Mechanical Engineer II (Onsite)

Prattwhitney; Tewksbury (MA); On-site; USD 69,000 - 131,000; 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 seeks a Mechanical Engineering specialist to contribute to defense system hardware. You will design, model, and document mechanical components across radar, missiles, and command platforms, collaborating with systems, electrical, and manufacturing engineers. The role involves prototyping, testing, and factory support.

We value hands-on prototyping, GD&T awareness, and a strong foundation in mechanical design earned through masters-level coursework or research. Relocation is possible.

Qualifications

• Master's degree in STEM required by start date.
• Experience using parametric 3D CAD to create models and drawings.
• Experience with mechanical design in coursework, research or projects.

Responsibilities

• Design, model, and document mechanical components and assemblies.
• Create 3D CAD models and detailed 2D drawings.
• Validate designs via prototyping, testing and simulations.
• Support manufacturing, assembly, and supplier integration.
• Participate in design reviews and trade studies.
• Collaborate with multidisciplinary teams to solve hardware issues.

Skills

Parametric 3D CAD

CAD workflow

Mechanical design

Education

Master's degree in Mechanical or Aerospace Engineering

ABET-accredited program

Tools

SolidWorks

PTC Creo

Autodesk Inventor

CATIA

Siemens NX

Job description

Date Posted: 2026-10-02 Country: United States of America Location: US-MA-TEWKSBURY-TB1 ~ 50 Apple Hill Dr ~ ASSABET BLDG 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

Are you ready to explore the world of aerospace and defense? Do you want to learn from and collaborate with some of the greatest minds in the industry? At RTX, our internships, co-ops and full-time careers provide an exceptional foundation to work on complex problems, advance your skills and create a safer, more connected world. Discover opportunities to make a difference at RTX. 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. Join us and help shape the future of aerospace and defense. 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

• Masters 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.

We Prefer

• Master’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

Relocation Eligible.

The salary range for this role is 68,900 USD - 131,100 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

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.

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.