Concept Solutions, LLC (CS) is seeking a
React Software Engineer to support a mission-critical application modernization program for a Department of War (DoW) customer.
This role offers an opportunity to help modernize and sustain production applications while improving how users access and interact with essential systems. The program is focused on creating a unified platform that provides single sign-on, a consistent user experience, and a repeatable approach to integrating existing applications-all while maintaining operational continuity.
The ideal candidate brings hands-on React development experience, strong front-end troubleshooting skills, and familiarity with structured software release processes.
- Front-End Development and Application Sustainment
- Troubleshoot and resolve front-end defects across two React applications, including a small public-facing single-page application supported by a Redis-backed service.
- Support ongoing maintenance and sustainment of production applications to ensure reliability and functionality.
- Support embedded-adapter integration that enables legacy application functionality to operate within the modernized platform shell.
- Collaborate with the development team to maintain application stability while supporting modernization efforts.
- Participate in two-week Agile sprints, including customer demonstrations at the conclusion of each sprint.
Requirements
- Minimum of 3 years of professional front-end software engineering experience using React.
- Experience working within formal software release processes.
Preferred Qualifications
- Experience working with Java-based back-end systems.
- Familiarity with accessibility testing.
- Active Secret security clearance.
Work Location and Schedule
- Location: Hybrid. Work may be performed at CS headquarters in Reston, Virginia, and approved remote locations within the United States. On-site support at government facilities in Northern Virginia and Maryland is required as needed.
- Schedule: Full-time, 40 hours per week, Monday through Friday, with core hours of 9:00 a.m.-3:00 p.m. Eastern.
- Development Cadence: Two-week sprints with customer demonstrations 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 DoW security clearance. An active Secret clearance or higher is strongly preferred and may allow an earlier start.
- Compensation: $100,000-$120,000 base salary, depending on experience.
- Government-furnished equipment will be used for all access to government environments.
- This position is contingent upon contract award, with an anticipated start in October 2026.
BenefitsConcept 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.
