Backend Software Engineer

Leidos is seeking a Backend Software Engineer to design, develop, and maintain scalable backend services and REST APIs for a high-visibility data analytics application. This onsite role is based in Alexandria, VA, and emphasizes Java or Python development within Linux environments while coordinating with mission stakeholders. The position offers a salary range of USD 107,900 to 195,050 per year and requires a Master’s degree with 6–10 years of related experience.

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

Requirements

• 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

Technologies

• Java, Python, Spring Boot, Django, PostGIS, Apache Airflow, GitLab, Jenkins, Docker, OpenShift, Kubernetes, AWS, Azure, Linux, SQL

Benefits

• competitive compensation
• Health and Wellness programs
• Income Protection
• Paid Leave
• Retirement

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