NewStationary Engineer I-Fort Detrick Constellation EnergyStationary Engineer I-Fort DetrickClarksburg, MD$38.46–$48.95Now integrated with Calpine, our portfolio includes 55 gigawatts of capacity from nuclear, natural gas, geothermal, hydro, wind and solar facilities, with the generating capacity to power the equivalent of 27 million homes. As the largest private-sector power producer in the world and the nation's largest producer of clean and reliable energy, Constellation is focused on our purpose: lighting the way to a brilliant tomorrow for all.
Nuclear Engineer U.S. Department of the InteriorNuclear EngineerWashington, DC$83,265–$129,742 / yearQualifying combination of Education and Experience: A combination of successfully completed graduate education (only successfully completed education beyond the second year (or 36 semester hours) is creditable towards meeting this requirement) and specialized experience equivalent to the GS-9 level that is related to the position and total 100% of the requirement for this grade level. If you are a veteran within 120 days of discharge, you must submit signed documentation from the Armed Forces certifying: 1) your expected release/retirement from active duty, 2) under honorable conditions, 3) your pay grade/rank/rate at time of discharge, 4) dates of active-duty service, 5) any campaign or expeditionary medals received, & 6) dated within 120 days of your separation.
NewNuclear Engineer Booz Allen Hamilton Inc.Nuclear EngineerArlington, VA$77,600–$176,000 / yearThat expertise is essential when conducting detailed engineering analyses for the Department of War-evaluating site viability, guiding customers through licensing and permitting pathways, and supporting multiple sites throughout the nuclear lifecycle from construction through decommissioning. We need a nuclear engineer who specializes in reactor systems, electrical integration, site viability, and regulatory pathways and who can communicate complex technical insights across interdisciplinary teams to shape the next generation of large‑scale energy capabilities.
Senior Nuclear Engineer Leidos Holdings IncSenior Nuclear EngineerReston, VA$131,300–$237,350 / yearExperience developing and executing physics-based simulations using tools such as MCNP, SCALE, ORIGEN, COMSOL, and related modeling software, supplemented by data analysis tools such as Python, MATLAB, or C++. Responsibilities include conducting technical assessments of foreign nuclear weapons infrastructure to reverse-engineer protective hardening measures and identify facility, process, and supply chain vulnerabilities.
Nuclear Engineer - Mid and Sr Nalley ConsultingNuclear Engineer - Mid and SrReston, VARequired experience: 3+ years of experience supporting nuclear engineering research Required education: Bachelor’s degree in physics, engineering, engineering technologies, or a physical science field. Nalley Consulting is a Service Disabled Veteran Owned Small Business working with prime partners to staff Department of Defense and Intelligence Community positions.
Nuclear Engineer IV X Energy LLCNuclear Engineer IVRockville, MD$158,000–$183,000 / yearA masters degree in engineering or related field (may include a combination of experience obtained through an academic institution, e.g., design projects, research, or design teams, as well as professional experience) may be in lieu of two years of experience. D. in engineering or related field (may include a combination of experience obtained through an academic institution, e.g., design projects, research, or design teams, as well as professional experience) may be in lieu of three years of experience.
Nuclear Engineer, IV X Energy LLCNuclear Engineer, IVRockville, MD$155,000–$185,000 / yearA master's degree in engineering or related field (may include a combination of experience obtained through an academic institution, e.g., design projects, research, or design teams, as well as professional experience) may be in lieu of two years of experience. D. in engineering or related field (may include a combination of experience obtained through an academic institution, e.g., design projects, research, or design teams, as well as professional experience) may be in lieu of three years of experience.
Principal/Lead Nuclear Engineer Mpr Associates, Inc.Principal/Lead Nuclear EngineerAlexandria, VirginiaOversee MPR engineers performing neutronics simulations and core design: criticality safety evaluations, critical core configurations, fuel cycle management, activation calculations, radiation detection and shielding analyses: alarm setpoint determination, shielding optimization, ALARA implementation, dosimetry calculations. The role requires deep expertise in or an ability to quickly master several nuclear engineering related topics, including neutronics, thermal hydraulics, shielding, fuel and nuclear materials, and radiological consequence evaluation combined with strong communication skills, adherence to best practices, and an eye for growing MPR's portfolio.
NewSenior Nuclear Engineer LeidosSenior Nuclear EngineerReston, Virginia$131,300–$237,350 / yearExperience developing and executing physics-based simulations using tools such as MCNP, SCALE, ORIGEN, COMSOL, and related modeling software, supplemented by data analysis tools such as Python, MATLAB, or C++. June 10, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Principal Nuclear Engineer SME Leidos Holdings IncPrincipal Nuclear Engineer SMEReston, VA$154,050–$278,475 / yearThe successful candidate will lead technical assessments of foreign nuclear weapons infrastructure, reverse engineer protective hardening measures, and identify vulnerabilities across facilities, processes, and supply chains. Leidos' Analysis Solutions business area is seeking a highly accomplished Principal Nuclear Engineer Subject Matter Expert (SME) to support critical national security missions in Reston, Virginia.
Principal Nuclear Engineer SME LeidosPrincipal Nuclear Engineer SMEReston, VirginiaThe successful candidate will lead technical assessments of foreign nuclear weapons infrastructure, reverse engineer protective hardening measures, and identify vulnerabilities across facilities, processes, and supply chains. Leidos' Analysis Solutions business area is seeking a highly accomplished Principal Nuclear Engineer Subject Matter Expert (SME) to support critical national security missions in Reston, Virginia.
Electrical Engineer - Nuclear Power Black & Veatch Holding CoElectrical Engineer - Nuclear PowerGaithersburg, MD$103,987–$219,360 / yearComplex engineering calculations such as: load flow, short circuit, motor starting (ETAP or SKM), Arc flash analysis (ETAP or SKM), protective relay settings, battery and charger sizing. Extensively use Microsoft Office business systems such as ProjectWise, electrical engineering software, such as ETAP and Computer Aided Drafting Tools, such as AutoCAD to view and manipulate engineering drawing files.
Senior Electrical Engineer - Nuclear Power Black & Veatch Holding CoSenior Electrical Engineer - Nuclear PowerGaithersburg, MD$128,554–$271,176 / yearTypical roles include being recognized as an industry expert, participating in professional societies by presenting papers, acting as a section lead for a large or complex specialty area, an engineering consultant for larger scale projects. Extensively use Microsoft Office business systems such as ProjectWise, electrical engineering software, such as ETAP and Computer Aided Drafting Tools, such as AutoCAD to view and manipulate engineering drawing files.
Nuclear Licensing Engineer TerraPowerNuclear Licensing EngineerRockville, MD$138,685–$208,027 / yearSupport for engagements with the US Nuclear Regulatory Commission (NRC) includes pre-application meetings, preparing and reviewing permit and license applications, preparing and reviewing topical reports, and responding to NRC audit questions and requests for additional information. TerraPower is seeking to hire highly motivated and forward-thinking professionals who are interested in focusing on advanced nuclear reactor research and development and influencing change within the nuclear power landscape and bringing forward the critical production of medical isotopes.
Nuclear Surety Engineer Rite-Solutions IncNuclear Surety EngineerWashington, DCThere are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. Review strategic weapon system certification processes and activities to ensure objective quality evidence and artifacts required for safety, security, control, and reliability certifications are identified, defined, understood, and accessible to sponsors.
Nuclear Surety Engineer ArcfieldNuclear Surety EngineerWashington, D.C.Full timeThere are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. Our solution areas include space mission engineering, atmospheric science, digital engineering, mission assurance, and advances in modeling and simulation that together with our enterprise-wide adoption of artificial intelligence and machine learning, lead to better systems and timely, reliable decision-making.
Remote Sensing & Nuclear Activity Detection Engineer Salas O'Brien Engineers IncRemote Sensing & Nuclear Activity Detection EngineerWashington, DCRemoteYou will conduct technical analysis, perform program and conference reviews, and advise on detecting nuclear-related activities from stand‑off ranges greater than 100 meters from a facility, including airborne, orbital, deep‑space, and planetary-based sensing platforms, using your technical expertise in nuclear signatures-radiological, spectral, thermal, seismic, neutron, gamma, and other modalities-and the integration of remote systems capable of identifying, characterizing, and assessing nuclear-related operations. Who We Are: TechSource, a Salas OBrien company and a previous DOE Small Business of the Year recipient and ten-time Inc. 5000 winner, is a nationally recognized engineering and scientific company specializing in the management and technical delivery of large-scale nuclear and high-technology projects with numerous federal agencies, helping to advance missions of national importance for government programs, national laboratories, national security facilities, nuclear operations, and complex projects nationwide.
Remote Sensing & Nuclear Activity Detection Engineer Salas O'BrienRemote Sensing & Nuclear Activity Detection EngineerWashington, District of ColumbiaRemoteYou will conduct technical analysis, perform program and conference reviews, and advise on detecting nuclear-related activities from standâoff ranges greater than 100 meters from a facility, including airborne, orbital, deepâspace, and planetary-based sensing platforms, using your technical expertise in nuclear signatures—radiological, spectral, thermal, seismic, neutron, gamma, and other modalities—and the integration of remote systems capable of identifying, characterizing, and assessing nuclear-related operations. TechSource, a Salas O'Brien company and a previous DOE Small Business of the Year recipient and ten-time Inc. 5000 winner, is a nationally recognized engineering and scientific company specializing in the management and technical delivery of large-scale nuclear and high-technology projects with numerous federal agencies, helping to advance missions of national importance for government programs, national laboratories, national security facilities, nuclear operations, and complex projects nationwide.
Nuclear Licensing Engineer TerraPower LLCNuclear Licensing EngineerRockville, MD$138,685–$208,027 / yearSupport for engagements with the US Nuclear Regulatory Commission (NRC) includes pre-application meetings, preparing and reviewing permit and license applications, preparing and reviewing topical reports, and responding to NRC audit questions and requests for additional information. TerraPower is seeking to hire highly motivated and forward-thinking professionals who are interested in focusing on advanced nuclear reactor research and development and influencing change within the nuclear power landscape and bringing forward the critical production of medical isotopes.
Principal Materials Engineer (Metallics) - Advanced Nuclear Technology X Energy LLCPrincipal Materials Engineer (Metallics) - Advanced Nuclear TechnologyRockville, MD$121,868–$203,113 / yearPerform and assist metallurgical analysis for the alloys selected for metallic systems, structures, and components of X-energy developed reactors, including pressure vessels and piping, reactor internals, heat exchangers, and other systems and components. Job Responsibilities: Develop and implement methodologies to qualify and characterize materials, especially metallic alloys, graphite, composites, and welding materials for nuclear reactor applications including in high temperature environments.