Mechanical Engineering Internship

Who you are

• 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!
• 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

What the job involves

• 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
• 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

The application process

• Application close date: 12/31/2026

Benefits

• Medical, Dental, Vision
• Basic and supplemental life insurance
• Paid parental leave
• Short and long-term disability
• 401(k) with company match of up to 6%
• Paid Time Off: 15 days per year based on weekly scheduled hours
• 10 paid sick leave
• 13 company-paid holidays
• Equity for eligible employees