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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
    2 days ago

  • Backend & Middleware Engineer - Java/Spring, Secure APIs

    A technology solutions provider is seeking a Mid-level Backend/Middleware Engineer to design, develop, and maintain secure and scalable API solutions. The successful candidate will utilize Java and Spring Boot, emphasizing robust security measures such as OAuth 2.0 and... 
    Suggested
    Remote work

    Knowledge Management, Inc.

    Washington DC
    12 hours ago

  • Senior Backend Engineer - Java/Python, High-Impact APIs

    A technology services company is seeking a Backend Software Engineer to develop scalable backend services and RESTful APIs in Alexandria, VA. Candidates should have 8-12 years of experience in backend engineering, a Bachelor’s degree in Computer Science or related field... 
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    COMFORT SYSTEMS

    Alexandria, VA
    12 hours 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
    12 hours 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
    3 days ago

  • Full-Stack Engineer: Build React UI + Robust APIs

    $60 - $75 per hour

     ...leading technology staffing firm is seeking an experienced developer to enhance a legacy web application and build a new React UI for investment...  ...from AngularJS to React. Candidates should possess strong API development experience and thrive in Agile team environments... 
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    Hourly pay

    Insight Global

    Washington DC
    4 days ago

  • Senior Backend Engineer: Scalable .NET API for Benefits

    Employee Navigator, a leading SaaS provider, is seeking a Senior Backend Engineer to design and maintain APIs for their benefits enrollment platform. The role requires extensive experience in C# and API development, working collaboratively in a fast-paced environment.... 
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    Employee Navigator

    Bethesda, MD
    2 days ago

  • Full Stack Developer API AIML

    Job Description Job Description We’re seeking a Full Stack Developer with AI/ML and API experience to build and enhance modern applications, APIs, chatbot features, and user‐focused workflows. You’ll support integration efforts, testing, and UI/UX improvements while contributing... 
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    Local area

    Azulo LLC

    Washington DC
    3 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
    12 hours ago

  • Senior Full-Stack Engineer, FinTech API & Platform

    $185k - $225k

     ...financial technology company in Austin is looking for a full-stack developer. This role requires 5+ years of software engineering experience...  ..., Node.js, and React desired. You'll work on building scalable APIs and user experiences while investigating issues proactively. A... 
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    Method Financial

    Washington DC
    4 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
    1 day 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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    For contractors

    Crimson Phoenix

    Herndon, VA
    3 days ago

  • Senior Django Backend Engineer — APIs & Scale

     ...systems using Django and enhance integrations for a mobile app and web platform. Key responsibilities include building high-quality backends, collaborating on architecture decisions, and developing APIs. The ideal candidate has deep Django app experience and a strong grasp... 
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    Ashworth and Parker Limited

    Alexandria, VA
    1 day ago

  • Web Application Developer

     .... ~10 years proven work experience as a Front-end developer i.e. designing and developing the web applications robust and scalable web applications from...  ...7 & above ~ Experience in Integrating third-party APIs and services to extend the functionality of our applications... 
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    Work experience placement

    RIT Solutions Inc/ Tech Dev IT/ Texperts Inc/ConceptsIT, Inc...

    Reston, VA
    2 days ago

  • UX/UI Front End Developer

     ...UX/UI Front End Developer ID 2025-3069 Job Locations US Category...  ...integration between front-end and system APIs. ~ Implement data compression, caching...  ...DoD 8570 compliance). ~ Certified Web Accessibility Specialist (CWAS) or UX Design... 
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    Decision Point

    Reston, VA
    3 days ago

  • UI Software Engineer

    $104k - $166k

     ...The Role: Seeking an experienced UI engineer with strong API development skills to build and enhance analytic applications in an Agile DevSecOps environment. You will design, develop, test, and optimize web services and modern JavaScript-based UIs using REST, JSON,... 
    Contract work
    Shift work

    Peraton

    Herndon, VA
    4 days ago

  • Java Full Stack Developer

     ...Title: Full Stack Developer - focus on microservices Architecture Location: On Site...  ...integrate external software libraries and APIs into existing projects Below are...  ...field Excellent knowledge of front-end web programming languages, such as HTML, CSS,... 

    RIT Solutions Inc/ Tech Dev IT/ Texperts Inc/ConceptsIT, Inc...

    Reston, VA
    2 days ago

  • AI/ML Full-Stack Engineer: APIs & Chatbots

    A technology solutions provider located in Washington, D.C. is seeking an experienced Full Stack Developer to create and enhance applications and APIs, focusing on AI/ML and user-friendly workflows. Responsibilities include developing secure APIs, chatbots, and conducting... 

    Azulo LLC

    Washington DC
    3 days ago

  • Systems Integrator (API/Mulesoft SME)

     ...responsible for designing, implementing, and maintaining integration solutions using MuleSoft and API management technologies. You will work with both business and technical teams to develop strategies for integrating disparate systems and applications, ensuring data flows... 

    Apex Systems

    Washington DC
    4 days 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... 

    Ares Enterprise

    Dunn Loring, VA
    1 day ago

  • Software Engineer (Front-End) / APIS

     ...global border security, threat detection, and analytics systems. In this role, you'll develop responsive front-end applications and integrate with C#/.NET microservices and APIs powering real-time data platforms. You'll work alongside senior engineers, DevOps, and product... 
    Contract work
    Remote work

    SECURIPORT

    Reston, VA
    4 days ago

  • Web Application Developer - Front End

     ...Polygraph US Citizenship Required As an Front End Web Application Developer, you will... Planning, conducting, and coordinating...  ...Jasmine/Karma). Familiarity with Java-based back-ends, RESTful APIs, Microservices leveraging Docker & Kubernetes, XML, UML, VS... 
    Immediate start

    Reinventing Geospatial

    Herndon, VA
    1 day ago

  • Senior .NET Engineer: .NET 8, Kubernetes & APIs

     ...solutions provider in Washington, DC is seeking a skilled Senior .NET Developer to craft cutting-edge solutions utilizing .NET 8 and Kubernetes...  ...and project managers to implement scalable microservices and APIs using domain-driven design principles. Ideal candidates should... 

    Insight Global

    Washington DC
    2 days ago

  • UI React Engineer - Clearance Required

     ...Here at BTI360, we've built a culture that's passionate about developing software engineers. Software doesn't build itself. People do. In...  ...intuitive and accessible user experiences that integrate with RESTful APIs Translate complex data and workflows into clear, usable... 
    Full time
    Immediate start

    BTI360 Website

    Herndon, VA
    12 hours ago

  • Fullstack Engineer (Java, Angular with AWS)

    $110k

     ...Programming experience with Java, J2EE, XML, and Web Services. ~ Must have AWS Services...  ...development Methodology ~ Experience developing in distributed application environments...  ..., AWS CodePipeline , AWS Lambda, API Gateway, AWS CLI/Yaml/CloudFormation, Serverless... 

    Maintec Technologies

    Reston, VA
    1 day ago

  • Full Stack Developer (Java, Spring Boot, Angular)

    $112k - $179k

     ...Full Stack Developer (Java, Spring Boot, Angular) Job Locations US Requisition ID 2026-165373 Position Category...  ...programming. ~ Strong knowledge of designing and implementing RESTful APIs, including standards, versioning, and documentation. ~... 
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    Local area
    Remote work
    Shift work
    2 days per week
    3 days per week

    Peraton

    Herndon, VA
    12 hours ago

  • Full-Stack Web Developer

     ...Science Systems and Applications Inc. (SSAI) is seeking a full-stack web developer to support NASA Earth Science programs. The developer will be...  ...side coding experience, building database schemas and queries, API creation and deploying applications ensuring end-to-end... 
    Permanent employment
    Work experience placement
    Remote work

    Science Systems and Applications

    Vienna, VA
    12 hours ago

  • Full Stack Developer w/Ruby on Rails

    $112k - $130k

    Description Job Title: Full Stack Developer w/Ruby on Rails Clearance Required: US Citizen, DHS Public Trust EOD Work Location:...  ...end-to-end customer features, one by one Develop and maintain API specifications using Swagger Editor Develop new features... 
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    Remote work
    Flexible hours
    Shift work

    Alpha Omega Integration, LLC

    Vienna, VA
    12 hours ago

  • SharePoint Administrator

    $90k

     ...complex, escalated issues and collaborate with Developers to resolve and prevent performance and...  ...in configuring and managing Project Web App (PWA) on-premise versus in the cloud....  ...HTML5, CSS3, PowerShell, XML, XPath, REST, API, .Net, JavaScript, jQuery, SQL, VBA, Microsoft... 
    Contract work
    Casual work
    Afternoon shift

    MAXIMUS

    Vienna, VA
    3 days ago

  • Full Stack Web Developer

    $75.2k - $158.1k

     ...Job Title: Full Stack Web Developer Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start...  ...and Linux OS Code custom front-end web applications, RESTful APIs, and back-end data logic and updates Develop modern User... 
    Full time
    Contract work
    Work experience placement
    Immediate start
    Flexible hours

    CACI International

    Herndon, VA
    12 hours ago