Engineering - mechanical science and engineering

Job Description Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supported by leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change.

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

As a Mechanical Engineer, you will play a critical role in the design, analysis, build, and operation of laser, pulsed power, vacuum vessel, and ancillary mechanical systems that are central to Xcimer’s excimer‑laser‑based IFE technology. We are seeking engineers who bring strong technical depth, hands‑on problem-solving skills, and a passion for building high‑performance hardware that will redefine the future of energy.

• Create 3D models, detail part drawings, assemblies, P&’s and interface control documents.
• Design structures and pressure vessels, perform proof-tests to code standards.
• Communicate and document design with mechanical, systems, laser and optical engineering and manufacturing team members.
• Support procurement of the hardware for the prototype laser amplifiers and optical conditioning equipment.
• Oversee and assist assembly by a team of interdisciplinary technicians.
• Support ongoing operation of the subject equipment and systems.
• Participate in concept studies supporting the use of these lasers in a power-producing IFE reactor, and other applications.
• Contribute to authoring work instructions, test plans, specifications, and other documentation for the integration and operation of complex systems of systems
• Provide manufacturing and production support and first-time engineering builds
• Participate in design reviews and help to streamline engineering processes
• Work with cross-functional teams that are responsible for selecting materials, manufacturing processes, and suppliers to produce world class hardware.
• Plan, coordinate, conduct tests, and review test data
• S. in Mechanical, Nuclear, Aerospace Engineering, or related field.
• Experience : 3-5 years in mechanical engineering, with a focus on industrial equipment design (preferred industries include semiconductor, solar, R+D, nuclear, fusion energy, lasers, defense).
• Proficiency with 3D CAD software (NX preferred).
• Experience getting design projects over the finish line, built, and qualified.
• Strong problem-solving skills and a hands-on approach to troubleshooting and testing.
• Interdisciplinary engineering experience is a plus.
• S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee of granted asylum

Candidates may be considered for other positions at Xcimer Energy, and our actual base salary will be determined on an individual basis and may vary based on job-related knowledge and skills, education, and experience. Xcimer Energy is proud to be an Equal Opportunity/Affirmative Action Employer and is committed to attracting, retaining, and developing a highly qualified, diverse, and dedicated work force.

Xcimer Energy hires and promotes people on the basis of their qualifications, performance, and abilities. We support the establishment and maintenance of a workplace that fosters trust, equality, and teamwork, in which all employees recognize and appreciate the diversity of individual team members. We provide all qualified applicants for employment and employees with equal opportunities for hire, promotion, and other terms and conditions of employment, regardless of their race, color, religion, gender,…