> Markdown version of [/jobs/ext/4514115-senior-systems-engineer-onsite](https://www.wearedevelopers.com/jobs/ext/4514115-senior-systems-engineer-onsite). 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). --- # Senior Systems Engineer - Onsite - **Company:** RTX - **Location:** Sterling, VA, United States - **Experience:** Expert - **Salary:** $95,500.0 - $181,700.0 - **Contract:** Permanent contract - **Skills:** Systems Engineering, Software Requirements Analysis, Subsystems, Systems Modeling Language - **Published:** November 2, 2026 - **Apply:** https://www.adzuna.com/details/5889415651 ## About the Role Active and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance, The ideal candidate brings systems engineering experience, a strong knowledge of avionics, mission systems or autonomous systems, and the ability to work across multidisciplinary teams in a defense or aerospace environment., * Experience with capture, analysis and decomposition of System requirements * Understanding of the Product Development Lifecycle - from CONOPS to Sustainment * Must have experience with Model-Based System Engineering (MBSE) design tools (Enterprise Architect, Cameo, or equivalent) using SysML * Ability to work in a classified environment and obtain/maintain required security clearance * Strong communication and collaboration skills. * Requires on-site presence in a classified lab space * Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 5 years prior relevant experience or an Advanced Degree in a related field and minimum 3 years of experience * Active and transferable U.S. Government DoD 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 Qualifications We Prefer: * Experience with capture, analysis and decomposition of System requirements * Understanding of the Product Development Lifecycle - from CONOPS to Sustainment * Experience with Model-Based System Engineering (MBSE) design tools (Enterprise Architect, Cameo, or equivalent) using SysML. * Ability to work in a classified environment and obtain/maintain required security clearance * Strong communication and collaboration skills. * Requires on-site presence in a classified lab space ## Description * Lead systems engineering activities across the full lifecycle of training systems, including requirements development, design, integration, test, and sustainment * Interface with customers, program managers, and internal stakeholders to align technical solutions with mission requirements * Ensure training systems accurately represent aircraft mission systems, including radar, communications, and command & control functions * Collaborate with software, hardware, and simulation engineers to integrate subsystems into cohesive training solutions * Identify risks and develop mitigation strategies related to system performance, integration, and delivery * Support upgrades, modifications, and obsolescence management for existing training systems * Mentor junior engineers and contribute to continuous improvement of engineering processes