Sr Mechanical Engineer, Harness & Interconnect

Prattwhitney; Tucson (AZ); On-site; USD 87,000 - 165,000; Full time

Benefits offered by this job

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

Holidays

Job summary

RTX is seeking a Mechanical Design Engineer in Tucson, AZ to support harness and interconnect system development, build, and verification. The role includes design, test, and systems engineering duties to meet program needs in a DoD environment.

You will work on harnessing requirements, architecture, verification, and data packages, with a focus on EMI/RFI concerns and complex assemblies. This U.S.-based role requires a DoD clearance and offers robust benefits.

Qualifications

• Typically requires a STEM degree and ≥5 years of relevant engineering experience.
• An advanced degree and ≥3 years experience is preferred.
• Experience designing or modifying Harness and/or Interconnect devices.
• Experience with complex systems of devices and interconnects.
• Experience developing harnessing requirements, architecture, risk, verification and validation.
• Proficiency in Geometric Dimensioning and Tolerancing per ASME Y14.5.
• Proficiency with Creo 3D modeling and mechanical drawing generation.
• Experience with Creo Schematic, Mentor Capital, or similar tools.
• Experience with flex and rigid-flex design, ECAD, PCB design and signal integrity.

Responsibilities

• Provide detailed mechanical design and test design/execution.
• Support proposals, estimates, and earned value management as needed.
• Adapt responsibilities based on organizational needs and skills.
• Design and modify harness and interconnect devices for complex systems.
• Coordinate with peers to develop and deliver technical data packages.

Skills

Harness design

Mechanical design

3D modeling

Creo

Geometric dimensioning and tolerancing

Electrical/Harness knowledge

System integration

Signal integrity

EMI/RFI awareness

Education

STEM degree

Advanced degree (related field)

Tools

Creo

Mentor Capital

ECAD/PCB tools

Job description

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. Join us and help shape the future of aerospace and defense.

What You Will Do

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

Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 5 years of prior relevant experience or

An Advanced Degree in a related field and minimum 3 years experience

A minimum of 5 years of engineering experience

Experience designing and/or modifying Harness and/or Interconnect devices

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.

The salary range for this role is 86,800 USD - 165,200 USD.

• 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
• 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.

At RTX we value: Safety, Trust, Respect, Accountability, Collaboration, and Innovation.

RTX is an aerospace and defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses – Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.

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 of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote.