Principal Mechanical Engineer - Mechanism Design

Position Overview

Radar Mechanical Design Engineer – responsible for developing technical solutions for a broad range of mechanism and machine design challenges supporting advanced radar systems and subsystems in the Radar Mechanical Design Department. The role includes the full mechanical design lifecycle, from concept to production support, and requires a U.S. security clearance (Secret) and U.S. citizenship.

Location: 1001 Boston Post Rd, Building 1, Marlbrough, MA, USA. Role Type: Onsite.

Responsibilities

• Develop technical solutions for mechanism and machine design challenges.
• Design and analyze motion control actuation systems, custom actuators, geartrains, bearings, and other mechanical elements.
• Perform kinematic and dynamic analysis of mechanisms, first‑order structural, thermal, tolerance, and margin analyses.
• Support the full mechanical design lifecycle: requirements development, concept generation, trade studies, material selection, free‑body diagram development, and GD&T application.
• Create and maintain 3‑D models, engineering drawings, tolerance analyses, and manufacturing documentation.
• Partner with manufacturing and test teams for prototype builds, tooling development, integration activities, and verification testing.
• Participate in technical and design reviews, ensuring designs meet performance, quality, manufacturability, and reliability requirements.
• Lead mechanical development efforts for radar systems and components while balancing technical performance, schedule, cost, and risk.
• Collaborate closely across multidisciplinary engineering teams, suppliers, and program leadership to drive execution and resolve complex design challenges.
• Provide technical leadership and engineering judgment with minimal oversight.

Qualifications

Must Have

• Typical STEM degree with at least 8 years of prior relevant experience or an advanced degree with at least 5 years of experience.
• Mechanical design experience for military, aerospace, or commercial applications.
• Experience in developing actuation drive systems (power management, motor/gear train sizing, spur gear, ball screw, lead screw, etc.) and bearing configurations for friction, accuracy, load capacity, or electromechanical control systems.
• Experience with mechanism synthesis and analysis.
• Proficiency in geometric dimensioning and tolerancing (ASME Y14.5).
• Ability to deconstruct higher‑level tasks into discrete work packages.
• Proficient in free‑body diagram generation.
• Experience with CREO (Pro/E) or similar 3‑D solid modeling software.
• Experience with ANSYS Mechanical or similar FEA modeling software.
• Working knowledge of Microsoft Office (Word, Excel, PowerPoint).
• Excellent verbal and written communication and interpersonal skills.
• Advanced degree in Mechanical, Electrical, or Aerospace Engineering (preferred).

Preferred

• Experience with control actuator system requirements, architecture, risk, and performance design.
• Experience with feedback control systems, sizing, testing, integration, design for manufacturing, kinematic and dynamic simulation.

Benefits & Compensation

• Salary range: $107,500 – $204,500 USD.
• Comprehensive benefits: medical, dental, vision, life insurance, short‑term and long‑term disability, 401(k) match, flexible spending accounts.
• Work‑life benefits: flexible scheduling, parental leave, paid time off, holidays, educational assistance, employee assistance program.
• Relocation assistance available.

EEO Statement

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 Section503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.

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