Concept Solutions, LLC (CS) is seeking a
Java Software Engineer to support a mission-critical application modernization program for a Department of War (DoW) customer. This position is contingent upon contract award, with an anticipated start in October 2026.
This program is focused on creating a unified experience across multiple production applications through single sign-on, a common work surface, and a scalable approach to integrating applications into a shared platform.
The successful candidate will help maintain and support existing Java applications while ensuring stability, reliability, and continuity throughout the modernization effort.
- Troubleshoot and resolve defects in Java Spring Boot applications.
- Develop and implement patches in accordance with the customer's established release schedule.
- Maintain existing applications while supporting the transition to a modernized platform.
- Ensure the stability of a legacy application through its planned retirement, without introducing enhancements.
- Document legacy application capabilities to support the successor system.
- Review, understand, and safely modify unfamiliar codebases.
Requirements
- 3+ years of experience working with Java, Spring Boot, and SQL.
- Demonstrated ability to understand, troubleshoot, and modify existing application code safely.
Preferred Qualifications
- Experience with Amazon ECS/Fargate and AWS GovCloud.
- Active Secret security clearance.
Work Location and Schedule
- Location: Hybrid - Reston, VA headquarters and approved remote locations within the United States, with on-site work at Government facilities in Northern Virginia and Maryland as required. Government-furnished equipment is used for all access to Government environments.
- Schedule: Full-time, 40 hours per week, Monday through Friday, with core hours from 9:00 a.m. to 3:00 p.m. Eastern. Work follows two-week sprints, including a customer demonstration each sprint.
- Travel: 0-10%, within the Washington, DC metropolitan area.
- Security Requirement: U.S. citizenship required. Must be eligible to obtain and maintain a DoD security clearance. An active Secret clearance or higher is strongly preferred and may allow an earlier start.
- Compensation: $130,000-$150,000 base salary, depending on experience.
Benefits: Concept Solutions offers a competitive benefits and salary package you would receive from a large company. We offer health, dental, vision and life insurance, as well as a comprehensive 401(k) plan with matching and immediate vesting.
