Average salary: $166,426 /yearly
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$220k - $250k
...is partnering with Babel Street to find a Principal Engineer, API & MCP Platform . Please see details below: About the Role... ...and delivering API-first platform capabilities that enable both developers and AI agents to interact with Babel Street's services. You will...SuggestedWork at officeRemote workHatchit Co
Reston, VA1 day ago- ...API Developer We are seeking a talented API Developer to join our team and play a key role in designing, building, and maintaining robust APIs that power our applications and services. In this position, you will collaborate with cross-functional teams to create scalable...SuggestedTemporary workFor contractorsImmediate startFlexible hours
Cymertek
McLean, VA4 days ago $197.3k - $225.1k
...Lead Software Engineer (AWS, Python, Java, React, Generative AI APIs) Do you love building and pioneering in the technology... ...Lead a portfolio of diverse technology projects and a team of developers with deep experience in distributed microservices, and full stack...SuggestedFull timePart timeInternshipH1bLocal area$197.3k - $225.1k
...Software Engineer, Back End (Java/ Python/ Go Backend, REST/ GraphQL APIs, WAF, Protocol, AWS) Do you love building and pioneering at... ...pipelines that defend Capital One's applications at scale Develop and maintain Python-based automation and tooling that manages...SuggestedFull timePart timeInternshipH1bLocal area- ...We are seeking a Mid-level API Java Developer to join our team. Working at NT Concepts means you are part of an innovative, agile company dedicated to solving the most critical challenges in National Security. Mission Focus As a member of our solutions delivery team,...SuggestedLocal areaRemote workFlexible hours
NT Concepts
Herndon, VA1 day ago $88.2k - $190.9k
API/Java/Python Developer, SME TS Clearance REQUIRED Position Description Position Description CGI Federal has an exciting opportunity for an API/Java/Python Developer within our Intel sector advancing the national security mission through cutting edge technology...SuggestedLocal area- ...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...SuggestedFull timeContract workRemote work
Securiport
Reston, VA22 hours ago - ...Server, with Kafka, RabbitMQ, or IMB MQ as a plus. You will work on APIs, microservices, and distributed systems, contributing to a... ...performance software ecosystem. You will collaborate with senior developers, DevOps engineers, and data experts in an Agile team...SuggestedFull timeContract workRemote work
Securiport
Reston, VA22 hours ago - ...build scalable, high-impact systems supporting global border security and threat detection. In this role, you’ll develop C#/.NET backend services, APIs, and microservices that power real-time data processing and analytics platforms. You’ll work closely with senior...SuggestedFull timeContract workRemote work
Securiport
Reston, VA22 hours ago - ...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...SuggestedFull time
Falls Technology
Chantilly, Loudoun County, VA22 hours ago - ...hosting providers on tenant-specific infrastructure requirements Develop and maintain operational processes, procedures, and... ...Excellent analytical, troubleshooting, and communication skills ~ API or platform-related certifications ~ CompTIA Security+ or equivalent...SuggestedFull timeRemote workFlexible hours
Vivsoft Technologies
Arlington, VA22 hours ago $104k - $140k
...global future. Two Six Technologies is seeking a Front End Developer to work on multi-domain platforms serving critical national security... ..., HTML, CSS ~ Experience working with or developing APIs Nice If you Have: Experience with Ember.js Experience...SuggestedFull timeContract workLocal areaTwosix Technologies
Arlington, VA22 hours ago- ...fast-paced hybrid environment. Responsibilities Design and develop full stack applications using Vue.js, Node.js, and Python... ...GenAI / LLM-based solutions into applications (prompt engineering, APIs, model integration) Build and maintain RESTful APIs and/or...SuggestedFull timeLocal area
Tiger Analytics Inc.
McLean, VA22 hours ago $132k - $212k
...for AI/ML development (agentic frameworks, scripting, integrations) • Hands-on experience building LLM-powered production systems (API integration, prompt management, streaming, error handling, cost management) • Experience with agentic frameworks (LangGraph, LangChain...SuggestedFull timePart timeWorldwideFlexible hoursMasterCard
Arlington, VA5 hours agonew$108k - $154k
...building software. We firmly believe that what separates a good developer from a great one is a deep understanding of the business that they... ...on Friday. Responsibilities Build big, distributed, API-driven systems for tens of thousands of users. Design and implement...SuggestedHourly payFull timeWork at officeWork from homeMonday to ThursdayCoStar Group
Arlington, VA1 day ago$96.03k - $137.18k
...External Description Mobile/Web Developer (.Net) The Air Line Pilots Association, International (ALPA) , the largest airline pilot... ...cross-browser compatibility/development, and RESTful Services and APIs are all a definite plus. Experience using automation and...Work at officeLocal areaRemote workRelocationFlexible hoursAir Line Pilots Association, Int'l.
McLean, VA5 days ago- ...Responsibilities: • Develop Android client code solutions that deliver on Product Strategy and adhere to established engineering best practices... ...the local sprint team across various disciplines (Android, iOS, APIs, Web, etc.) • Own and lead delivery of major components and...Local area
3B Staffing LLC
McLean, VA22 hours ago - ...to application The Front-End Software Engineer will design and develop complex new software products, or make significant enhancements... ...and usability. · Experience with integrating with third part APIs. · Proficient understanding of code versioning tools, such as...Full time
Leading Path Consulting
McLean, VA22 hours ago - ...Special Operations customers. Our engineer-led software teams develop technical solutions on an aggressive schedule across the DoW and... ..., or SvelteExperience working on fullstack solutions with REST APIs and complex data Experience with SDLC tools, such as JIRA, Confluence...Full timeFor subcontractor
Black Cape
Arlington, VA22 hours ago $150k - $200k
...About Us: SwarmInt is a defense AI startup developing computer vision and edge AI capabilities for military expeditionary forces with... ...visualization from sensor feeds Implement backend services and APIs for data processing and integration Deploy containerized...Full timeSwarmint
Arlington, VA22 hours ago- Job Title: Full Stack Developer \ \ Location: Mclean, VA \ \ \\ \ Overview: \\ Looking for a Full Stack Developer with strong experience... .... The candidate should be adept with cloud services, API design, and data integration in enterprise -level environments...Contract work
Govserviceshub
West Mclean, VA22 hours ago $115k - $203k
...platform security environment, which consists of commercial and custom developed security controls that run within the IDE, the CI/CD system,... ...controls using infrastructure as code, scripting, and API integrations to scale security across all web applications in a...Hourly payFull timeWork at officeWork from homeMonday to ThursdayCoStar Group
Arlington, VA22 hours ago- ...Azure Service Bus, Azure AD / MSAL (OAuth2/OIDC) ~ Strong C# .NET 8 - Azure Functions, Entity Framework Core, xUnit testing, REST API design ~ Strong React / TypeScript / Next.js 15 - App Router, RTK Query, Tailwind CSS, component library patterns ~ Azure SQL...Contract work
eSolutionsFirst
Vienna, VA4 days ago $111.8k - $221.8k
...strong leadership. They will ensure code quality, mentor junior developers, and manage project technical direction. Here's what you'll... ...another modern backend language) for backend services and RESTful APIs development ~ SQL and/or NoSQL databases ~ Experience...Full timeLive inWork at officeLocal areaAccenture Federal Services
McLean, VA22 hours ago$103.8k - $218.1k
...Job Title: .NET Developer Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: Secret... ...equivalent relational database systems • Familiarity with RESTful API design and integration • Proficiency with Git or equivalent...Full timeContract workWork experience placementWork at officeFlexible hoursCACI International
Arlington, VA4 hours agonew- ...candidate is a self-directed engineer with demonstrated experience developing and supporting geospatial, imagery, AI/ML, or analytic... ...Responsibilities Develop and integrate backend services, APIs, data connectors, plugins, and platform components that support...Full timeRemote work
Vantor
McLean, VA3 days ago - ...Salesforce Developer Role: Salesforce Developer Skills: Application Programming Interface (API), DevOps Continuous Integration and Continuous Delivery (CI/CD), Salesforce Development and Technical Design, Banking and Financial Technology, Salesforce Community Cloud...
Kasmo Global
McLean, VA3 days ago - ...Senior UI Developer - ReactJS Developing new highly responsive user-facing features using React.js. Building reusable components... ...flexible and well-structured frontend architecture, along with the APIs to support it. Optimizing components for maximum performance...Flexible hours
Samprasoft
McLean, VA2 days ago - ...Collaborate with product and design teams to bring intuitive and accessible user experiences to life Integrate with backend systems and APIs to create seamless and performant interfaces Lead and participate in architecture discussions and code reviews to uphold engineering...Full time
Meibel
Falls Church, VA1 day ago $131.3k - $149.8k
...We are seeking Workday Engineers who are passionate about developing highly-resilient, fundamentally-sound objects to support the Human... ...solutions At least 2 years of experience working with APIs within the Workday environment using REST or SOAP Preferred...Full timePart timeH1bLocal areaCapital One Financial Corp
McLean, VA6 days ago
