Lead Experimental Physicist

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!

As the Lead Experimental Physicist, you will be responsible for independently driving complex laser‑based experiments from definition through execution and analysis. This role requires strong experimental physics judgment, deep interest in the underlying science, and the ability to quickly learn and master sophisticated systems. You will design experiments, develop/upgrade diagnostics, analyze and interpret data, and continuously identify opportunities to improve experimental performance.

You will work closely with scientists, engineers, technicians, shot directors, and leadership, serving as the technical driver for assigned experimental programs.

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!

• Act as the primary experimental owner for assigned laser experiments
• Rapidly learn and develop deep understanding of complex experimental platforms, including lasers, diagnostics, and supporting subsystems
• Design and execute experiments involving lasers, spectroscopy, imaging, and time resolved measurements
• Develop and apply appropriate diagnostics to understand system performance and debug experimental issues
• Translate high level scientific objectives into detailed experimental designs and test plans
• Review experimental results critically, identify limitations, and drive systematic improvements
• Perform quantitative post processing and analysis of spectroscopy and imaging data
• Modify, extend, and maintain data processing and analysis scripts
• Produce clear technical reports, presentations, and publishable quality results
• Interface with the scientific board and senior scientists to understand experimental priorities and required outcomes
• Collaborate closely with technicians and engineers, providing technical direction, mentoring, and training
• Troubleshoot nontrivial experimental, diagnostic, and system level issues
• Work effectively across disciplines, including experimentalists, theorists, engineers, and technicians

• PhD in Physics, Electrical Engineering, Applied Physics, or a closely related field, or equivalent experience
• Strong hands‑on experience with laser‑based experiments
• Solid understanding of optical and laser diagnostics
• Demonstrated ability to independently drive complex experimental work
• Experience debugging complex experimental systems and diagnosing root causes
• Willingness to learn pulsed power concepts
• Proficiency in data analysis and post processing
• Strong written and verbal communication skills
• High level of motivation, curiosity, and ownership mindset
• 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

• Familiarity with excimer lasers
• Experience in laser gain dynamics
• Experience with laser wavefront measurement
• Experience with deformable mirrors
• Experience with phase plates
• Experience with gas kinetics
• Experience with vacuum systems.
• Experience operating and aligning pulsed laser systems
• Experience producing scientific publications
• Experience working in multidisciplinary research laser facilities, such as national labs
• Experience with Matlab, Python, and LabVIEW.
• Prior experience mentoring technicians or junior team members

$200,000 - $225,000 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…