Software Engineer
Leidos
Software Engineer (R&D / AI & Data Platforms)Leidos – Analysis Solutions Business AreaBuild the future of data, AI, and mission-critical software.Leidos is seeking a talented Software Engineer to help lead the development of next-generation software capabilities within our dynamic research and development environment. In this role, you'll design and deliver innovative Knowledge Management solutions that power data-driven decision-making across critical national security missions.You'll work at the intersection of data engineering, AI, and full-stack development, building scalable platforms that transform complex data into actionable insights.What You'll DoDesign and develop Knowledge Management systems, including data pipelines, ontologies, and AI-enabled platformsBuild modern web applications (front-end and back-end) to support search, discovery, and analysisDevelop and maintain ETL pipelines and data lake architecturesIntegrate AI/ML capabilities, including Generative AI and LLM APIsCollaborate across teams to gather requirements and deliver scalable, mission-focused solutionsSupport data analysis, modeling, simulation, and visualization effortsEnsure software quality through testing, validation, and performance optimizationDeploy solutions in secure, cloud-based, and containerized environmentsWhat You BringExperience in software development and system design, with a strong foundation in computer science principlesProficiency in one or more programming languages such as Python, Java, C++, R, or JavaScript/TypeScriptExperience building applications using React or Angular, and back-end frameworks such as FastAPIFamiliarity with SQL and NoSQL databasesWorking knowledge of cloud platforms (preferably AWS) and containerization technologies (e.g., Docker)Experience with data pipelines, ETL processes, and data management systemsExposure to Generative AI / LLM APIs (e.g., OpenAI, Anthropic, Bedrock)Understanding of software testing frameworks (e.g., pytest, Playwright, Jest)Ability to work in Linux/Unix and Windows environmentsStrong communication skills and experience collaborating with technical and non-technical stakeholdersBasic QualificationsTS/SCI w/PolygraphBachelor's degree in computer science, Information Systems, Systems Engineering, or a related fieldMinimum of 1+ years of relevant experienceInterest in supporting Intelligence Community and DoD missionsU.S. Citizenship requiredPreferred QualificationsAdvanced degree (MS) in a relevant technical fieldExperience with AI/ML, LLMs, and AWS BedrockFamiliarity with DTRA R&D or Combatant Command environmentsExperience integrating COTS/GOTS tools, including 3D modeling, simulation, or visualization platformsWhat Sets You ApartDetail-oriented with strong problem-solving skillsComfortable working in fast-paced, ambiguous environmentsAble to independently research and implement innovative solutionsEffective collaborator who thrives both independently and on teamsStrong technical writing and presentation skillsWhy Leidos?At Leidos, your work directly supports critical national security missions. You'll join a collaborative, forward-thinking team where innovation is encouraged and your contributions make a real impact.If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.
- ...below.This position requires an active U.S. Government Security Clearance at the TS/SCI level. We’re hiring a solution driven Software Engineer to work onsite with U.S. Government customers to create technology solutions for data collection, data analytics, data visualization...SuggestedPermanent employmentFull timeRemote workFlexible hours
- ...person status as defined by 8 U.S.C. 1324b(a)(3).Please review the job details below.Vantor is seeking multiple Full Stack Software Development Engineers of varying experience and seniority. You will work on an integrated team to build innovative software using...SuggestedFull time
$130k - $145k
NVR, Inc. is seeking an experienced Full Stack Senior Software Engineer to work on site in Reston, VA.NVR’s technology teams thrive on providing multiple business lines with the tools and cutting-edge technologies that support NVR’s mission to create a better living experience...Suggested- ...excited to join that effort. To learn more about our exciting organization, please visit us at We are seeking a Full Stack Software Engineer to join our team and support our Department of War (DoW) customer. The ideal candidate is a versatile software engineer who...SuggestedWork experience placementWork at officeFlexible hours
- ...Title: Full Stack Software Engineer Location: Remote Pay range: $75/hr. - $80/hr. on w2 JOB DESCRIPTION: Profile : Must have strong TypeScript and JavaScript (ES6) along with React development expertise. This role is for a full-stack engineer with solid...SuggestedRemote work
- ...Responsibilities Work in an agile product team and across cross-functional teams to design, develop, test, and support complex software systems using Microsoft .NET Core and open source full-stack technologies. Work with product owners and stakeholders to...
$135k - $216k
...Full Stack Software Engineer Job Locations US Requisition ID 2026-168354 Position Category Information Technology Clearance Secret Responsibilities Peraton is delivering advanced mission planning, digital engineering...Contract workShift work- ...Responsibilities: Proven experience as a Full Stack Engineer, with a strong focus on or React and Node.js, Spring boot and a... ...GitHub, Jenkins, Unix bash scripting ~ Expert knowledge of the software development lifecycle ~ In-depth experience with common...Work experience placement
- ...EngineeriDirectGov's hubs, satellite routers and network management software address the growing complexity of deploying and managing... ...skills to work with our team of smart, creative, and dedicated engineering team-members. This position is based out of our Herndon, VA...Work experience placementRemote work
$123k - $161k
...Senior Full Stack Software Engineer Playing an essential role in the U.S. economy, Fannie Mae is foundational to housing finance. Here, your expertise can help fuel purpose-driven innovation that expands access to homeownership and affordable rental housing across the...$60 per hour
...Senior Full Stack Software EngineerLocation: Reston, VA. But resources will work from home till the time COVID situation stabilizesMaximum Rate: $60/hrJob Description:• Java, Spring, Spring boot, API, Micro Services, Tomcat, Oracle, Java Script, Angular stack and AWS...Work from home- ...integrate bespoke capabilities and tools to solve our customers most complex challenges. We’re seeking an experienced full stack software engineer to support work across the full analytical workflow. Technical tasks include ELT, managing, analyzing, and enrichment of large...Full timeFlexible hours
$80k - $128k
ResponsibilitiesJoin a cross-functional Scrum team building mission-focused software in an Agile DevSecOps environment in our Herndon, VA location. As a junior engineer, you’ll contribute to full‑stack features, participate in acceptance criteria development, automate...Contract workShift work$98.61k - $167.64k
ICF’s Technology and Products team is seeking a On-call Software Engineer, Cloud Data Platform to help build, enhance, and support a cloud-hosted relational database platform for acoustic-telemetry fish-tracking research in California’s Sacramento-San Joaquin Delta.This...Full timeContract workPart timeWork experience placementSeasonal workWork at officeRemote work$120.21k - $180.32k
...SummaryThis job involves collaborative design and development of software solutions that meet business objectives. It includes system... ...assisting with software updates. It also involves mentoring junior engineers, ensuring quality with Quality Assurance, and providing...Full timeNight shiftWeekend work$140k - $185k
...Summary/Company : A growing technology company supporting defense and intelligence missions is seeking multiple Full Stack Software Engineers. This role will develop modern, containerized applications using Java/Spring Boot, C++, JavaScript frameworks, and SQL in a highly...- ...Job Description Job Description We are looking for a passionate Software Engineer to design, develop and improve our core data platform and the products we build on it. We primarily use Microsoft technology stack. Our ideal candidates are familiar with the software...Work experience placement
$150k - $275k
...Job Description Job Description Job Description Full-Stack Software Engineer Dulles, VA | Full Time | TS/SCI with Polygraph Required Position: Full-Stack Software Engineer (Software Engineer, Level 3) Location: Dulles, VA (on-site) Category: Software Engineering...Full timeFor contractorsLocal area$293.9k - $406.8k
...products to comprehensive security outcomes, as a Distinguished Engineer. The team delivers secure, scalable capabilities enabling... ...scalability!Your ImpactInnovate, develop, and drive industry-leading software, hardware, and technology solutions with global impact across...Full timeTemporary workLocal areaRemote workFlexible hours$166k - $220k
...AI, computer vision, sensor fusion, and networking technology to the military in months, not years.ABOUT THE JOBAs a Mission Software Engineer, you will solve a wide variety of problems involving networking, autonomy, systems integration, robotics, and more, while making...Full timeWork experience placementImmediate start$80k - $128k
ResponsibilitiesPeraton is seeking a Software Engineer II in our Herndon, VA location to support a large software development classified program developing, operating, and maintaining mission critical enterprise capabilities. Program includes development and support for...Full timeContract workInternshipShift work$135k - $175k
...Salary Salary: 135000-175000/US Dollars Occupational Categories: Information Technology/ Computing/ Cyber/ Software Industry(ies): Aerospace / Defense Software Engineer Simulation, Optimization & Decision SupportJoin a team building mission-critical software that turns...Remote workVisa sponsorshipFree visa- .... As a recognized leader in providing Information Technology, Engineering Services, Program Management, and Consulting Services to the U... ...achieve their most critical objectives.Solerity is seeking a Software Engineer to support a mission-focused organization responsible...For contractorsRemote workFlexible hours
$85.4k - $168.1k
...siteRole type: Individual ContributorTravel: Less than 25%Profession: Software EngineeringDiscipline: Software EngineeringCompany:... ...Cloud Identity team is looking for an early in career Software Engineer to join the Authentication team. This individual will be responsible...Ongoing contractLocal area- ...intersection of advanced mathematics, computer science, physics, and engineering. Our people are leaders in their technical fields and are... ...a mid-level Rust Developer to build and optimize production software supporting simulation, optimization, and decision support in mission...For contractorsInterim roleWork at officeRelocation
$104k - $166k
ResponsibilitiesPeraton is seeking a Test Engineer. This position is located in Herndon, VA.The position will perform the following duties... ..., testing and utilization of electronic data processing software.Designs, develops, documents, tests and debugs applications software...Contract workShift work$135.7k - $251.9k
...Experienced ProfessionalFT/PT/Casual: FullTimeDepartment: SpaceBusiness Unit: SpaceStandard Job DescriptionPlans, conducts, and coordinates software development activities. Designs, develops, documents, tests, and debugs software that contains logical and mathematical solutions...Full timeTemporary workWork experience placementCasual workFlexible hours$89.9k - $121.7k
...benefits and the ability to grow your career.Verisign’s Resolution Engineering team is a high performing, Agile team who builds horizontally... ...new features for resolution products. You will be writing the software that fundamentally enables the internet to operate at scale....Work experience placementWork at officeFlexible hours$69.4k - $158k
Software Engineer, MidThe Opportunity: As a software engineer, you can resolve a problem with a complete end-to-end solution in a fast, agile environment. If you’re looking for the chance to not just develop software, but to help create a system that will make a difference...Full timeContract workPart timeWork at officeLocal areaRemote work$105k - $150k
OverviewVTG is seeking a Software Engineer to support our Defense customer in Reston, VA. Our Software Engineers are at the forefront of defense technology, crafting high-impact, cutting-edge solutions that redefine innovation. We are looking for experienced Software Engineers...Contract workWork experience placement
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