Mechanical Engineer

Cullerton Group has a new opportunity for a Mechanical Engineer 3 in Mossville, IL
. The work will be done 100% onsite at the Mossville Tech Center, primarily first shift (7:00 AM–3:00 PM). This is a 12-month position that can lead to permanent employment with our client. The position may require up to 25% travel for testing activities. Compensation is up to $44/hr + full benefits (vision, dental, health insurance, 401k, and holiday pay).

The Mechanical Engineer 3 will support the testing and validation of large-engine components and systems
, with a focus on engine structures, dynamics, vibration, and structural failure analysis
. This engineer will develop, conduct, analyze, and manage validation tests while working closely with design, simulation, and test teams. The role includes hands‑on engine and bench testing, data acquisition and analysis, prototype hardware coordination, instrumentation, and communication of test conclusions.

• Develop, conduct, analyze, and manage engine structures and dynamics validation tests
  .
• Evaluate complex structural failure modes and provide technical guidance to support product development and improvement.
• Perform vibration, stress/strain, modal, and structural testing on engine components and systems.
• Utilize data acquisition and analysis systems such as eDAQ, LMS, cDAQ, ME-SCOPE
  , and related instrumentation.
• Coordinate prototype hardware, test setups, instrumentation, and gaging while managing project plans, reports, and communication of results.
• Collaborate with design, simulation, technicians, and other engineering teams to resolve field issues and improve product quality.

• BS or MS in Mechanical Engineering.
• 4+ years of testing experience
  ; relevant internship experience may count toward experience.
• Experience as a Mechanical Engineer, Test Engineer, Development Engineer, or Development/Research Engineer is applicable.
• Basic understanding of internal combustion engines and machinery
  .
• Ability to read and interpret engineering drawings, blueprints, schematics, and technical documentation
  .
• Strong project management, initiative, attention to detail, technical communication, and problem‑solving skills
  .
• Ability to work collaboratively across multiple engineering teams and build strong working relationships.

• Experience with structural dynamics and vibration testing
  .
• Experience with modal testing and structural simulation
  .
• Hands‑on experience with eDAQ, LMS, cDAQ, ME-SCOPE, stress/strain measurement, instrumentation, and data acquisition
  .
• Experience testing engines, gensets, rotating components, cylinder packs, heads, blocks, or similar mechanical systems
  .
• Ability to manage multiple engine programs and identify opportunities to improve validation efficiency.

This position offers an opportunity to perform hands‑on validation work on large‑engine components and systems
, with exposure to engine structures, vibration, structural dynamics, and failure analysis. The engineer will work alongside experienced test engineers and technicians and collaborate with design and simulation teams while supporting both new product development and existing product improvements.