{"id":82246,"url":"https://alion.io/job/lightmatter-staff-sr-staff-photonics-test-engineer","title":"Staff / Sr. Staff Photonics Test Engineer","company":{"id":16141,"name":"Lightmatter","domain":"lightmatter.co","url":"https://alion.io/company/lightmatter-co","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":81,"open_postings":21,"ghost_share":0,"stale_share":0.762,"repost_share":0,"time_to_fill_p50_days":43,"computed_at":"2026-10-22T06:10:10Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"staff","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Mountain View, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":187000,"max":220000,"currency":"USD","period":"year","gross":null,"usd_annual":220000},"salary_estimate":null,"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"C#","optional":false},{"name":"HPC","optional":false},{"name":"Python","optional":false}],"status":"live","first_seen_at":"2026-04-24T23:51:35Z","employer_posted_date":"2026-10-09","last_verified_at":"2026-10-22T07:25:19Z","board_verified":true,"closed_at":null,"days_open":180,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":180},"description":"Lightmatter is leading the revolution in AI data center infrastructure, enabling the next giant leaps in human progress. The company invented the world’s first 3D-stacked photonics engine, Passage™, capable of connecting thousands to millions of processors at the speed of light in extreme-scale data centers for the most advanced AI and HPC workloads.\nLightmatter raised $400 million in its Series D round, reaching a valuation of $4.4 billion. We will continue to accelerate the development of data center photonics and grow every department at Lightmatter!\nIf you're passionate about tackling complex challenges, making an impact, and being an expert in your craft, join our team of brilliant scientists, engineers, and accomplished industry leaders.\nLightmatter is (re)inventing the future of computing with light!\nAbout this Role\nYou will be focused on architecting wafer, package and system level characterization and test strategies of Lightmatter’s novel Silicon Photonic product line. As part of this role you will have the ability to directly influence the design and development of Lightmatter silicon photonics technologies. You will be part of a growing interdisciplinary team with a lot of opportunities to learn and make a big impact.\nResponsibilities\nWork directly with the architecture and design teams to understand the technology and conceptualize characterization and test techniques targeting feedback for design model validations.\nArchitect test concepts, test platforms, design for test rules, and provide feedback early on during the technology concept phase.\nCreate detailed test plan documentation and ensure timely execution.\nDefine, develop, and setup of wafer, package and system level tests for Lightmatter silicon photonics products. \nDevelop test software to enable test execution, data analysis, and parameter extraction.\nWork with vendors to specify and procure test equipment.\nSetup and operate a range of optical equipment such as tunable lasers, power meters, polarization synthesizer, OBR/OVA, and high-speed test equipment.\nEngage with silicon and platform validation teams and bridge any gaps between test and validation teams.\nWork with OSAT teams to define, validate, and refine test techniques for high volume manufacturing.\nWork with the reliability team for pre and post-stress test needs.\nKeep up to date with the latest developments in Silicon Photonics technology and testability.\nRequirements:\nMaster’s in Photonics, Physics, Electrical Engineering or a related field\nA minimum of 6+ years of proven experience in silicon photonics test development \nProven industrial experience in supporting new product introduction and volume production \nUnderstanding of Silicon Photonics components and circuits\nExperience working with design teams to define test cells for model feedback and validation \nHands on experience in characterization and test of photonics components and circuits \nDirect experience in high-speed photonic device test and familiar with test equipment such as AWG, DCA, DSO, PNA, LCA\nExperience in test system automation using Python, C#, or other languages\nStrong analytical and problem-solving skills to identify and solve issues during the testing process\nAbility to convey complex technical concepts to both technical and non-technical stakeholders \nPreferred Qualifications:\nPhD in Photonics, Physics, Electrical Engineering or a related field\n2+ years of photonic component or circuit design experience \nExposure to system link bring-up\nThis role requires working in out Mountain View, CA office 3 - 5 days a week.\nThis role is open to multiple levels. Education, years of experience, and interview performance will be the determining factor for leveling.\nStaff: $187,000 - $220,000\nSr Staff: $215,000 - $260,000\nWe offer competitive compensation. The base salary range for this role determined based on location, experience, educational background, and market data.\nSalary Range: total compensation goes beyond base salary, it also includes a new hire equity grant, annual performance-based equity, and other rewards that recognize your impact and contribution.\n$187,000—$260,000 USD\nBenefits\nComprehensive Health Care Plan (Medical, Dental & Vision)\nRetirement Savings Matching Program\nLife Insurance (Basic, Voluntary & AD&D)\nGenerous Time Off (Vacation, Sick & Public Holidays)\nPaid Family Leave\nShort Term & Long Term Disability\nTraining & Development\nCommuter Benefits\nFlexible, hybrid workplace model\nEquity grants (applicable to full-time employees)\nBenefits eligibility may vary depending on your employment status and location. Lightmatter recruits, employs, trains, compensates, and promotes regardless of race, religion, color, national origin, sex, disability, age, veteran status, and other protected status as required by applicable law.\nExport Control\nCandidates should have capacity to comply with the federally mandated requirements of U.S. export control laws.","description_format":"text","description_chars":4948,"description_truncated":false,"requirements":{"experience_years_min":6,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":false},"security_clearance":false,"languages":[]},"benefits":["Equity","Life insurance","Parental leave"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Optical Communications","AI Chips & Accelerators","Optics & Photonic Components"],"lifecycle":[{"event":"open","at":"2026-04-24T23:51:35Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 27 · green card filings: 1","filings_12m":27,"filings_prev_12m":14,"green_card_filings_12m":1,"median_offered_wage_usd":177679,"route":null,"cap_exempt":false,"checked_at":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":0}],"liveness":{"score":11,"band":"cold","label":"Long shot","p_open":1,"p_active":0.381,"p_room":0.28,"age_days":180,"expected_fill_days":43,"reasons":["conf:2","stale_co","velocity","win:tail","crowd:"],"computed_at":"2026-10-22T06:10:10Z"},"pay":{"stated_usd_annual":220000,"is_top_pay":true},"html_url":"https://alion.io/job/lightmatter-staff-sr-staff-photonics-test-engineer","json_url":"https://alion.io/job/lightmatter-staff-sr-staff-photonics-test-engineer.json","meta":{"generated_at":"2026-10-22T10:29:22Z","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":7714,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-23T00:00:00Z"}},"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":16141},"rest":"https://alion.io/mcp/rest/get_company?id=16141"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Flightmatter-staff-sr-staff-photonics-test-engineer"},{"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%2Flightmatter-staff-sr-staff-photonics-test-engineer"},{"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%2Flightmatter-staff-sr-staff-photonics-test-engineer"},{"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/lightmatter-staff-sr-staff-photonics-test-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Flightmatter-staff-sr-staff-photonics-test-engineer"}]}