Principal Software Engineer TS/SCI Polygraph LeidosPrincipal Software Engineer TS/SCI PolygraphHanover, MarylandOur talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. May 20, 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 Identity Solutions Engineer TS/SCI Polygraph LeidosPrincipal Identity Solutions Engineer TS/SCI PolygraphHanover, MarylandJob Summary: The Secure Token Service (STS) Team Lead is responsible for leading the design, implementation, and sustainment of enterprise Identity, Credential, and Access Management (ICAM) solutions focused on Secure Token Services (STS) and Single Sign-On (SSO) capabilities. The ideal candidate possesses deep technical expertise in federation technologies, PKI, authentication protocols, cloud environments, and enterprise security architectures while serving as the technical lead for planning, implementation, and customer engagement.
NewSenior Machine Learning Engineer I Rocket Lab CorporationSenior Machine Learning Engineer IChantilly, VA$125,300–$187,850 / yearTo conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR), Rocket Lab Employees must be a U.S. citizen, lawful U.S. permanent resident (i.e., current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum, or be eligible to obtain the required authorizations from the U.S. Department of State and/or the U.S. Department of Commerce, as applicable. As a Senior Machine Learning Engineer I based at our Optical Systems sites in Chantilly, VA, you will have the opportunity to support Tranche 3 of the U.S. Space Development Agency's (SDA) Proliferated Warfighter Space Architecture (PWSA) and beyond by building deep learning neural networks for advanced Electro-Optical (EO/IR) image processing.
Fall 2026 AI/ML Engineering Intern The Nuclear CompanyFall 2026 AI/ML Engineering InternWashingtonAs an AI/ML Engineer Intern on the Platform Integration & AI/Data squad, you take real scope on the machine learning and agent capabilities inside NOS: LLM-driven workflows, retrieval-augmented generation, and agents that operate against NOS data and tools, plus the evals and monitoring that keep AI features safe in production. The actual pay offered may vary based on relevant factors as determined in the Company’s discretion, which may include experience, qualifications, tenure, skill set, availability of qualified candidates, geographic location, certifications held, and other criteria deemed pertinent to the particular role.
Spring 2027 AI/ML Engineering Intern The Nuclear CompanySpring 2027 AI/ML Engineering InternWashingtonAs an AI/ML Engineer Intern on the Platform Integration & AI/Data squad, you take real scope on the machine learning and agent capabilities inside NOS: LLM-driven workflows, retrieval-augmented generation, and agents that operate against NOS data and tools, plus the evals and monitoring that keep AI features safe in production. The actual pay offered may vary based on relevant factors as determined in the Company’s discretion, which may include experience, qualifications, tenure, skill set, availability of qualified candidates, geographic location, certifications held, and other criteria deemed pertinent to the particular role.
Summer 2027 AI/ML Engineering Intern The Nuclear CompanySummer 2027 AI/ML Engineering InternWashingtonAs an AI/ML Engineer Intern on the Platform Integration & AI/Data squad, you take real scope on the machine learning and agent capabilities inside NOS: LLM-driven workflows, retrieval-augmented generation, and agents that operate against NOS data and tools, plus the evals and monitoring that keep AI features safe in production. The actual pay offered may vary based on relevant factors as determined in the Company’s discretion, which may include experience, qualifications, tenure, skill set, availability of qualified candidates, geographic location, certifications held, and other criteria deemed pertinent to the particular role.
Manager, Software Engineering (C++, GoLang, or Java) - 2 Days Onsite - Reston, VA - FreeWheel Comcast CorporationManager, Software Engineering (C++, GoLang, or Java) - 2 Days Onsite - Reston, VA - FreeWheelReston, VA$150,452.09–$225,678.13 / yearThat’s why we provide an array of options, expert guidance and always-on tools, that are personalized to meet the needs of your reality - to help support you physically, financially and emotionally through the big milestones and in your everyday life. Be an active part of the Net Promoter System a way of working that brings more employee and customer feedback into the company by joining huddles, making call backs and helping us elevate opportunities to do better for our customers.
Systems Engineer III Akima, LLCSystems Engineer IIIAlexandria, Virginia$190,000–$200,000 / yearDemonstrate minimum of 5 years of experience in implementing and maintaining patch versions and Department of Defense (DoD) Security Technical Implementation Guides (STIG) levels on all network servers and workstations. Monitor and maintain McAfee's Host-Based Security System (HBSS), ensuring virus definitions, patch versions, and Department of Defense (DoD) Security Technical Implementation Guides (STIG) compliance on all network servers and workstations.
Sr. Software Engineer Que Technology GroupSr. Software EngineerMarylandRequired Qualifications: Bachelor's Degree or higher in computer engineering or in a field related to computer engineering or computer science disciplines. Que Technology Group, Inc. , is seeking a motivated Senior Software Engineer to serve as technical anchor for a new feature/capability being added to our product.
Mid-Level OT/IT Network & Cybersecurity Engineer LeidosMid-Level OT/IT Network & Cybersecurity EngineerMcLean, VirginiaTwo closely related primary disciplines, in priority order, with testing and experiment support woven through both: OT/IT Network Engineering & Testbed Operations — design, build, operate, and secure the networks and physical testbed infrastructure underpinning the lab’s connected-vehicle and infrastructure research. Design, build, and operate the OT/IT networks underpinning the testbeds — VLAN segmentation, firewall/ACL and routing, wireless distribution, the fiber/copper cabling plant, and backhaul to field-deployed roadside units (RSUs), edge nodes, and remote sites (C-V2X PC5/Uu, 5G NR, Wi-Fi).
Vulnerability Research Engineer Integration Innovation, Inc.Vulnerability Research EngineerWashington, D.C.$115,000–$181,000 / yearFull timeAbout i3: i3 is a technically diverse, 100% team member owned business, headquartered in Huntsville, Alabama specializing in missile and aviation systems engineering and logistic services, electronic warfare and electromagnetic effects analysis, UAS system integration and flight operations, full lifecycle C5ISR engineering services, cybersecurity and IT/IA innovative solutions and virtual training, simulation & serious game development and implementation. We have established a broad offering of products and capabilities collectively providing decades of experience supporting the full complement of DoD military services, Missile Defense Agency, National Aeronautics and Space Administration, and a variety of other Government organizations and private industry customers.
Ground Systems Engineer Systems Planning and AnalysisGround Systems EngineerChantilly, Virginia$150,000–$195,000 / yearFull timeSPA provides eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work. SPA provides eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide both paid and unpaid time away from work.
Sr Acquisition Analyst MAG AerospaceSr Acquisition AnalystAnnapolis Junction, Maryland$180,000–$200,000 / yearFull timeExperience with Planning, Programming, Budgeting and Execution (PPBE) to include the development of acquisition strategies, development of budget and financial management documentation, and monitoring project performance and contract deliverables. Salary at MAG Aerospace is determined by various factors including but not limited to location, particular combination of education, knowledge, skills, competencies, and experience as well as contract-specific affordability and organizational requirements.
Secure Software Engineer (Ts/Sci Clearance Required) NorthHill TechnologySecure Software Engineer (Ts/Sci Clearance Required)Chantilly, VirginiaWorking closely with Cloud & DevOps Engineers, system engineers, data scientists, and Government stakeholders, the Secure Software Engineer will implement application services, user interfaces, APIs, automated testing capabilities, and data processing workflows while incorporating secure coding practices, vulnerability remediation, and cybersecurity engineering principles. The successful candidate will be part of a team to support the design, development, integration, testing, deployment, and sustainment of the enterprise IV&V platform while collaborating with Government stakeholders to evaluate existing GEOINT IV&V capabilities, implement automated verification processes, and deliver secure, scalable software solutions.
Sr. Software Engineer TS/SCI Polygraph HANOVER LeidosSr. Software Engineer TS/SCI Polygraph HANOVERHanover, MarylandJune 11, 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. Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management.
Senior DevOps Engineer teKnoluxionSenior DevOps EngineerSpringfield, Virginia$154,000–$185,000 / yearFull timeIn addition, the position will enhance observability, monitoring, and incident response to accelerate issue detection and recovery, while also improving system configuration management and documentation to support scalability, resilience, and long-term operational excellence. Bcore accelerates decisive advantage for warfighters and intelligence professionals by fusing human insight, rapid-fire engineering, precision-measured outcomes, and relentless grit into mission-ready solutions.
Spacecraft Operations & Systems Integration Engineer Systems Planning and AnalysisSpacecraft Operations & Systems Integration EngineerChantilly, Virginia$150,000–$195,000 / yearFull timeSPA provides eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work. SPA provides eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide both paid and unpaid time away from work.
Software Developer-mid teKnoluxionSoftware Developer-midSpringfield, Virginia$134,000–$162,000 / yearFull timeBcore accelerates decisive advantage for warfighters and intelligence professionals by fusing human insight, rapid-fire engineering, precision-measured outcomes, and relentless grit into mission-ready solutions. Works as a member of an agile scrum team and participates in regular agile ceremonies applying scrum methodologies – daily stand up, planning, sprint reviews, demos, retrospectives.
Software Engineer 2 - Team Lead (Cloud/Dev Ops) Navius TechnologiesSoftware Engineer 2 - Team Lead (Cloud/Dev Ops)Annapolis Junction, MarylandContribute to system-level design, including hardware/software tradeoffs, software reuse strategies, and effective use of COTS/GOTS components versus new development. Bachelor's degree in Computer Engineering, Computer Science, Electrical Engineering, Math, or Physics is required, or an equivalent combination of education, training, and experience.
Senior CNO Software Engineer Redhorse CorporationSenior CNO Software EngineerQuantico, VAWe’re looking for thoughtful, skilled professionals who thrive as trusted partners building technology-agnostic solutions and want to apply their talents supporting customers with difficult and important mission sets. In this role, you will be at the forefront of advanced Computer Network Operations (CNO), designing and sustaining mission-critical software that directly impacts national security.