Concept Solutions, LLC (CS) is seeking an experienced
Senior Integration Engineer to support a mission-critical application modernization program for a Department of War (DoW) customer.
This initiative will modernize and streamline access across a portfolio of production applications by establishing a unified platform with single sign-on, a common user experience, and a repeatable approach to integrating applications.
As a Senior Integration Engineer, you will play a key role in maintaining and enhancing the integration services that connect these applications. You will work with API gateways, legacy interfaces, and modern integration patterns to ensure reliable communication between systems while supporting the continued operation of existing mission-critical applications.
- Maintain privileged access to integration services and API gateways connecting the application portfolio.
- Troubleshoot and resolve integration incidents, defects, and connectivity issues to ensure system reliability and continuity.
- Maintain integration contracts, correlation identifiers, and acknowledgment mechanisms across connected systems.
- Establish and maintain OpenAPI contracts at the platform gateway to standardize existing integrations.
- Support the platform team's data feeds and integration requirements.
- Work with legacy interfaces and existing application integrations to support modernization without disrupting ongoing operations.
Requirements
- 7+ years of experience in integration engineering, including REST APIs, OpenAPI specifications, API gateways, and message-based or Change Data Capture (CDC) integration patterns.
- Demonstrated experience working with legacy interfaces and integrating systems developed by other teams or vendors.
- Ability to troubleshoot complex integration issues and support production application environments.
Preferred Qualifications
- Experience with Envoy, Debezium, MuleSoft, or similar integration technologies.
- Current favorably adjudicated Tier 5 investigation or active Top Secret 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, Monday through Friday, with core hours of 9:00 a.m. to 3:00 p.m. Eastern. Work follows two-week sprints, with a customer demonstration each sprint.
Travel: 0-10%, within the Washington, DC metropolitan area.
Security Requirement: U.S. citizenship required. This is a privileged-access role. Candidates must hold a current favorably adjudicated Tier 5 investigation, hold a Top Secret clearance, or be eligible to obtain one. An active clearance may allow an earlier start.
Compensation: $170,000-$180,000 annually, depending on experience.
This position is contingent upon contract award, with an anticipated start in October 2026.
