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CNC Mill Machinist

Job in Houston, Harris County, Texas, 77001, USA
Listing for: Aerotek
Full Time position
Listed on 2026-07-20
Job specializations:
  • Manufacturing / Production
    CNC Machinist, Machine Operator, Manufacturing & Industrial Operations
Job Description & How to Apply Below

CNC Mill Machinist

This role focuses on machining new and repair parts to precise print specifications using CNC vertical mills and horizontal boring mills in a high-volume, clean, and climate-controlled shop. You will set up, operate, and adjust CNC equipment with Fanuc, Mazatrol, or Tosnoc controls to produce medium-sized components for large control flow valves within tight tolerances.

Responsibilities
  • Set up and operate CNC vertical mills and related equipment to machine new and repair parts to print specifications.
  • Run a CNC vertical mill with Mazatrol controls or a CNC Johnford vertical mill with Fanuc controls, ensuring accurate and efficient production.
  • Operate a Toshiba BP 150 horizontal boring mill (HBM) with Tosnoc controls when required, focusing on precision machining tasks.
  • Machine medium-sized parts for large control flow valves, primarily square or rectangular components, performing top milling, facing, and drilling operations.
  • Handle parts ranging from approximately 15–25 inches outer dimension and weighing between 30 and 1,000 pounds, using proper setup and handling techniques.
  • Perform complete machine setups, including fixturing, tooling selection, and program loading, to meet job specifications.
  • Make program edits and adjustments as needed to maintain dimensional accuracy and part quality.
  • Machine parts to tight tolerances down to ±0.001 inch, verifying dimensions and quality throughout the process.
  • Use Fanuc or Mazatrol controls and apply G and M codes to operate and adjust CNC programs effectively.
  • Cross-train to run a standard CNC lathe with Fanuc controls, supporting additional machining needs as required.
  • Collaborate with team members and supervisors to prioritize work, resolve machining issues, and maintain production flow.
  • Follow all safety procedures, maintain a clean work area, and contribute to the overall organization and efficiency of the shop.
  • Work extended hours and night shifts, including weekends when needed, to support high production demand.
Essential Skills
  • At least 5 years of experience as a CNC mill machinist.
  • A minimum of 3 years running a vertical mill.
  • Proven experience performing complete CNC setups and program edits.
  • Demonstrated ability to machine parts to tolerances of ±0.001 inch.
  • Hands-on experience with Fanuc or Mazatrol controls.
  • Proficiency with G and M codes for CNC programming and operation.
  • Experience operating CNC milling machines, including vertical mills and vertical machining centers.
  • Experience operating CNC lathes, or strong willingness to cross-train on CNC lathes with Fanuc controls.
  • Ability to safely handle and machine parts ranging from 15–25 inches OD and 30–1,000 pounds.
  • Capability to work extended hours and night shifts, including 60+ hour weeks when required.
Additional

Skills & Qualifications
  • Experience running Johnford, HNK, or SNK brand vertical mills.
  • Experience operating a Toshiba BP 150 horizontal boring mill (HBM) with Tosnoc controls.
  • Prior experience machining components for large control flow valves or similar industrial equipment.
  • Comfort working in a high-volume environment with significant overtime when workloads are high.
  • Interest in cross-training on additional machines and expanding technical skill sets.
Why Work Here?

You will join a busy operation that offers consistent work and the opportunity to earn substantial overtime through extended hours. The environment supports skill growth, with the chance to learn and cross-train on multiple machines and control systems. You will work in a clean, air-conditioned shop that values productivity, precision, and continuous learning, providing a stable setting for long-term engagement and potential conversion to a more permanent role based on performance and workload.

Work

Environment

The role is based in a clean, air-conditioned shop designed for comfort and productivity during long shifts. You will work with CNC vertical mills, including Johnford and similar brands, as well as a Toshiba BP 150 horizontal boring mill with Tosnoc controls, all equipped with modern control systems such as Fanuc and Mazatrol. The position is an open-ended contract expected to run through the end of the year and well…

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