Senior Process Engineer in California, USA - MP

3A Recruiting LLC; Green Bay (WI); On-site; USD 72,000 - 88,000; Full time

Benefits offered by this job

Health Insurance

Dental Insurance

Paid Holidays

Vacation Time

401K

401K matching

Relocation bonus

Job summary

MP is seeking a Senior Process Engineer to own all plastic injection-molded processes across facilities. You will collaborate with Operations Supervisors, Molding Technicians, Maintenance, Tool Room, and Automation Engineers to create stable processes, reduce scrap, and shorten cycle times.

Ideal candidates have 7+ years in high-volume plastic injection molding, with RJG Master Molder I/II or Scientific/Decoupled Molding certifications preferred and a track record in Lean/Six Sigma methodologies.

Qualifications

• Experience: Seven+ years hands-on process engineering in high-volume plastic injection molding.
• Certification/Methodology: RJG Master Molder I or II, or formal Scientific Molding/Decoupled Molding preferred.
• Technical Mastery: Deep expertise in resin behavior, mold design, hot-runner systems, dryers, chillers, thermolators.
• Demonstrated Lean/Six Sigma knowledge to reduce scrap and cycle times.

Responsibilities

• Lead tool trials and qualify new molds/materials using Scientific Molding principles.
• Establish robust process windows for new tooling and document baseline parameters.
• Transition qualified tools into production with Process Sheets and SOPs.
• Evaluate processes to identify root causes of variation, scrap, or long cycle times.
• Re-engineer and optimize parameters to reduce cycle times and scrap while preserving quality.

Skills

Seven+ years experience

Process engineering

Injection molding

RJG Master Molder I/II

Six Sigma

Lean

Cross-functional leadership

Job description

Senior Process Engineer in California, USA - MP

Full-time

Family owned and operated since 1990, the company has been manufacturing & delivering quality products to our customers for over 30 years. We are expert injection molders of plastic for custom-made designs. The company capabilities range from high-precision medical molding to large projects utilizing structural foam injection molding. We custom mold parts across a wide range of industries, including medical, electronic, consumer, aviation, and automotive.

We are seeking a high-impact Senior Process Engineer to take complete process ownership across all plastic injection-molded parts at its facilities. This role works closely with Operations Supervisors, Molding Technicians, Maintenance, the Tool Room, and Automation Engineers to establish stable, repeatable processes, minimize waste, and drive continuous operational improvement as the company scales.

KEY PERFORMANCE INDICATORS (KPIS) The employee will be evaluated directly on the following success metrics:

• Scrap Rate: Reduce scrap percentage across all active parts.
• Cycle Time Adherence: Ensure active production operates at or below established standard cycle times.
• Cycle Time Reduction: Identify and execute cycle-time optimizations on existing tooling.
• Labor Efficiency: Reduce direct labor hours required per unit through process improvements and automation integration.

KEY RESPONSIBILITIES

Scientific Molding and New Part Qualification:

• Lead tool trials and qualify new molds and materials using rigorous Scientific Molding principles, including viscosity curves, gate-seal studies, and pressure-drop analyses.
• Establish robust, repeatable process windows for new tooling and document baseline parameters.
• Transition newly qualified tools into full production with completed Process Sheets and SOPs.

Process Optimization and Stability:

• Methodically evaluate existing processes to identify root causes of process variation, high scrap, or extended cycle times.
• Systematically re-engineer and optimize parameters to reduce cycle times and scrap while preserving part quality and structural integrity.
• Drive process standardization across all shifts to maximize process capability.

Process Ownership, Training, and Discipline:

• Own and maintain official Process Sheets for all parts running within the facilities.
• Partner with Production Supervisors and Molding Technicians to train, mentor, and align teams on parameter standards and proper troubleshooting procedures.
• Establish and enforce a Process Change Management System; oversee root-cause investigations for parameter deviations and update official documentation only when approved.

Automation and Direct Labor Reduction:

• Collaborate with the internal Engineering team to identify, design, and integrate robotics, vision inspection, automated secondary operations, and other automation systems into existing cells.

Maintenance and Tooling Collaboration:

• Partner with the Tool Room to address mold wear, venting, thermal-management, or mechanical issues that introduce process variation.
• Partner with Maintenance to troubleshoot press hydraulic, electric, auxiliary, and process-equipment anomalies affecting consistency.
• Lead joint Root Cause and Corrective Action investigations for recurring tooling or press issues.

JOB INFORMATION

• Number of Job positions available: 1
• Starting Salary: $80,000/year + discretionary bonus.
• Workweek: “Daytime hours” Monday-Friday (we are flexible on start/ end times, but these will be salaried roles that are not tied strictly to our shift schedules)
• Criminal Background Check: Yes, applicants must be able to pass a Mexican and/or US CBC before departure from place of employment, arranged by the recruitment company.
• Drug Test? No pre-employment DT required.
• English Level: Bilingual in English and Spanish (C1). English B2 or better (they will need to be communicating very consistently with our English-speaking Engineering teams)
• Drivers License: Mexican valid drivers license and process US license in a timely manner to be in compliance with the US regulations.

QUALIFICATIONS AND EXPERIENCE

• Experience: Seven or more years of hands‑on process engineering experience in high‑volume plastic injection molding.
• Certification/Methodology: RJG Master Molder I or II, or formal Scientific Molding or Decoupled Molding certification, is strongly preferred.
• Technical Maestry:

- Deep expertise in resin behavior, mold-design principles, hot‑runner systems, and auxiliary equipment such as dryers, chillers, and thermolators.

- Demonstrated success applying Six Sigma and Lean tools to reduce scrap and cycle times.

• Cross-Functional Leadership: Proven ability to coach, train, and build trust with floor Technicians and Operators while maintaining strict standard-work discipline.

TRANSPORTATION EXPENSES TO PLACE OF EMPLOYMENT

• Paid flight to Business Location: Yes, relocation provided.
• Which airport are the workers arriving at? Oakland, San Francisco or Sacramento

WORKPLACE TRANSPORTATION

• Transportation to and from Worksite? Not provided by employer

HOUSING

• Housing benefit is not provided. Selected worker must secure own housing prior to arrival.

JOB INCENTIVES - BENEFITS

• Health Insurance, Dental Insurance, Paid Holidays, Vacation Time, 401K, 401K matching
• STANDARD EXPENSES THE COMPANY MAY REIMBURSE IF VISA/CHANGE OF EMPLOYER IS APPROVED
• Bonus: Up to $5000 USD of relocation bonus (to be decided by the employer during the recruitment process in the offer letter).
• Repayment Provision: The relocation bonus is provided upon arrival. However, if the employee voluntarily resigns or is terminated for cause within three (3) months of their start date, the employee shall be required to repay the full amount of the relocation bonus to the company.
• Travel expenses: Reasonable travel expenses will be reimbursed. Applicant must keep receipts.