Hexagon US Federal, a leading provider of cutting-edge technologies for the US Federal government, is seeking a Principal Software Developer to join their team in Philadelphia. This senior leadership role requires an experienced technical professional with 15 years of experience to guide software development teams and oversee complex projects. The position combines technical expertise with leadership responsibilities, including architectural decisions, mentoring, and ensuring software quality. The role offers comprehensive benefits including healthcare, 401k matching, and professional development opportunities. The ideal candidate will have a strong background in software development, security clearance, and information assurance certifications. This position provides an opportunity to work on mission-critical projects while leading and mentoring technical teams in a stable, government-focused organization.