience with 2.5D/3D stacked semiconductor products is desirable
- Familiarity with chiplets, CoWoS, SoIC, HCB, or other advanced packaging technologies is desirable
Responsibilities
- Lead development and deployment of SLT hardware and software solutions
- Own SLT workstreams from requirements definition through production readiness
- Develop and integrate SLT test content with validation, bring-up, product engineering, and manufacturing teams
- Lead development of test boards, sockets, thermal solutions, and instrumentation
- Develop and maintain SLT software frameworks, automation infrastructure, diagnostics, telemetry collection, and data analysis tools
- Drive voltage, frequency, thermal, and reliability characterization
- Lead debugging, failure analysis, root-cause investigations, and correlation activities
- Define and optimize test coverage, test time, screening effectiveness, DPPM, and manufacturing test strategies
- Transfer SLT solutions into OSAT and contract manufacturing environments
- Work with DFT teams on testability, observability, scan architectures, and manufacturing test requirements
- Define future SLT architectures, methodologies, and infrastructure requirements
- Mentor junior engineers and provide technical leadership
- Drive technical reviews, project planning, risk management, and execution tracking
- Collaborate with external vendors and industry partners
Benefits
- Flexible working
- Medical coverage
- Dental coverage
- Vision coverage
- Flexible Spending Accounts
- Health Savings Accounts
- Disability insurance
- Life insurance
- 401(k) retirement plan
- Commuter benefits
- Wellness services
- Employee Assistance Programme