Mechanical Engineer I (Onsite)

Raytheon; Tucson (AZ); On-site; USD 57,000 - 109,000; Full time

Benefits offered by this job

Relocation Eligible

Full benefits package

Job summary

Raytheon is seeking a hands-on Mechanical Engineer to contribute to defense systems across radar, missile, and command-and-control platforms. You will work from concept design through verification testing, partnering with systems, electrical, and manufacturing engineers in a collaborative environment.

The role requires a DoD Secret clearance and US citizenship or eligibility, with occasional CONUS travel. Onsite work in Tucson, AZ, and a competitive salary with comprehensive benefits are offered.

Qualifications

• Bachelor’s degree in STEM must be obtained by start date.
• Experience with parametric 3D CAD software to produce 3D models and drawings.
• Experience in mechanical design through coursework, projects, or competitions.
• On-the-job or academic experience in mechanical design is acceptable.

Responsibilities

• Design, model, and document mechanical components and assemblies per defense system requirements.
• Generate parametric 3D CAD models and 2D drawings with detailed hierarchies.
• Validate designs via prototyping, testing, and simulations.
• Support manufacturing, assembly, and integration with suppliers and factories.
• Participate in design reviews and trade studies to inform decisions.
• Collaborate with multi-disciplinary teams to resolve hardware issues.

Skills

3D CAD modeling

Mechanical design

Engineering analysis

Education

Bachelor’s degree in STEM

ABET-accredited program (preferred)

Tools

SolidWorks

PTC Creo

Autodesk Inventor

CATIA

Siemens NX

Job description

Date Posted

2026-10-05

Country

United States of America

Location

US-AZ-TUCSON-800 ~ 1151 E Hermans Rd ~ BLDG 800

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

Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date

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.

What You Will Do

Join the Raytheon Hardware Engineering Organization and contribute mechanical engineering expertise to mission‑critical defense systems across radar, missile, and command‑and‑control platforms. In this role, you will participate across the entire product lifecycle—from initial concept design and structural/thermal analysis to rapid prototyping, design verification testing, and factory support. Working in a collaborative, cross‑functional environment alongside systems, electrical, and manufacturing engineers, you will solve complex technical challenges to deliver robust, high‑reliability mechanical solutions. Occasional CONUS travel to customer sites or suppliers is generally required. International and longer‑duration travel assignments are available but optional.

Key Responsibilities

• Design, model, and document mechanical components, sub‑assemblies, and major end items in accordance with rigorous defense system requirements.
• Generate and maintain parametric 3D CAD models, complex assembly hierarchies, and detailed 2D engineering drawings.
• Validate design fit, form, and functionality through rapid prototyping, physical testing, and engineering simulations.
• Support factory operations, integration facilities, and external suppliers with product manufacturing, assembly, and integration.
• Participate actively in design peer reviews, resolve technical action items, and conduct trade studies to inform engineering decisions.
• Collaborate with multi‑disciplinary engineering teams to analyze and resolve mechanical hardware issues.

Qualifications You Must Have

• Bachelor’s degree in Science, Technology, Engineering, or Mathematics (STEM) discipline. Degree must be obtained by start date.
• Experience utilizing parametric 3D CAD software (such as SolidWorks, PTC Creo, Autodesk Inventor, CATIA, or Siemens NX) to generate 3D solid models, mechanical assemblies, and detailed 2D engineering drawings.
• Experience in mechanical design applied through coursework, academic research, engineering competition teams (e.g., Formula SAE, Baja, Robotics), or hands‑on projects.
• Experience may be obtained through on‑the‑job experience, research, coursework, or projects.

Qualifications We Prefer

• Bachelor’s degree in Mechanical Engineering or Aerospace Engineering.
• Cumulative GPA of 3.0 or higher from an ABET‑accredited institution.
• Knowledge or application of Geometric Dimensioning & Tolerancing (GD&T) principles per ASME/ANSI Y14.5.
• Hands‑on experience in rapid prototyping and mechanical fabrication, including additive manufacturing (3D printing via FDM, SLA, or SLS) or machine shop equipment (mills, lathes, drill presses, or CNC equipment).
• Demonstrated problem‑solving aptitude applied to structural, thermal, or multi‑disciplinary hardware challenges.

What We Offer

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

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.

This position requires the ability to obtain a security clearance. DCSA Consolidated Adjudication Services (DCSA CAS), an agency of the Department of Defense, handles and adjudicates the security clearance process. More information about Security Clearances can be found on the US Department of State government website here: https://www.state.gov/m/ds/clearances/c10978.htm

The salary range for this role is 57,200 USD - 108,800 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.