Senior Opto-Mechanical Engineer, Large Optics Structures

Xcimer

Denver, CO Posted November 5, 2026

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On-site Full-time Senior
Job Description

Xcimer Energy builds on decades of research in Inertial Fusion Energy (IFE), combined with a groundbreaking new laser architecture, to accelerate the deployment of fusion power plants. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a world-class team spanning tough tech, fusion science, and advanced manufacturing, with a proven track record of rapid execution.

Supported by leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change. Join us in powering a better world with inertial fusion!

 

This is a full-time, onsite role based at our headquarters in Denver, CO. 

 

Xcimer's laser architecture transports high-energy deep-UV beams through meter-class, segmented mirror arrays. The optical performance of the entire system depends on how well those mirrors are held: mount-induced stress, thermal gradients, gravity sag, and facility vibration all couple directly as degraded beam quality for our lasers. You will own the mounting concepts and the supporting structures for our largest optics, from first principles through installed, measured hardware.

This is a hands-on senior role where you will spend time in the optics labs and on the integration floor, and you will be a technical leader on a small, fast-moving team.

Required Skills
mechanical engineering manufacturing
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