Senior/Principal DFT Engineer
Fractile · London, UK · Bristol, UK
Infrastructureonsitesenior
At a glance
Highlights
- Own DFT architecture for a large AI accelerator SoC built for frontier models.
- Build chips generating thousands of tokens per second at long contexts.
- Drive test strategy from architecture through silicon bring-up and yield ramp.
What they offer
- Meaningful equity so everyone shares in value creation
- Private Medical, Dental and Vision
- Contributory Pension
- 25 days holiday plus bank holidays
- Life/Critical Illness Insurance
Ideal candidate
You are a hands-on owner who thrives in ambiguity and loves high-impact hardware challenges. You balance big-picture architecture with close attention to implementation and enjoy mentoring engineers while driving complex designs to silicon.
Requirements
- Strong experience in DFT for complex ASIC/SoC designs (typically 8+ years)
- Proven ownership of DFT architecture on at least one large tapeout
- Deep expertise in scan, compression, ATPG, and MBIST
- Experience with industry tools (Synopsys or Tessent)
- Strong understanding of clocking, resets, power domains, and physical constraints
- Experience with silicon bring-up, debug, and yield ramp
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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