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# Principal Systems Engineer - Onsite

- **Company:** RTX
- **Location:** Sterling, VA, United States
- **Experience:** Expert
- **Salary:** $118,300.0 - $224,900.0
- **Contract:** Permanent contract
- **Skills:** Systems Engineering, Systems Development Life Cycle, Distributed Simulation, Software Requirements Analysis, Subsystems, Systems Modeling Language, Systems Integration, Real Time Systems
- **Published:** September 18, 2026
- **Apply:** https://dejobs.org/x/x/3D8CBDAEC10C4B7A9FA9C1682C37FB86/job/

## About the Role

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 8 years prior relevant experience or an Advanced Degree in a related field and minimum 5 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:

 * Background in simulation and training system development
 * Experience working in a SAFe Agile environment
 * Familiarity with real-time systems, distributed simulation or virtual training environments
 * Experience with hardware/software integration and lab environments
 * Knowledge of DoD acquisition processes and standards

## Description

* Be the focal point for 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


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