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- ...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 work
Hatch IT
Reston, VA21 days ago - A leading staffing solutions company is seeking a Python Developer for a hybrid position in McLean, VA. The ideal candidate will have over... ...Django and Flask, and be well-versed in developing RESTful APIs. Responsibilities include maintaining code quality, optimizing...SuggestedHourly pay
- ...Mid-Level API Java Developer Herndon, VA We are seeking a Mid-level API Java Developer, to join our team. Working at NT Concepts means that you are part of an innovative, agile company dedicated to solving the most critical challenges in National Security. We're...SuggestedLocal areaRemote workFlexible hours
NT Concepts
Herndon, VA4 days ago - ...Job Title: Java Lead - API Developer Duration: 9 Months Location: Richmond VA 23238 We are looking for an API Developer Required Skills Programming Languages: Proficiency in at (Python, Java, Go) RESTful API Design: Deep understanding of REST principles, methods...Suggested
Spectraforce Technologies
McLean, VA13 days ago $180k
...seeking an SME Systems Engineer to provide technical leadership for API Gateway technologies, cloud architecture, and enterprise... ...necessary to allow you the room to pursue everything you want to develop in your personal life. We offer a generous Paid Time Off benefit...SuggestedFlexible hoursSW Complete
Sterling, VA1 day ago- ...Backend/API Engineer Everforth ECS is seeking a Backend/API Engineer to work in the National Capital Region covering the Pentagon... ...to production model artifacts within Unclassified networks. Developing scalable serving frameworks using Kubernetes services, API...SuggestedContract work
ECS
Fairfax, VA17 hours ago - 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...Suggested
$150k - $180k
Steampunk in McLean, Virginia, is seeking a Senior Integration Architect to enhance our DevSecOps practice. This role focuses on developing APIs and integration solutions to connect various services and data efficiently. Candidates should have a strong background in cloud...Suggested$150k - $180k
Steampunk is seeking an experienced Integration Architect based in McLean, Virginia. In this role, you will develop APIs, microservices, and handle integrations within our DevSecOps practice. The ideal candidate has 8 years of experience with cloud platforms like AWS and...Suggested$150k - $180k
Steampunk is looking for an Integration Architect in McLean, Virginia. This role involves developing APIs and integration capabilities to help clients achieve their mission. Responsibilities include understanding stakeholder needs, creating APIs, and ensuring system security...Suggested- ...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...SuggestedWork visa
$122k - $182k
Fairygodboss is seeking an experienced Python developer to join their Financial Engineering Team in McLean, Virginia. You will play a vital... ...skills, with responsibilities including developing RESTful APIs and implementing automated testing strategies. The compensation...Suggested- 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,...SuggestedContract workLocal area
- ...Full-stack Engineer - Model Zoo UI/API Everforth ECS is seeking a Full-stack Engineer - Model Zoo UI/API to work in the National... ...at mission speed. Responsibilities include: Developing and advancing user interface and application programming interface...SuggestedContract work
ECS
Fairfax, VA17 hours ago $85k - $170k
Steampunk is looking for a Mulesoft Developer to join our DevSecOps practice in McLean, Virginia. The successful candidate will develop APIs and integrations using the Mulesoft platform, ensuring systems are functional and secure. The role requires a B.S. in IT or equivalent...Suggested- ...technology company located in Virginia is looking for a skilled Python Developer to develop, maintain, and scale web applications using the... ...7-10 years of professional experience, strong knowledge of REST API integration, and a solid understanding of OOP and MVC...
$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 workRemote workFlexible hours2 days per weekVirtual Service Operations
Ashburn, VA1 day ago- ...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 timeWork experience placementLocal area
CMCI
Ashburn, VAa month ago - ...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...Flexible hours
Trinity ES LLC
Chantilly, Loudoun County, VA2 days 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...Contract workRemote work
SECURIPORT
Reston, VA10 days ago - ...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 workRemote work
SECURIPORT
Reston, VA17 hours ago - ...Job Title We are seeking an experienced User Interface (UI) Developer to lead the design and development of scalable, responsive UIs... ...practices Collaborate with backend developers to integrate RESTful APIs and microservices Own and implement scalable front-end...Immediate start
Novul Solutions
Ashburn, VA2 days ago - ...infrastructure tasks (SSL certificates, deployments) Tech Stack Primary:.NET, C#, Windows desktop (WinForms / WPF) Adjacent: SQL, REST APIs, data feeds & integrations, SSL/TLS What We're Looking For • 3+ years of .NET development experience • Patience for...
C2 Essentials
Ashburn, VA2 days ago - ...(TS/SCI w POLY REQUIRED) Software Tester / QA Engineer (Web & API Testing) We are seeking a detail-oriented and technically skilled... ...as Postman and Swagger to test, document, and validate APIs Develop and maintain automated test scripts using frameworks such as...
Falls Technology
Chantilly, Loudoun County, VA21 days ago - ...Full Stack Java Developer (Mid-Level) We are seeking a Full Stack Java Developer (Mid-Level) to support a high-impact federal program... ...technologies: Kafka, ActiveMQ, SQS, SNS Web services and REST API development In-memory data stores: Redis, Memcached, Elasticache...Immediate start
Novul Solutions
Ashburn, VA3 days ago $110k - $150k
...Job Title: API developer with Tenable Location: McLean, VA Type: Contract To Hire Compensation: $110,000.00 - $150,000.00 Contractor Work Model: Hybrid - onsite and remote Responsibilities Develop and maintain custom connectors between Tenable and internal...Full timeContract workFor contractorsLocal areaRemote workSystem One
McLean, VA2 days ago$112.8k - $173.6k
...evolving business needs. This could be something as simple as developing a Mustache email template library for streamlined responses, or... ...Points if you have: Experience working with various vendor APIs (or netconf) including Nokia, Juniper, Fujitsu, Infinera, Cisco...Work experience placementLocal areaRemote workNight shiftZayo Group
Ashburn, VA3 days ago- ...currently seeking a motivated, career and customer oriented Mobile Developer (Senior) to join our team to continue an exciting and... ...build Pipelines for mobile targets. Understanding how REST APIs work. Understanding of Micro Service Architecture. Unit Test...
Science Applications International Corporation
Ashburn, VA17 hours ago $69.4k - $158k
Booz Allen Hamilton in McLean, Virginia, is seeking a Full Stack Software Developer. This role focuses on building and enhancing an integration platform using technologies like .NET and Node.js. Ideal candidates should thrive in collaborative settings and possess diverse...- ...Apply today! Niyam is seeking an experienced Senior Salesforce Developer for one of our federal clients. The Senior Salesforce... ...External Systems - Develop and maintain integrations using REST/SOAP APIs, middleware, and platform events. Collaborate with...Contract workLocal areaRemote workFlexible hours
NiyamIT Inc.
Ashburn, VA4 days ago
