Mechanical Engineer I

RTX

. Design, model, and document mechanical components, sub-assemblies, and major end items for defense systems .

Posted 10/2/2026full-timeTewksbury • Massachusetts • United StatesMid-LevelSenior💰 $57,200 - $108,800 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in mechanical design and parametric 3D CAD modeling, with a strong focus on collaboration across multidisciplinary engineering teams. Proficient in validating design functionality through prototyping and testing, while adhering to industry standards and security requirements.

Highest-signal resume keywords

Parametric 3D CAD SoftwareMechanical DesignGD&T PrinciplesU.S. Government-Issued Security ClearanceRapid Prototyping

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

3D Solid ModelingMechanical AssembliesDetailed 2D Engineering DrawingsEngineering SimulationsProblem-Solving Aptitude

Soft Skills

CollaborationTechnical Communication

Tools & Technologies

SolidWorksPTC CreoAutodesk InventorCATIASiemens NX

Certifications & Qualifications

DoD Secret ClearanceU.S. Government-Issued Security Clearance

Industry Keywords

Defense SystemsRadar PlatformsMissile PlatformsCommand-and-Control PlatformsMechanical Fabrication

Tech Stack

Tools & technologies

Assembly

About the role

Key responsibilities & impact

Design, model, and document mechanical components, sub-assemblies, and major end items for defense systems
Generate and maintain parametric 3D CAD models, complex assembly hierarchies, and detailed 2D engineering drawings
Validate design fit, form, and functionality through rapid prototyping, physical testing, and engineering simulations
Support factory operations, integration facilities, and external suppliers with manufacturing, assembly, and integration
Participate in design peer reviews, resolve technical action items, and conduct trade studies
Collaborate with systems, electrical, manufacturing, and other multidisciplinary engineering teams
Analyze and resolve mechanical hardware issues
Contribute across the product lifecycle for radar, missile, and command-and-control platforms
Provide occasional CONUS travel to customer sites or suppliers

Requirements

What you’ll need

Bachelor's degree in Science, Technology, Engineering, or Mathematics (STEM) discipline; degree must be obtained by start date
Experience utilizing parametric 3D CAD software such as SolidWorks, PTC Creo, Autodesk Inventor, CATIA, or Siemens NX
Experience generating 3D solid models, mechanical assemblies, and detailed 2D engineering drawings
Experience in mechanical design through coursework, academic research, engineering competition teams, or hands-on projects
Active and transferable U.S. government-issued security clearance required prior to start date
U.S. citizenship required for security clearance eligibility
Ability to obtain an interim U.S. government-issued security clearance required prior to start date
DoD Secret clearance
Preferred: Bachelor's degree in Mechanical Engineering or Aerospace Engineering
Preferred: cumulative GPA of 3.0 or higher from an ABET-accredited institution
Preferred: knowledge or application of GD&T principles per ASME/ANSI Y14.5
Preferred: hands-on rapid prototyping and mechanical fabrication experience, including additive manufacturing or machine shop equipment
Preferred: problem-solving aptitude applied to structural, thermal, or multidisciplinary hardware challenges

Benefits

Comp & perks

Relocation Eligible
Medical insurance
Dental insurance
Vision insurance
Life insurance
Short-term disability
Long-term disability
401(k) match
Flexible spending accounts
Flexible work schedules
Employee assistance program
Employee Scholar Program
Parental leave
Paid time off
Holidays
Annual short-term and/or long-term incentive compensation programs may be available