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Senior Mechanical Engineer - P3 Cleared on-site

Apex Systems
Tucson, AZ Full Time
POSTED ON 4/27/2026
AVAILABLE BEFORE 5/27/2026
Job#: 3031306

Job Description:
Senior Mechanical Engineer - P3 Cleared on-site

Location: Tucson, Arizona (Onsite)
Employment Type: Contract

Role Overview

This Mechanical Engineering position involves design, development, and production support for mechanical designs throughout the entire life cycle. The work includes understanding requirements, concept development, Failure Mode and Effects Analysis (FMEA), margin analysis, and creating technical data packages (TDP). Responsibilities also involve applying geometric dimensioning and tolerancing (GD&T) principles, conducting engineering tests, preparing technical analysis reports, and presenting data in design reviews.

Key Responsibilities
  • Perform mechanical design, development, and production support.
  • Develop design concepts and conduct Design for Manufacturing and Assembly (DFMA) and Process Failure Mode and Effects Analysis (PFMEA).
  • Create and manage Technical Data Packages (TDP).
  • Apply geometric dimensioning and tolerancing principles to designs.
  • Prepare technical analysis reports and present findings in design reviews.
  • Provide solutions to a variety of technical problems of moderate scope and complexity.
  • Interact with suppliers and manage supplier relationships.
  • Travel to government and supplier facilities as required for program activities.
Required Qualifications

Education: A Bachelor's Degree in Science, Technology, Engineering, or Mathematics (STEM) is required.

Experience: A minimum of 5 years of relevant experience in mechanical design and design documentation is required. Alternatively, an advanced degree with a minimum of 3 years of experience will be considered.

Skills & Clearances:
  • U.S. citizenship is required.
  • The ability to obtain and maintain a U.S. government-issued security clearance is required. An active interim clearance is needed to start.
  • Demonstrated mechanical aptitude for problem-solving.
Preferred Qualifications
  • An advanced degree in an Engineering discipline.
  • Leadership experience with small teams.
  • Experience in mechanical sub-systems packaging, materials, thermal analysis, structural analysis, energetics, control systems, interconnect, airframe, or large assembly development.
  • Proficiency with Geometric Dimensioning & Tolerancing (GD&T) per ANSI Y14.5.
  • Experience with CREO (Pro/E) or similar 3D solid modeling software.
  • Experience with PTC Windchill or equivalent Product Data Management software.
  • An active DoD-issued security clearance.
Compensation & Benefits

The pay rate for this position ranges from $75.00 to $129.21 per hour. Compensation may vary based on factors including but not limited to skills, experience, and location.

This employer 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, or protected veteran status and will not be discriminated against on the basis of disability.

Apex uses a virtual recruiter as part of the application process. Click for more details.

If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Benefits Department at or .

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico. Apex uses a virtual recruiter as part of the application process. Click for more details.

Apex Benefits Overview: Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6 months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Apex team member can provide.

Salary : $75 - $129

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