{"id":2970462,"url":"https://alion.io/job/lyte-senior-photonics-engineer","title":"Senior Photonics Engineer","company":{"id":30000,"name":"Lyte","domain":"lyte.ai","url":"https://alion.io/company/lyte","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Rippling","truth_index":{"grade":"A","score":95,"open_postings":35,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":175,"computed_at":"2026-11-01T06:10:25Z"}},"role":"Semiconductors","role_family":"Semiconductors","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Sunnyvale, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":130000,"max_usd":238000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":83},"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Python","optional":false}],"status":"live","first_seen_at":"2026-10-20T21:47:19Z","employer_posted_date":"2026-10-20","last_verified_at":"2026-11-01T08:33:52Z","board_verified":true,"closed_at":null,"days_open":11,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":11},"description":"About Lyte\nLyte builds perception systems for Physical AI operating in complex environments. The company combines custom silicon, integrated sensors, and software into a unified platform for robotics, mobility, and next-generation automation. Lyte is headquartered in Sunnyvale, California, with a global presence. For more information, visit www.lyte.ai\nIf you’re excited about building impactful technology in a dynamic, hands-on environment, we’d love to hear from you!\nAbout the role\nWe are seeking a senior Photonics Engineer to design silicon photonic devices, subcircuits, and photonic integrated circuits (PICs) for Lyte’s next-generation perception systems. As a member of the Photonics Design and Architecture team, you will translate architecture-level requirements, including optical link budgets, component specifications, and interface requirements, into optimized designs, validated simulation models, and tapeout-ready layouts. This is a hands-on technical role with end-to-end ownership of assigned components and subcircuits, from simulation and layout through design verification, tapeout, and documentation. You will work closely with the silicon team, which owns test and validation, and deliver complete design handoffs that enable transfer to production.\nWhat you'll do\nDesign photonic components and subcircuits. Design passive and active silicon and silicon nitride devices, including couplers, splitters, interferometers, polarization-management components, phase shifters, switches, and optical interfaces.\nSimulate and optimize performance. Use electromagnetic, optical-circuit, and thermal simulation to predict device behavior. Optimize designs against specifications for insertion loss, bandwidth, polarization response, footprint, power, and fabrication tolerance.\nContribute to architecture definition. Provide device-level performance models, simulation data, and tradeoff analyses that inform optical link budgets, component specifications, interface requirements, and performance margins.\nDevelop tapeout-ready layouts. Implement component and subcircuit layouts in accordance with foundry design rules, run design-rule checks, and prepare design files for review and integration into full PIC layouts.\nVerify designs and support tapeout signoff. Evaluate nominal performance, process sensitivity, and operating-condition limits. Document assumptions, margins, and open risks, and present results in design reviews and cross-functional tapeout signoff.\nAdvance the PDK. Develop and maintain parameterized cells (PCells), compact models, component documentation, and reusable design elements. Update models and design guidance as characterization data become available.\nAutomate engineering workflows. Build Python tools for simulation setup, parameter sweeps, optimization, layout generation, and data analysis. Maintain reproducible workflows and version-controlled design assets.\nCo-design for optical and system integration. Incorporate requirements for III-V sources, free-space coupling, packaging, thermal management, and electrical interfaces into device and subcircuit designs. Work with the III-V, packaging, and IC teams to close interface requirements.\nPartner with the silicon team on test and validation. Define test structures, design-of-experiment (DOE) splits, and characterization objectives. Provide predicted responses and measurement priorities, interpret results with the silicon team, and use findings to improve designs, models, and the PDK.\nDeliver complete design handoffs. Deliver design files, specifications, simulation results, interface requirements, and functional documentation to the silicon team for production transfer. Support the silicon and operations teams with technical questions and design revisions following handoff.\nRequired Qualifications\nM.S. or Ph.D. in electrical engineering, physics, optics, or a related discipline, or a B.S. with equivalent industry experience.\n8+ years of relevant industry experience (or a Ph.D. with 5+).\nHands-on experience designing silicon or silicon nitride active and passive photonic components, with design ownership on multiple completed PIC tapeouts.\nStrong understanding of waveguide optics, semiconductor device physics, and fabrication-dependent device performance.\nProficiency with electromagnetic simulation methods such as FDTD, eigenmode solvers, and eigenmode expansion (EME), as well as optical-circuit simulation with Lumerical, Tidy3D or equivalent.\nExperience with schematic driven layout in Cadence or Synopsys, foundry design rules, and pre-tapeout design verification including LVS/DRC.\nProficiency in Python for scientific computing, simulation automation, and data analysis.\nDemonstrated ability to independently own designs from specification through tapeout, evaluate tradeoffs, and communicate results clearly to technical and cross-functional audiences.\nExperience using version control and maintaining organized, reproducible engineering work.\nPreferred Qualifications\nExperience developing PCells, compact models, and PDK component libraries.\nExposure to III-V devices and understanding of lasers, semiconductor optical amplifiers, including hybrid or heterogeneous integration with silicon photonics.\nExposure to optical packaging, micro-optics, or free-space coupling.\nExperience correlating simulated device behavior with measured results.\nFamiliarity with statistical variation analysis (e.g., Monte Carlo and corner analysis) and numerical optimization.\nExperience mentoring engineers or leading technical design reviews.\nBenefits (subject to location and local regulations)\nCompetitive salary and equity \nComprehensive medical, dental, and vision coverage \n401(k) retirement plan \nFlexible vacation and time-off policy \nCollaborative, fast-paced, and inclusive work environment \nOpportunity to work on cutting-edge technologies with a highly cross-functional team","description_format":"text","description_chars":5910,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":false},"security_clearance":false,"languages":[]},"benefits":["Equity","Retirement plans"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Optical Communications","Artificial Intelligence","Machine Vision & 3D Cameras"],"lifecycle":[{"event":"open","at":"2026-10-21T02:06:39Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 5 · green card filings: 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