Software Developer (Principal/Expert) - TS/SCI with Polygraph Required

Position Summary Principal/Expert Software Developers provide technical leadership across the design, architecture, and delivery of the most complex, mission-critical application systems in support of the customer's requirements, including modernization efforts that transition legacy systems to next-generation architectures. Principal/Expert Software Developers own major technical decisions across the full stack, evaluate cross-system design trade-offs, and set engineering direction across Agile development teams. Principal/Expert Software Developers are expected to mentor Senior, Mid-Level, and Associate developers, represent technical solutions directly to the customer, and drive the adoption of sound engineering practices across the program. Requirements US Citizenships and TS/SCI with Polygraph (no exceptions) Education/Experience Requirements: Bachelor's degree and 12+ years of relevant professional software development experience (Master's degree and 10+ years also acceptable); additional relevant experience may be considered in lieu of a degree Required Skills: Expert-level proficiency in one or more modern programming languages (e.g., Java, JavaScript, Python) Extensive experience across the full stack, including web application UI development, back-end services, databases, and system integration Extensive experience designing and building RESTful APIs and microservices architectures Deep experience with cloud platforms and containerization/orchestration technologies (e.g., AWS, Docker, Kubernetes) Demonstrated experience leading Agile/Scrum development teams Extensive experience with DevOps practices and CI/CD pipelines Demonstrated ability to translate customer and system requirements into enterprise-level technical design, including migration of legacy systems to modern architectures Excellent critical thinking, technical writing, and oral communication skills, including the ability to present and defend technical solutions to customers and senior stakeholders Principal/Expert positions set technical direction for the program and mentor Senior, Mid-Level, and Junior developers