Senior Software Engineer - Go (Golang) Enhancement Lead

Reston, VADescriptionConcept Solutions, LLC is seeking a Senior Software Engineer – Go (Golang) Enhancement Lead to lead a small engineering team responsible for enhancing, modernizing, and sustaining mission-critical applications supporting a Department of War (DoW) customer.This is a hands-on technical leadership opportunity for an experienced Go developer who enjoys mentoring engineers, driving technical decisions, and delivering reliable software enhancements in a secure, mission-focused environment.Lead a small engineering team delivering new capabilities to production Go and React/TypeScript applications, from technical design through deployment.Own technical design, code review standards, and release readiness for the team's development backlog.Partner with Government product owners to shape requirements, establish priorities, and deliver enhancements aligned with mission needs.Ensure changes to live, mission-critical applications are delivered safely through automated testing, feature flags, and rehearsed rollback plans.Mentor engineers, promote software engineering best practices, and maintain high standards for code quality.Collaborate closely with sustainment, security, and platform teams to support reliable application delivery.Requirements7+ years of backend software engineering experience, including at least 3 years developing production services using Go (Golang).Strong experience with SQL, particularly PostgreSQL, and REST API design.Demonstrated experience leading a small engineering team through technical design, code reviews, and software releases in an Agile development environment.Preferred QualificationsExperience with React and TypeScript.Familiarity with containerized deployments using Amazon ECS or Kubernetes.Experience working with AWS GovCloud.Experience delivering software in federal or other regulated environments with formal change control processes.Active Secret security clearance.Work Location and ScheduleLocation: 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 of 9:00 a.m. to 3:00 p.m. Eastern. The team operates in 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 DoW security clearance. An active Secret clearance or higher is strongly preferred and may allow an earlier start.Compensation: $170,000–$180,000 base salary, depending on experience.This position is contingent upon contract award, with an anticipated start in October 2026.Company Profile: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.For over 25 years, CS has been a trusted partner for the Federal Aviation Administration (FAA), Department of Homeland Security (DHS), Department of Justice (DOJ), Department of Defense (DoD) and other federal agencies delivering vital IT, security, and project management services.Our commitment to excellence is reflected in our adherence to CMMI-DEV ML3, ISO 9001:2015, ISO/IEC 20000-1:2018, and ISO/IEC 27001-1:2013 standards. CS boasts company highlights that include:Over two decades of experience across over $300 million in contract awards supporting critical FAA programsMultiple contract vehicles providing opportunities across FAA, DoD, NOAA, and other Federal agenciesInnovation Council - CS maintains an active Internal Research and Development (IR&D) program that is geared towards identifying emerging technologies and pursuing technological innovationsAt CS, we know our success stems from our talented team. That’s why we prioritize the wellbeing and growth of our employees, fostering a positive culture centered on innovation, engagement, and career development.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.Concept Solutions is an Equal Opportunity Employer, and we value workplace diversity. We invite resumes from all interested parties and consider applicants for all positions without regard to race, color, religion, sex, national origin, age, marital status, sexual preference, personal appearance, family responsibility, the presence of a non-job-related medical condition or physical disability, matriculation, political affiliation, veteran status, or any other legally protected status. Concept Solutions is a VEVRAA federal contractor, and we request priority referral of veterans for available positions.