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Lead/Principal DFT Engineer

icon building Company : Fractile
icon briefcase Job Type : Full Time

Number of Applicants

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Job Description - Lead/Principal DFT Engineer






















Fractile is building silicon, systems and software which will redefine the frontier of AI: running the world’s most advanced models at radically higher speed and lower cost. We have an exceptional team across hardware and software capable of bringing about this change, and we are growing fast to meet demand and deliver our product at scale.





Define and lead the end-to-end DFT architecture for a large, multi-core AI accelerator SoC, taking ownership from early strategy through silicon bring-up and production. This role combines architectural leadership with hands-on execution, ensuring scalable, power-aware, and high-coverage test solutions while driving alignment across design, physical implementation, and test engineering teams.


Key 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


Required Experience



  • Strong experience in DFT for complex ASIC/SoC designs (typically 10+ 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


Profile



  • Comfortable owning ambiguous, high-impact problems

  • Balances architectural thinking with hands-on execution

  • Sets direction while staying close to implementation details





About us



  • Founded in 2022, team of 80+ which is expanding rapidly

  • Modern, open offices in London and Bristol

  • Collaborative, problem-solving culture built on deep curiosity, entrepreneurial initiative and technical fluency


Export control and security clearance


Certain roles may involve working on technologies subject to export restrictions. Applicants may be required to undergo additional eligibility checks to ensure compliance with applicable law.


 






















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