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Semiconductor Test Engineer

Fractile· Hardware Test
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Hybrid (Bristol)Posted 3mo ago

About the role

Experienced Semiconductor Test Engineer to lead development and deployment of manufacturing test solutions for next-generation AI accelerator devices, spanning from first silicon bring-up to high-volume production with focus on test strategy, ATE content, debugging, yield optimization, and robust production.

Responsibilities

  • Develop and maintain ATE test programs for an AI accelerator chip targeting high-volume manufacturing.
  • Implement manufacturing test content for advanced CMOS designs including high-speed logic, SRAM, DRAM, and high speed IO blocks.
  • Develop and debug structural and functional test content such as scan/ATPG, LBIST, MBIST, JTAG, and HSIO tests.
  • Bring up first silicon on ATE, including pattern debug, tester correlation, shmooing, and corner analysis.
  • Support testing of high-speed interfaces such as PCIe Gen6 and multi-GHz LPDDR, including at-speed tests and margining features.
  • Execute silicon characterization and failure analysis to identify yield limiters and defect mechanisms.
  • Optimize test coverage, test time, and cost while maintaining manufacturing robustness.
  • Work with DFT and design teams to improve testability and close coverage gaps.
  • Collaborate with OSATs and external partners on test program execution and debug.
  • Support advanced packaging test flows, including die-to-die interconnect testing and package-level thermal considerations.
  • Contribute to documentation of test programs, debug procedures, and manufacturing release materials.
  • Support qualification, reliability testing, and high-volume manufacturing ramp.

Qualifications

  • 5+ years of hands-on semiconductor test engineering experience.
  • Strong experience developing ATE test programs (Advantest 93K, Teradyne, or equivalent).
  • Solid understanding of DFT methodologies (scan, ATPG, MBIST, LBIST) and memory test techniques.
  • Experience debugging silicon issues at the tester and correlating failures to design or process causes.
  • Familiarity with advanced CMOS nodes and production test challenges.
  • Ability to work effectively in a cross-functional engineering environment.

Skills

Required:ATE test program developmentDFT methodologiessilicon debugging

Benefits

  • Private Medical, Dental and Vision, Contributory Pension, 25 Days holiday plus bank holidays and Life/Critical Illness Insurance.
  • Equity & Ownership: meaningful equity so everyone shares in the value creation
Last updated Aug 20, 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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