{"schemaVersion":"jobsearcher.job.v1","id":"c332099ee6628d2893efbde2","url":"https://jobsearcher.com/jobs/c332099ee6628d2893efbde2","canonicalUrl":"https://jobsearcher.com/jobs/c332099ee6628d2893efbde2","title":"Electro-Optic Link Hardware Engineer","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! We're looking for a hands-on Photonics engineer to lead verification and characterization of high-speed electro-optic links across multiple silicon and system programs. You'll work at the bench alongside the EOE team owning modeling methodology, measurement standards, and serving as the escalation point for the toughest signal integrity and link-performance problems in the org.\nResponsibilities: \n\nRun hands-on lab characterization and debug of high-speed electrical/optical hardware, including novel failure modes\nBuild system-level electrical/optical/EO channel models and correlate them against your own bench measurements\nOwn link budget and verification methodology while staying hands-on with the validating measurements\nCharacterize eye diagrams, BER, jitter, equalization, and channel impairments\nSupport silicon bring-up and root-cause debug with analog, package, PCB, and SerDes teams\nInfluence chip/package/system architecture tradeoffs based on bench findings\nMentor Senior/Staff engineers without stepping back from lab work\nBuild automation/tools to speed up characterization work\n\nQualifications:\n\nMS/PhD in EE, Photonics, Physics (8+ yrs) or BS/MS (10+ yrs)\nOwnership of verification strategy for a full silicon/system program\nDeep expertise in 56G/112G/224G+ serial links, SerDes equalization (CTLE/FFE/DFE), and signal integrity (S-parameters, crosstalk, link budgets)\nHands-on lab experience leading investigations that stalled others\nStrong Python/MATLAB for team-used automation frameworks\nProficiency with VNA, scopes, BERTs, TDRs, and tools like ADS, HFSS, Cadence, COMSOL\nTrack record mentoring engineers\n\nPreferred Qualifications:\n\nSilicon photonics/EO systems at the architecture level\nPackage/PCB/channel co-design ownership\nCOM/IBIS-AMI modeling, patents/standards contributions (OIF, IEEE 802.3)\n We offer competitive compensation. The base salary range for this role determined based on location, experience, educational background, and market data. Salary 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. $195,000—$250,000 USD Benefits \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)\n\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.","company":"Lightmatter","rawCompany":"lightmatter","city":"Mountain View","state":"CA","isRemote":false,"isActive":true,"createdAt":"2026-08-02T03:32:23.456Z","occupations":[{"code":"17-2199.07","title":"Photonics Engineers","slug":"photonics-engineers"},{"code":"17-2199.00","title":"Engineers, All Other","slug":"engineers-all-other"},{"code":"17-2072.00","title":"Electronics Engineers, Except Computer","slug":"electronics-engineers-except-computer"}],"industries":[{"code":"541715","title":"Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)","slug":"research-and-development-in-the-physical-engineering-and-life-sciences-except-nanotechnology-and-biotechnology"},{"code":"334413","title":"Semiconductor and Related Device Manufacturing","slug":"semiconductor-and-related-device-manufacturing"},{"code":"334419","title":"Other Electronic Component Manufacturing","slug":"other-electronic-component-manufacturing"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Electro-Optic Link Hardware Engineer","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! We're looking for a hands-on Photonics engineer to lead verification and characterization of high-speed electro-optic links across multiple silicon and system programs. You'll work at the bench alongside the EOE team owning modeling methodology, measurement standards, and serving as the escalation point for the toughest signal integrity and link-performance problems in the org.\nResponsibilities: \n\nRun hands-on lab characterization and debug of high-speed electrical/optical hardware, including novel failure modes\nBuild system-level electrical/optical/EO channel models and correlate them against your own bench measurements\nOwn link budget and verification methodology while staying hands-on with the validating measurements\nCharacterize eye diagrams, BER, jitter, equalization, and channel impairments\nSupport silicon bring-up and root-cause debug with analog, package, PCB, and SerDes teams\nInfluence chip/package/system architecture tradeoffs based on bench findings\nMentor Senior/Staff engineers without stepping back from lab work\nBuild automation/tools to speed up characterization work\n\nQualifications:\n\nMS/PhD in EE, Photonics, Physics (8+ yrs) or BS/MS (10+ yrs)\nOwnership of verification strategy for a full silicon/system program\nDeep expertise in 56G/112G/224G+ serial links, SerDes equalization (CTLE/FFE/DFE), and signal integrity (S-parameters, crosstalk, link budgets)\nHands-on lab experience leading investigations that stalled others\nStrong Python/MATLAB for team-used automation frameworks\nProficiency with VNA, scopes, BERTs, TDRs, and tools like ADS, HFSS, Cadence, COMSOL\nTrack record mentoring engineers\n\nPreferred Qualifications:\n\nSilicon photonics/EO systems at the architecture level\nPackage/PCB/channel co-design ownership\nCOM/IBIS-AMI modeling, patents/standards contributions (OIF, IEEE 802.3)\n We offer competitive compensation. The base salary range for this role determined based on location, experience, educational background, and market data. Salary 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. $195,000—$250,000 USD Benefits \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)\n\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.","datePosted":"2026-08-02T03:32:23.456Z","dateModified":"2026-08-02T03:32:23.456Z","hiringOrganization":{"@type":"Organization","name":"Lightmatter","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Mountain View","addressRegion":"CA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"c332099ee6628d2893efbde2"},"url":"https://jobsearcher.com/jobs/c332099ee6628d2893efbde2"}}