Backend Developer jobs in Ashburn

Maxiom Technology

Do you like writing mean and clean Ruby code? Come and join our team and help us build amazing things for our clients. We are looking for mostly a backend developer, but if you are fullstack that works too. We’re looking for someone with a passion for programming and for writing beautiful code. You

The Swift Group is a privately held, mission-driven and employee-focused services and solutions company headquartered in Reston, VA. Our capabilities include Software Development, Engineering & IT, Data Science, Cyber Enablement, Logistics, and Training. Founded in 2019, Swift supports Civilian,

Electrify America is committed to revolutionizing the way people charge. As the country's largest open DC fast charging network, Electrify America is actively contributing to electrifying mobility today and building a more sustainable future. At Electrify America, we value innovation, collaboration,

Job Title: Back-End Java Engineer (Mid–Senior Level) Location: Vienna, VA (Hybrid – 3 days/week onsite) Work Schedule: Monday–Friday, 8:00 AM – 4:30 PM Experience: 7–10 years Employment Type: Contract Job Description We are seeking a mid-to-senior Back-End Java Engineer to design, develop, test, int

Position Description: CGI Federal is seeking a highly skilled and motivated Backend Developer to join our innovative team. As a Backend Developer, you will be responsible for designing, developing, and maintaining robust and scalable backend systems. You will work closely with front end developers,

Software Developer (Back End) Category: Software Development/ Engineering Main location: United States, Virginia, Fairfax Position ID: J0426-0928 Employment Type: Full Time Position Description: CGI Federal is seeking a highly skilled and motivated Backend Developer to join our innovative team. As a

Knowledge Management, Inc. (KMI) has the leadership and experience to deliver innovative technology, logistics and management solutions to meet real mission requirements. KMI is a Minority Business Enterprise (MBE) and Small Disadvantage Business (SDB) that specializes in Logistics, Warehouse Servic

Network Designs

About NDi Network Designs, Inc. (NDi) is a leading Federal contractor that specializes in designing, developing, and delivering information technology and network solutions for government customers. Founded in 1985, NDi's firmly defined core values have driven all aspects of the business, which have

Knowledge Management, Inc. (KMI) has the leadership and experience to deliver innovative technology, logistics and management solutions to meet real mission requirements. KMI is a Minority Business Enterprise (MBE) and Small Disadvantage Business (SDB) that specializes in Logistics, Warehouse Servic

A technology solutions firm is seeking an experienced Python Developer to join their team in Reston, VA. This hybrid role combines remote and client site work, involving backend platform design, API development, and inter-team collaboration. The ideal candidate should have extensive experience with

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

About Us We’re the world’s leading provider of secure financial messaging services, headquartered in Belgium. We are the way the world moves value – across borders, through cities and overseas. No other organisation can address the scale, precision, pace and trust that this demands, and we’re proud

Vantor is forging the new frontier of spatial intelligence, helping decision makers and operators navigate what’s happening now and shape what’s coming next. Vantor is a place for problem solvers, changemakers, and go-getters—where people are working together to help our customers see the world diff

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

About Us We’re the world’s leading provider of secure financial messaging services, headquartered in Belgium. We are the way the world moves value – across borders, through cities and overseas. No other organisation can address the scale, precision, pace and trust that this demands, and we’re proud

About Us We’re the world’s leading provider of secure financial messaging services, headquartered in Belgium. We are the way the world moves value – across borders, through cities and overseas. No other organisation can address the scale, precision, pace and trust that this demands, and we’re proud

GovCIO

United States Suitability/Public Trust Fully remote Information Technology Overview GovCIO is currently seeking full stack developers with React-Redux and Ruby on Rails development experience to build and test with a cross-functional team dedicated to delivering impactful features on VA.gov. These p

GovCIO

United States Suitability/Public Trust Fully remote Information Technology GovCIO is currently seeking full stack developers with React-Redux and Ruby on Rails development experience to build and test with a cross-functional team dedicated to delivering impactful features on VA.gov. These pivotal ro

Role: Java Backend developer Location: Rockville, MD Duration: 6 months; long-term extensions Work Authorization: Any Interview: 2 rounds; Offer “A senior-level java backend/platform engineering role focused on building AWS-based APIs that serve large-scale big data platforms. Strong experience with

About the job Mid Backend Java Developer Java Developer with experience in developing J2EE applications using REST/JSON, Spring, SpringBoot, J2EE. Designs, develops, and implements web-based Java applications to support business requirements. Follows approved Agile life cycle methodologies, creates