Mid-Level 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 a motivated and skilled Software Engineer (T3) to support the development and delivery of scalable software solutions within our engineering organization. This role focuses on implementing high-quality code, supporting system functionality, and contributing to team-based software development efforts. The ideal candidate possesses strong object-oriented programming fundamentals, backend development experience, and the ability to work effectively within a collaborative engineering environment. This individual will contribute to software enhancements, troubleshoot issues, and support ongoing development activities across the software development lifecycle. Clearance Level Required: TS/SCI, and ability to obtain a Polygraph. Primary Responsibilities: Object-Oriented Programming: Develop, test, and maintain software applications using object-oriented design principles. REST API Development: Implement and support RESTful services under established architectural guidance. Database Development: Write and maintain SQL queries; support database updates and data validation efforts. Linux Environments: Develop and troubleshoot applications within Linux-based environments. Bug Fixing & Enhancements: Identify, debug, and resolve application-level defects and performance issues. Team Collaboration: Work closely with senior engineers and team members to implement approved designs and deliver project requirements. Code Quality: Follow established coding standards, participate in code reviews, and support documentation efforts. . Basic Qualifications: US citizenship is required per contract. Bachelor’s degree in Computer Science, Software Engineering, or related field with 4–8 years of relevant experience or Master’s degree with 2–6 years of relevant experience. Java or Python: Professional experience developing object-oriented applications. REST APIs: Experience developing or maintaining RESTful services. SQL: Experience writing queries and working with relational databases. Linux: Working knowledge of Linux environments. Ability to work independently on defined tasks within established technical frameworks. Preferred Qualifications: JavaScript: Exposure to front-end development. GitLab CI/CD: Experience working within CI/CD pipelines. Containerization: Familiarity with Docker or OpenShift. Exposure to cloud-based environments. Experience with modern web frameworks. Experience with Spring Boot, PostgreSQL, Tomcat, or Maven. Experience working in Agile development environments. 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 $87,100.00 - $157,450.00 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, Bethesda , Mid-Level Software Engineer, IT / Software / Systems , Gaithersburg, Maryland