> Markdown version of [/jobs/ext/3806256-principal-software-engineering-lead-enterprise-application-modernization](https://www.wearedevelopers.com/jobs/ext/3806256-principal-software-engineering-lead-enterprise-application-modernization). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Software Engineering Lead - Enterprise Application Modernization - **Company:** Concept Solutions - **Location:** Reston, VA, United States - **Experience:** Expert - **Salary:** $250,000.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Code Coverage, Software Quality, Code Review, Software Engineering, Web Applications, Enterprise Software Applications, ReactJS, Gitlab, Codebase, Golang - **Published:** October 17, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=b451542d92ab0b2a ## About the Role * 12+ years of professional software engineering experience. * 5+ years of experience leading multiple engineering squads delivering enterprise web applications to government customers. * Demonstrated ability to establish and maintain engineering standards across multiple development teams. * Experience providing technical mentorship, facilitating design reviews, and resolving complex engineering challenges. Preferred Qualifications * Experience working with Go (Golang), Java, and React codebases. * Familiarity with GitLab and contract testing practices. * Active Secret security clearance or higher. ## Description Concept Solutions, LLC (CS) is seeking an experienced Principal Software Engineering Lead to provide technical leadership, establish engineering standards, and drive software quality across enterprise application modernization initiatives supporting the Department of War (DoW). In this role, you will guide engineering practices across both sustainment and platform development teams, mentor squad leads, and ensure consistency in software design, development, testing, and release processes. You will play a critical role in aligning technical approaches, resolving cross-team engineering challenges, and maintaining the quality of application integrations with modernized platforms. This is an opportunity for a seasoned engineering leader who thrives in complex enterprise environments and enjoys building high-performing teams while maintaining strong technical standards. Engineering Standards & Quality * Own and establish engineering standards across sustainment and platform development tracks, including coding standards, code reviews, branching and release practices, test coverage expectations, and the definition of done. * Ensure consistent adoption of engineering best practices across development squads. * Maintain accountability for the quality of application-side changes connecting sustained applications to the modernized platform. Technical Leadership & Collaboration * Mentor and provide technical guidance to engineering squad leads. * Facilitate cross-track design reviews to promote architectural consistency and technical alignment. * Resolve technical disputes between sustainment and platform squads, balancing engineering quality, delivery requirements, and program objectives. * Foster collaboration and knowledge sharing across engineering teams.