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Fractile, founded in 2022, is building specialized hardware to accelerate AI inference at scale. The company has raised $220M from top-tier investors including Founders Fund and Accel and is focused on solving the latent bottleneck in frontier AI: inference speed and efficiency at long contexts.
This role is a Semiconductor Test and Product Engineer responsible for the full lifecycle of manufacturing test solutions for next-generation AI accelerator devices. You will span pre-silicon planning through first silicon bring-up, NPI, and high-volume production ramp.
Key responsibilities include:
- Develop, deploy, and maintain ATE test programs for high-volume manufacturing of AI accelerator chips and pre-silicon test vehicles
- 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, characterization, and corner analysis
- Optimize test coverage, test time, and cost while maintaining manufacturing robustness
- Collaborate with subcontracted test program development partners and OSATs on test program execution and debug
- Support qualification, reliability testing, and high-volume manufacturing ramp
You will work closely with UK-based test development and DFT teams to ensure robust, scalable production of high-performance compute silicon. The role emphasizes ownership, rapid iteration, and direct engagement with leadership on ambitious timelines.
REQUIREMENTS:
- BS or MS in Electronics and Electrical Engineering or related field
- 5+ years of hands-on semiconductor test engineering experience
- Strong experience developing ATE test programs (Advantest 93K or similar)
- Solid understanding of DFT methodologies (scan, ATPG, MBIST) 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
PREFERRED QUALIFICATIONS:
- Experience testing AI accelerators, GPUs, networking ASICs, or other high-performance compute ICs
- Experience with PCIe Gen5/Gen6 or other high-speed interfaces
- Exposure to advanced packaging, chiplets, or multi-die test flows
- Experience improving yield, reducing test time, or optimizing cost in high-volume manufacturing
- Experience in test hardware procurement (probe cards, load boards, sockets)
