Top 52 Physicist Jobs in Colorado

Senior Pulsed Power Physicist
Xcimer Energy —Denver, CO
- $170,000 - $200,000 a year
- Full-time
- 5 years
- Office
- Analysis skills
- Paid parental leave
- Paid holidays
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Plasma Computational Scientist
Electro Magnetic Applications, Inc. —Lakewood, CO
- $90,000 - $125,000 a year
- Full-time
- Laboratory experience
- Mid-level
- Doctor of Philosophy
- Paid parental leave
- Health savings account
Quick Apply
5d
Medical Physicist
Rad Onc Solutions —Lone Tree, CO
- Full-time
- Mid-level
- Radiology
Quick Apply
Radiation Health Physicist - Environmental Remediation
Jacobs —Denver, CO
- $74,700 - $112,000 a year
- Hybrid work
- Bachelor of Science
- Data analysis skills
- Office
- Paid holidays
- Health insurance
Computational and Modeling Physicist
Booz Allen Hamilton —Colorado Springs, CO
- $99,000 - $225,000 a year
- Full-time
- Office
- 3 years
- Master's degree
- Disability insurance
- Health insurance
13d
Senior Physicist
Arcfield —Colorado Springs, CO
- $103,623.54 - $180,181.23 a year
- Full-time
- Management
- Bachelor of Science
- 3 years
- Paid holidays
- Disability insurance
Lead Experimental Physicist
Xcimer Energy —Denver, CO
- $200,000 - $225,000 a year
- Full-time
- Doctor of Philosophy
- Mentoring
- Fair chance
- Paid parental leave
- Paid holidays
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Lead Physicist – Apollo Integration and Verification - 790
Quantinuum —Broomfield, CO
- $164,000 - $205,000 a year
- Full-time
- Pass drug screening
- 8 years
- Doctor of Philosophy
- Paid parental leave
- Paid holidays
Sr. Scientist
Sierra Nevada Corporation —Lone Tree, CO
- $124,771.42 - $171,560.71 a year
- Full-time
- Office
- Master's degree
- Doctor of Philosophy
- Health insurance
- Dental insurance
Laser Plasma Interaction Computational Physicist
Xcimer Energy —Denver, CO
- $170,000 - $210,000 a year
- Full-time
- System design
- Office
- C++
- Paid parental leave
- Paid holidays
Quick Apply
Simulation Physicist - Ion Transport and Waveform Design
IonQ —Boulder, CO
- $110,336 - $144,459 a year
- Doctor of Philosophy
- Travel
- In-person
- Paid holidays
- Health insurance
Quick Apply
Medical Physicist
Siemens Healthineers —Colorado Springs, CO
- Full-time
- Up to 50% travel
- Customer service
- Clinic experience
- Relocation assistance
Quantum Physicist
Infleqtion —Boulder, CO
- $115,000 - $165,000 a year
- Full-time
- Hybrid work
- Writing skills
- Assembly
- Math
- Paid parental leave
- Health savings account
Quick Apply
Atomic Source Physicist - 869
Quantinuum —Broomfield, CO
- $135,000 - $180,000 a year
- Full-time
- 5 years
- Pass drug screening
- Doctor of Philosophy
- Paid parental leave
- Paid holidays
Ion Transport Physicist - 893
Quantinuum —Broomfield, CO
- $148,000 - $185,000 a year
- Full-time
- Hybrid work
- 5 years
- Pass drug screening
- Doctor of Philosophy
- Paid parental leave
- Paid holidays
6d
Laser Physicist
Xcimer Energy —Denver, CO
- $140,000 - $190,000 a year
- Full-time
- Management
- Bachelor of Science
- Office
- Paid parental leave
- Paid holidays
Quick Apply
Atomic Physicist for Ion Trapping & Integrated Photonics - 721
Quantinuum —Broomfield, CO
- $132,000 - $165,000 a year
- Full-time
- System design
- 3 years
- Master's degree
- Paid parental leave
- Paid holidays
Professional Research Assistant
University of Colorado Boulder —Boulder, CO
- $40,000 - $55,000 a year
- Part-time
- University
- Military encouraged
- Entry level
- Health insurance
- Dental insurance
6d
Postdoctoral Researcher – Ultra-wide Bandgap Power Electronic Device Fabrication
National Laboratory of the Rockies —Golden, CO
- $76,600 - $126,400 a year
- Full-time
- Pass drug screening
- 3 years
- Doctor of Philosophy
- 403(b) matching
- AD&D insurance
Research Associate
University of Colorado Boulder —Boulder, CO
- $55,000 - $65,000 a year
- Full-time
- Mid-level
- University
- Doctor of Philosophy
- Health insurance
- Dental insurance

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Senior Pulsed Power Physicist

Xcimer Energy
Denver, CO

Quick Apply

Job Details

Full-time
$170,000 - $200,000 a year

Benefits

Paid parental leave
Paid holidays
Disability insurance
Health insurance
Dental insurance
Paid time off
Parental leave
Vision insurance
401(k) matching
Life insurance
Paid sick time

Qualifications

Vendor relationship building
Laboratory experiment design
Experimental data reports
Laboratory instruments
Mechanical system commissioning projects
Physics research
High-voltage electrical systems
Laboratory reports
Pumping systems
Experimental design
Research data analysis
Oscilloscopes
Commissioning phase involvement
Scientific reports

Full 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!

This is a full-time, onsite role based at our headquarters in Denver, CO.

As a Senior Pulsed Power Physicist, you will work on the science and engineering of electron-beam cathode systems for Xcimer's pulsed power driven inertial fusion energy program. The core goal is maximizing beam efficiency and energy deposition on target. You will lead cathode development across multiple emitter technologies , design and optimize hibachi foil/anode structures for beam transport, and build complex experimental systems from concept through commissioning. This role carries significant independent scientific responsibility. We want someone who is strong in both theory and experiment and rigorous about documentation.

Responsibilities

Optimize beam efficiency and energy deposition on target
Lead design, fabrication, and testing of cathode systems across multiple emitter technologies (explosive emission, thermionic, photocathodes)
Design and optimize hibachi foil/anode grid structures for beam transport efficiency
Lead experimental campaigns end-to-end
Develop and validate cathode and beam transport models (analytical, PIC, SPICE) to guide design decisions; roughly equal balance of modeling and experimental work
Operate and maintain UHV vacuum systems (target < 10^-9 Torr) including bakeout, leak checking, and pumping systems
Survey prior art on emitter technologies, beam transport, and cathode physics
Own experimental program documentation: test reports, design records, operating procedures, and data management
Manage hardware procurement, BOM tracking, and vendor relationships for cathode subsystems
Interface with potential commercial emitter suppliers on procurement, packaging, and quality
Support integration of cathode systems into larger diode and laser architectures

Qualifications

Education: PhD in physics, electrical engineering, or closely related field (MS with exceptional relevant experience considered)
Experience: 5+ years of industry experience
Deep expertise in beam diagnostics (Faraday cups, beam imaging, energy analysis, calorimetry)
Hands-on experience with vacuum electronics and electron-beam generation
Able to independently design experiments, interpret results, and write up findings clearly
Experience building and commissioning complex experimental systems end-to-end (mechanical, electrical, vacuum, controls)
Familiarity with high-voltage pulsed power systems (100 kV+)
Proficiency with lab instrumentation (SMUs, oscilloscopes, HV power supplies)
Comfortable working across mechanical, electrical, and physics domains in a small team
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.

Desired

Direct experience with explosive emission, or cold cathode technologies
Familiarity with semiconductor fabrication processes
Experience with PIC or beam optics simulation codes (e.g., Chicago, CST, COMSOL)
Background in beam transport optimization
Track record of thorough technical documentation and hardware program management (procurement, scheduling, vendor coordination)
Background in excimer laser or inertial fusion energy systems

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.

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

Benefits

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.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

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Refine Your Search

physicist jobs in colorado

Senior Pulsed Power Physicist

Plasma Computational Scientist

Medical Physicist

Radiation Health Physicist - Environmental Remediation

Computational and Modeling Physicist

Senior Physicist

Lead Experimental Physicist

Lead Physicist – Apollo Integration and Verification - 790

Sr. Scientist

Laser Plasma Interaction Computational Physicist

Simulation Physicist - Ion Transport and Waveform Design

Medical Physicist

Quantum Physicist

Atomic Source Physicist - 869

Ion Transport Physicist - 893

Laser Physicist

Atomic Physicist for Ion Trapping & Integrated Photonics - 721

Professional Research Assistant

Postdoctoral Researcher – Ultra-wide Bandgap Power Electronic Device Fabrication

Research Associate

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