PentaCast Inc

Business Location

Strathroy, Ontario

Work Place Location

In Person

Apply By

October 15, 2026 at 12:00am

The CNC Programmer / Operator / Machinist is responsible for programming, setting up, operating, and troubleshooting CNC machining equipment used to produce precision-machined components. The position works from engineering drawings, specifications, CAD/CAM data and production requirements to ensure parts meet dimensional, quality and production standards.

Key Responsibilities

- Program, set up and operate CNC mills, lathes and other CNC machining equipment.
- Develop, test and optimize CNC programs for new and existing cast components.
- Read and interpret engineering drawings, blueprints, GD&T; and machining specifications.
- Determine appropriate tooling, work-holding, cutting tools, speeds, feeds and machining processes.
- Set machine offsets, tool lengths, work coordinates and cutting parameters.
- Perform machine setups, including fixtures, tooling, work-holding and first-piece production.
- Prove out new CNC programs and adjust to ensure secure and accurate operation.
- Modify existing programs to accommodate casting variations, engineering changes, tooling changes and production improvements.
- Troubleshoot machine problems including dimensional variation, tool wear, chatter, surface finish and machine/program issues.
- Perform in-process and final inspection using calipers, micrometers, gauges, indicators, bore gauges and other precision measuring equipment.
- Verify first-off parts and ensure production remains within specified tolerances.




- Identify quality issues and make appropriate machine/program adjustments.
- Deburr, clean and finish machined components as required.
- Maintain accurate production, inspection and quality records.
- Work closely with Quality, Engineering, Maintenance and Production to resolve manufacturing issues.
- Assist with initiatives focused on productivity, scrap reduction, cycle-time improvements and machining efficiency.
- Perform routine machine maintenance and tooling changes.

CNC Programming Responsibilities

- Create CNC programs from engineering drawings and models.
- Utilize CAD/CAM software to generate and optimize tool paths.
- Edit G-code and machine-control programs as required.
- Select appropriate machining strategies based on material, casting geometry, tolerances and production volume.
- Optimize programs for cycle time, tool life, quality and repeatability.
- Transfer and maintain CNC programs for multiple machines.
- Document program revisions and maintain appropriate program-control procedures.

Quality & Inspection

- Conduct first-piece, in-process and final inspections.
- Use precision measurement equipment including:
- Calipers
- Micrometers
- Height gauges
- Dial indicators
- Bore gauges
- Pin gauges
- Thread gauges
- Other specialized inspection equipment





- Interpret dimensional requirements and tolerances.
- Identify and report non-conforming material.
- Work with the Quality Department to investigate root causes and implement corrective actions.
- Support SPC and other quality-control activities where required.

Education

Post Secondary Education

Qualifications

Experience Required
- Completion of a CNC Machining, General Machinist or equivalent technical program
- CNC machining experience in a manufacturing environment.
- Strong CNC programming and machine setup experience.
- Experience with CNC mills and/or lathes.
- Strong ability to read and interpret engineering drawings.
- Knowledge of GD&T;, machining tolerances, cutting tools, speeds and feeds.
- Experience with CAD/CAM programming is an asset.
- Experience with CNC controls such as Fanuc, Haas or similar is an asset.
- Strong knowledge of precision measurement and inspection techniques.
- Experience machining aluminum, zinc or other cast components
- Strong mechanical aptitude and troubleshooting ability.
- Ability to work independently with minimal supervision.
- Strong attention to detail and commitment to quality.
- Good communication and teamwork skills.

Physical/Work Environment

Ability To

- Work in an environment with exposure to noise, metalworking equipment and industrial conditions
- Stand for extended periods
- Lift and handle tooling, fixtures and components
- Be comfortable working around CNC machinery and other industrial equipment
- Must comply with Utilize required PPE and workplace safety procedures.

📌 CNC Programmer/Operator/Machinist (Strathroy)
🏢 Work in Middlesex
📍 Strathroy