Mechanical Engineer - Pulsed Power

U.S. Fusion Energy; Energy (IL); On-site; USD 106,000 - 182,000; Full time

Benefits offered by this job

401(k) with company match

Equity

Paid parental leave

Medical coverage

Job summary

Xcimer Energy in Denver, CO is seeking a Mechanical Engineer - Pulsed Power to lead design, integration, and operation of high voltage pulsed power systems for lasers used in IFE power generation, from prototype to demonstration.

You will ensure hardware meets performance, collaborate across mechanical, laser, controls, pulsed power and optical teams, and contribute to scaling designs for reactors.

Qualifications

• B.S. in Mechanical, Nuclear, Aerospace or related field.
• 3+ years in mechanical engineering with high voltage pulsed power design.
• Proficiency with 3D CAD (NX preferred) and FEA.
• U.S. citizenship or permanent resident or valid immigration status as required.

Responsibilities

• Design equipment using NX CAD and document interfaces.
• Develop and specify pulsed power generator components to meet requirements.
• Work with vendors for custom and off-the-shelf devices and instruments.
• Lead design efforts for prototype systems and subsystems.
• Collaborate with mechanical, laser, controls, pulsed power, and optical engineers.
• Oversee assembly, testing, and failure analysis of pulsed power systems and laser equipment.

Skills

High voltage pulsed power design

Problem-solving skills

Hands-on troubleshooting

Interdisciplinary collaboration

Education

B.S. in Mechanical, Nuclear, Aerospace Engineering, or related field

Tools

NX CAD

FEA analysis

PCB design

Job description

Job Title

Mechanical Engineer - Pulsed Power

Location

Denver, CO (On‑site)

Contract Type

Full‑time

Department

Engineering – Design Integration

Job Summary

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

As a Mechanical Engineer - Pulsed Power, you will lead the design, integration, and operation of high voltage pulsed power systems for lasers used in IFE power generation. Your work will begin with prototype systems and continue through the design and demonstration of power‑producing IFE reactors. You will ensure that pulsed power hardware meets performance requirements throughout the product development lifecycle in a dynamic R&D environment.

We are looking for our engineers to apply their technical expertise, problem solving skills, and dedication to quality to positively impact the future of energy!

Open to Level

Open to level 2-4 depending on qualifications.

Responsibilities

• Design equipment using NX CAD
• Experience designing simple PCBs or flex circuits.
• Develop and specify pulsed power generator components to meet pulsed power requirements.
• Design equipment using NX CAD
• Work with vendors for custom and OTS devices and instruments
• Ensure functional integration of Marx and generator architecture and subsystems through analysis, documentation, and machine testing.
• Mechanical design and documentation of generator parts, assemblies, lifting structures, oil plumbing and pumping, and structural supports using NX.
• Anaylizing designs with FEA to map external influences on components and assemblies.
• Creating and maintaining interface control documents.
• Lead design efforts for prototype systems and subsystems, including Preliminary and Final Designs.
• Troubleshoot escalations and derive practical recommendations for improvements.
• Collaborate with mechanical, laser, controls, pulsed power, and optical engineering teams throughout the design and development process.
• Support procurement of hardware for laser amplifiers and support equipment.
• Oversee and assist with assembly, shakedown, testing, and failure analysis of pulsed powersystems, laser amplifiers, and ancillary equipment.
• Provide operational support for pulsed power systems and equipment.
• Contribute to scaling designs for power‑producing IFE reactors and participate in concept studies for IFE applications and beyond.

Qualifications

• Education: B.S. in Mechanical, Nuclear, Aerospace Engineering, or related field.
• Experience: 3+ years in mechanical engineering, with a focus on high voltage pulsed powerdesign for complex hardware (preferred industries include semiconductor, solar, nuclear, fusion energy, lasers, aerospace, or defense).
• Proficiency with 3D CAD software (NX preferred).
• Working knowledge of Finite Element Analysis (FEA).
• Experience designing simple PCBs or flex circuits.
• Experience with complex integrated system design (e.g., pulsed power, lasers, high voltagesystems, fusion energy, aerospace, or defense).
• Strong problem‑solving skills and a hands‑on approach to troubleshooting and testing.
• Interdisciplinary engineering experience is a plus.
• 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.

Desired Skills

• Start‑up experience preferred
• Electro‑Static FEA analysis

Salary

$106,000 - $182,000 a year

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

• Medical coverage
• Dental coverage
• Vision coverage
• Basic life insurance
• Supplemental life insurance
• Short‑ and long‑term disability
• Paid parental leave for employees at the time of birth or adoption
• 401(k) with a company match of up to 6%
• Equity allowing employees to share in the company’s long‑term success
• Flexible Paid Time Off (ATO) approach
• Paid sick time
• 13 company‑paid holidays
• Annual paid company shutdown

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.