Back End Developer jobs in Tysons

The Senior GenAI Backend Platform Developer contributes to the development of robust, scalable GenAI backend software solutions, from cloud infrastructure to backend API integrations to agentic workflows and MCP servers, supporting a cutting-edge generative AI regulatory chat assistant. Working unde

*Zachary Piper Solutions** is seeking a *UI Front-End Developer** to support our client in *Ashburn, VA.** The UI Front-End Developer will build single‑page applications using modern JavaScript frameworks, create reusable component libraries, and collaborate within an Agile team to design, develop,

Cognitive Medical Systems, Inc.

$8,333 - $11,667 /year

*About Cognitive:** Cognitive is an IT and software engineering services company dedicated to elevating the quality, speed and delivery of today’s US government healthcare programs. With a wealth of clinical expertise and hands-on experience, our team understands the significant challenges our gover

Description This position can be 100% remote anywhere in the US. As a Senior Software Developer at ICF, you play the central role in driving innovation and using technology to drive connections through multi-channel experience. If you have an incredible passion for innovative technology development

Booz Allen Hamilton

Requirements Must have: - Experience in developing high-quality front-end applications using JavaScript, HTML5, CSS/SCSS, and a JavaScript framework (Vue, React, Angular, or Next) - Understanding of WCAG 2.x, Section 508 compliance, responsive design, and front-end best practices within secure gover

Job Description SALARY RANGE $209,000 - $266,000/year DUTIES As a successful candidate for the Front-End Developer III role, you will take a lead role in a new development initiative by designing and implementing user interfaces, integrating UI functionality with backend APIs and databases, collabor

A company is looking for a Mid-level Go Backend Developer to join the Air team. Key Responsibilities Develop new features and participate in product planning and task decomposition Work with legacy code and reduce technical debt through refactoring Write unit and integration tests and engage in cros

Black Canyon Consulting LLC

Overview Black Canyon Consulting (BCC) is searching for a Front-End Developer to build and support dynamic applications with complex data flows for our public sector clients. BCC is a company of technologists, scientists, analysts, engineers, and consultants. Our clients trust us to maintain the inf

Your Impact Own your opportunity to serve as a critical component of our nation’s safety and security. Make an impact by using your expertise to protect our country from threats. Job Description GDIT is your place. You make it your own by embracing autonomy, seizing opportunity, and being trusted to

Overview BigBear.ai is seeking a Mid-Level Back End Developer to build, enhance, and support backend systems and APIs. This role involves independently contributing to development tasks while also partnering closely with product and DevOps teams. What You Will Do Develop, improve, and maintain scala

Rocket Communications

Want to work on the apps used for space capabilities and cutting-edge technologies? Yes, we said space! Rocket Communications is an enterprise UX Design company focused on designing mission-critical applications and systems. We are seeking a DC-area Sr. Front End Developer who has an active Top Secr

CVS Health

Were building a world of health around every individual — shaping a more connected, convenient and compassionate health experience. At CVS Health, youll be surrounded by passionate colleagues who care deeply, innovate with purpose, hold ourselves accountable and prioritize safety and quality in ever

Description & Requirements Maximus is a trusted federal partner supporting mission‑critical programs across national security, defense, and public service delivery. Recent contract awards in cybersecurity and operational readiness underscore Maximus’ role as a reliable prime for high‑impact governme

Information Technology Senior Management Forum

$12,258 - $15,383 /year

Posted Date 4/03/2026 Description Senior Software Engineer, Back End/Full Stack (Docker/Containerization, Python on AWS, React, API Dev + CI/CD) Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and

About Arbor Arbor helps renters, homeowners, and small businesses pay less for electricity. Behind the scenes, Arbor is building an intelligent electricity marketplace to power an abundant electric future. As AI data centers drive a surge in electricity demand, millions of homes and businesses remai

Ad Hoc LLC

This is a remote position. Ad Hoc is a technology company that empowers organizations to deliver scalable, impactful digital services. Using modern, agile methods, our team creates products that meet people’s needs and transform their experience of government. Principal Software Engineer - Back End

MTS Moose Tech Solutions

PLEASE READ THOROUGHLY TO AVOID REJECTION Open to both 1099 and W2 candidates. NO C2C. Hybrid reporting to Vienna, VA , San Diego, CA , Winchester, VA , or Pensacola, FL . Experience Required : Minimum 5 years of experience in developing dynamic, highly interactive user interfaces. Role Overview The

Description & Requirements Maximus is a trusted federal partner supporting mission‑critical programs across national security, defense, and public service delivery. Recent contract awards in cybersecurity and operational readiness underscore Maximus’ role as a reliable prime for high‑impact governme

Senior Software Engineer, Back End/Full Stack (Docker/Containerization, Python on AWS, React, API Dev + CI/CD) Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment? At

***AWARD PENDING*** The JCO Development and Sustainment contract will provide rapid capability development and operational readiness leveraging industry best-practices and innovative solutions to ensure Joint Cyber Command and Control (JCC2) meets operational requirements and matures existing govern