Tharros is seeking a Senior Systems Engineer specializing in Weapons or Combat Systems to support NSWCDD in Dahlgren, VA. These engineers provide senior-level systems engineering expertise for weapon control systems and surface combat, control, and situational awareness systems throughout the full system lifecycle, from requirements definition and architecture development through integration, certification, fielding, sustainment, and modernization. In this role, personnel will work closely with government technical leads, program offices, fleet stakeholders, and cross-functional engineering teams to translate operational needs into achievable technical solutions, resolve complex integration challenges, and ensure mission-critical systems remain reliable, interoperable, and ready to support Navy and Marine Corps operations. The position requires a strong understanding of systems engineering discipline, configuration management, technical documentation, certification processes, and the operational environments in which advanced weapons and combat systems are deployed. Projects include systems engineering support of a variety of weapons systems, weapons control systems, and warfare systems. Requirements Perform total lifecycle system development and analysis supporting milestone decisions and initial design development from upper-level requirementsDevelop concept of operations documentation and system design specifications for weapon and combat systemsDevelop system integration documents for weapons systems, weapons control systems, and/or combat systemsSupport weapon and combat system certification processes, including self-certification criteria for system elementsAddress engineering issues for systems employing GOTS and COTS technologyLead engineering change proposals (ECPs), interface change requests, and system design documentationPerform system-level trade studies and risk assessments for weapons/combat system modificationsSupport shipboard system integration events and fleet deployment activitiesParticipate in technical design reviews, configuration control boards, and working groupsProvide technical mentorship to journeyman and junior engineers on the weapons/combat team