Senior Mechanical Design Engineer

Prattwhitney; United States; On-site; USD 87,000 - 165,000; Full time

Benefits offered by this job

Relocation assistance

Benefits package

Job summary

RTX Portsmouth, RI is seeking a Senior Mechanical Design Engineer to drive mechanical hardware design, system integration, and production support for defense programs.

You will lead design, analysis, and documentation efforts, mentor teammates, and collaborate across engineering, operations, and suppliers to resolve technical challenges.

Qualifications

• Typically requires a STEM degree and 5+ years of experience or an advanced degree with 3+ years.
• Experience creating, reviewing and interpreting technical documentation for hardware or tooling.
• Experience in mechanical design, development, manufacturing, or tooling processes.
• Experience with engineering drawings using a 3D CAD tool.

Responsibilities

• Design and develop solutions across the product lifecycle for military programs.
• Perform tolerance analyses to ensure form, fit and function.
• Lead small teams with strong mechanical design and cross-functional collaboration.
• Support product integration at domestic and international factories and supplier sites.
• Mentor less experienced engineers and participate in design reviews.
• Independently manage tasks to meet schedule, budget, and technical goals.

Skills

Mechanical design

System integration

Design reviews

Tolerance analyses

3D CAD

Electronics packaging

Education

Bachelor's degree in STEM

Advanced degree in related field

Tools

CREO CAD

Job description

Date Posted: 2026-08-31 Country: United States of America Location: US-RI-PORTSMOUTH-PS3 ~ 1847 W Main Rd ~ NIMITZ WEST BLDG Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government issued security clearance is required. 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 after day 1 Come be a part of our team and work on exciting systems for land, sea, and air! We're expanding our engineering organization dramatically to meet exciting customer demand, and we're actively looking for engineers who bring strong foundational skills and a passion for solving hard problems. Industry experience in defense? Not required — we'll invest in you.

If you meet the minimum qualifications, we want to talk.

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.

Raytheon’s Hardware Mechanical Engineering team leads the mechanical hardware design, development and production of critical defense systems.

The HWE Team uses state-of-the-art tools, processes, technology, and Raytheon’s CORE principles.

HWE’s capabilities encompass a broad range of technical disciplines which include engineering, prototyping, technical services, materials, processes, analysis, test, and documentation.

Within the Hardware Mechanical Engineering team, the Undersea & Electronics Systems (UES) Department leads the mechanical design, development, and integration of products, including but not limited to undersea sensors and analysis, naval platforms, shipboard/ground-based processing and power equipment, and launchers.

The ideal candidate for Senior Mechanical Design Engineer will bring a blend of technical ability, experience in mechanical hardware design, system integration skills, and a strong background in program execution whether design and development or production support.

As a key contributor on a mechanical or cross-functional engineering team, you will take responsibility for component and assembly modeling, documentation, design changes, and releases processes.

This position is ideal for a mid-career mechanical engineer who is looking to grow their skills in design, support to production, and technical problem-solving within a highly collaborative and mission-focused environment.

What You Will Do

Design: Develop innovative technical solutions to a wide range of complex challenges spanning the entire product lifecycle, including proposal, advanced development, design, cooling, manufacturing, integration, and testing of components and systems for military programs.

Perform tolerance analyses to ensure form, fit, and function are as intended by design for the use-application.

Lead small teams utilizing strong mechanical hardware design experience and knowledge in a fast-paced collaborative environment with ruggedized structures, interconnects, cooling, electronics packaging, tooling and/or array integration.

Provide support for product integration and efforts in both domestic and international factories and supplier locations to assess requirements compliance.

Teaming/Communication: Collaborate with cross-functional teams including other engineering disciplines, operations, supply chain, quality, and external suppliers to resolve technical challenges and develop effective design solutions.

Independently manage tasks and deliver on schedule, budget, and technical goals.

Participate in design reviews and conduct trade studies to support informed, sound engineering decisions.

Mentor and guide less experienced engineers, contributing to team development and technical growth.

Qualifications You Must Have

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.

Experience in the creation, review and interpretation of technical documentation utilized in the development or production of hardware or tooling products.

Experience in mechanical design, advanced design development, manufacturing or tooling processes, or related areas.

Experience in the development, creation, release, or updates of engineering drawings utilizing a 3D CAD design tool.

Qualifications We Prefer

Proven mechanical design ability in a production or advanced development environment.

Experience in design, fabrication, or integration of Electronics Packaging, design, development and integration of Electronic Systems, including interconnects, power distribution, cooling, or tooling products.

Technical Data Package creation, change notice processing including communication of required functional and performance requirements.

Experience using CREO CAD design and documentation tools or similar 3D solid modeling software with a configuration and data management environment.

Experience in Geometric Dimensioning and Tolerancing.

Experience with cost and/or schedule reporting or proposal development.

Highly detail-oriented with a demonstrated ability to work effectively within cross-functional teams.

Familiarity with Military and/or Commercial Specifications and requirements.

Willingness to travel (domestic and international).

Advanced degree in mechanical engineering, aerospace hardware systems design.

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.

Work Schedule: 9/80 schedule (every other Friday off)

Relocation Eligible - relocation assistance is available for this position.

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 onsite work in Portsmouth, RI: https://careers.rtx.com/global/en/raytheon-portsmouth,-ri

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.

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

Privacy Policy and Terms:

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.