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Senior/Principal DFT Engineer

Fractile· Silicon
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Hybrid (Bristol)Full-timePosted 3mo ago

About the role

Senior/Principal DFT Engineer responsible for defining and owning the DFT architecture for a large AI accelerator SoC, integrating DFT flows into the EDA environment, and guiding a team of DFT engineers across hierarchical designs, memory systems, and production test.

Responsibilities

  • Own and define the DFT architecture for a large AI accelerator SoC (scan, compression, MBIST, LBIST, boundary scan)
  • Set DFT strategy, methodology, flow and signoff criteria
  • Drive integration of DFT tools and flows into the overall EDA environment
  • Define hierarchical DFT approach for multi-core designs and large memory systems
  • Define scan architecture, compression strategy, and ATPG approach
  • Define memory test and repair strategy for large embedded RAM
  • Establish power-aware and at-speed test strategies
  • Work closely with RTL and physical design to ensure clean DFT integration and timing closure
  • Work with test and product engineering teams to bring up and debug ATPG patterns on ATE, supporting production test and yield ramp
  • Mentor and guide DFT engineers

Qualifications

  • 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

Skills

Required:DFT architectureScan, compression, ATPG, MBISTIndustry tools (Synopsys or Tessent)Clocking, resets, power domains, physical constraintsSilicon bring-up, debug, yield ramp

Benefits

  • Competitive salary: A competitive salary reflective of your experience and the specialist nature of the role.
  • Equity & Ownership: meaningful equity so everyone shares in the value creation.
  • Benefits: Private Medical, Dental and Vision, Contributory Pension, 25 Days holiday plus bank holidays and Life/Critical Illness Insurance.
  • Diverse & fun office: we believe the hardest problems get solved by the broadest range of minds. We are committed to Equal Employment Opportunity through attracting and retaining a diverse team and building an inclusive environment.
Last updated Oct 15, 2026. Interested? Apply on the company site.
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About Fractile

Radically Accelerate Frontier Model Inference

Fractile is designing AI compute systems that will enable the next generation of AI scaling: frontier model inference, 25x faster, at 1/10th the cost.

frontier model inferenceAI computecompute systemsAI scalinginference hardwareprocessor innovation
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