Sustainment Lead

Concept Solutions, LLC (CS) is seeking an experienced Sustainment Lead to support a mission-critical application modernization program for a Department of War (DoW) customer.

This program is focused on modernizing and streamlining access across a portfolio of production applications through a unified sign-on experience, a shared work environment, and a repeatable framework for onboarding applications to a common platform.

The Sustainment Lead will provide strategic and operational leadership to ensure existing applications remain secure, stable, and available throughout modernization. This individual will oversee Tier 3 sustainment activities, lead cross-functional technical teams, manage application releases, and maintain strong customer relationships.

• Lead Tier 3 sustainment operations across a portfolio of production applications from day one, ensuring operational continuity and service reliability.
• Establish and maintain the issue register, customer-approved release calendar, on-call rotation, operational runbooks, and monthly reporting required to support milestone acceptance.
• Oversee the eApp, IEP/PDT, integration, and operations squads, ensuring coordination across teams and effective resolution of technical issues.
• Prioritize defects, patches, and application releases while maintaining availability at or above the documented baseline.
• Assume responsibility for the customer sustainment relationship from the Transition Lead following the Phase 1 exit.
• Ensure sustainment activities follow established change-control processes and customer requirements.

• 10+ years of experience in application sustainment or engineering management supporting Federal production systems that handle sensitive data.
• Demonstrated experience leading Tier 3 technical support and sustainment teams across multiple applications.
• Strong understanding of formal change-control processes, application release management, and production operations.
• Hands-on experience using Jira and Service Now for issue tracking, incident management, and operational coordination.
• Proven ability to manage cross-functional technical teams and maintain effective customer relationships.

• Experience supporting Java and Go (Golang) application environments.
• Familiarity with cloud-hosted containerized applications.
• Active Secret security clearance;
  Top Secret preferred.

• Location:
  
  Hybrid. Based at CS headquarters in Reston, VA, and approved remote locations within the United States, with on-site work at Government facilities in Northern Virginia and Maryland as required.
• 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, including a customer demonstration during 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: $200,000–$225,000 base salary, depending on experience.

This position is contingent upon contract award, with an anticipated start in October 2026.

Founded in 1999 and headquartered in Reston, Virginia, Concept Solutions, LLC (CS) is a leading small business in technology, engineering, and management consulting. We are the innovative and agile force behind strategic solutions that enhance organizational efficiency and safeguard our nation across Aerospace, Defense, and National Security sectors.

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