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XcimerEnergy 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 Pulsed Power Simulation & Modeling Engineer, you will apply your skills to creating models of, and simulating cutting‑edge pulsed power electrical and mechanical systems. This role encompasses the use of multi‑physics and electromagnetics solvers to aid in the design and optimization of associated systems and components. We are looking for our Pulsed Power Simulation & Modeling Engineer to apply their technical expertise, problem solving skills, and dedication to quality to positively impact the future of energy!

• Work with pulsed power design engineers to generate models of systems and components
• Work with a multidisciplinary team to create, optimize and validate models of complex physical processes and phenomena.
• Aid in the design of experiments for validation of models against real‑world data
• Work with design engineers to enhance the workflow from concept to final print based upon optimizations in simulation.

• Education: B.S. or M.S. in Mechanical or Electrical Engineering
• Experience: 2+ years of experience with field solver/particle‑in‑cell/circuit simulation codes
• Strong communication skills across disciplines and departments
• Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum

• Proficiency in COMSOL, CST and/or LT‑SPICE
• Proficiency in solid‑modeling software, e.g. SolidWorks or NX
• Strong knowledge of electromagnetic field principles
• Mechanical design skills – knowledge of GD&T principles a plus
• Proficiency with Python and/or MATLAB. Experience with VBA and Java a plus

$120,000 - $160,000 a year

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. The range is published in accordance with Colorado Equal Pay for Equal Work Act and California Equal Pay Act.

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 workforce. 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. For more information on “EEO Is the Law,” please see here and here.

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.