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Sr Principal Mechanical Engineer Lead

Job in Tewksbury, Middlesex County, Massachusetts, 01876, USA
Listing for: Raytheon Technologies
Full Time position
Listed on 2026-01-02
Job specializations:
  • Engineering
    Systems Engineer, Mechanical Engineer
Job Description & How to Apply Below

Date Posted:
Country:
United States of America

Location:

MA131:
Tewksbury, MA Bldg 1 Assabet 50 Apple Hill Drive Assabet – Building 1, Tewksbury, MA, 01876 USA 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:
DoD Clearance:
Secret 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.

The Raytheon Mechanical Engineering (ME) Organization leads the mechanical hardware design, development and production of radar, sonar, torpedo, and combat system equipment. The ME Team uses state-of the-art tools, processes, technology, and Raytheon’s Six Sigma principles. ME’s capabilities encompass a broad range of technical disciplines which include engineering, manufacturing, technical services, materials, processes, analysis, test, and documentation.

The Air Defense Ground Equipment (ADGE) Department leads mechanical design, development, and integration of platform systems. This includes launcher systems, shelter systems, missile hardware, hardware integration, cable & interconnections, as well as facility development, and site integration. The department is comprised of individuals with technical expertise and experience in hardware design, integration, and production support.

The ADGE department is looking for a full-time Senior Principal Mechanical Engineer to support Patriot GEM-T Missile major components and sub-assemblies, including obsolescence upgrades, procurement and supplier support located in Tewksbury or Andover, MA (onsite)

What You Will Do

Key Responsibilities
  • Lead execution of major programs within the department, including shelter mechanical design, electronic equipment integration, end-item development, vendor coordination, and the integration of power and cooling systems. Support ongoing sustainment of existing product lines.
  • Support and lead cross-functional engineering teams, delivering solutions and services across all phases of the program lifecycle. This may include development of next-generation sensing technologies, enhancements to current products, transition to production, in-field upgrades, and vendor oversight.
  • Lead and contribute to proposal efforts and Estimate at Completion (EAC) activities, providing strategic and technical input.
  • Serve as a Subject Matter Expert (SME) across multiple programs, providing critical and timely support to ensure successful execution and delivery.
Responsibilities include, but are not limited to:
  • Serve as a technical liaison to programs and Integrated Product Teams (IPTs), ensuring alignment across stakeholders.
  • Oversee the technical performance of the design team, providing engineering guidance and project support throughout the entire product lifecycle.
  • Support and lead Technical Data Package (TDP) development and conduct/oversee thorough peer reviews.
  • Lead mid- to large-sized cross-functional engineering teams as the technical execution lead across all development phases—from proposal generation and program start-up through requirements allocation, preliminary and detailed design, and into first article production.
  • Perform complex mechanical design, development, and documentation of components, subassemblies, and major end items for defense system applications, ensuring compliance with system requirements.
  • Provide product integration support for both domestic and international factories and suppliers.
  • Manage and meet schedule, cost, and technical performance commitments for assigned tasks and projects.
  • Apply deep knowledge of hardware engineering best practices to ensure technical excellence. The ability to partner effectively with Chief Engineers and technical leads…
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