Senior Molding Engineer: Precision Silicone & Rubber

Ingersoll-Rand plc; Lincolnshire (IL); On-site; USD 100,000 - 125,000; Full time

Job summary

Ingersoll Rand is seeking a Sr. Process Engineer to develop, optimize, and sustain robust molding processes for liquid silicone rubber (LSR) and high‑consistency rubber (HCR) using injection, transfer, and compression molding.

You will partner with Tooling, Production, Quality, NPI, and Maintenance teams to ensure successful launches and stable manufacturing. The role requires 5+ years in silicone/rubber molding, strong DOE/SPC experience, and the ability to interpret GD&T and CAD drawings.

Qualifications

• Bachelor’s degree in Mechanical, Manufacturing, Materials, Plastics or Polymer Engineering.
• 5+ years of direct experience in silicone and/or rubber molding, with strong understanding of HCR molding, compression and transfer molding, cure cycles, post‑cure and material behavior.
• Experience using DOE, SPC and statistical tools for process improvement.
• Strong ability to interpret engineering drawings, GD&T, CAD models, customer and regulatory specifications.
• Demonstrated success in troubleshooting complex molding issues.

Responsibilities

• Process Development & Optimization: Develop, validate and optimize molding processes for HCR injection, compression and transfer molding.
• Training operators and technicians in molding best practices and process discipline.
• Tooling & Equipment Interaction: Partner with Tooling Engineer on gate/vent design for silicone and rubber molds, evaluate mold thermal management and production readiness.
• Cross‑Functional Collaboration: Work with NPI Engineering on feasibility reviews, new mold trials and qualification.

Skills

Process engineering

Molding

DOE

Cp/Cpk

Education

Bachelor’s degree in Mechanical, Manufacturing, Materials, Plastics or Polymer Engineering

Tools

SolidWorks

Mold flow analysis

Job description

Ingersoll Rand is seeking a Sr. Process Engineer to develop, optimize, and sustain robust molding processes for liquid silicone rubber (LSR) and high‑consistency rubber (HCR) using injection, transfer, and compression molding.

You will partner with Tooling, Production, Quality, NPI, and Maintenance teams to ensure successful launches and stable manufacturing. The role requires 5+ years in silicone/rubber molding, strong DOE/SPC experience, and the ability to interpret GD&T and CAD drawings.