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RTX · 3 weeks ago

2026 ADGE Principal Mechanical Engineer (On-Site)

MA131: Tewksbury, MA Bldg 1 Assabet 50 Apple Hill Drive Assabet - Building 1, Tewksbury, MA, 01876 USA

Full-time

Onsite

Lead/Staff

$101K/yr - $203K/yr

8+ years exp

RTX Corporation is an Aerospace and Defense company that provides advanced systems and services for commercial, military and government customers worldwide. They are currently 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.

AerospaceManufacturingSecuritySensorTelecommunications

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 ProcessesPDM SystemsGD&T ProficiencyTeam LeadershipProblem-SolvingCommunication SkillsTechnical WritingPresentation 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

Active or prior Secret Clearance is a plus

Benefits

Parental (including paternal) leave

Flexible work schedules

Achievement awards

Educational assistance

Child/adult backup care

Medical

Dental

Vision

Life insurance

Short-term disability

Long-term disability

401(k) match

Flexible spending accounts

Employee assistance program

Employee Scholar Program

Paid time off

Holidays

Company

RTX

Glassdoor3.8

RTX is comprised of three market-leading businesses – Collins Aerospace, Pratt & Whitney and Raytheon – working as one to answer the biggest questions and solve the hardest problems in aerospace and defense.

Founded in 1922

Arlington, Virginia, USA

10001+ employees