AI Accelerator Semiconductor Test Engineer

Fractile; Tottenham; On-site; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Equity ownership

Private medical

Pension

25 days holiday

Inclusive environment

Job summary

Fractile in Tottenham seeks an experienced Semiconductor Product Engineer to lead development and deployment of manufacturing test solutions for AI accelerator devices. You will drive test strategy across first silicon bring-up to high-volume production, collaborating with design, DFT, packaging, and manufacturing teams to ensure robust, cost-effective test content.

The role demands deep expertise in DFT, high-speed interfaces, and CMOS manufacturing, with global partners to optimize yield and

Qualifications

• 5+ years of hands-on semiconductor test engineering experience.
• Experience developing ATE test programs (Advantest 93K, Teradyne, or similar).
• Solid understanding of DFT methodologies (scan, ATPG, MBIST, LBIST) and memory test techniques.
• Experience debugging silicon issues 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.

Responsibilities

• Define and develop test methods and strategies for an AI accelerator chip targeting high-volume manufacturing.
• Plan and manage 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 deployment.
• 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.

Skills

Test engineering

ATE programs

DFT methodologies

Silicon debugging

CMOS test

Tools

Advantest 93K

Teradyne

Job description

Fractile in Tottenham seeks an experienced Semiconductor Product Engineer to lead development and deployment of manufacturing test solutions for AI accelerator devices. You will drive test strategy across first silicon bring-up to high-volume production, collaborating with design, DFT, packaging, and manufacturing teams to ensure robust, cost-effective test content.

The role demands deep expertise in DFT, high-speed interfaces, and CMOS manufacturing, with global partners to optimize yield and