Plastic Injection Molding Process Engineer
Mmi Engineered Solutions, Inc.
Saline, MI, USA
Posted on Feb 17, 2026
MMI Engineered Solutions is seeking an experienced, hands-on Process Engineer to join our Injection Molding team. Reporting to the Manufacturing Engineering & Facilities Manager, this role is critical to optimizing molding performance, driving continuous improvement, and ensuring stable, capable manufacturing processes.
This is a highly floor-focused, technical role requiring direct involvement with molding machines, tooling, and process troubleshooting. It is not a desk-only engineering position.
Key Responsibilities:
- Lead process development and validation for new and existing injection molds using Scientific and Decoupled Molding techniques
- Analyze and optimize molding processes to improve quality, cost, throughput, cycle time, and scrap reduction
- Establish and maintain process controls, startup documentation, and standard production parameters
- Start up, shut down, troubleshoot, and support molding equipment, tooling, and auxiliary systems
- Conduct DOE's, process capability studies, and tooling qualifications
- Provide hands-on technical support for daily production activities, tool sampling, and quality concerns
- Recommend mold and equipment improvements and support capital projects and cost reduction initiatives
- Collaborate cross-functionally with Engineering, Quality, Production, and Manufacturing leadership to ensure stable, capable processes
- Train, coach, and provide technical direction to mold setters, operators, and engineers
- Support quoting activities and interface with customers or vendors as required
- Follow ISO 14001 and TS 16949 requirements
Required Qualifications:
- Two-year technical degree or comparable work experience
- Minimum of 8 years of experience in an injection molding environment
- At least 5 years of successful plastic injection molding processing experience
- Demonstrated knowledge of Scientific Injection Molding techniques
- Proven troubleshooting and root-cause analysis skills
- Ability to read measuring devices and interpret blueprints
- Knowledge of Lean Manufacturing tools and applications preferred
- Proficiency in Microsoft Office Suite preferred
- Strong analytical, problem-solving, and root-cause analysis skills
- Ability to lead initiatives and work cross-functionally in a fast-paced manufacturing environment
- Strong leadership, communication, and training skills
Work Environment & Expectations:
- Manufacturing-floor–focused role with significant hands-on involvement with molding equipment and tooling
- Standing for extended periods in areas that may be hot, noisy, and dusty
- Commitment to safety, ergonomics, and environmental standards
Why Work at MMI?
- A rich Benefits Package including Medical, Dental, Vision, Long and Short-Term Disability (Company Paid), a robust Wellness Program, tuition reimbursement, and a 401(k) Retirement Plan with matching.
- Vacation and Sick Time
- Up to Ten (10) paid holidays (including one diversity holiday)
- Perfect Attendance and Employee Referral Bonus opportunities (up to $200 per referral)
- Opportunities for growth and job training, for energetic, career-minded individuals.
- Located in Saline, MI just minutes from Planet Fitness, Emagine Saline, and hundreds of local businesses!
Who We Are:
MMI is a plastic injection molding and engineering solutions provider headquartered in Saline, Michigan, with offices in Troy, Warren, and Monterrey, Mexico. We specialize in delivering engineering solutions for advanced composites and engineered resins across diverse industries.
Our mission is simple: Deliver a Quality Product, On Time, at a Competitive Price.
We are committed to fostering an inclusive, welcoming workplace where innovation thrives and collaboration is at the heart of everything we do.
MMI Engineered Solutions is an Equal Opportunity Employer.