{"id":621703,"url":"https://alion.io/job/lumilens-assistant-test-engineer-optical-manufacturing","title":"Assistant Test Engineer - Optical Manufacturing","company":{"id":678172,"name":"Lumilens","domain":"lumilens.com","url":"https://alion.io/company/lumilens","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"A","score":89,"open_postings":149,"ghost_share":0.101,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":118,"computed_at":"2026-10-31T05:58:55Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"junior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Chon Buri, Thailand"],"countries":["TH"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":9000,"max_usd":23000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":5845},"experience_years_min":2,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Python","optional":false},{"name":"Perl","optional":true}],"status":"live","first_seen_at":"2026-08-26T04:30:02Z","employer_posted_date":"2026-08-26","last_verified_at":"2026-10-31T04:15:15Z","board_verified":true,"closed_at":null,"days_open":66,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":66},"description":"ABOUT LUMILENS\nAt Lumilens we are building the critical photonics infrastructure that powers tomorrow’s AI supercomputing. From chip-to-chip optical interconnects to scalable photonic engines, Lumilens is unlocking a new era of computing - faster, cooler, and massively more efficient.\nWe’re a well-funded startup backed by Mayfield and led by veterans who’ve built and scaled some of the most transformative technologies in the industry. At Lumilens, we’re developing high-speed photonics products purpose-built to power the future of AI infrastructure and high-performance computing.\nThis isn’t incremental innovation, it’s a ground-floor opportunity to rethink the optical layer from the silicon up. You’ll work alongside a team of world-class engineers solving some of the hardest challenges in scaling optical systems. Every line of code, every design decision, every breakthrough you help deliver will shape the infrastructure of tomorrow.\nIf you're looking for mission, momentum, and the chance to make an outsized impact, jump on the rocket ship. We’re just getting started.\nPOSITION OVERVIEW\nThe Assistant Test Engineer is responsible for performing functional, performance, and reliability testing on optical transceiver products (SFP, SFP+, QSFP, QSFP-DD, OSFP, CFP, etc.) throughout the manufacturing process, ensuring products meet OEM customer specifications and industry standards (MSA, IEEE, ITU, Telcordia) prior to shipment. Working alongside Test Engineering, Quality, and Production, this is a hands-on role at the line and in the lab - running test stations, maintaining fixtures and instrumentation, and turning test data into actionable findings that improve yield and throughput as Lumilens scales its optical interconnect products into high-volume manufacturing.\nDUTIES/RESPONSIBILITIES\nPerform incoming, in-process, and final testing of optical transceivers (e.g., optical power, sensitivity, extinction ratio, wavelength, BER, eye diagram, jitter, TX/RX parametric testing).\n\nOperate and maintain test equipment such as BERTs, optical power meters, optical spectrum analyzers, oscilloscopes, TEC controllers, and automated test stations.\n\nExecute test plans and procedures according to OEM customer specifications and MSA (Multi-Source Agreement) standards.\n\nLog, analyze, and report test data; identify and flag out-of-spec units, and support failure analysis and root cause investigation.\n\nCalibrate and troubleshoot test fixtures, jigs, and automated test equipment (ATE).\n\nSupport burn-in, environmental (temperature/humidity), and reliability testing (e.g., HTOL, thermal cycling).\n\nMaintain accurate documentation, test records, and traceability per quality system requirements (ISO 9001 / IATF / TL 9000, as applicable).\n\nCollaborate with Test Engineering, Quality, and Production teams to improve test yield, throughput, and process efficiency.\n\nSupport new product introduction (NPI) test bring-up and validation for new OEM programs.\n\nEnsure compliance with ESD, laser safety, and handling procedures for optical and electronic components.\n\nAssist in developing or refining test scripts/software (Python, LabVIEW, TCL) alongside engineering, as needed.\n\nSKILLS/EXPERIENCE\nAssociate degree or technical diploma in Electronics, Photonics, Engineering Technology, or a related discipline; equivalent practical experience will be considered.\n\n2+ years of hands-on experience testing optical transceivers or similar photonic/optoelectronic components in a manufacturing or OEM environment.\n\nWorking knowledge of optical transceiver form factors (SFP/SFP+/SFP28, QSFP/QSFP28/QSFP-DD, OSFP, CFP2/CFP4) and MSA specifications.\n\nFamiliarity with optical and electrical test parameters: optical power, wavelength, extinction ratio, sensitivity, jitter, eye diagrams, and BER.\n\nExperience operating test instruments: optical power meters, OSAs, BERTs, oscilloscopes, and network analyzers.\n\nUnderstanding of fiber optic handling, cleaning, and connector types (LC, MPO/MTP).\n\nAbility to read and interpret schematics, test procedures, and datasheets.\n\nBasic data analysis skills (Excel; scripting a plus).\n\nStrong attention to detail and documentation discipline.\n\nPreferred Qualifications\nExperience supporting OEM/ODM customer qualification and PPAP/FA (First Article) processes.\n\nFamiliarity with ISO 9001, TL 9000, or IATF 16949 quality systems.\n\nScripting and automation experience (Python, LabVIEW, TCL, Perl).\n\nExperience with 100G/400G/800G transceiver testing.\n\nPrior experience in a cleanroom or ESD-controlled manufacturing environment.\n\nLaser safety training or certification.\n\nPhysical Requirements\nAbility to work in a lab and production environment, including standing for extended periods.\n\nAbility to handle small precision components and use fine tools.\n\nComfortable working near Class 1 laser sources following established safety protocols.\n\nAll qualified applicants will receive consideration for employment without regard to race, color, religion, religious creed, sex, national origin, ancestry, age, physical or mental disability, medical condition, genetic information, military and veteran status, marital status, pregnancy, gender, gender expression, gender identity, sexual orientation, or any other characteristic protected by local law, regulation, or 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