Backend Development jobs in Gaithersburg, MD

Founding Software Engineer (Immidiate Start)

Reston, Virginia

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Today

A Northern Virginia-based start-up is looking for a Founding Software Engineer to join their company, and, if possible, join as soon as possible. Ideal candidates for this position will have previous start-up experience and have had a significant hand in product development. Ideal candidates will spend the majority of their time doing backend development in a Go environment. Candidates will be asked to work hybrid in Northern Virginia. Any exposure to deployment or pipeline development is a plus

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Full-time

$180000 - $200000

Software Development Engineer II - Back-End (Mission-Focused | ArcGIS)

Vienna, Virginia

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Today

Overview Join Esri`s team and build backend systems that power mission critical geospatial applications supporting Defense and Intelligence operations. As a Software Development Engineer II, you will design and develop scalable backend services and APIs that enable complex data processing, system integration, and real time analytics. Your work will directly support high impact operational systems, helping organizations transform large scale data into actionable insights. You will collaborate w

Full-time

USD 97,240.00 - 162,240.00 per year

Software Engineer Level 5

Reston, Virginia

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Today

Requisition ID: 5168Standard Title: Principal Software EngineerRequired Security Clearance: Top Secret/SCI with CI PolygraphLocation: Reston, VAWork Type: On-SiteShift: FirstReferral Eligibility: EligibleU.S. Citizenship Required? Yes Position Summary Base-2 Solutions is seeking a Software Engineer Level 5 to develop, maintain, and enhance complex and diverse software systems supporting mission-focused environments. This role is centered on backend development, data engineering, and API develop

Full-time

Software Engineer Level 4

Reston, Virginia

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Today

Requisition ID: 5165Standard Title: Software EngineerRequired Security Clearance: Top Secret/SCI with CI PolygraphLocation: Reston, VAWork Type: On-SiteShift: FirstReferral Eligibility: EligibleU.S. Citizenship Required? Yes Position Summary Base-2 Solutions is seeking a Software Engineer Level 4 to develop, maintain, and enhance complex and diverse software systems supporting mission-focused environments. This role is centered on backend development, data engineering, and API development, with

Full-time

Software Engineering Professionals - 25k Sign on Bonus

Columbia, Maryland

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Today

Leidos is seeking talented Software Engineers and Software Developers to support our Intelligence Sector's Cyber & Analytics Business Area (CABA). We have multiple opportunities across our Leidos-led prime programs supporting the Intelligence Community in the Fort Meade, Maryland area. We're offering $25,000 sign-on bonuses for these opportunities! Whether your expertise is in Java, Python, Cloud, Artificial Intelligence, Analytics, Front-End, Back-End, or Full-Stack Development, we are intere

Full-time

USD 131,300.00 - 237,350.00 per year

Mid-Level Backend Software Engineer

Gaithersburg, Maryland

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Today

If you've been building your skills in backend development, object-oriented programming, and mission-driven engineering, and you're ready for work that actually moves the needle, this is the kind of opportunity cleared engineers pursue when they want to grow while making real impact. If you take pride in your craft, enjoy solving meaningful technical problems, and want your work to support a mission with visibility at senior levels, you'll thrive here. We're hiring a Backend Software Engineer t

Full-time

USD 87,100.00 - 157,450.00 per year

Senior Full Stack Developer

Hybrid in Washington, District of Columbia

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3d ago

We are seeking an experienced Senior Full Stack Developer to support its Digital Modernization initiative. This role focuses on designing, developing, deploying, and maintaining highly available, secure, and scalable enterprise applications using Microsoft Azure and modern full-stack technologies. The selected candidate will work on mission-critical applications that support internal business operations and public-facing services. The initial project involves enhancing and integrating a public-f

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Full-time

70 - 85

Library Support Backend Developer

Beltsville, Maryland

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Yesterday

One Federal Solution is seeking an experienced Library Support Backend Developer to support the National Agricultural Library (NAL) Library Support System. The successful candidate will be responsible for backend application development, maintenance, modernization, and enhancement of database-driven applications and APIs. This role also includes applying artificial intelligence techniques to extract structured information from diverse scientific publications while supporting the modernization of

Full-time

Software Engineer Level 5

Washington, District of Columbia

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Today

Requisition ID: 5381Standard Title: Principal Software EngineerRequired Security Clearance: Top Secret/SCI with CI PolygraphLocation: Washington, DCWork Type: On-SiteShift: FirstReferral Eligibility: EligibleU.S. Citizenship Required? Yes Position Summary Base-2 Solutions is seeking a Software Engineer Level 5 to develop, maintain, and enhance complex and diverse software systems supporting mission-focused environments. This role is centered on backend development, data engineering, and API dev

Full-time

Software Engineer Level 4

Washington, District of Columbia

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Today

Requisition ID: 5463Standard Title: Software EngineerRequired Security Clearance: Top Secret/SCI with CI PolygraphLocation: Washington, DCWork Type: On-SiteShift: FirstReferral Eligibility: EligibleU.S. Citizenship Required? Yes Position Summary Base-2 Solutions is seeking a Software Engineer Level 4 to develop, maintain, and enhance complex and diverse software systems supporting mission-focused environments. This role is centered on backend development, data engineering, and API development,

Full-time

Senior Front End Developer

Chantilly, Virginia

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Today

Overview We are hiring an experienced Front-End JavaScript Developer to join our software development team in Chantilly, VA. The ideal candidate will have a strong foundation in JavaScript development, experience building modern web applications, and the ability to collaborate with cross-functional engineering teams to deliver scalable, reliable, and user-friendly software solutions. This position requires hands-on front-end development experience, strong problem-solving skills, and an underst

Full-time

USD 180,000.00 - 240,000.00 per year

Software Engineer

Sterling, Virginia

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Today

Job Description We are seeking an experienced Full Stack Developer to join our team! As a Full Stack Developer, you will play a critical role in designing, developing, and deploying sophisticated enterprise computing infrastructure, including web applications, network infrastructure, and cloud services. This is a fast-paced, challenging, and rewarding opportunity to work on a complex and high-profile program. You should have a bachelor's or master's degree and a minimum of 11 years of relevant

Full-time

Founding Engineer / Forward Deployed / Golang

Herndon, Virginia

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Today

An early-stage AI company in Herndon, VA is hiring a Founding Forward Deployed Software Engineer for a full-time position. This is a hybrid opportunity requiring three days per week onsite. You'll work across backend engineering, cloud infrastructure, and customer deployments using Go, Python, Kubernetes, AWS, and PostgreSQL. This role sits directly between the engineering team and the customers using the platform. Rather than simply handing requirements to another team, you'll work with custome

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Full-time

$180000 - $200000

Cleared - Lead UI Software Engineer

Reston, Virginia

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11d ago

ACTIVE SECRET OR TOP SECRET CLEARANCE REQUIREDThe OpportunityStaffRight Associates is recruiting for a premier Aerospace & Defense client based in the Reston, Virginia area. The client needs a Lead UI Software Engineer to head a five-person team of developers and designers. The team builds advanced browser-based platforms for simulation and optimization software that recreates intricate physical systems. The client's engineers work in small, tight-knit groups alongside research scientists and fe

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Full-time

150000 - 175000

PHP/JavaScript Developer

Chantilly, Virginia

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Today

Razor is seeking an experienced PHP/JavaScript Developer to support critical web infrastructure projects for a longstanding customer. This role will develop, enhance, and maintain web applications and websites, working across both front-end and back-end technologies to deliver complete technical solutions. Clearance Requirements ctive TS/SCI with Polygraph required. Location & Work Arrangement Chantilly, VA Key Responsibilities Develop, enhance, and maintain websites and web applications. Wri

Full-time

USD 155,000.00 - 175,000.00 per year

Web Application Developer

Reston, Virginia

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Today

Job ID: 2618095 Location: Reston, VA, US Date Posted: 2026-10-19 Category: Software Subcategory: SW Engineer Schedule: Full-Time Shift: Day Job Travel: No Minimum Clearance Required: TS.SCI_wPoly Clearance Level Must Be Able to Obtain: None Potential for Remote Work: ORA_ON_SITE Description QVine, an SAIC company, is seeking an experienced Full Stack Web Application Developer to join our team. This role involves hands-on technical expertise in building modern, scalable web applications

Full-time

USD 180,001.00 - 220,000.00 per year

Senior Consultant, Full Stack Software Engineer (Node.js/React/Typescript/AWS)

McLean, Virginia

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Today

*Candidates must be local to the Washington D.C. metro area and must possess work authorization which allows them to be hired as a full-time Infinitive employee without the need for Visa sponsorship. About Infinitive: Infinitive is a data and AI consultancy that helps clients modernize, monetize, and operationalize their data to generate lasting value. They pride themselves on their deep industry and technology expertise, ensuring that they drive and sustain the adoption of new capabilities. I

Full-time

USD 85,000.00 per year

Sr. Mobile Developer

Rockville, Maryland

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Today

Senior Mobile Developer SUMMARY: We are seeking a highly skilled Senior Mobile Developer with a minimum of 5 years of experience in iOS and Android app development. The ideal candidate will have a strong background in cross-platform mobile development, using a framework like React Native, and be proficient in a variety of mobile development technologies. Additionally, expertise in back-end technologies, specifically AWS services and API integration, is a strong plus to create robust, feature-r

Full-time

USD 125,000.00 - 155,000.00 per year

Software Engineer Level 5

Elkridge, Maryland

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Today

Requisition ID: 5258Standard Title: Principal Software EngineerRequired Security Clearance: Top Secret/SCI with CI PolygraphLocation: Elkridge, MDWork Type: On-SiteShift: FirstReferral Eligibility: EligibleU.S. Citizenship Required? Yes Position Summary Base-2 Solutions is seeking a Software Engineer Level 5 to develop, maintain, and enhance complex and diverse software systems supporting mission-focused environments. This role is centered on backend development, data engineering, and API devel

Full-time

Software Engineer Level 4

Elkridge, Maryland

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Today

Requisition ID: 5465Standard Title: Software EngineerRequired Security Clearance: Top Secret/SCI with CI PolygraphLocation: Elkridge, MDWork Type: On-SiteShift: FirstReferral Eligibility: EligibleU.S. Citizenship Required? Yes Position Summary Base-2 Solutions is seeking a Software Engineer Level 4 to develop, maintain, and enhance complex and diverse software systems supporting mission-focused environments. This role is centered on backend development, data engineering, and API development, wi

Full-time

Backend Development jobs in Gaithersburg, MD, USA