Backend Developer Jobs in Maryland, United States

Quevera's Backend Software Development team builds secure backend solutions for critical national security missions. The role designs, develops, tests, and maintains backend applications while collaborating with engineers and stakeholders in an Agile environment.

Legato (Software Engineering) builds mission‑critical backend systems for government clients. The Backend Software Developer designs, develops, tests and maintains backend applications, creates test procedures, writes technical documentation and collaborates in Agile ceremonies.

Quevera is seeking a highly skilled Backend Software Developer – AWS with an active TS/SCI clearance with Polygraph in Annapolis Junction, Maryland . This role requires backend software development experience supporting software testing, technical documentation, quality control, and development within an Agile environment using AWS and related development technologies.

Principal Backend Software Engineer at Red Arch Solutions, a federal contractor focused on secure, high‑performance systems. The role leads design, implementation, and testing of backend services in Java, C++, or Python, ensuring code quality and documentation in an Agile environment.

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

Secure the Enterprise initiative at Quevera builds secure backend services for mission-critical programs. Senior Backend API Engineer designs, develops, tests, and deploys Python‑based RESTful APIs and microservices using Django and Flask, integrating MariaDB and MongoDB, and containerizing with Docker.

Software Engineering team at ELEVI Associates builds and maintains backend systems for federal and commercial clients. The Mid Level Backend Software Engineer designs, develops, and integrates backend database architectures, writes code in JavaScript, C++, Python, and Ruby, and supports DevOps pipelines on AWS and Docker.

Senior Staff Software Engineer (Backend) leading re-architecture of GEICO’s billing platform. Designs scalable, high-performance systems using Java, Kotlin, Golang, SQL, NoSQL, Kafka, Spark, Airflow, cloud, DevOps, observability.

Software Engineering team at Visionist builds specialized tools for mission-critical intelligence operations. The role develops data transforms, enhances application performance, and supports mission-critical servers while collaborating directly with analysts and customers.

The Backend Data Validation and Performance Test Engineer will be responsible for validating and assessing large-scale backend data systems to ensure accuracy, integrity, reliability, and high performance across CMS enterprise applications. This role requires strong expertise in backend database testing, ETL validation, big-data ecosystems, performance benchmarking, and cross-system data comparison between backend outputs and frontend/UI results.

CACI is hiring a Dataflow Engineer to build reliable, efficient, and scalable dataflows supporting mission-critical operations. Day-to-day work involves hands-on Apache NiFi configuration, deployment, and maintenance of workflows and clusters, partnering with data providers and consumers, troubleshooting escalated tickets, and improving automation and reliability.

At Intelliforce, we build software that helps analysts make sense of large, complex data sets and turn that information into something they can act on. In this role, you will join the team responsible for developing the backend services and processing capabilities.

Visionist has an exciting new, fully FUNDED opportunity for a Full-Stack Software Engineer with a focus on the backend on our PRIME contract. You will be joining an exciting mission centered around providing visualization and presentation services for the prototyping, development, and production of analytic tools.

Quevera is seeking a highly skilled Senior Backend Software Engineer with an active TS/SCI clearance with Polygraph in Annapolis Junction, Maryland . This role supports the design, development, testing, deployment, maintenance, and enhancement of backend software solutions.

Application Engineer (Backend) on CACI’s security transformation team. Builds and maintains Python REST microservices with Django/Flask, interacts with MongoDB/MariaDB, and delivers JSON to front‑end UI. Works in Linthicum, MD, onsite with a focus on automation and continuous monitoring.

DRS RADA Technologies is seeking a full-time, on-site Senior Software Engineer to design, build, and evolve Linux-based, mission-critical software supporting advanced radar and defense solutions. This hands-on role is ideal for a systems-oriented experienced engineer who can translate complex requirements into reliable, secure, and maintainable software while helping shape technical direction and development practices.

Bcore’s Mission Services division builds tailored backend solutions for NGA missions, fusing cloud, DevSecOps, and software engineering to modernize government operations. As a Mid‑Level Backend Software Engineer, you design, develop, and maintain Java/Python REST APIs, write SQL queries, and integrate data sources in Linux environments, ensuring scalable, secure services.

ProSidian Consulting seeks an experienced eLearning Developer to design and deliver digital training for the Department of Energy’s EHSS. The role involves creating interactive modules on classification, CUI, and UCNI, updating content, and supporting professional services across the Energy, Resources, and Industrials sector.

Global Development Medical Director leading late-stage respiratory and immunology clinical development at AstraZeneca. Provides medical and scientific leadership for Phase IIb‑IV trials, designing, executing, and interpreting pivotal studies.

ProSidian Consulting seeks an eGuidance Developer to support the Department of Energy’s Office of Environment, Health, Safety and Security. The role focuses on developing, maintaining, and quality‑checking XML‑based eGuidance tools that guide DOE classification and policy decisions.