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  • Full Stack API Developer- TS/SCI with Polygraph

    $187k - $253k

     ...Full Stack API Developer 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 development, you'll make the end user's experience... 
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    General Dynamics

    Chantilly, Loudoun County, VA
    11 hours agonew

  • Web Application / API Services Developer - Senior Level (FI3)

     ...Web Application / API Services Developer – Senior Level (FI3) Job Description: Are you opinionated on what it takes to create great software AND great teams? Are you interested in using your experience to help others grow in their career? Are you looking for... 
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    Trinity ES LLC

    Chantilly, Loudoun County, VA
    4 days ago

  • Software Tester / QA Engineer (Web & API Testing)

     ...TS/SCI w POLY REQUIRED) Software Tester / QA Engineer (Web & API Testing) We are seeking a detail-oriented and technically...  ...Postman and Swagger to test, document, and validate APIs Develop and maintain automated test scripts using frameworks such as Cypress... 
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    Falls Technology

    Chantilly, Loudoun County, VA
    16 hours ago

  • API Developer

     ...API Developer LOCATION Chantilly, VA 20151 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are seeking a talented API Developer to join our team and play a key role in designing, building, and... 
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    Cymertek

    Chantilly, Loudoun County, VA
    3 days ago

  • Network Management Systems (NMS) Application Integrator

    $131.8k - $290k

     ...observability platforms (e.g. Splunk, Elastic), and other enterprise applications (e.g., ServiceNow, CMDB, security tools) Develop and maintain APIs, middleware, and custom scripts to facilitate data exchange and process automation Optimize existing integrations to... 
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    CACI International

    Hamilton, VA
    23 hours ago

  • Full-Stack Software Developer (SME)

    $149.6k - $254.32k

     ...Experience, & Skills We are seeking an experienced Full Stack Developer to join our technology-based program supporting a key...  ...JavaScript, TypeScript, CSSBack-end development: Java Spring, APIs, microservicesDatabase management: RDBMS and NoSQL databasesTesting... 
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    BAE Systems USA

    Hamilton, VA
    22 hours ago

  • Windows Application Developer

     ...markets. Nightwing is seeking experienced Windows Application Developers to support the design, development, testing, and maintenance...  ...Perform low-level systems development using Windows APIs Develop and maintain software using C, C++, and Python Utilize... 
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    Nightwing

    Hamilton, VA
    2 days ago

  • AI/ML Platform Engineer

    $152.15k - $205.85k

     ...related experience ? Technical skills: -5+ years of experience developing in Python or other programming language -Demonstrated hands-on experience deploying LLMs for inference outside of cloud APIs -Understanding of model formats -Familiarity with OpenAI-... 
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    General Dynamics Information Technology

    Hamilton, VA
    1 day ago

  • API Developer

     ...Job Description Job Description Description LT Consulting is looking for an API developer to develop custom solutions for our clients. The role will focus on back end development using a variety of software languages. This position is located in Northern Virginia... 
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    LT Consulting

    Chantilly, Loudoun County, VA
    4 days ago

  • Software Engineer

    $82.1k - $172.4k

     ...The Opportunity: Work on a multi-contractor team to design, develop, and maintain a modern web application that enables space operators...  ...issues • Interfacing with other systems via RESTful API • Developing small-scope applications that integrate with a larger... 
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    CACI International

    Hamilton, VA
    4 days ago

  • Senior Software Engineer

     ...investigation required. Job Duties and Responsibilities: Develop and maintain complex Angular 2+ applications, ensuring high-...  ...efficient code including Microservices with Java, Spring Boot, and REST API's Collaborate closely with UX designers, business analysts,... 
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    Goldschmitt and Associates LLC

    Leesburg, VA
    3 days ago

  • Senior Software Engineer - DevOps / Infrastructure (Onsite)

    $95.5k - $181.7k

     ...you will be part of an innovative team focused on designing and developing holistic, integrated simulation and training solutions,...  ...leaf architecture). Experience in microservices using RESTful APIs. Experience with Agile Development Methodologies (e.g. Scrum... 
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    RTX

    Hamilton, VA
    22 hours ago

  • ServiceNow Developer Senior

     ...Job Title: ServiceNow Developer Senior Location: Leesburg, Virginia Type: Contract Compensation: $70-80/HR W-2...  ...ITAM, or ITOM preferred). ~ Proficiency with JavaScript, Glide API, Flow Designer, and ServiceNow scripting. ~ Experience with update... 
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    System One Holdings, LLC

    Leesburg, VA
    2 days ago

  • Senior ServiceNow Developer

    $153.38k - $260.74k

     ...Create, deploy and maintain ServiceNow infrastructure and related APIs for all customer applications in an AWS cloud-based environment...  ...rigor, to include configuration management, testing Develop/engineer as part of an Agile scrum team Required Education, Experience... 
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    Local area

    BAE Systems USA

    Hamilton, VA
    4 days ago

  • Full Stack Software Engineer

     ...Engineer at Commence, you will play a key role in designing, developing, and maintaining both front-end and back-end components of our...  ...Python, PHP (Laravel), and C#. Build and integrate RESTful APIs to enable seamless interaction between frontend and backend systems... 
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    Commence

    Leesburg, VA
    3 days ago

  • ServiceNow Developer

    $130.36k - $221.6k

     ...customer solutions with orchestrated workflows with customer tool APIs. This is a fast-paced, challenging, and career rewarding...  ...all customer applications in an AWS cloud-based environment Develop and maintain ServiceNow utilizing Continuous Integration/Continuous... 
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    Local area

    BAE Systems USA

    Hamilton, VA
    5 days ago

  • Senior Software Engineer - Training Systems Software (Onsite)

    $95.5k - $181.7k

     ...the Strategic Defense Solutions (SDS) business area. Our teams develop and build highly realistic simulators and training systems for...  ...Agile development methodologies Experience using Win32/Win64 APIs and associated Linux API Experience working with databases; formatting... 
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    RTX

    Hamilton, VA
    16 hours ago

  • Mid-Level Software Engineer

     ...and investigative ecosystem. Key Responsibilities · Design, develop, test, and manage application development projects in support of...  ...Databases and SQL (MySQL, PostgreSQL, Microsoft SQL) REST API development and integration Git and other source control management... 
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    Immediate start

    AnaVation LLC

    Chantilly, Loudoun County, VA
    3 days ago

  • Mid-Level Software Developer

     ...utilizes data and technology. We are looking for a Mid-Level Software Developer to join our team and contribute to the design, development, and...  ...authentication, and role-based access control. Integrate APIs, databases, and other services to support functionality... 
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    Redhorse Corporation

    Chantilly, Loudoun County, VA
    4 days 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... 
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    2 days per week

    Virtual Service Operations

    Ashburn, VA
    3 days ago

  • Mobile App Developer - Hybrid

     ...Job Description We are seeking an experienced Mobile App Developer to support a mission-critical DHS/CBP program focused on developing...  ...platforms, integrating mobile front-ends with secure RESTful APIs and cloud-backed services in a fast-paced Agile environment.... 
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    Novul Solutions

    Sterling, VA
    3 days ago

  • Mobile App Developer

     ...Mobile App Developer RMantras is looking for a Mobile App Developer to provide technical expertise on a mission-critical program whose...  ...Requires experience in both Front-end Mobile and Back-end RESTFUL API development. Requires experience in development of JAVA, Node... 

    Navstar

    Ashburn, VA
    11 hours agonew

  • UiPath/Power BI Developer

     ...Insurance ~ And much more… Job Description: The UiPath Developer / Power BI Developer will support the J62LB Enterprise Testing...  ...technology demonstrations. Familiarity with Excel automation, APIs, and data connectors. Relevant certifications such as:... 
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    Xenith Solutions

    Leesburg, VA
    4 days ago

  • User Interface Developer

     ...Job Title: User Interface (UI) Developer Location: Ashburn, VA, 2 times a week Industry: Technology Date Opened: 07/23/2025 Job...  ...Collaborate closely with Java backend developers to understand API requirements and ensure seamless integration. Drive thorough... 
    Full time
    Work experience placement
    Local area

    CMCI

    Ashburn, VA
    19 days ago

  • User Interface (UI) Developer

     ...User Interface Developer We are seeking an experienced User Interface (UI) Developer to lead the design and development of scalable,...  ...practices Collaborate with backend developers to integrate RESTful APIs and microservices Own and implement scalable front-end... 
    Immediate start
    Flexible hours

    Novul Solutions

    Ashburn, VA
    4 days ago

  • UI Developer

     ...-critical space operations? NS2 Mission is looking for a UI Developer with strong Vue.js experience to craft modern, responsive applications...  ...interactions Integrate front-end components with RESTful APIs and backend services Optimize UI performance and initial... 
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    NS2 Mission

    Chantilly, Loudoun County, VA
    1 day ago

  • Prin. Software Engineer (Elastic)

     ...configuring ELK. Using Elastic search Indices, Elastic search APIs, Kibana Dashboards, Log Stash and Beats. Using or creating...  ...Native Security Associate (KCSA), Certified Kubernetes Application Developer (CKAD), Certified Kubernetes Administrator (CKA), or Certified... 

    Nightwing

    Hamilton, VA
    16 hours ago

  • Java, Scala, Python Developer

     ...Java, Scala, Python Developer LOCATION Chantilly, VA 20151 CLEARANCE TS/SCI Full Poly (Please note this position requires...  ...Data Engineer, Distributed Systems Developer, Big Data Developer, API Developer, etc. DEGREE (Level Desired) Bachelor's Degree... 
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    Cymertek

    Chantilly, Loudoun County, VA
    3 days ago

  • Senior Cloud Platform Engineer

    $180k

     ...paced, challenging, and career rewarding experience to recruit and develop top talent and solutions on one of the most complex and high-...  ...as ServiceNow or custom-built systems • Experience designing APIs such as REST or GraphQL and event-driven systems • Experience... 
    Flexible hours

    Synergy ECP

    Sterling, VA
    11 days ago

  • Mobile Backend Developer

     ...teams to be part of a team of engineers in designing solutions and developing state-of-the-art responsive customer experiences and build...  ...web services and cloud native apps using Java, Spring Boot, REST API, Graph QL, Typescript, Nest JS, Kubernetes, Docker, and other... 
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    Samprasoft

    Chantilly, Loudoun County, VA
    1 day ago