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  • Backend/API Engineer

    Backend/API Engineer Everforth ECS is seeking a Backend/API Engineer to work in the National Capital Region covering the Pentagon, Falls...  ...to production model artifacts within Unclassified networks. Develop scalable serving frameworks using Kubernetes, API gateways,... 
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    ECS

    Fairfax, VA
    2 days ago

  • Low-Latency Backend Engineer: Target Tracking & APIs

     ...candidate, active, timeout, split/merge) Build and maintain REST APIs with strict latency SLOs (sub-20ms update paths) Implement persistent storage using MySQL and long-term archival in ClickHouse Develop composite fingerprint matching algorithms with policy-weighted... 
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    Work visa

    Digital Global Systems Inc

    Mc Lean, VA
    1 day ago

  • Front End Software Developer

    $140k - $170k

     ...Front End Software Developer Blu Omega is seeking a Front End Software Developer to support...  ...front‑end development of modern, responsive web applications and user interfaces that...  ...Collaborate with backend developers to integrate APIs and data services Create secure and... 
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    Temporary work

    Blu Omega LLC

    Ashburn, VA
    3 days ago

  • Mobile App Engineer (iOS/Android) - API-Driven

     ..., located in McLean, Virginia, is seeking a skilled mobile app developer. The role involves designing and maintaining mobile applications...  ...in Kotlin, Java, and Swift, as well as knowledge of RESTful APIs and Agile practices. If you are passionate about building secure... 
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    Robotics Technologies LLC

    Mc Lean, VA
    3 days ago

  • Backend/API Engineer — AI-Driven War Data Platform

    ECS is seeking a Backend/API Engineer to join their team in the National Capital Region, specifically for the War Data Platform initiative...  ...and must possess a current Secret security clearance. You will develop scalable backend components and maintain the integration of AI... 
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    ECS

    Fairfax, VA
    2 days ago

  • Full Stack Developer

     ...more… Job Description Xenith Solutions is seeking a Full Stack Developer with agile methodology experience to join our team in support of...  ...transforming mockups into fully functional user interfaces integrated with API‑enabled microservice built on Springboot/Java based backend... 
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    Xenith Solutions

    Ashburn, VA
    1 day ago

  • Senior Full Stack Developer

     ...Full-Stack Developer (Hybrid – Ashburn, VA) This position is a hybrid role where the developer...  ...Design, develop, and maintain responsive web and mobile applications. Collaborate with...  ...practices. Develop and consume RESTful APIs. Maintain code quality through unit testing... 
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    Local area
    Remote work
    Flexible hours
    2 days per week

    NiyamIT Inc.

    Ashburn, VA
    13 hours ago

  • Java Full Stack Developer APIs, UI & AI Initiatives

    Ampcus, Inc is seeking a skilled Java Full Stack Developer in McLean, VA, to enhance and maintain internal applications. The role primarily involves backend development with Java, Spring, REST, and AWS, alongside UI development using JavaScript, TypeScript, and Angular.... 
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    Ampcus

    Mc Lean, VA
    4 days ago

  • Web Developer with TS/SCI Clearance - Cloud & API

    HRB is seeking a Software Developer to work on-site in McLean, VA. This position is part of a mission-critical team processing large amounts...  ...clearance and have demonstrated experience with modern web applications, using technologies like JavaScript/TypeScript. The... 
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    HRB

    Mc Lean, VA
    2 days ago

  • Full Stack Developer, Team Lead

    $131.3k - $237.35k

     ...Leidos is seeking a Full Stack Software Developer Team Lead, with strong systems, software,...  ...visual design and define needs for build APIs. Maintain high standards of software...  ...(EKS), Ansible, GIT, Rafay ~ RESTful Web Services, Hibernate ~ Oracle/ MySQL/Postgres... 
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    Immediate start

    Leidos

    Ashburn, VA
    4 days ago

  • Web Developer with TS/SCI Clearance - Cloud & API

    Armison Tech is seeking a skilled Software Developer for an on-site position in McLean, VA, who will be part of a mission-critical team. Candidates...  ...with polygraph clearance and will engage in the development of web applications utilizing modern technologies like JavaScript/... 
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    Armison Tech

    Mc Lean, VA
    3 days ago

  • Jr. Front End Developer

     ...Jr. Front End Developer • Vienna, VA The Jr. Front End Developer will develop visualization...  ...develop, and maintain back‑end services and APIs Collaborate with front‑end developers and...  ...field 1+ years of experience with web design and web front‑end development Proven... 
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    Chenega Corporation

    Vienna, VA
    13 hours ago

  • Front End Developer (mid-level)

     ...Front End Developer (Mid-Level) Systems Integration & Development (SID), an award‑winning IT...  ...Develop, maintain, and enhance responsive web applications and user interfaces that provide...  ...End development experience with .NET Web Api. Postgres database experience. Hands‑on experience... 
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    Full time
    For contractors
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    Job Details

    McLean, VA
    5 days ago

  • Senior Frontend Developer

    $108k - $195k

     ...OverviewPTR Global is hiring a Senior Frontend Developer. This is a contract hybrid role, based in...  ...with other IT groups, Dev Ops, and REST API middleware teams.Responsibilities Include:...  ...experience in building large-scale web-based applications using JavaScript/TypeScript... 
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    TryApplyNow

    McLean, VA
    1 day ago

  • Front End Developer, Senior

    $86.8k - $198k

     ...The Opportunity As a senior full stack developer at Booz Allen, you will design and deliver...  ...Have: 6+ years of experience with Front‑End web development, including JavaScript,...  ...Experience with unit testing Knowledge of REST APIs TS/SCI clearance with a polygraph HS... 
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    Casual work
    Work at office
    Remote work

    Booz Allen Hamilton

    Chantilly, Loudoun County, VA
    1 day ago

  • Front End Developer

     ...Duties May Include: Design, develop, and maintain back-end services and APIs Collaborate with front-end developers and stakeholders to deliver end-to-end solutions...  ..., or STEM-related field 2+ years of experience with web design and front-end development Proven experience... 
    Contract work
    Temporary work

    Triglocon

    McLean, VA
    13 hours ago

  • Front End Web Developer Senior

    $104k - $129k

    # Front End Web Developer SeniorApex SystemsContractseniorMcLean, Virginia, US$104k – $129kPosted Yesterday## Role OverviewApex Systems is...  ...appealing UI components* Integrate frontend applications with backend APIs and data services* Collaborate with cross-functional teams to... 
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    TryApplyNow

    McLean, VA
    2 days ago

  • Full Stack Developer: Craft Scalable Web Apps & APIs

    TLA-LLC is looking for a skilled Full Stack Developer to join our team in McLean, Virginia. You will design, develop, and maintain robust web applications, ensuring optimal performance across platforms. The ideal candidate is proficient in front-end technologies like HTML... 

    TLA Inc

    Mc Lean, VA
    13 hours ago

  • UI/UX Engineer - $189K - $204K

    $189k - $204k

     ...delivering secure, accessible, and high-performance web experiences for both administrators and end users. Key Responsibilities Design, develop, and maintain custom WordPress themes and...  ..., JavaScript Back-end: PHP, MySQL, WP REST API, JSON Experience developing custom... 
    Immediate start
    Flexible hours

    RCT Systems

    Reston, VA
    13 hours ago

  • Full Stack Web Developer: APIs, Security & CI/CD

    A government solutions provider is seeking an experienced Full Stack Web Developer in Fairfax, Virginia. The role involves software application development for a wide-scale data inventory project. Candidates must have at least 11 years of relevant experience, a Bachelor... 
    Full time

    CGS Federal (Contact Government Services)

    Fairfax, VA
    13 hours ago

  • Full Stack API Developer- TS/SCI with Polygraph

     ...expertise to protect our country from threats. Job Description Deliver simple solutions to complex problems as an Full Stack API Developer at GDIT. Here, you’ll tailor cutting-edge solutions to the unique requirements of our clients. With a career in application... 
    Work experience placement

    General Dynamics Information Technology

    Chantilly, Loudoun County, VA
    a month ago

  • Full Stack API Developer- TS/SCI with Polygraph

    $187k - $253k

     ...experience US Citizenship Required: Yes Job Description: Deliver simple solutions to complex problems as an Full Stack API Developer at GDIT. Here, you'll tailor cutting-edge solutions to the unique requirements of our clients. With a career in application... 
    Full time
    Temporary work
    Part time
    Work experience placement
    Immediate start
    Remote work
    Worldwide
    Flexible hours

    GDIT

    Chantilly, Loudoun County, VA
    a month ago

  • UI Front End Developer

     ..., excited to join that effort. To learn more about our exciting organization, please visit us at . We are seeking a UI Front End Developer with Spring Boot and Microservices experienceto join our team in Ashburn, Virginia. The UI Front-End Developer will actively engage... 
    Work experience placement
    Work at office
    Flexible hours
    2 days per week

    UNISSANT

    Ashburn, VA
    1 day ago

  • UI Developer

     ...Role: Senior UI Developer (React) Location: McLean, VA Interview mode: Must be able to interview on-site Duration: Long term Job Description...  ...18, Redux JavaScript / TypeScript HTML, CSS, SASS RESTful APIs & Single Page Applications (SPA) Experience with Vite.js or modern... 

    HeyBeauty07

    McLean, VA
    4 days ago

  • Senior Front-End Engineer: Scalable UI & AI-Driven Apps

    $104k - $129k

    TryApplyNow is looking for a Senior Front End Web Developer to join their team in McLean, Virginia. This contract position emphasizes creating...  ...React or Angular, ensuring seamless integration with backend APIs. The ideal candidate will have 7-10 years of experience in... 
    Contract work

    TryApplyNow

    Mc Lean, VA
    2 days ago

  • Junior Java Backend Engineer

     ...Saic is seeking a motivated Backend Developer (Entry Level) to join our team in Ashburn, VA. This role involves working closely with tech leads, developing Java applications, and adhering to AGILE practices. Candidates should possess a Bachelor's degree in computer science... 

    SAIC

    Ashburn, VA
    2 days ago

  • Frontend Engineer II: React/Next.js + GraphQL (Remote)

     ...experience in software development with a strong portfolio, and familiarity with building applications that integrate with GraphQL APIs. You will work closely with backend engineers and contribute to a team environment that values innovation and collaboration. #J-1880... 
    Remote work

    Yahoo Holdings Inc.

    Reston, VA
    1 day ago

  • Web Developer Intermediate

    Overview The Web Developer Intermediate serves as the lead technical implementer for the user-facing platform, responsible for the design,...  ..., and deployment of the secure Data Access Mechanisms (UI and APIs) for the Office of Naval Research (ONR) Comptroller’s Office Data... 
    Temporary work
    Work at office
    Immediate start
    Flexible hours

    Integral Federal, Inc.

    Mc Lean, VA
    3 days ago

  • Java Full Stack Developer

     ...Overview We are looking for an experienced Java Developer to join our technology team supporting a leading mortgage solutions provider....  ...Responsibilities Design, develop, and maintain scalable backend services and APIs using Java, Spring, Spring Boot, and Microservices architecture... 

    eSolutionsFirst

    McLean, VA
    1 day ago

  • Fullstack Java Developer

     ...Overview Reporting to the Lead Project Manager, the Full Stack Developer will help in the development of software and specialized utility...  ...with design and development of Microservices and RESTful APIs in an AWS and Docker platform Experience with container (e.g. Docker... 
    Work from home
    Flexible hours

    Basecamp Consulting and Solutions

    Reston, VA
    2 days ago