Leidos invites applications for a Backend Software Engineer to design, build, and maintain scalable backend services in Java or Python, develop RESTful APIs, and integrate data sources within a Linux environment. This onsite role is based in Aurora, Colorado, with a compensation range of USD 107,900 to 195,050 per year.

Responsibilities

Design, develop, test, and maintain backend services using Java or Python
Design and implement RESTful services to support application functionality and integrations
Apply solid object oriented design principles to build scalable and maintainable systems
Write and optimize SQL queries to support application functionality and performance
Coordinate with external teams to understand data sources, interfaces, and access patterns, translating requirements into backend integrations
Participate in technical design discussions and contribute to backend architecture decisions
Develop, deploy, and troubleshoot applications within Linux-based environments
Diagnose and resolve issues across application and database layers
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
Linux
SQL
PostGIS
Spring Boot
Django
Apache Airflow
GitLab
Jenkins
Docker
OpenShift
Kubernetes
AWS
Azure

Benefits

Health and Wellness programs
Income Protection
Paid Leave
Retirement

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

Compensation

Salary range: USD 107,900.00 – 195,050.00 per year

Location

Aurora, CO (onsite)

Security and Compliance

U.S. Citizenship is required. Active TS/SCI clearance with the ability to pass a Polygraph is necessary for this role.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, disability, medical condition, genetic information, pregnancy, family or marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law.

About Leidos

Leidos is a technology and services leader delivering digital and mission-focused solutions to government and commercial clients. Headquartered in Reston, Virginia, Leidos employs tens of thousands of professionals worldwide and pursues innovations across a broad range of sectors. For more information, visit www.Leidos.com.

Backend Software Engineer

Job Description