Senior/Principal Physical Design Engineer
Fractile · London, UK · Bristol, UK
Infrastructureonsitesenior
At a glance
Highlights
- Build next-gen chips delivering frontier AI inference at thousands of tokens/second.
- Drive full-chip physical implementation from synthesis through to sign-off.
- Tackle capacity challenges of large models running at very long contexts.
What they offer
- Meaningful equity ownership
- Private medical, dental and vision coverage
- Contributory pension
- 25 days holiday plus bank holidays
- Life and critical illness insurance
Ideal candidate
Experienced chip builder who loves owning complex physical design end-to-end and sweating PPA tradeoffs. Collaborative problem-solver excited by reinventing AI hardware and using AI tools to work faster.
Requirements
- 8+ years of experience in physical design for advanced nodes (7nm, 5nm or below)
- Degree in Electrical Engineering, Computer Engineering or related field
- Strong proficiency in place-and-route, STA and sign-off EDA tools
- Solid understanding of CMOS technology, semiconductor physics and process limitations
- Experience with low-power design, power optimisation and multi-power domains
- Expertise in timing closure, signal integrity, IR drop and formal verification
- Proficiency in TCL, Perl or Python for automation
- Experience with HPC, AI accelerator or networking chips
Lab profile
About Fractile
Reinventing AI hardware to make frontier model inference faster at scale.
What they build
- AI inference chips
- AI compute systems
Known for
- High-speed AI inference
- Custom silicon design
- Full-stack hardware systems
Key facts
- Founded in 2022
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