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HomeCompaniesXcimerDirector of Nuclear Engineering

Director of Nuclear Engineering

Xcimer · Denver, CO · On Site · Active · $190,000–$220,000 / year · Lever

Job facts

FieldValue
CompanyXcimer
TitleDirector of Nuclear Engineering
Normalized title-
Department / teamEngineering / Nuclear Engineering
LocationDenver, CO, United States
Work modelOn Site
Employment typeFull Time
Salary$190,000–$220,000 / year
Statusactive
ATS providerLever
Posted / first seen2026-05-28 / 2026-05-29
Changed / last seen2026-05-29 / 2026-06-06

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ATS provider jobsActive postings observed through Lever.Open
Provider filtered searchThe same provider as a filtered job collection.Open
City jobsActive postings in Denver.Open
Department jobsActive postings in Engineering.Open
Work model jobsActive On Site postings.Open
Lifecycle eventsOpen, update, close, and reopen events for this posting.Open
Original postingCanonical source or apply URL captured from the ATS.Open

Linked records

CompanyXcimer
Source34ba15eb-dcf2-4de1-ba3f-96f8793ede64
ATS providerLever

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! As the Director of Nuclear Engineering , you will lead and grow Xcimer’s Nuclear Engineering discipline, ensuring the company applies rigorous nuclear engineering practices across all programs, facilities, and lifecycle phases. You will serve as a technical authority within Xcimer’s matrix engineering organization, partnering closely with Program leadership and peer Department Heads to establish standards, mentor engineers, and ensure high-quality technical execution. We are looking for a technical leader to apply their expertise in nuclear engineering, systems thinking, and organizational leadership to positively impact the future of energy! 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. Responsibilities Build, lead, and grow the Nuclear Engineering Department, including hiring, onboarding, mentoring, and performance development of engineering staff. Develop career paths and technical leadership pipelines for nuclear engineers while fostering a culture of technical rigor, collaboration, safety, and continuous improvement. Establish, document, and maintain nuclear engineering standards, methods, and best practices across concept development, design, testing, and operations. Define and maintain the nuclear design basis for Xcimer facilities and programs, ensuring assumptions, analyses, and requirements support performance, safety, and regulatory objectives. Partner with Program Directors and Managers to ensure nuclear engineering activities are appropriately scoped, resourced, prioritized, and scheduled. Identify nuclear engineering risks early and collaborate cross-functionally to develop and implement mitigation strategies. Ensure disciplined execution of core nuclear engineering activities, including radiation transport and shielding analysis, activation analysis, source term definition, uncertainty analysis, and support for radiological safety and hazards analysis. Collaborate closely with Systems Engineering, Facilities, Test, Operations, ES&H, and peer engineering departments to integrate nuclear engineering considerations into system architectures, facility designs, and operational procedures. Define and execute a long-term roadmap for nuclear engineering capability growth, including external partnerships with national laboratories, academic institutions, and industry collaborators. Represent Xcimer in technical forums and within the broader nuclear engineering community to build technical credibility and attract top-tier talent. Qualifications Education: Advanced degree in Nuclear Engineering or closely related technical field; PhD strongly preferred. Experience: 15+ years of experience in nuclear engineering, including senior technical leadership responsibilities. Demonstrated experience building, mentoring, and leading high-performing technical teams. Strong foundation in radiation physics, nuclear engineering fundamentals, and analytical methods. Experience with deterministic and Monte Carlo neutron/photon transport methods. Experience using nuclear engineering analysis tools such as MCNP, OpenMC, or equivalent software. Experience planning and managing technical work, including schedules, budgets, and performance metrics. Experience operating effectively within matrix organizations and multidisciplinary technical environments. Excellent written and verbal communication skills with the ability to communicate complex technical concepts to both technical and non-technical audiences. 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 Experience within fusion energy, high-radiation facilities, or other advanced energy systems. Experience collaborating with national laboratories, universities, or large multi-institution technical programs. Experience establishing engineering standards and improving technical rigor across organizations. Publication record or recognized technical leadership within the nuclear engineering community.

Full job record

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Org ID92a4410e-e89a-46fd-b77b-9d85b9bbfdaf
Source ID34ba15eb-dcf2-4de1-ba3f-96f8793ede64
Board ID34ba15eb-dcf2-4de1-ba3f-96f8793ede64
Providerlever
Provider Job Key9d39af93-dec5-4558-9c1a-cfdfb22a1b7a
TitleDirector of Nuclear Engineering
Normalized Title
Statusactive
Activeyes
Location TextDenver, CO
DepartmentEngineering
TeamNuclear Engineering
Employment TypeFull-Time
Workplace Typeon_site
Remote Policy
CountryUnited States
RegionCO
CityDenver
Salary RawUSD 190000-220000 per-year-salary
Salary Min190,000
Salary Max220,000
Salary CurrencyUSD
Salary Periodyear
Source URLhttps://jobs.lever.co/xcimer/9d39af93-dec5-4558-9c1a-cfdfb22a1b7a
Apply URLhttps://jobs.lever.co/xcimer/9d39af93-dec5-4558-9c1a-cfdfb22a1b7a/apply
First Seen At2026-05-29 07:08:24Z
Last Seen At2026-06-06 19:52:20Z
Last Checked At2026-06-06 19:52:20Z
Last Changed At2026-05-29 07:08:24Z
Inactive At
Source Posted At2026-05-28 01:26:23Z
Source Updated At
Raw Payload Uris3://job-postings-prod-raw-590183727216/raw/provider=lever/board=xcimer/date=2026-06-06/2026-06-06T19-52-19-180Z-31cc789cd738c8b1fb8a28e511fc7c301eff24e05df730895eaae921bbdbfe33.json
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Extensions
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Native Structured
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