Manufacturing Process Engineer - Extrusion Blow Molding

Flexcraft; Neptune City (NJ); On-site; USD 90,000 - 130,000; Full time

Job summary

Flexcraft is growing—and we’re hiring a hands‑on Process Engineer with extrusion blow molding experience to help improve performance, reduce scrap, and support new product launches. If you’re currently working in plastics manufacturing and want a role where you can own the process, solve real problems, and drive measurable result, this is worth a look.

This onsite role supports a 24/7 manufacturing operation, requiring presence on the production floor and collaboration with multiple teams to

Qualifications

• 5+ years of process engineering experience in plastics manufacturing.
• Hands-on experience with extrusion blow molding strongly preferred.
• Proven ability to troubleshoot and optimize processes in production.
• Strong understanding of materials, tooling, and molding equipment.
• Experience with SPC, DOE, or Six Sigma tools (preferred).
• Comfortable working on the production floor—not just at a desk.

Responsibilities

• Optimize processes to improve cycle time, quality, and efficiency.
• Troubleshoot production issues directly on the floor.
• Lead root cause analysis and implement permanent solutions.
• Support new product launches, mold trials, and validations.
• Partner with Production, Maintenance, and Quality teams.
• Develop SOPs and standardize best practices.

Skills

Process engineering

Extrusion blow molding

Troubleshooting

Materials & tooling

SPC / DOE / Six Sigma

Tools

DOE

Six Sigma

SPC

Job description

Flexcraft is growing—and we’re hiring a hands‑on Process Engineer with extrusion blow molding experience to help improve performance, reduce scrap, and support new product launches.

If you’re currently working in plastics manufacturing and want a role where you can own the process, solve real problems, and drive measurable results, this is worth a look.

Why Engineers Make the Move

• Competitive salary based on experience (aligned to experienced plastics engineers)


• Work directly on blow molding processes—not just theoretical work


• High-visibility role with ownership of scrap, cycle time, and uptime


• Opportunity to implement improvements, not just recommend them


• Stable, growing manufacturing environment

What You’ll Be Working On

• Extrusion blow molding processes


• Polymer materials and process parameters


• Cycle time, scrap reduction, and productivity improvements


• Tooling, molds, and equipment performance


• New product launches and process validation

What You’ll Do

• Optimize processes to improve cycle time, quality, and efficiency


• Troubleshoot production issues directly on the floor


• Lead root cause analysis and implement permanent solutions


• Support new product launches, mold trials, and validations


• Partner with Production, Maintenance, and Quality teams


• Develop SOPs and standardize best practices

What We’re Looking For

• 5+ years of process engineering experience in plastics manufacturing


• Hands‑on experience with extrusion blow molding strongly preferred


• Proven ability to troubleshoot and optimize processes in production


• Strong understanding of materials, tooling, and molding equipment


• Experience with SPC, DOE, or Six Sigma tools (preferred)


• Comfortable working on the production floor—not just at a desk

Work Environment & Schedule

This is an onsite, hands‑on role supporting a 24/7 manufacturing operation.

The position requires regular presence on the production floor and alignment with 12-hour production shifts as needed to support troubleshooting, process improvements, and key production activities.

This structure allows you to be closer to the process, respond in real time, and make faster, more effective improvements—not just analyze problems after the fact.

A typical day could include troubleshooting a process issue on the floor, running a trial, and working directly with operators to stabilize and improve performance.

About Flexcraft

Flexcraft is a family‑owned manufacturing company with over 50 years of experience and a growing nationwide presence.

Our Culture: We OWN IT

• Ownership – We take accountability and drive results


• Workmanship – We take pride in quality


• Never Settle – We continuously improve


• Integrity – We do the right thing


• Team First – We win together

If you like being close to the process and making improvements that stick, you’ll fit in here.