Senior Software Engineer

Company: Leidos
Location: Gaithersburg
Posted on: April 1, 2026

Job Description:

Leidos Intelligence Sector combines technology-enabled services and mission software capabilities in the areas of cyber, logistics, security operations, and decision analytics to support our defense and intel customers’ mission to defend against evolving threats around the world. Our team’s focus is to ensure our customers have the right tools, technologies, and tactics to keep pace with an ever-evolving security landscape and succeed in their pursuit to protect people and critical assets. Geospatial Analyst Solutions Directorate, part of the National Solutions Business Area, is currently seeking an experienced Software Engineer for the Maru Program. The Maru Program delivers mission-critical, modern software solutions across our customer’s enterprise using Agile, DevSecOps, and cloud-native methodologies. We are seeking an experienced Full-Stack Software Engineer to contribute to the design, development, and delivery of scalable software solutions within our engineering organization. This role is responsible for implementing high-quality software across the full stack while collaborating with cross-functional teams to deliver reliable and maintainable systems. The ideal candidate possesses strong object-oriented programming expertise, backend development experience, and the ability to contribute to front-end and DevOps efforts as needed. This individual will work independently on complex technical tasks while supporting overall team objectives and solution delivery. Clearance Level Required: A current and active TS/SCI clearance with the ability to obtain a Polygraph is required, for consideration. Primary Responsibilities: Object-Oriented Programming: Design, develop, test, troubleshoot, and maintain scalable software applications using object-oriented design principles. REST API Development: Implement and maintain RESTful services to support application functionality and integrations. Database Development: Develop and optimize SQL queries; contribute to database schema updates and performance improvements. Linux Environments: Develop, deploy, and troubleshoot applications within Linux-based environments. System Troubleshooting: Diagnose and resolve technical issues spanning application and database layers. Solution Design Collaboration: Contribute to technical design discussions and support implementation of approved architectures. Cross-Functional Collaboration: Partner with engineers and stakeholders to translate requirements into effective technical solutions. Code Quality & Best Practices: Participate in code reviews and support adherence to established engineering standards. Basic Qualifications: US citizenship is required per contract. Bachelor’s degree in Computer Science, Software Engineering, or related field with 8–12 years of relevant experience or Master’s degree with 6–10 years of relevant experience. Java or Python: Professional experience designing and implementing object-oriented applications. REST APIs: Experience developing and maintaining RESTful services. SQL: Strong experience writing and optimizing queries within relational databases. Linux: Working knowledge of Linux environments for development and deployment. Experience working on moderately complex technical projects with minimal supervision. Preferred Qualifications: JavaScript: Experience developing front-end functionality. GitLab CI/CD: Experience working with CI/CD pipelines. Containerization: Familiarity with Docker or OpenShift. Experience with Spring Boot, PostgreSQL, Tomcat, or Maven. Experience working in Agile development environments. Experience deploying and supporting applications in AWS environments. Experience with modern web frameworks. MARU If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares. Original Posting: March 17, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: Pay Range $107,900.00 - $195,050.00 The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Keywords: Leidos, Chantilly , Senior Software Engineer, IT / Software / Systems , Gaithersburg, Virginia