Principal Mechanical Engineer, Harness & Interconnect

Raytheon; Tucson (AZ); On-site; USD 108,000 - 205,000; Full time

Benefits offered by this job

Relocation Eligibility

Benefits package

Job summary

Raytheon is seeking a Mechanical Design Engineer for the Precision Control Actuation System (PCAS) Harness and Interconnect team in Tucson, AZ. The role emphasizes autonomous design, verification, and collaboration on tactical missile systems under DoD clearance requirements.

You will leverage Creo 3D modeling, GD&T, and ECAD concepts while coordinating with engineers to deliver robust harness solutions through the full product lifecycle.

Qualifications

• Typically requires a STEM degree with 8+ years of relevant experience, or an advanced related degree with 5+ years experience.
• Minimum of 8 years of engineering experience.
• Experience designing and/or modifying harness and/or interconnect devices.

Responsibilities

• Autonomously apply expert knowledge in harness and interconnect design to support PCAS programs.
• Engage in detailed mechanical design, test design/execution, systems engineering, and proposals/estimates.
• Adapt responsibilities to meet changing organizational needs and project requirements.

Skills

Harness & Interconnect design

Geometric Dimensioning & Tolerancing

3D modeling

Systems thinking

Education

STEM degree

Advanced degree

Tools

Creo 3D Modeling

Pro/Engineer/CREO

Mentor Capital

ECAD tools / PCB design

Job description

Location:

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

Date Posted:

2026-09-24

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 Raytheon, the foundation of everything we do is rooted in our values and a higher calling – to help our nation and allies defend freedoms and deter aggression. We bring 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. Our team solves tough, meaningful problems that create a safer, more secure world.

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

What You Will Do

• At this grade level, you will be expected to work autonomously, have expert or mastery level knowledge of the harness and interconnect domain, exercise strategic vision to influence functional and organizational strategies of the PCAS organization beyond assigned program work, and coach and review the work of other professionals.
• Support may include but is not limited to detailed mechanical design, test design and execution, systems engineering, proposals and estimates, or earned value management.
• You will be expected to flex responsibilities based on the current needs of the organization and their respective skill sets.

What You Will Learn

• The PCAS organization provides ample opportunities for hands‑on hardware work. PCAS engineers are exposed to a variety of lab activities including engineering builds, hardware integration, and hardware verification.
• The PCAS organization provides a strong technical learning environment with a dedicated technology pyramid comprised of engineering fellows.
• PCAS 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 Advanced Degree in a related field and minimum 5 years experience
• A minimum of 8 years of engineering experience
• Experience designing and/or modifying Harness and/or Interconnect device s

Qualifications We Prefer

• Experience with engineering of complex systems of devices and interconnects.
• Experience with development of harnessing requirements, system architecture, requirements risk, requirements verification and validation, system performance & function, safety and environmental compliance
• Experience working with a wide variety of industry / military standards and specifications
• Experience generating first order electrical analysis including, but not limited to, DC resistance and voltage drop
• Experience deriving applicable technical requirements from higher level specifications
• Proficiency in Geometric Dimensioning and Tolerancing per ASME Y14.5
• Proven ability to deconstruct higher level tasks into discrete lower-level work packages and tasks
• Proven ability to take ownership of complex harnessing systems and coordinating completion of technical data packages with peers
• Experience developing technical solutions to a wide range of complex problems related to the entire product lifecycle including proposal, design, manufacture, integration and test
• Developing subject matter expertise round wire, rf, and/or rigid-flex harnesses
• Experience with harness design with mixed signals including knowledge of differential signals and shielding for EMI/RFI and crosstalk concerns.
• Moderate 3D modeling skills with a prominent commercial software package
• Experience with Pro/Engineer/CREO 3D modeling and mechanical drawing generation
• Experience with Creo Schematic, Mentor Capital, or other electrical system documentation software
• Experience with flex and rigid flex design including familiarity with ECAD software, PCB design, signal integrity, copper weight calculations, adhesives, dielectrics, coverlays, stiffeners and thermal management. The ability to problem-solve tight space and dynamic movement constraints is a bonus.
• Proven design and manufacturing knowledge in machined parts, injection molded parts, wire harnesses/flex harnesses and related components

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

The salary range for this role is 107,500 USD - 204,500 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills.

Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective‑bargaining agreement.

Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective‑bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance.

This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply.

RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window.

RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.

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