The Role
This 12-week onsite internship involves supporting electrical, pulsed-power, control systems, hardware, simulation, manufacturing, and other engineering projects for laser-driven inertial fusion systems. Interns work with expert mentors on real-world technical challenges, applying engineering skills through design, analysis, modeling, research, and development activities. The role is based at Xcimer Energy headquarters in Denver, Colorado.
Summary Generated by Built In
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!
Join Xcimer’s engineering internship program and gain hands-on experience in designing and building cutting-edge laser-driven inertial fusion hardware and software. As a summer intern, you will be integral to developing the systems needed for the world’s first commercial fusion energy power plant. We have multiple internship opportunities available across various disciplines, including Mechanical Engineering, Electrical Engineering, Physics, and Software Development. Please apply to the posting that best matches your background and interests.
During this 12-week program at our headquarters in Denver, CO, you’ll work alongside an industry expert mentor to tackle complex, real-world challenges in fields such as structures, mechanisms, optics, pulsed power, computational engineering, plasma physics, and manufacturing. We are seeking interns who are passionate about applying their technical skills, problem-solving abilities, and commitment to quality to drive the future of clean energy!
Application close date: 12/31/2026
Responsibilities will vary depending on each intern's are of expertise and interests
- Mechanical design and hardware development
- Mechanical and thermal analysis using finite element analysis
- Systems engineering
- Manufacturing engineering
- Electrical engineering (pulsed power)
- Control systems engineering
- Computational and software engineering (simulations)
- Nuclear engineering
- Optical engineering
- Plasma physics
Qualifications
- Qualified candidates must be enrolled in a Bachelor's, Master’s or PhD degree program from an accredited college or university in mechanical engineering, electrical engineer, physics, nuclear engineering, or other related engineering discipline.
- Application of technical skills outside of the classroom (examples include: extracurricular projects, volunteering, personal projects, laboratory research, or prior internship/work experience).
- Proficiency in CAD software for 3D modeling and simulation.
- Strong written, verbal, communication, and interpersonal skills.
- Passion for fusion energy!
- Ability to work full-time onsite through the duration of the 12 week internship program in Denver, CO.
- 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 of granted asylum.
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
40 hours sick time and holiday pay during internship.
Skills Required
- Enrollment in a Bachelor's, Master's, or PhD program at an accredited college or university in electrical engineering, mechanical engineering, physics, nuclear engineering, or a related engineering discipline
- Application of technical skills outside the classroom through extracurricular projects, volunteering, personal projects, laboratory research, or prior internship/work experience
- Proficiency in CAD software for 3D modeling and simulation
- Strong written, verbal, communication, and interpersonal skills
- Passion for fusion energy
- Ability to work full-time onsite in Denver, Colorado, for the entire 12-week internship
- Must be a U.S. citizen or national, U.S. permanent resident, or lawfully admitted refugee or asylee
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The Company
What We Do
Xcimer Energy is an inertial fusion company developing scalable, laser-driven fusion power systems to provide abundant, clean, and carbon-free energy. By utilizing novel excimer laser architecture to dramatically reduce costs, the company aims to commercialize laser inertial confinement fusion and deploy the world's first commercial laser fusion power plants to meet global decarbonization goals.
