Senior Java Software Engineer

Leidos has a new and exciting opportunity for a Senior Java Software Engineer in our Intelligence Sector's Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security! Job Summary Build scalable Spring Boot applications, deploy to Kubernetes, and help modernize mission-critical Intelligence systems supporting national security. Leidos is seeking a Java Software Engineer to join an Agile development team responsible for enhancing and modernizing a mission-critical enterprise application. You'll help evolve a high-performance Java platform that processes large volumes of operational data while transitioning to a modern, containerized architecture. Working alongside experienced software engineers, you'll develop Spring Boot services, build RESTful APIs, optimize relational databases, and contribute to Kubernetes deployments and CI/CD automation. This is an opportunity to work across the full software development lifecycle, influence technical direction, and deliver software that directly supports critical Intelligence missions. If you're passionate about backend engineering, modern Java development, scalable architectures, and continuous improvement, you'll find challenging technical work, a collaborative engineering culture, and the opportunity to make a meaningful impact. Primary Responsibilities Design, develop, test, and maintain enterprise Java applications using Spring Boot and modern software engineering best practices. Develop scalable RESTful APIs and backend services supporting mission-critical applications and high-performance enterprise systems. Design, optimize, and troubleshoot relational database solutions using MariaDB and other enterprise database technologies. Support application modernization initiatives through containerization, Kubernetes deployments, and continuous improvements to system architecture. Participate in technical design sessions, architecture discussions, code reviews, troubleshooting, and Agile software development activities. Develop and maintain automated testing solutions and GitLab CI/CD pipelines to improve software quality, deployment efficiency, and operational reliability. Collaborate with cross-functional engineering teams using Jira and Confluence while supporting the complete software development lifecycle. Basic Qualifications Bachelor's degree in Computer Science or a related technical discipline from an accredited college or university. Candidates without Bachelors degrees will require an additional 4 years of software engineering experience. Minimum of twelve (12) years of software engineering experience on programs and contracts of similar scope, type, and complexity. Experience developing Java enterprise applications using Spring Boot or similar modern frameworks. Experience developing RESTful APIs and working with relational databases such as MariaDB, PostgreSQL, Oracle, or similar technologies. Experience with container technologies (Docker or Podman), Kubernetes, or other modern application deployment platforms. Experience working in Agile development environments using Git-based source control, CI/CD pipelines, and automated testing practices. Security Clearance Requirement: Active TS/SCI with Polygraph. ​ Preferred Qualifications Experience developing Angular or other modern web applications. Experience with microservices architecture, application modernization, or cloud-native software development. Experience implementing GitLab CI/CD pipelines and DevSecOps best practices. Experience tuning SQL performance and supporting high-volume enterprise applications. Experience using Jira and Confluence to support Agile software development. Strong troubleshooting, debugging, and problem-solving skills across application, database, and deployment technologies. Experience supporting enterprise software within secure or classified environments. At Leidos, the opportunities are boundless. We challenge our staff with interesting assignments that allow them to thrive professionally and personally. For us, helping you grow your career is good business. We look forward to learning more about you—apply today! conmd KQW 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: July 31, 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 $131,300.00 - $237,350.00 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.