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  • DevOps and back-end API Developer

    $50k - $290k

     ...customers across the country and around the globe. Swift is looking for a skilled DevOps and back-end API Developer to support the new development of a Web and Mobile system focused on providing customers with a data-driven, visually intuitive way to track their... 
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    Swift

    Reston, VA
    3 days ago

  • Java Full Stack Engineer - API & AI-Driven Backend

    A technology firm in McLean, VA is seeking a skilled Java Full Stack Developer for a long-term project. The candidate will focus on enhancing backend APIs using Java and AWS, while also maintaining the UI with JavaScript and Angular. Additionally, there are opportunities... 
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    Ampcus, Inc

    Mc Lean, VA
    1 day ago

  • Full-Stack Engineer: Cloud, APIs & Scale

    A leading technology services provider is seeking a Full Stack Developer to design and build dynamic web applications and APIs on AWS. The ideal candidate will have strong experience in full-stack development, proficiency in languages such as Golang and Python, and familiarity... 
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    Govserviceshub

    Mc Lean, VA
    4 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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    Digital Global Systems Inc

    Mc Lean, VA
    1 day ago

  • Backend Engineer (API Integration Focus)

    $130.88k - $153.13k

     ...is a leading Federal contractor that specializes in designing, developing, and delivering information technology and network solutions for...  ...Encouraged to Apply. Job Description The Backend Engineer (API Integration Focus) will design, develop, and maintain backend systems... 
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    Network Designs, Inc.

    Mc Lean, VA
    5 days ago

  • Web Application / API Services Developer - Mid Level (FI2)

     ...Web Application / API Services Developer – Mid Level (FI2) Job Description: Looking for an opportunity to revitalize an application that is used by everyone in our customer space? That's right, we're in the enviable position of starting from the beginning --... 
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    Trinity ES LLC

    Chantilly, Loudoun County, VA
    2 days ago

  • User Interface (UI) Developer

    $131.3k - $237.35k

     ...within Leidos is seeking a User Interface (UI) Developer with strong systems, software, and Agile...  ...Java backend developers to understand API requirements and ensure seamless integration...  ...authorization mechanisms, such as JSON Web Token (JWT) Preferred Qualifications:... 
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    Leidos

    Ashburn, VA
    1 day ago

  • Remote Backend Engineer (API Integration Specialist)

    $130.88k - $153.13k

    A leading Federal contractor is seeking a highly skilled Backend Engineer with an API integration focus. The role requires designing, developing, and maintaining RESTful APIs and collaborating with cross-functional teams. Qualified candidates must hold a Bachelor's Degree... 
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    Network Designs, Inc.

    Mc Lean, VA
    20 hours ago

  • Power Platform/SharePoint Developer

    $90.3k - $189.6k

     ...Job Title: Power Platform/SharePoint Developer Job Category: Information Technology...  ...defining complex custom lists and working with web-enabled InfoPath forms in SharePoint...  ...layouts and content types using the O365 API Hands-on experience with Web/SharePoint... 
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    CACI International

    Ashburn, VA
    a month ago

  • Full Stack Java Developer

    $103.8k - $218.1k

     ...Job Title: Full Stack Java Developer Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start...  ...mockups into fully functional user interfaces integrated with API enabled microservice built on Spring Boot based backend Demonstrated... 
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    CACI International

    Ashburn, VA
    5 hours ago

  • Angular Front-End Developer

    $103.8k - $218.1k

     ...Job Title: Angular Front-End Developer Job Category: Information Technology Time Type...  ...integrating Angular applications with RESTful APIs and microservices, with a strong...  ...Visualforce, Aura Components, Lightning Web Components), providing a distinct advantage... 
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    CACI International

    Ashburn, VA
    2 days ago

  • Backend Java Developer (SME)

    $70 - $75 per hour

     ...applications Build, optimize, and maintain microservices and RESTful APIs using modern Spring frameworks Partner with architects, data...  ..., user stories, and technical decisions Mentor junior developers and support engineering best practices Participate in design... 
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    District Partners LLC

    Ashburn, VA
    1 day ago

  • Senior .NET Full Stack Engineer - Azure & APIs

    A technology solutions provider is seeking a Full Stack Developer to support projects with the New York City Department of Education. This role involves designing and maintaining .NET Core applications, collaborating with technical teams, and utilizing Azure services. Candidates... 
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    Ares Enterprise

    Dunn Loring, VA
    2 days ago

  • Lead Java API Developer

     ...Title: java API Developer Location: Richmond, VA (Hybrid - 3 days onsite, Friday remote) Duration:9 month Introduction: We are seeking an experienced professional to design, develop, and manage scalable, high-performance APIs in a cloud-based environment.... 
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    Artech

    McLean, VA
    4 days ago

  • Front End Web Developer Senior

     ...motivated, innovative, skilled Front-end Developer to join our team. The candidate must be able...  ...skills. Strong understanding of web standards, information design, and best practices...  ...with web services and third-party API integrations. Knowledge of emerging technologies... 
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    Artech

    McLean, VA
    4 days ago

  • Senior Frontend Drupal Developer

     ...Position Title: Senior Frontend Drupal Developer Location: McLean, VA Duration:...  ...professional demeanor. Strong understanding of web standards, information design, and best...  ...with web services and third-party API integrations. Knowledge of emerging technologies... 

    Mindlance

    McLean, VA
    4 days ago

  • UI/UX Front-End Web Developer

    $77.6k - $176k

     ...Job Number: R0234584 UI/UX Front-End Web Developer The Opportunity: You know that a good digital experience is more than just code,...  ...libraries, or design system development Knowledge of secure API integration, Agile workflows, and government digital service... 
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    Booz Allen Hamilton

    Chantilly, Loudoun County, VA
    3 days ago

  • Front End Web Developer Senior

    $50 - $62.49 per hour

     ...We are hiring Front End Web Developer Senior! Role: Front End Web Developer Senior Supporting: Large Financial Services Client Location...  ...exposure, Adobe Creative Suite, animation libraries (GSAP), API integrations, design systems, automated testing tools, Google... 
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    Apex Systems

    McLean, VA
    4 days ago

  • Drupal Front End Developer

     ...analytical skills. Strong understanding of web standards, information design, and best...  ...GitHub, esc.) JOB DESCRIPTION Front End Developer *** is looking for a highly motivated,...  ...with web services and third-party API integrations Knowledge of emerging technologies... 
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    ICONMA

    McLean, VA
    3 days ago

  • Web Developer

     ...experience working with Java and ServiceNow developers to articulate material design with front...  ...delivery, transforming, and modernizing web-based application, system, and service...  ...including those with databases and web services/APIs to assist in decision-making regarding... 
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    Crimson Phoenix

    Herndon, VA
    4 days ago

  • Web Developer

     ...Overview We are seeking a Web Developer located in Chantilly, VA . What will you do? The primary duties are to develop, test, and deploy...  ...client-side technologies such as jQuery, CAML, XSLT, Rest API/ Web Services to be able to use the SharePoint client object model... 
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    VTG Defense

    Chantilly, Loudoun County, VA
    2 days ago

  • Mobile Application Developer

    $131.3k - $237.35k

     ...The Homeland Sector within Leidos is seeking a Mobile Application Developer to provide technical expertise on a mission-critical program...  ...Requires experience in both Front-end Mobile and Back-end RESTFUL API development. Requires experience in development of JAVA, Node... 
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    Leidos

    Ashburn, VA
    2 days ago

  • Web Developer

    $130k

     ...About the job Web Developer LCAT : IT Web Administrator, Level 2 Required Clearance: Active TS/SCI, with CI Poly. Salary...  ...~ Demonstrated experience with JSON and XML using complaint APIs, OpenSSL, and PKI protections ~ Demonstrated experience... 

    CIBR Force

    Chantilly, Loudoun County, VA
    4 days ago

  • Web Developer

    $66k - $106k

     ...Web Developer Job Locations US Requisition ID 2026-166067 Position Category Information Technology...  ...Support integration of front-end interfaces with databases, APIs, and enterprise systems to enable dynamic, real-time content delivery... 
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    Peraton

    Herndon, VA
    2 days ago

  • Web Developer Mid

    $86.6k - $181.8k

     ...Job Title: Web Developer Mid Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI...  ...• Writes interfaces and conversion routines leveraging web APIs. • Supports formal testing in controlled environment before... 
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    CACI International

    Chantilly, Loudoun County, VA
    4 days ago

  • Web Developer (TS/SCI CI Poly)

     ...Seamless Migration is seeking a career and customer-oriented Web Developer to join our team in Chantilly, VA Clearance ~ Active...  ...testing Write interfaces and conversion routines leveraging web APIs Support formal testing in controlled environment before... 
    Full time
    Immediate start
    Flexible hours

    Seamless Migration

    Chantilly, Loudoun County, VA
    5 hours ago

  • Mobile Application Developer *

    $80k - $107k

     ...Mobile Application Developer * Hybrid Remote • Ashburn, VA ( Description Are you looking to take the next steps in your career as...  ...Requires experience in both Front-end Mobile and Back-end RESTFUL API development. Requires experience in development of JAVA, Node... 
    Contract work
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    Flexible hours
    2 days per week

    Virtual Service Operations

    Ashburn, VA
    1 day ago

  • Front End Software Engineer

     ....) The ideal candidates will be hands-on developers and engineers. Requirements/Must Have: ~ Experience with Front-End web development, including JavaScript, TypeScript...  ...with unit testing Knowledge of REST APIs Experience developing, managing, and... 
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    Arena Technical Resources

    Chantilly, Loudoun County, VA
    1 day ago

  • Front End Software Engineer

    $77.6k - $176k

     ...adoption, and save time and resources. We're looking for you, a web developer who will use equal parts skill and vision to create an...  ...within a collaborative, cross-functional team ~ Knowledge of API integration ~ TS/SCI clearance with a polygraph ~ Bachelor... 
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    Booz Allen Hamilton

    McLean, VA
    5 hours ago

  • Front End Software Developer

     ...Virginia Type: Contract Job #3283 Front End Software Developer McLean, VA Company Overview: Cornerstone Defense...  .../or Kubernetes) 5. ElasticSearch 6. Developing and integrating APIs 1. AI/ML 2. AI modeling with LLMs 3. Educational or... 
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    Cornerstone Defense

    McLean, VA
    4 days ago