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Jobs at Lightmatter

45 open roles read nightly from companies’ own hiring pages. Each one links to the original ad.

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  • Sr. Staff Thermo-Mechanical Engineer

    2 months ago

    Lightmatter · Mountain View, California, United States

    Lead / staff$169K – $244K a yearEngineering

    Serve as the technical authority for thermo-mechanical simulation within the packaging organization, setting standards for model fidelity, validation methodology, and documentation practices adopted across the team.; Identify capability gaps in simulation tooling,…

  • Staff Photonics Design and Layout Engineer

    3 months ago

    Lightmatter · Boston, Massachusetts, United States +1

    Lead / staff$175K – $230K a yearEngineering

    We are hiring a Staff Photonics Design and Layout Engineer to join our rapidly growing team. In this role, you will be working closely with photonics, product, architecture, analog, digital and packaging teams to floorplan, design and layout block- and chip-scale photonic…

  • Sr. Staff Physical Design Engineer

    3 months ago

    Lightmatter · Toronto, Ontario, Canada

    Lead / staffCA$191K – CA$219K a yearEngineering

    Implement digital blocks in advanced tech nodes from synthesis through physical verification, using industry standard tools and flows; Drive fullchip STA signoff, review constraints, debug timing reports and implement ecos; Drive power analysis and optimization while balancing…

  • Sr. Staff Physical Design Engineer

    3 months ago

    Lightmatter · Boston, Massachusetts, United States

    Lead / staff$217K – $267K a yearEngineering

    Implement digital blocks in advanced tech nodes from synthesis through physical verification, using industry standard tools and flows; Drive fullchip STA signoff, review constraints, debug timing reports and implement ecos; Drive power analysis and optimization while balancing…

  • Staff Hardware Test & Bring-Up Engineer

    3 months ago

    Lightmatter · Mountain View, California, United States

    Lead / staff$167K – $193K a yearEngineering

    Lead end-to-end hardware bring-up for ATE HW, and partner directly with equipment suppliers to debug hardware anomalies.; Lead the initial electrical bring-up for our photonic ICs products mounted on system-level evaluation boards.; Architect and build robust, automated…

  • Staff Embedded Software Engineer

    3 months ago

    Lightmatter · Boston, Massachusetts, United States +1

    Lead / staff$175K – $220K a yearEngineering

    Collaborate across a multidisciplinary team including Photonic, Analog, Digital, Systems and Network experts to define control plane architecture for Lightmatter's photonic interconnect products.; Define diagnostics and monitoring architecture for photonic transceivers.;…

  • Staff High-Speed I/O Test Engineer

    3 months ago

    Lightmatter · Mountain View, California, United States

    Lead / staff$187K – $220K a yearEngineering

    You will be focused on validating and architecting package and system-level test strategies for high-speed I/O interfaces on Lightmatter’s novel product line. In this role, you will be responsible for setting up and executing high-speed electrical characterization, driving link…

  • Analog/Mixed Signal Architect

    3 months ago

    Lightmatter · Toronto, Ontario, Canada

    Lead / staffCA$124K – CA$177K a year

    Propose innovative solutions high-speed (50G and beyond) AMS circuit blocks custom to optical transceivers, such as drivers, TIAs, equalizers, ADC/DACs, PLLs, CDRs.; Work closely with the analog engineering design team to performance, power, and area estimates of the analog…

  • Digital Architect

    3 months ago

    Lightmatter · Boston, Massachusetts, United States +1

    Lead / staff$146K – $222K a year

    Lightmatter builds chips that enable extreme-scale artificial intelligence computing clusters. If you're a collaborative engineer or scientist who has a passion for innovation, solving challenging technical problems, and doing impactful work like building the world's first…

  • Photonics Hardware Validation Engineer

    4 months ago

    Lightmatter · Mountain View, California, United States

    $177K – $240K a yearEngineering

    You will need to understand our chip specifications well so that you can take responsibility for chip bring-up, testing, and validation of our next-generation Optical Interconnect products. This includes supporting the development of chip validation plans aligned to product…

  • Senior Laser & SOA Characterization Engineer

    4 months ago

    Lightmatter · Mountain View, California, United States

    Senior$210K – $265K a yearEngineering

    We are hiring a senior engineer for our Photonics Characterization team at Lightmatter. Lightmatter is redefining computing by building photonic systems that use light to enable high-bandwidth, energy-efficient AI computing.

  • Hardware Systems Technical Lead

    4 months ago

    Lightmatter · Toronto, Ontario, Canada

    Lead / staffCA$144K – CA$165K a yearEngineering

    Collaborate with system architects and technical leads to define and develop hardware systems for photonic AI infrastructure applications; Own hardware systems development throughout the full lifecycle, from concept through production; Define, develop, and review PCBAs to meet…

  • Mechanical Design Engineer

    5 months ago

    Lightmatter · Mountain View, California, United States

    Mid level$135K – $212K a yearEngineering

    Create CAD models of package stack-up and associated components.; Perform mechanical design analysis to identify and implement solutions that improve package mechanical integrity.; Execute tolerance stack-up analyses and create GD&T drawings for advanced packages — including…

  • Sr. Staff Photonics Systems Engineer

    6 months ago

    Lightmatter · Toronto, Ontario, Canada

    Lead / staffCA$185K – CA$217K a yearEngineering

    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…

  • Staff / Sr. Staff Photonics Test Engineer

    6 months ago

    Lightmatter · Mountain View, California, United States

    Lead / staff$187K – $260K a yearEngineering

    You 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…

  • Principal Digital (mixed-signal) Architect

    8 months ago

    Lightmatter · Toronto, Ontario, Canada

    Lead / staffCA$191K – CA$362K a year

    Be the digital architecture owner of Lightmatter’s Passage product.; Responsible for the digital architecture from initial concept through high-volume production. Work closely with the technical program manager(s) to plan, organize, and execute.; Lead direct collaboration with…

  • Staff/Sr. Staff Design Verification

    11 months ago

    Lightmatter · Mountain View, California, United States

    Lead / staff$196K – $257K a yearDesign

    Define and enhance the DV methodologies required for integrated digital, analog, and photonic devices with a strong emphasis on emulation for design verification.; Create and execute test plans to ensure high-quality tapeouts that meet functional and performance goals, while…

  • Principal Digital (mixed-signal) Architect

    11 months ago

    Lightmatter · Boston, Massachusetts, United States +1

    Lead / staff$217K – $325K a year

    Be the digital architecture owner of Lightmatter’s Passage product.; Responsible for the digital architecture from initial concept through high-volume production. Work closely with the technical program manager(s) to plan, organize, and execute.; Lead direct collaboration with…

  • Photonics Systems Circuit Design Engineer

    11 months ago

    Lightmatter · Boston, Massachusetts, United States +1

    $200K – $267K a yearEngineering

    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…

  • Staff/Sr. Staff Design Verification Engineer

    12 months ago

    Lightmatter · Toronto, Ontario, Canada

    Lead / staffCA$203K – CA$224K a yearEngineering

    Define and enhance the DV methodologies required for integrated digital, analog, and photonic devices with a strong emphasis on emulation for design verification.; Create and execute test plans to ensure high-quality tapeouts that meet functional and performance goals, while…

Updated 06 Nov 2026 09:37 UTC from the OptiTalent job library.