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# Sr Principal Mech Engr, Control Actuation Systems

- **Company:** RTX
- **Location:** Tucson, AZ, United States
- **Experience:** Expert
- **Salary:** $132,400.0 - $251,600.0
- **Contract:** Permanent contract
- **Skills:** 3d Models, Creo Elements/Pro (Computer-Aided Design Software), DSpace, Hardware Design, Kinematics, MATLAB, Commercial Software, Simulink, Software Verification, Creo
- **Published:** July 31, 2026
- **Apply:** https://dejobs.org/x/x/97347E74CBD2493C907F347720BA53FA/job/

## About the Role

* Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 10 years of prior relevant experience, or An Advanced Degree in a related field and minimum 7 years experience
 * A minimum of 10 years of experience in mechanical engineering design

Qualifications We Prefer

 * Experience with Systems or Mechanical Engineering of servo controls
 * Experience with development of CAS requirements, CAS architecture, requirements risk, requirements verification and validation, system performance & function, safety and environmental compliance.
 * Experience in working with control actuation systems that employ permanent magnet brush and brush less DC motor technology
 * Experience with feedback control systems, including sizing, testing and integration, design-for-manufacturing, kinematic and dynamic simulation and analysis
 * Proficient in Geometric Dimensioning and Tolerancing per ASME Y14.5
 * Proven ability to deconstruct higher level tasks into discrete lower-level work packages and tasks
 * Proficient in generating free body diagrams
 * Proficient in Engineering processes and procedures
 * Moderate 3D modeling skills with a prominent commercial software package
 * Experience with Pro/Engineer/CREO 3D modeling and mechanical drawing generation
 * Experience using Matlab, Simulink, and dSpace
 * Proven design and manufacturing knowledge in machined parts, injection molded parts, hobbing, broaching, sheet metal fabrication, BLDC motors, wire harnesses/flex harnesses and related components, corrosion resistant steels and aluminum alloys

## Description

* At this grade level, you will be expected to work autonomously, have expert or mastery level knowledge within the control mechanism development domain, and exercise strategic vision to influence the functional and organizational strategies of the PCAS organization beyond assigned program work.
 * The PCAS organization provides ample opportunities for hands-on hardware work. PCAS mechanical engineers are exposed to a variety of lab activities including engineering builds, hardware integration, hardware tuning, and hardware verification.
 * The PCAS organization provides a strong technical learning environment with a dedicated control system technology pyramid comprised of engineering fellows. PCAS mechanical engineers are provided the opportunity for direct access to these subject matter experts, fostering accelerated technical growth.


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