Engineering - mechanical science and engineering

Xcimer Energy; Denver (CO); On-site; USD 85,000 - 120,000; Full time

Benefits offered by this job

Medical coverage

Dental coverage

Vision coverage

Equity

Paid time off

Job summary

Xcimer Energy in Denver, CO is seeking a Mechanical Engineer to design, analyze, build and operate laser‑driven mechanical systems central to our excimer‑laser IFE technology. You will create 3D models, detail drawings, assemblies and interfaces, design structures and pressure vessels, and support prototyping, testing and documentation.

Qualifications include a BS in Mechanical, Nuclear or Aerospace Engineering, 3–5 years in industrial equipment design, NX CAD proficiency, and U.S.

Qualifications

• S. in Mechanical, Nuclear, or Aerospace Engineering, or related field.
• 3–5 years in mechanical engineering, focusing on industrial equipment design.
• Proficiency with 3D CAD software (NX preferred).
• Experience delivering design projects from concept to qualification.
• Strong problem-solving and hands-on troubleshooting skills.
• Interdisciplinary engineering experience is a plus.
• S. citizen or national, U.S. permanent resident, or eligible for work in the U.S.

Responsibilities

• Create 3D models, detail part drawings, assemblies, P&IDs and interface control documents.
• Design structures and pressure vessels; perform proof-testing to code standards.
• Communicate and document design with cross‑functional teams (mechanical, systems, laser, optical, manufacturing).
• Support procurement of hardware for prototype laser amplifiers and conditioning equipment.
• Oversee and assist assembly by interdisciplinary technicians; support ongoing operation of equipment.
• Participate in concept studies for laser use in IFE reactor and other applications.
• Contribute to work instructions, test plans, specifications and documentation for system integration.
• Provide manufacturing and production support and first-time engineering builds.
• Participate in design reviews and help streamline engineering processes.
• Collaborate with teams selecting materials, processes and suppliers to produce world‑class hardware.

Skills

3D CAD NX

Mechanical design

Fabrication & testing

Cross‑functional teamwork

Education

Bachelor's in Mechanical/Nuclear/Aerospace Engineering

Tools

NX

Job description

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. Supportedby 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&ID’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, sexual orientation, gender identity, national origin/ethnicity, age, physical or mental disability, genetic factors, military/veteran status, or any other status or characteristic protected by federal, state, and/or local law. Xcimer Energy will consider for employment qualified applicants with criminal histories in a manner consistent with applicable federal, state, and local laws.

Benefits include medical, dental, and vision coverage; basic and supplemental life insurance; short- and long-term disability; Eligible employees also receive equity, allowing them to share in the company’s long-term success.

Xcimer operates under a flexible Paid Time Off (ATO) approach. In addition, employees receive paid sick time, 13 company-paid holidays, and an annual paid company shutdown. Benefits are available to regular employees, including part-time and fixed-term roles, as well as interns, with eligibility varying by benefit.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. If you would like more information about how your data is processed, please contact us.