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Laser/Optical Simulation Engineer

Xcimer Energy · Denver, CO

Extracted from the posting

Base
$175,000 – $225,000
Equity
Eligible for equity; terms not stated
Remote
Onsite, Denver HQ
Visa
Must be US citizen, national, green card holder, refugee or asylee
Stack
Zemax, FRED

Laser/Optical Simulation Engineer at Xcimer Energy, a full-time onsite role in Denver, CO. The role owns and develops an end-to-end digital twin (virtual beamline) of Xcimer's excimer laser and nonlinear optical compression architecture, running Monte Carlo and sensitivity studies on HPC resources. It works with Theory/Computation, Software, Optical, and Mechanical Engineering teams.

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. Join us in powering a better world with inertial fusion!

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

As a

Laser/Optical Simulation Engineer

, you will apply your skills and creativity to help develop and take ownership of an end-to-end digital twin (“virtual beamline”) for our fusion laser architecture that utilizes excimer lasers and nonlinear optical compression! You will help develop new modules, define requirements and interfaces for new modules developed by other teams, improve functionality and performance, and ultimately use this end-to-end model to perform system-level trade studies and sensitivity analyses in order to refine hardware requirements. We are looking for our scientists and engineers to apply their technical expertise, problem solving skills, and dedication to quality to positively impact the future of energy!

Responsibilities

    Qualifications

      Desired

        Equal Employment Opportunity

        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

        Xcimer offers a comprehensive benefits package designed to support employee health, well-being, and long-term success. Benefits include medical, dental, and vision coverage; basic and supplemental life insurance; short- and long-term disability; paid parental leave for employees at the time of birth or adoption; and a 401(k) with a company match of up to 6%. 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. Rather than a fixed number of vacation days, employees are trusted to take the time they need to rest and recharge while meeting the expectations of their role and team. 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.

        Compensation: USD 175,000 – 225,000 per year salary

        Technologies

        ZemaxFRED
        Xcimer Energy
        Xcimer Energy

        Job details

        TypeFull-time
        Work ModeOn-site
        LevelSenior
        Location🇺🇸Denver, CO
        Salary$175,000 - $225,000
        PostedNov 06, 2026
        Apply Now