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Manufacturing Manager

Summit Polymers
Portage, MI Full Time
POSTED ON 5/25/2026
AVAILABLE BEFORE 6/19/2026
Summit Polymers is a leading, global supplier of automotive interior systems including consoles, door panels, and instrument panels. With over 50 years serving the industry, we deliver engineering and product excellence to our customers, on time, in budget, with the latest innovations.

JOIN A TEAM WHERE YOU’LL BE CHALLENGED AND valued.

A career with Summit Polymers means working with smart people in a culture that thrives on challenging, meaningful work. At Summit, we look for growth potential with every hire. We don’t just fill seats, we set people on career paths. We’re always on the lookout for smart people who are committed to continuous improvement, customer service and quality.

Job Description

JOB TITLE: Manager, Manufacturing FLSA STATUS: Exempt

REPORTS TO: General Manager

Summary

Plans, coordinates and manages 3 shifts of production manufacturing operations through subordinate department managers and supervisors to achieve production of high quality, low cost, on-time product for SPI’s customers while meeting safety objectives.

Responsibilities And Duties

  • Meet manufacturing operation objectives including key metrics related to:
  • Safety
  • Quality
  • Cost
  • Delivery
  • Ensure manufacturing operations have a safe working environment through:
  • Safe work practices
  • Employee awareness
  • 5S and housekeeping
  • Layered safety audits and closure of safety related issues
  • Ensure plant manufacturing operations closely adhere to Summit Lean Manufacturing System (SLMS) practices. Key SLMS elements include:
  • Standardized Work
  • One for One Production
  • KanBan
  • Root Cause Problem Solving (PPS)
  • Manage manufacturing planning tools:
  • Molding GPE Workbook
  • Paint GPE Workbook
  • Assembly ADCALC Workbook
  • Utilize manufacturing planning tools monthly to:
  • Ensure production staffing complies with standard staffing allowances
  • Ensure Molding and Paint equipment loading meets targeted capacity
  • Ensure Molding and Paint stores are correctly planned and setup
  • Train subordinate managers and supervisors
  • Manage training of departmental hourly employees
  • Participate in employee disciplinary process with subordinate managers, supervisors and Human Resource department
  • Participate in PPS root cause problem solving activities
  • Leads collaboration and team-work with other plant departments to optimize plant operations
  • Ensure department compliance to SPI systems and procedures supporting:
  • IATF 16949 Quality standard
  • ISO 14001 Environmental standard
  • Engage in new product development and pre-launch activities, ensuring manufacturing department participation, including:
  • Training of production employees
  • Molding, painting, and assembly pre-production runs
  • Communication of issues
  • Personally maintain plant floor focus, “go and see”, engage with all shifts
  • Participate in quarterly employee shift meetings
  • Other duties as assigned.


Education And Experience

  • College degree plus 4 years manufacturing experience or 6 years experience in a technical or management position in a manufacturing environment


Skills And Abilities

Possesses the ability to gather and analyze information and make decisions from a limited number of choices. Requires experience in Plastic Injection Molding, Painting, and Automotive Assembly processes. Agreement to complete all post-hire required training.

  • A minimum score of 50 on the Wonderlic Select Assessment (Traditional score of 26 on the cognitive portion).


Travel Requirements

This position typically does not require any travel.

DISCLAIMER

The information contained in this job description is not intended to be an all-inclusive list of the duties and responsibilities of the job, nor are they intended to be an all-inclusive list of the skills and abilities required to do the job. Management may, at its discretion, assign or reassign duties and responsibilities to this job at any time.

Salary.com Estimation for Manufacturing Manager in Portage, MI
$114,445 to $143,002
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