Backend Software Engineer
Leidos
Backend Software Engineer
If you've spent the last few years building your expertise in backend engineering, Java or Python development, and mission-driven systems, and you're ready for work that actually moves the needle, this is the kind of opportunity cleared engineers pursue when they want real impact. If you take pride in your craft, write your own résumé, and deliver results that senior leaders actually see, you'll thrive here.
We're hiring a Backend Software Engineer to support a high-visibility application relied on across the organization for data analysis, reporting, and operational decision-making. You'll design and build scalable backend services, develop RESTful APIs, integrate complex data sources, and ensure system reliability and performance in a Linux-based environment.
Our primary development team operates out of Gaithersburg, MD, but we also support onsite engineers in Alexandria, VA; Chantilly, VA; Aurora, CO; St. Louis, MO; and Tucson, AZ, giving top talent multiple paths to join the mission.
And while the requisition requirements may seem standard fair, the position is not; as it will join a high performing team that is changing the way digital engineering and mission operations intelligence is enabled for our customer.
Why This Role Stands Out
- High Impact: Your services power a widely used application that drives real-time decisions
- High Visibility: Collaborate directly with engineering teams and mission stakeholders
- Career Growth: Deepen your expertise in backend architecture, API design, and scalable systems
- Challenging Work: Build and optimize complex backend features
Key Responsibilities
- Backend Development: Design, develop, test, and maintain backend services using Java or Python
- REST API Development: Design and implement RESTful services to support application functionality and integrations
- Object-Oriented Design: Apply strong object-oriented design principles to build scalable and maintainable systems
- Database Development: Write and optimize SQL queries to support application functionality and performance
- Data Source Integration Coordination: Coordinate with external teams to understand data sources, interfaces, and access patterns, and translate requirements into backend integrations
- System Design Contribution: Participate in technical design discussions and contribute to backend architecture decisions
- Linux Environments: Develop, deploy, and troubleshoot applications within Linux-based environments
- System Troubleshooting: Diagnose and resolve issues across application and database layers
- Code Quality & Best Practices: Participate in code reviews and ensure adherence to engineering standards
Basic Qualifications
- Bachelor's degree in Computer Science, Software Engineering, or a related field with 8–12 years of experience; or a Master's degree with 6–10 years of experience
- U.S. Citizenship
- Active TS/SCI clearance with the ability to successfully pass a Polygraph
- Strong professional experience developing backend applications in Java or Python
- Proven ability to design and develop RESTful APIs that support scalable application functionality
- Solid SQL experience, including writing and optimizing queries across relational databases
- Confident working in Linux-based environments
- Ability to work independently and drive solutions to moderately complex and complex technical challenges
Preferred Qualifications
- Experience with Apache Airflow or similar workflow orchestration technologies
- Experience with geospatial data and querying (e.g., PostGIS)
- Experience with Spring Boot, Django, or similar backend frameworks
- Experience with CI/CD pipelines (GitLab, Jenkins, etc.)
- Familiarity with containerization (Docker, OpenShift, Kubernetes)
- Exposure to cloud environments (AWS or Azure)
- Experience working in Agile development environments
$145k - $190k
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...Full Stack Web Developer to join our team. This role will perform software application development in support of an enterprise-wide data... ...management best practices. Experience with front and backend software development. Familiarity with Unix based command line...Full timeFlexible hours- ...BT-277 - Full Stack Software Developer (React/Typescript/Python/AWS/Linux) Location:... ...The Developer works with the Lead Engineer and fellow team members to design, develop... ...application, including fronted user interfaces, backend application services, and data layers....For contractorsRemote workFlexible hours
- ...implement both the client-facing and server-side aspects of our software. If you enjoy solving complex problems, collaborating with... ...family. *** SIMILAR CAREER TITLES Software Engineer, Backend Developer, Frontend Developer, Web Developer, Application Developer...Temporary workFor contractorsImmediate startFlexible hours
- ...js and other technologies to develop the backend, while also ensuring the frontend... ...designers, and developers to deliver superior software solutions. Implement responsive design... ...junior developers, and enhancing engineering and procedural standards. Qualifications...Work at officeFlexible hours
- Job Description SysAdmin/Back End Developer Required Skills Required: ~3+ years of experience with systems administration. ~ Bachelor's degree in Systems Administration, Computer Information Systems, or Computer Science, or 5+ years total of experience...Temporary workFor contractorsLocal areaImmediate startFlexible hours
$130.2k - $265.3k
...other project deliverables. Provide support for designing, engineering, implementing, and maintaining on-prem enterprise quality mission... ...like Vue or Angular). ~ Python (or another modern backend language) for backend services and RESTful SQL and/or NoSQL databases...Live inWork at officeLocal areaFlexible hours- ...align with your skillset and career goals. We look forward to you joining our family. *** Similar Career Titles: Software Developer, Full Stack Engineer, Web Developer, Application Developer, Back End Developer, Front End Developer, .NET Developer, C# Developer, Cloud...Temporary workFor contractorsImmediate startFlexible hours
$86.8k - $198k
...environment. If you're looking for the chance to not just develop software, but to create a system that will make a difference, we need... ...~ Bachelor's degree and 2+ years of experience in software engineering, or 5+ years of experience in software engineering in lieu of...Full timeContract workPart timeLocal area- Introduction A career in IBM Consulting is built on long-term client relationships and close collaboration worldwide. You’ll work with leading companies across industries, helping them shape their hybrid cloud and AI journeys. With support from our strategic partners...Worldwide
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$160k - $175k
...have current/recent experience working across the cloud-based software development lifecycle designing and implementing data layer, application... ...(front end, back end, database). Work closely with Chief Engineer and Technical Leads to translate requirements into user stories...For contractorsLocal areaRelocation package- ...access management (PAM) tools. • Demonstrated understanding of software development best practices, including version control, testing... ...Computer Science, Computer Information Systems, or Computer Engineering with (10) years of experience executing software development...Full timeWork experience placement
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...Experience with web development and best practices in Microsoft SharePoint using SharePoint Designer Knowledge of Agile software development Knowledge of SQL and experience working with various relational database managements systems Familiarity with...Full timeContract workWork experience placementLocal areaFlexible hours
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