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Raytheon · 1 day ago

2026 ADGE Principal Mechanical Engineer (On-Site)

Tewksbury, MA

Full-time

Onsite

Senior Level, Lead/Staff

$101K/yr - $203K/yr

8+ years exp

Raytheon is an Aerospace and Defense company that provides advanced systems and services for commercial, military and government customers worldwide. They are seeking a motivated and driven Principal Mechanical Engineer to join their Ground Equipment Design Team, responsible for mechanical design, development, and integration of defense platform systems.

Intellectual PropertyInternetWeb Hosting

No H1B

Security Clearance Required

U.S. Citizen Only

Responsibilities

Perform mechanical design, development, and documentation of components, subassemblies, and major end items for defense systems, aligned with system requirements

Oversee small to mid-sized cross-functional engineering teams as the technical execution lead across all phases—from proposal generation and program initiation through design and into production

Serve as the technical focal point for mechanical or cross-functional teams within an Integrated Product Team (IPT) environment

Provide support for product integration with domestic and international factories and suppliers

Collaborate with engineering and non-engineering disciplines, and suppliers, to resolve technical challenges and develop robust design solutions

Work independently with minimal supervision while ensuring schedule, cost, and technical commitments are met

Support and participate in design peer reviews, and conduct trade studies to enable sound technical decision-making

Apply mechanical engineering knowledge to solve problems and support hardware development in a fast-paced, team-oriented environment

Mentor and guide junior engineers, fostering growth and knowledge sharing within the team

Qualification

Mechanical EngineeringMechanical DesignCAD Design ToolsSystem IntegrationMaterial SelectionManufacturing ProcessesProduct Data ManagementGeometric Dimensioning & TolerancingCreative Problem-SolvingCommunication SkillsTeam LeadershipInterpersonal Skills

Required

Minimum of 8 years of experience in Mechanical Engineering, including at least 3 years of hands-on design and development of mechanical equipment (preferably in military or defense environments)

Proven experience spanning concept development, detailed design, transition to production, and sustainment

Strong background in mechanical design, material selection, and manufacturing processes

Proficiency in CAD design tools, specifically Pro/ENGINEER (ProE) and CREO, including Large Assembly Management

Familiarity with Product Data Management (PDM) systems: part structures, CNs (Change Notices), PRECOs (Preliminary Engineering Change Orders), and initial releases

Demonstrated creative problem-solving capabilities

Bachelor of Science (BS) in Mechanical Engineering or a related technical field

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

Preferred

Master of Science in Mechanical Engineering or equivalent years of experience in a related role or discipline

Excellent communication, technical writing, presentation, and interpersonal skills

Working knowledge of Military and Commercial Specifications

Experience with: Design and integration of electronic and shelter assemblies, Power distribution equipment packaging, Rack system integration, Troubleshooting electromechanical systems, Interconnects, Cables, and Harness systems, CNC machined components and welded assembly design, ASME Y14.5 Geometric Dimensioning & Tolerancing (GD&T) proficiency

Experience with structural design and analysis

Strong skills in mechanical CAD modeling and drafting

Understanding of manufacturing systems and electromechanical production environments

Experience working within an Integrated Product Team, collaborating across Engineering, Operations, Supply Chain, and Quality teams

Ability to work effectively under pressure, meet deadlines, and manage priorities with minimal conflict

Flexibility and willingness to adapt to varied and evolving assignments

Strong team leadership and collaboration skills

Prior experience managing engineering risk and opportunity, as well as contributing to or leading proposal efforts

Earned Value Management (EVM) and Estimate at Completion (EAC) experience

Active or prior Secret Clearance is a plus