Principal Mechanical Engineer, Radar Electronics

RTX (Raytheon); Portsmouth (RI); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Parental leave

Flexible work schedules

Educational assistance

Backup care

Job summary

RTX in Portsmouth, RI is seeking a Principal Mechanical Engineer to lead the mechanical hardware design and integration of back-end electronics for rugged defense systems. You will manage development from concept through production, ensuring performance, cost, and schedule targets are met.

The role requires a STEM degree with 5–8+ years of experience or an advanced degree with at least 5 years in aerospace/military contexts. U.S. citizenship and ability to obtain DoD clearance are mandatory.

Qualifications

• Bachelor's degree in Science, Technology, Engineering or Mathematics (STEM) with 8+ years of experience, or an Advanced Degree with 5+ years of experience.
• Experience in mechanical design for aerospace/military applications and multi-baseline management.
• Experience with hardware packaging and integration for military/commercial applications.
• Ability to obtain and maintain a DoD security clearance; U.S. citizenship required.

Responsibilities

• Lead mechanical development of back-end electronics systems and components to meet system-level performance.
• Provide program support from early development through transition to production.
• Ensure cost, schedule, quality, and performance targets are met.
• Collaborate with cross-functional teams and customers; travel as needed to support hardware build and test.

Skills

Mechanical design

System integration

Program management

Technical leadership

Creo Pro/E

Microsoft Office

Education

STEM degree

Advanced degree

Tools

Creo Pro/E

Microsoft Office

Job description

Date Posted: 2026-10-07

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: 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 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 freedom and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.

The Raytheon Hardware Engineering Organization 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 (UES) Department is looking for a full-time Principal Mechanical Engineer to manage the execution of the scope and future strategy associated with Back-End Electronics technology. This role will bring a blend of technical expertise, experience in mechanical hardware design, system integration skills, and 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.

What You Will Do

• Develop sound technical solutions to a wide range of complex problems related to the entire product life cycle.
• Program support and development from early development through transition to production.
• Lead the mechanical development of radar back-end electronics systems and components that achieve the performance requirements at the system level.
• Ensure balance with risk conditions and constraints while advising leadership.
• Frequent technical contact with the customer and senior personnel regarding requirements, significant technical commitments, future technical needs, etc.
• Maintain responsibility for meeting cost, schedule, quality, and performance requirements for the finished product.
• Periodic travel will be required to support collaboration, and hardware build and test.

Qualifications You Must Have

• Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant or An Advanced Degree in a related field and minimum 5 years' experience
• Experience in the design of mechanical design for military or aerospace or commercial applications, managing multiple concurrent technical baselines.
• Experience with hardware packaging and integration for military or mechanical or commercial applications in a collaborative environment.
• 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.

Qualifications We Value

• Experience with ANSI drawing standards and/or first order or structural analysis techniques.
• Experience in ruggedized or military integration.
• Experience with CREO(Pro/E) or similar 3D solid modeling software.
• Leadership skills and project management for strategic decisions.
• Experience of Microsoft Office (Word, Excel, PowerPoint).
• Advanced degree in Science, Technology, Engineering or Mathematics (STEM).

What We Offer

A total rewards package that goes above and beyond with compensation; healthcare, wellness, and work/life benefits; career development and recognition programs. Some of the benefits we offer include parental (including paternal) leave, flexible work schedules, achievement awards, educational assistance and child/adult backup care.

Our values drive our actions, behav