Aerospace Injection Molding Engineer — Process Lead

Molex; Minneapolis (MN); On-site; USD 95,000 - 125,000; Full time

Job summary

Molex Aerospace & Defense Solutions in Minnesota is seeking a Manufacturing Engineer to develop, validate, and optimize injection molding and over-molding processes for high-reliability aerospace components. You will lead process development, work with Product Engineering, Operations, Quality, and Tool Room to meet quality, cost, and regulatory requirements.

Responsibilities include leading mold qualifications, DOE-based process development, data-driven decisions, and supporting new product

Qualifications

• Bachelor's degree in Plastics Engineering, Mechanical Engineering, Manufacturing Engineering, or a related technical field.
• 5+ years of experience supporting injection molding, overmolding, or related plastics manufacturing processes.
• Experience with thermoplastic materials, molding process optimization, tooling systems, and process validation.
• Knowledge of mold construction, statistical process control, and root cause analysis.
• Ability to interpret engineering drawings, tooling designs, and product specifications.
• Strong communication and collaboration skills.

Responsibilities

• Develop, validate, optimize, and sustain injection molding and overmolding processes.
• Lead process development using Scientific Molding, DOE methodologies, and data-driven decision making.
• Partner with Product Engineering to improve manufacturability, quality, and cost.
• Evaluate mold designs, tooling concepts, material selection, and process parameters.
• Lead mold qualifications, capability studies, First Article Inspection (FAI), and production validations.
• Troubleshoot molding, tooling, and process issues using root cause analysis and corrective actions.
• Establish process windows, controls, and documentation to ensure consistent product quality.
• Support DFM, PFMEA, risk assessments, and new product introductions.
• Work closely with the internal Tool Room to develop, modify, maintain, and optimize molds and tooling systems supporting new products, process improvements, and production reliability.
• Partner with production technicians and operators to standardize processes, resolve manufacturing challenges, and drive continuous improvement.
• Improve safety, quality, throughput, yield, and cost using Lean Manufacturing and Six Sigma principles.

Skills

Injection molding

Process optimization

Statistical process control

Root cause analysis

Mold design interpretation

Education

Bachelor's degree in Plastics Engineering, Mechanical Engineering, Manufacturing Engineering, or related field

Tools

Moldflow

Siemens NX

Creo

Job description

Molex Aerospace & Defense Solutions in Minnesota is seeking a Manufacturing Engineer to develop, validate, and optimize injection molding and over-molding processes for high-reliability aerospace components. You will lead process development, work with Product Engineering, Operations, Quality, and Tool Room to meet quality, cost, and regulatory requirements.

Responsibilities include leading mold qualifications, DOE-based process development, data-driven decisions, and supporting new product