Summer 2027 Internship - Computational and Software Engineering

Xcimer Energy

Sourced from Xcimer Energy's careers site · Posting last seen November 2, 2026

Denver, CO on site Internship Posted September 12, 2026
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. 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 an 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.

Compensation (from employer):
25–35 USD per-hour-wage

Skills

  • enrollment in an accredited bachelor's, master's, or PhD program in engineering, physics, or a related discipline
  • application of technical skills outside the classroom
  • CAD software
  • 3D modeling
  • simulation
  • written communication
  • verbal communication
  • interpersonal skills
  • full-time on-site availability for 12 weeks in Denver, CO
  • U.S. citizenship or national status, U.S. permanent residency, or refugee/asylee status
  • computational engineering
  • software engineering
  • simulations
  • fusion energy
About this role

Summary

Develop and simulate engineering systems for laser-driven inertial fusion hardware and software alongside an expert mentor.

Job title

Summer 2027 Internship - Computational and Software Engineering

Experience level

internship

Industry

energy

Location

Denver, CO · On-site

Salary

25–35 USD per-hour-wage

Listed in the job description

Management role

No

Posting history
  1. Sep 12, 2026 First posted
  2. Sep 12, 2026 Live now

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