XE

Xcimer Energy

Verified Job Source

We build lasers for commercial fusion energy and next-generation defense.

Denver, CO

Energy Technology
51–200 people

About

We're developing an excimer-based laser fusion architecture to commercialize safe, affordable fusion energy while advancing national security. We employ nearly 200 people, mostly in our Denver headquarters. We're funded by leading energy investors and the U.S. Department of Energy. Join us: https://xcimer.energy/careers/

Open positions

Mechanical Engineer

On-site · Quinte West

The Mechanical Engineer will design, analyze, build, and operate laser, pulsed power, and vacuum vessel systems for inertial fusion technology. They will manage the full product lifecycle, from early prototypes to power-producing reactor demonstrations, while coordinating with cross-functional teams.

Senior Opto-Mechanical Engineer, Large Optics Structures

On-site · Quinte West

You will own the mounting concepts and supporting structures for large-scale optics, managing the process from first principles through to installed hardware. This involves performing structural-thermal-optical performance analysis and leading the assembly, alignment, and testing of precision optical systems.

Mechanical Engineer / Senior Mechanical Engineer, Opto-Mechanics

On-site · Quinte West

You will design, build, and test mechanical hardware for deep-UV laser systems, managing the full lifecycle from requirements to assembly and alignment. This hands-on role involves working in optics labs and cleanrooms to ensure high-precision performance of optical components.

HVAC Technician

On-site · Quinte West

The HVAC Technician performs preventative and corrective maintenance on industrial HVAC systems while overseeing large commercial installations and energy-efficiency retrofits. They are responsible for leading teams, interpreting blueprints, and ensuring all work adheres to safety regulations and manufacturer standards.

Mechanical Engineer - Pulsed Power

On-site · Quinte West

Design, integrate, test, and support high-voltage pulsed power systems and their mechanical components, including generator assemblies, structures, and support equipment. Lead prototype design efforts, analyze and troubleshoot system performance, coordinate with vendors and interdisciplinary teams, and help scale designs for inertial fusion power reactors.

Optical Operations Technician

On-site · Quinte West

The technician will perform optical assembly, alignment, and vacuum system operations while adhering to strict cleanroom and safety protocols. They will also participate in lean manufacturing initiatives and collaborate with multi-functional teams to support laser system operations.

Pulsed Power Manufacturing Engineer

On-site · Quinte West

The Pulsed Power Manufacturing Engineer will optimize production lines for pulsed power assemblies by translating engineering designs into operational hardware and authoring detailed work instructions. They will also drive continuous improvement in quality and throughput while serving as the primary technical point of contact for production teams.

Optical Manufacturing Engineer

On-site · Quinte West

The engineer will optimize production lines for optical assemblies and translate engineering designs into operational hardware through work instruction development and hands-on assembly. They will also drive continuous improvement initiatives, provide DFM/A input, and serve as the primary technical point of contact for production teams.

Electrical Engineer — Signal Distribution & Controls

On-site · Quinte West

The Electrical Engineer will own the end-to-end electrical architecture, including signal distribution, control panel design, and harness routing for fusion energy systems. They will also develop P&IDs and interface diagrams while leading system integration, commissioning, and failure analysis activities.