Aerospace Injection Molding Engineer - Scientific Molding

Flint Hills Resources; Little Falls, Minneapolis, Saint Cloud, Saint Paul (MN, MN, MN, MN); On-site; USD 95,000 - 125,000; Full time

Job summary

Molex Aerospace & Defense Solutions, a Koch company, seeks a Manufacturing Engineer to advance injection molding and overmolding for high-reliability components. You will lead process development, validate tooling, and partner with Product Engineering to boost manufacturability, quality, and cost.

Responsibilities include mold qualifications, FAI, process validations, and data-driven improvements, with Lean/Six Sigma practices to reduce variation and cost.

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.

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.
• 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

Overmolding

Thermoplastics

Mold construction

Statistical process control

Root cause analysis

DOE

Scientific Molding

Moldflow

Siemens NX

Creo

Lean/Six Sigma

Education

Bachelor's degree in Plastics Engineering

Tools

Moldflow

Siemens NX

Creo

CNC

Job description

Molex Aerospace & Defense Solutions, a Koch company, seeks a Manufacturing Engineer to advance injection molding and overmolding for high-reliability components. You will lead process development, validate tooling, and partner with Product Engineering to boost manufacturability, quality, and cost.

Responsibilities include mold qualifications, FAI, process validations, and data-driven improvements, with Lean/Six Sigma practices to reduce variation and cost.