Clearance Required: Secret (must be active) We're looking for a Principal Systems Security Engineer (Anti-Tamper/Program Protection) who enjoys solving complex technical challenges and collaborating with cross-functional teams. This role supports database operations, system sustainment, and data reliability for secure, mission-critical environments. In this role, you'll contribute across the engineering lifecycle-from design and development through integration, testing, production support, and sustainment. What You'll Do: - Support database operations, maintenance, and troubleshooting - Respond to database-related work requests and integration needs - Maintain schema, design, and support documentation - Partner with system maintainers and engineering teams - Help improve reliability, performance, and operational readiness What We're Looking For: - Typically requires a Bachelor's Degree in Science, Technology, Engineering or Mathematics (STEM) and 8 years of prior relevant experience - Active and transferable U.S. government issued Secret security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance - Experience in technical leadership - Experience in System Security Engineering, computer technology reverse engineering, Anti - Experience designing, implementing, testing, and fielding real - oriented solutions on Department of Defense (DoD) programs with secure systems technologies, methodologies, policies, and guidelines - Experience generating security (cyber, Anti Additional Details: - Onsite role in Tewksbury, MA - U.S. Citizenship required - Opportunity to support advanced, mission-critical technologies