Backend Developer Jobs in Virginia, United States

LT Consulting, LLC is a technology consulting firm headquartered in Northern VA that delivers IT solutions supporting the Intelligence Community's mission needs. The Backend Web Developer will design and build secure, high-performance APIs and backend services, developing scalable microservices, managing data persistence layers, and automating integration processes using cloud-native architectures.

Spatial Front, Inc. seeks a Backend Developer to design and build scalable, secure server‑side applications for Federal Government modernization programs. Responsibilities include developing APIs, managing relational and NoSQL databases, implementing microservices, collaborating with frontend and DevOps teams, conducting unit and integration testing, optimizing performance, and ensuring secure coding practices.

Joomla Backend Developer at Booz Allen Hamilton. Lead technical development and optimization of web platforms, architecting server‑side logic and customizing Joomla components, modules, and plugins.

We’re looking for a Software Engineer who is passionate about building modern, scalable solutions for ingesting and transforming data. This role blends back‑end engineering with data pipeline development and is perfect for someone who enjoys designing modular services and bringing structure to complex data environments.

As a back-end developer, you know that a good site or system needs the right combination of clean code, APIs, analytics, and infrastructure to develop a user-focused solution. We’re looking for a back-end developer with the software engineering skills it takes to help identify potential risks, contribute to solution development, and create efficient and effective systems for our clients.

Company Description Derex Technologies Inc specializes in providing IT consulting, staffing solutions and software services. Globally headquartered in Harrison New Jersey since 1996 Derex delivers the highest quality technology professionals and an array of customized IT talent solutions designed to improve productivity and drive results to global clients throughout North America.

BizFlow is seeking a Senior Backend Developer to build the integrations at the center of a large-scale enterprise modernization program and to serve as a technical leader for our development team. Our platform automates the workflows that run our customers’ operations, and those workflows are only as good as the connections behind them.

Pansophic Learning’s Backend Engineering team builds scalable backend systems that power K‑12 learning solutions. The Backend Engineer designs, develops, and maintains RESTful APIs using Node.js, Express, and AWS services, ensuring high performance and reliability.

Antithesis is reinventing software reliability through deterministic simulation to identify root causes of bugs. The Platform team seeks a Senior Backend Engineer to design and own core infrastructure, APIs, and storage layers from scratch.

Backend Python Engineer role at BTI360 focuses on building mission‑critical data discovery and analysis applications. The team works in a Lean Agile environment, collaborating closely with stakeholders and teammates.

Rune Technologies builds TyrOS, an AI-enabled logistics command and control platform for military sustainment. As a Backend Software Engineer for Simulations, you will own the forecasting workstream, building production-grade simulation and forecasting software that models and predicts logistics outcomes using mathematical models and numerical methods.

Molg is building robotic systems to make electronics manufacturing circular by turning e-waste into resilient supply chains. As a Backend Software Engineer in Sterling, VA, you will design scalable microservices and containerized applications that power robotics platforms.

CaseGuard seeks a Software Engineer - Backend to build REST API microservices and cloud infrastructure for its media redaction platform. The role involves designing scalable APIs with ASP.NET Core, modeling data structures, and optimizing file-processing workers.

Rune Technologies builds mission‑critical AI‑enabled logistics software for the U.S. military. The Backend Software Engineer on the Saga team designs, builds, and deploys production‑grade GenAI systems—RAG architectures, vector databases, LLM integrations, and evaluation harnesses—to bring autonomous capability to the sustainment domain.

Antithesis is reinventing software reliability through deterministic simulation to identify root causes of bugs. The Platform team seeks a Senior Backend Engineer to design and own core infrastructure, APIs, and storage layers from scratch.

Leidos is hiring a Mid-Level Backend Software Engineer to build and maintain core backend services for a high-visibility, data-driven analytics and reporting application used across the organization. Day-to-day work includes designing and developing backend components in Java or Python, building RESTful APIs, applying object-oriented design, writing SQL queries, collaborating on data source integration, and troubleshooting within Linux-based environments to support system reliability, performanc

Rune Technologies builds TyrOS, an AI-enabled logistics command and control platform for military logistics and sustainment. The Distribution team designs and builds backend services that model logistics networks, coordinate movement across nodes and transportation modes, and enable rapid planning and replanning as operational conditions change.

USM Business Systems Inc. builds enterprise IT solutions for government and commercial clients. The Java Backend role develops Spring/Hibernate services and REST APIs.

Swift Enterprise IT team builds mission‑critical backend services and data platforms for defense and intelligence customers. The Backend Software Engineer designs, develops, and maintains scalable Java/Spring Boot APIs, data models, and cloud‑native deployments on AWS, collaborating with cross‑functional teams in an Agile environment.

Data Society Group builds cutting‑edge data and AI training platforms for Fortune 1000 enterprises and government agencies. As a Senior Backend Engineer you will lead microservices architecture, own Azure SQL cache schema, design REST APIs, and govern CI/CD pipelines while directing an offshore engineering pod.