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Bonnell Industries Inc.

Senior Mechanical Engineer III

Dixon, IL

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hirly's read of this role

Seniority
Senior
Country
US
Work mode
On-site / unstated
First seen by hirly
11 Nov 2026

Derived automatically from the posting. Upload your resume above to see how the role scores against it.

the posting

Description

Under the direction of the Engineering Manager, the Senior Mechanical Engineer III is responsible for carrying out the duties of the Engineering department, including project management, calculations, design, research, prototyping, customer feedback, engineering documentation, estimating and mentoring. Primary focus will be on New Product Development and large-scale product redesign.

Essential Functions:

Technical owner of Division 1----Snow & Ice Equipment, Truck Equipment

  • Focuses on system design, scalability, and long-term maintainability, handling Bonnell’s most ambiguous and high-risk projects.
  • Project Management: Complex R&D Projects from concept through prototype, to production.
  • Develop, test and validation programs for R&D projects.
  • Conduct safety reviews to ensure products comply with all known industrial safety standards.
  • Interaction with customers: troubleshooting, product feedback, R&D project testing.
  • Structural and Hydraulic Calculations for new product development.
  • Wiring Harness and Schematic Design.
  • Equipment and systems compliance with industry regulations, with particular attention to chassis GVW and CG requirements.
  • Integrate new and evolving technologies into prototype and production equipment.
  • Mentorship: Review the work of Level I and II engineers and help them grow.

Full Time Benefits

  • 401K with Company Match
  • Profit Sharing
  • Dental, Vision, Medical Insurance
  • Health Savings Account with Company Match
  • Company Provided Life Insurance
  • Company Provided Short Term Disability
  • Company Provided Long Term Disability
  • Referral Program
  • Tuition Reimbursement
  • Paid Time Off
  • Paid Training
  • Paid Holidays
  • Opportunities for Advancement
  • Apparel Allowance
  • Safety Boot Allowance
  • Prescription Safety Glass Allowance

Requirements

Supervisory Responsibility

Mentorship of junior team members, providing project guidance and small task assignment.

Work Environment

This job is operated in a professional office environment with frequent visits to the production floor. This role routinely uses standard office equipment such as computers, phones, photocopiers, printers, filing cabinets. Knowledgeable use of common measuring devices such as tape measures, calipers, squares, and protractors will be used routinely.

Position Type/Expected Hours of Work

This is a full-time position. Evening and weekend work may be required as job duties demand.

Preferred Education and Experience

  • Bachelor’s degree in industrial design, mechanical engineering or related field
  • 6-8+ years’ experience in industrial design, mechanical engineering or related field.
  • Ability to plan, schedule, coordinate and solve problems effectively.
  • Expert-level proficiency of SolidWorks or other 3D CAD software, including use of FEA, wire and hose routing, schematics, and PDM.
  • Experience in a production environment.
  • Extensive knowledge of metal fabrication processes, including material selection, sheet metal, welding, fixturing, finishing and assembly.
  • Working knowledge of machine assembly, linkage design, etc.
  • Hydraulic & hydrostatic systems.
  • Power transmission and drive line systems.
  • 12V Electrical systems, CAN bus, programming logic.
  • Regulatory experience - OSHA, DOT, NHTSA, CFR.
  • Liquid handling systems knowledge.
  • Truck chassis layout and design.
  • Ergonomics/operator environment design.

Travel

Travel is primarily local during the business day, although some out of the area and overnight travel may be expected. All travel must be approved in advance by management. Please refer to the employee handbook for all applicable policies.

Physical Demands

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job.

While performing the duties of this job, the employee is regularly required to talk or hear. The employee frequently is required to stand; walk; use hands to grip, handle or feel; and reach with hands and arms. The employee may occasionally lift up to 40 pounds.

Additional Eligibility Qualifications

None.

Original posting on Bonnell Industries Inc.'s site ↗

Listed on hirly, a job board. hirly is not the employer: Bonnell Industries Inc. is hiring for this role.

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