{"id":210257,"url":"https://alion.io/job/fractile-semiconductor-test-engineering-team-leader","title":"Semiconductor Test Engineering Team Leader","company":{"id":51523,"name":"Fractile","domain":"fractile.ai","url":"https://alion.io/company/fractile","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"A","score":93,"open_postings":35,"ghost_share":0.029,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":195,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Hardware","role_family":"Hardware","seniority":"lead","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Bristol, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":77000,"max_usd":137000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":22},"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2025-12-18T14:36:40Z","employer_posted_date":"2026-09-09","last_verified_at":"2026-10-17T13:29:52Z","board_verified":true,"closed_at":null,"days_open":302,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":302},"description":"About Fractile\nFractile was founded in 2022 on the bet that, eventually, the world’s most capable AI systems would be limited in their impact by the time taken to produce useful outputs. We bet everything on the logical conclusion: that the only way to truly unlock this latent value, to make speed viable at scale, was to radically re-invent the hardware that we run our frontier AI models on. Ever since, we have been building chips and systems that tackle this problem: how to efficiently generate output at thousands of tokens per second, while handling the complexity and capacity challenges of operating large models at very long contexts.\nThe workloads that push to the limits of the current frontier are already transformational; it is the technical and economic limits on inference speed that are constraining progress. The defining work of the 21st century will be marked by the engine of inference delivering immense and diffuse chains of intellectual inquiry, in drug discovery, in software engineering, in materials discovery, in any field where progress is driven by deep reasoning and intelligence to resolve complex problems.\nThe Role\nWe are seeking a senior Semiconductor Test Engineering leader to drive manufacturing test strategy and silicon production readiness for next-generation AI accelerator devices. This role combines deep technical expertise in high-performance compute silicon with leadership responsibility for internal product engineering teams and external development partners. The successful candidate will oversee all aspects of production test development - from DFT strategy and ATE bring-up through silicon characterisation, yield optimisation, advanced packaging test, and high-volume manufacturing ramp - ensuring robust, scalable, and cost-effective test solutions for advanced AI accelerator platforms.\nKey Responsibilities \nDrive the manufacturing test strategy for an AI accelerator chip featuring PCIe Gen6, LPDDR, advanced CMOS nodes, and advanced packaging (e.g., 2.5D/3D, chiplet).\nLead and manage a team of chip test engineers responsible for test planning, test program development, pattern bring-up, silicon characterization, debug, and optimization.\nManage subcontracted test development partners (OSATs, ATE vendors, external engineering services). Includes scoping, technical oversight, schedule tracking, and quality control of deliverables.\nDefine and drive test software architecture, DFT usage, and test pattern development strategies for high-speed logic, SRAM, DRAM, and High Speed IO blocks.\nWork closely with design, DFT, product engineering, packaging, and validation teams to ensure robust test coverage, manufacturability, and yield ramp success.\nOversee test development for high speed interfaces such as PCIe Gen6 and multi-GHz LPDDR.\nGuide development of structural and functional test content (scan, MBIST, JTAG, HSIO tests, system-level tests).\nLead silicon bring-up and development on ATE: correlation, failure analysis, shmooing, corner testing, stress testing, and yield improvement activities.\nDefine KPIs and metrics for subcontractor performance, test coverage, yield, time-to-test, and cost optimization.\nDrive continuous improvement in test methodologies, automation, data analytics, and debug infrastructure.\nEnsure robust test flows for advanced packaging (thermals, interposer/bridge connections, TSV integrity, die-to-die IO testing).\nSupport qualification, reliability testing, and high-volume manufacturing transfer.\nRequired Qualifications\n8+ years in semiconductor test engineering, including leadership or technical lead roles.\nDeep experience with ATE test development (e.g., Advantest 93K, Teradyne).\nStrong understanding of DFT (scan, ATPG, LBIST, MBIST), memory testing, and high-speed interface testing.\nExperience managing external test development partners or OSATs.\nProven ability to lead and mentor test engineering teams.\nSolid background in advanced CMOS nodes and familiarity with advanced packaging test challenges.\nExpertise in silicon debug, characterization, and correlation across ATE and system-level environments.\nAbility to collaborate across design, architecture, product engineering, packaging, and operations..\nPreferred Qualifications\nExperience with AI/ML accelerator chips or other high-performance compute ICs.\nPrior involvement with PCIe Gen5/Gen6 or LPDDR4/5/6 test methodologies.\nFamiliarity with signal-integrity-aware test development and high-speed IO margining.\nExperience with chiplets, 2.5D/3D IC test flows, or heterogeneous integration.\n How we work\nOwnership and execution: you will have full agency to drive your work forward\nRapid iteration: we all work directly with top leadership to move from idea to hardware on ambitious timelines\nFull-stack engagement: hardware, software, silicon, and modelling teams all work closely together to create a product with generational impact\nOptimistic and pragmatic: we possess the will to win, and to do the hard work to get us there\nTeam player mentality: the mission is bigger than any of us, and we have the curiosity and technical focus to see the best idea shipped, no matter who’s it is\nWhat We Offer\nCompetitive salary: A competitive salary reflective of your experience and the specialist nature of the role.\nEquity & Ownership: meaningful equity so everyone shares in the value creation\nBenefits: Private Medical, Dental and Vision, Contributory Pension, 25 Days holiday plus bank holidays and Life/Critical Illness Insurance.\nDiverse & 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. \nFractile is seeking to increase the clock speed of global progress, one chip at a time. We’ve recently raised $220M from investors including Founders Fund and Accel and our most important work lies ahead. Join us!\nExport controls\nOur work involves technologies subject to UK, US and other international export control regulations. Certain roles may require additional eligibility checks to ensure compliance with applicable law. We'll be transparent about this throughout the hiring process.","description_format":"text","description_chars":6229,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Processors, MCUs & AI Chips","AI Compute & Inference","AI Chips & Accelerators"],"lifecycle":[{"event":"open","at":"2026-09-05T08:14:59Z"}],"visa":[{"country":"GB","licensed_sponsor":true,"evidence":"Licensed UK visa sponsor (Skilled Worker)","filings_12m":null,"filings_prev_12m":null,"green_card_filings_12m":null,"median_offered_wage_usd":null,"route":"Skilled Worker","cap_exempt":false,"checked_at":"2026-10-17T06:21:15+00:00","sources":["UK Home Office: register of licensed sponsors (workers)"],"filings_for_role_12m":0}],"liveness":{"score":21,"band":"cold","label":"Long shot","p_open":1,"p_active":0.582,"p_room":0.36,"age_days":302,"expected_fill_days":195,"reasons":["conf:2","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/fractile-semiconductor-test-engineering-team-leader","json_url":"https://alion.io/job/fractile-semiconductor-test-engineering-team-leader.json","meta":{"generated_at":"2026-10-17T14:03:03Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":18908,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":51523},"rest":"https://alion.io/mcp/rest/get_company?id=51523"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Ffractile-semiconductor-test-engineering-team-leader"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Ffractile-semiconductor-test-engineering-team-leader"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Ffractile-semiconductor-test-engineering-team-leader"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/fractile-semiconductor-test-engineering-team-leader\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Ffractile-semiconductor-test-engineering-team-leader"}]}