June 4, 2026For 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. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
April 9, 2026For 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. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
li>Develop engineering designs supporting lifecycle factors including operability, maintainability, and reliability. Previous experience with commercial nuclear reactors and systems, high temperature pressure vessels, or similar systems (highly desired).
degree in Mechanical Engineering or equivalent (minimum of eight years of equipment/component design experience; relevant M.S. degree credited as two years of experience) . System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America.
li>Support continuous learning and application of nuclear industry best practices to maintain the highest quality of engineering design and proactively identify process change/enhancement opportunities. The Component Design Engineer (RPA) will work as part of a high functioning team of engineers and scientists focused on developing the design of next generation advanced nuclear reactors.
p>The selected candidate will work closely with engineering teams, design partners, suppliers, and project stakeholders to develop, manage, verify, and maintain requirements while supporting the integration of systems, structures, components, testing, construction, and operations activities. The successful candidate will possess strong analytical and leadership skills, thrive in collaborative engineering environments, and demonstrate a commitment to continuous improvement, technical excellence, and successful project execution.
li>Provide technical direction and interface to supplier projects, working with supply chain teams to ensure delivery of engineering designs and other deliverables, as well as coordination and performance of technical reviews of deliverables. Interface with and support licensing activities needed to obtain both the construction and operating licenses for the reactor systems including development of safety analysis reports, technical specifications, topical reports, and other licensing documents.
The Supplier Project Engineer will provide oversight of supplier activities throughout the project lifecycle, ensuring contract requirements, technical expectations, schedules, and deliverables are successfully achieved. • Demonstrated experience supporting supplier relationships in engineering, manufacturing, or highly regulated industries.
li>Perform thermal modeling of fluid-structure interfaces, including metallic structure thermal problems with structure conductive heat transfer, air convective heat transfer, radiation, and sodium-structure heat transfer modes. Work with our client’s component design leads and analysis engineers to evaluate specific component issues, develop local models or modify existing, and provide insights and feedback to design teams for action.
System One is seeking a Senior Welding Engineer for a yearlong contract role to work as part of a high-functioning team of engineers focused on materials processing, supply chain development and supplier qualification for next generation material and components for sodium-cooled fast reactors. Oversee test programs for qualification of welds, including mechanical properties, burst testing, thermal creep, creep-fatigue, neutron irradiation, thermal aging, and sodium exposure .
p>System One is seeking a highly motivated Weld Engineer to support a Materials Development & Qualification team advancing next-generation materials and components for sodium-cooled fast reactors. This is a hands-on, high-impact role where your weld engineering and metallurgy expertise will influence how advanced components are designed, tested, qualified, and transitioned into supplier-ready manufacturing processes.
ul>Perform detailed design, analysis, and documentation for ASME Section III Class HB and/or Section VIII division 2 vessels, including nozzles, flanges, support brackets, and other support elements used in nuclear facilities. Minimum of six years of equipment / component design experience for level 10 or minimum of ten years of equipment / component design experience for level 11; relevant M.S. degree credited as two years of experience.
p>The selected candidate will collaborate with project managers, design engineers, analysts, test engineers, and multidisciplinary engineering teams to support the successful design, integration, and deployment of this first-of-a-kind reactor technology. This role will support the ongoing development of a passive reactor cooling system designed to continuously remove heat through natural convection, providing safe and reliable cooling without reliance on pumps or operator actions.
The ideal candidate will have strong experience in building AI-native tooling, agentic workflows, developer surfaces, and validation infrastructure and a proven ability to design, ship, and iterate production-grade systems that replace manual processes and accelerate delivery. With delivery centers and offices across North America and India, we take pride in building long-term relationships and delivering excellence through innovation, collaboration, and integrity.
The ideal candidate will have strong experience in embedded firmware development using C/C++, RTOS, and multi-threaded applications and a proven ability to deliver optimized, reliable firmware for graphics and display pipelines, debug across the software stack, and sustain CI-driven quality. With delivery centers and offices across North America and India, we take pride in building long-term relationships and delivering excellence through innovation, collaboration, and integrity.
The ideal candidate will have strong experience in building scalable data pipelines, crafting robust data models, and delivering data products for analytics and marketing and a proven ability to translate complex data into actionable insights that drive business impact. Bachelor's in Computer Science, Software Engineering, Computer Engineering, or related field and 4+ years in analytics engineering, data engineering, data science, data analysis, or related software development; or Master's and 3+ years; or equivalent experience.
Master's degree or equivalent experience in Optics, Optical Sciences, Optical Engineering, Physics, Mechanical Engineering, Electrical Engineering, Computer Sciences, or a similar field. The ideal candidate will have strong experience in optical testing, calibration, data analysis, and test automation and a proven ability to develop and execute test procedures, analyze results, and drive hardware quality.
The ideal candidate will have strong experience in gameplay development, mods/add-ons, and scripting with TypeScript or similar and a proven ability to design and deliver example content and code samples that demonstrate new game features. 2.Scripting ability, specifically TypeScript - Candidates should be deeply comfortable working with behavior packs, resource packs, JSON entity/item/block definitions, and the Script API (JavaScript/TypeScript).
p>They are recognized for their collaborative culture, technical excellence, and commitment to delivering impactful projects for public and private sector clients.he ideal candidate will bring expertise managing complex transit and public works projects while leading multidisciplinary teams and supporting business development initiatives. Our client, a respected multidisciplinary engineering and infrastructure consulting firm, is seeking a Senior Civil Engineer / Senior Project Manager to support and lead transportation and transit projects throughout the Pacific Northwest.
The ideal candidate will have strong experience in Android-based device operations, live service monitoring, telemetry analysis, and release validation and a proven ability to triage live issues, improve reliability, and support on-site prototype device workflows. With delivery centers and offices across North America and India, we take pride in building long-term relationships and delivering excellence through innovation, collaboration, and integrity.
The ideal candidate will have strong experience in designing and implementing automated test suites, CI/CD integration, and defect analysis and a proven ability to improve test coverage, ensure software quality, and support release readiness for prototype devices and builds. With delivery centers and offices across North America and India, we take pride in building long-term relationships and delivering excellence through innovation, collaboration, and integrity.
The ideal candidate will have strong experience in manual and automated application security testing, web technologies, and IAM and a proven ability to identify and communicate vulnerabilities early in the development lifecycle. With delivery centers and offices across North America and India, we take pride in building long-term relationships and delivering excellence through innovation, collaboration, and integrity.
The ideal candidate will have strong experience in prompt engineering for generative models, structured content design, and systems-driven iteration and a proven ability to design scalable prompt frameworks that deliver accurate, consistent, and engaging outputs. With delivery centers and offices across North America and India, we take pride in building long-term relationships and delivering excellence through innovation, collaboration, and integrity.
June 22, 2026For 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. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
June 22, 2026For 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. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
June 23, 2026For 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. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.