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Senior IT Support Engineer

Lightmatter - Mountain View, CA

Posted Dec 5, 2025

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About this role

Senior IT Support Engineer Mountain View, CA 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, Passageā„¢, 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. Lightmatter 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! If 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. Lightmatter is (re)inventing the future of computing with light! We're looking for a Senior IT Support Engineer to join our User Services team in Mountain View. This is a hands-on, broad-scope role: you'll be the primary technical resource for our employees-onsite and remote-while also owning the core systems and infrastructure that keep the company running. Day to day, you'll split your time between resolving support tickets and administering the platforms behind them: cloud and productivity suites, identity management, our endpoint/MDM fleet, and conference room/AV environments, along with procurement and deployment of new hardware. You'll report to the Head of User Services and partner closely with the broader IT team on company-wide rollouts and larger projects. This is a senior individual-contributor role. We expect you to take full ownership of your

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