Principal Mechanical Engineer, Control Actuation Systems

RTX (Raytheon); Tucson (AZ); On-site; USD 120,000 - 180,000; Full time

Job summary

RTX in Tucson seeks a Principal Mechanical Design Engineer to support the PCAS organization, focusing on development, build, and verification of control actuation systems. You will engage in design, test, and systems engineering for aerospace applications, working with cross-functional teams on challenging programs.

The role requires a DoD Secret clearance, STEM degree with extensive experience, and the ability to work onsite in Tucson with limited supervision.

Qualifications

• Requires a STEM degree with 8+ years of relevant experience or an advanced degree with 5+ years of relevant experience.
• Experience in mechanical mechanism design or flight control systems for aerospace applications.
• Basic proficiency with model development and data analysis in MATLAB/Simulink; familiarity with DOORS/CAMEO is a plus.

Responsibilities

• Provide mechanical engineering support across programs, including detailed design, earned value management, test design and execution, and systems engineering.
• Operate autonomously with minimal oversight, manage moderate-sized projects, delegate work, and influence policies and procedures.

Skills

Mechanical design experience

Flight control systems

Earned Value Management

Requirements management

Education

Degree in STEM

Tools

MATLAB/Simulink

DOORS

CAMEO

dSPACE

MS Office

Job description

Date Posted: 2026-10-12

Country: United States of America

Location: US-AZ-TUCSON-M10 ~ 3360 E Hemisphere Loop ~ BLDG M10

Position Role Type: Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements: 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

Security Clearance Type: DoD Clearance: Secret

Security Clearance Status: Active and existing security clearance required on day 1

At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world's most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.

Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today's mission and stay ahead of tomorrow's threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world.

The Precision Control Actuation System department is seeking a principal mechanical design engineer to join the PCAS organization to support the development, build, and verification of control actuation systems. The PCAS organization staffs mechanical engineers for a variety of roles supporting primarily control section Integrated Product Teams.

What You Will Do

• You will provide various mechanical engineering support as needs of programs fluctuate. Based on skillsets, support may include but not limited to detailed mechanical design, earned value management, test design and execution, and systems engineering.
• You will be expected to flex responsibilities based on the current needs of the organization and their respective skill sets.
• At this grade level, you will be expected to work autonomously with minimal oversight, may manage moderate size projects, delegate work to lower level professionals, have advanced to expert knowledge of the control mechanism development domain, address problems that are difficult and complex, and influence others regarding policies, practices and procedures

What You Will Learn

• The PCAS organization provides ample opportunities for hands-on hardware work, with a dedicated lab space at our Huntsville and Tucson facility.
• 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.

Qualifications You Must Have

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience or an advance degree and a minimum of 5 years relevant experience
• Experience in mechanical mechanism design OR flight control systems for aerospace applications

Qualifications We Prefer

• Experience developing flight control systems for aerospace applications
• Experience in mechanism design
• Advanced degree in Mechanical Engineering, Aerospace Engineering, Systems Engineering, Electrical Engineering, or Physics
• Basic proficiency with model development and data analysis in MATLAB/Simulink
• Experience working with and integrating hardware.
• Basic knowledge of DOORS, CAMEO, and/or other requirements management tools
• Systems engineering design and development
• Experience with dSPACE Real-time test systems
• Proven ability to deconstruct higher level tasks into discrete lower-level work packages and tasks
• Ability to estimate project / tasks level of effort
• Ability to cross collaborate with geographically distributed teams
• Experience and certifications in Earned Value Project Management
• Ability to articulate, in both oral and written form, to technical, non-technical and management audiences
• Proficient in Microsoft Office products (Word, Excel, Powerpoint)

What We Offer

Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation.

Relocation Eligibility

Please consider the following role type definition as you apply for this role. Onsite : Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products. As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps