CNC Manufacturing Process Engineer

Threadlock Precision is a rapidly growing engineered component manufacturing organization serving leading aerospace and defense customers, including OEMs and Tier 1/Tier 2 suppliers. Backed by strong financial support and positioned for continued expansion, we are investing in our people, capabilities, operations, and commercial strategies to support long‑term growth and meet increasing demand across complex, high‑precision manufacturing programs.

We are currently hiring a CNC Manufacturing Process Engineer at our R&S Machining plant located in St. Louis, Mo. The Work We Do Matters! Our products support the defense industrial base and ensure that the men and women serving our country have reliable, high‑quality equipment.

Reporting to our Engineering Manager, you will have the unique opportunity to help shape and scale a growing manufacturing platform at a critical stage of expansion.

As a CNC Manufacturing Process Engineer
, you will be instrumental in supporting and improving our precision CNC Machining Operation that includes milling, turning, and multi‑axis machining applications. As a technical bridge between engineering, programming, tooling, quality, production, and operations leadership, you will work directly with machinists, quality, engineering, tooling suppliers, and operations leadership to improve safety, quality, delivery, cost, and throughput.

• Partner and collaborate with customers on product design and manufacturability.
• Develop, document, and improve CNC manufacturing processes for new and existing work, including routing, setup strategy, tooling requirements, machining methods, and production readiness.
• Translate engineering drawings, models, customer requirements, and GD&T into practical manufacturing plans that support quality, repeatability, delivery, and cost targets.

• Create, revise, and validate CNC machining programs.
• Perform prove‑outs on production machines and verify feeds, speeds, tooling, offsets, fixturing, and setup conditions before production release.
• Partner with machinists, operators, quality, and production leadership during setup, first‑piece, first‑article, production launch, and ongoing production support activities.

• Identify and implement improvements that increase throughput, improve repeatability, reduce variation, and strengthen overall CNC process performance.
• Optimize cycle time, tool life, machine utilization, setup time, operator efficiency, and production flow while reducing scrap, rework, non‑value‑added activity, and recurring production constraints.

• Design, specify, or improve custom fixtures, tooling packages, and machining strategies to support repeatability, quality, cycle time, and cost targets.
• Work with machinists, tooling vendors, and internal teams to evaluate cutting tools, tool holders, inserts, fixtures, and other machining resources.

• Troubleshoot machining and process issues on the shop floor and implement corrective actions related to programs, tooling, fixturing, setup, machine conditions, and process methods.
• Identify root causes, improve process stability, and help remove barriers to quality, delivery, and throughput.

• Create and maintain manufacturing work instructions, setup sheets, tooling lists, process instructions, and controlled documentation to support consistent execution.
• Collaborate with Quality to resolve dimensional issues, repeatability concerns, inspection gaps, and customer requirement concerns while supporting AS9100 and internal quality requirements.

• Train machine operators on new programs, setups, tooling, and process changes.
• Mentor less experienced engineers, machinists, programmers, and technical team members to strengthen internal CNC machining capability.

This position requires compliance with U.S. export control laws and regulations. As such, candidates must be a “U.S. Person” as defined by applicable law (e.g., U.S.…