CNC Machinist - AI Training Contractor

About OpenTrain

OpenTrain is the #1 platform for finding and building careers in AI training and data labeling. OpenTrain AI hires and contracts contributors for projects where real-world expertise helps improve the quality, usefulness, and reliability of modern AI systems.

• Remote contract work with a flexible schedule
• 20+ hours per week
• Work available worldwide
• Hourly pay of $50-$100 USD

About AI Training Work

AI training is the human side of building artificial intelligence. Models learn from examples prepared, reviewed, and evaluated by people with practical knowledge. In this role, your experience with machining processes, tooling, inspection, and quality control will help AI systems better understand real-world CNC production.

• Contribute to cutting-edge AI development
• Use your professional domain expertise rather than prior AI experience
• Work remotely as part of a growing AI training industry

The Role

OpenTrain is recruiting CNC Machinists to contribute expertise in advanced part production and process optimization. This part-time contractor role involves evaluating and collecting information related to CNC machining workflows, setups, production processes, and quality control.

• Employment type: Contractor and part time
• Subject area: CNC machining for AI training
• Language: English
• Experience level listed for the project: Entry level

What You’ll Do

• Set up and operate hobbyist CNC machines such as the Makera Carvera and industrial machines such as the Haas VF-2.
• Load and verify CNC programs, install tooling, configure work-holding, and set work offsets.
• Run first-piece cycles and inspect machined parts against drawings.
• Adjust setups to ensure dimensional accuracy.
• Perform routine machine maintenance and diagnose tool wear, chatter, dimensional drift, and related issues.
• Use calipers, micrometers, indicators, and CMM equipment to validate parts.
• Interpret engineering drawings, GD&T callouts, and manufacturing documentation.
• Collaborate with CAM programmers and provide feedback on setup optimization and manufacturability.

Required Qualifications

This role is designed for contributors with substantial hands-on CNC experience and strong technical communication skills. Prior AI-training experience is not required; practical machining knowledge is the focus.

• At least 5 years of hands-on CNC machining experience, including both setup and production
• Expertise operating Haas control systems, including VF-2 or similar platforms
• Proficiency in blueprint reading and GD&T interpretation
• Experience using precision measurement instruments, including calipers, micrometers, indicators, and CMMs
• Experience working with metals and plastics
• Ability to troubleshoot machining processes and optimize setups
• Outstanding written and verbal English communication skills

Helpful Background and Compensation

Familiarity with hobbyist or desktop CNC platforms is preferred, including systems such as the Makera Carvera. Compensation for this project is listed at $50-$100 USD per hour, with a maximum hourly rate of $100.

• Preferred: Experience with hobbyist or desktop CNC platforms
• Pay range: $50-$100 USD per hour
• Availability: 20+ hours per week
• Work location: Worldwide and fully remote

Build Your AI Training Career

By joining OpenTrain, you can apply your CNC expertise to projects shaping how AI systems understand specialized technical work. OpenTrain helps contributors discover opportunities, build a profile, and grow a career in the fast-moving field of AI training and data labeling.

• Work on projects that push the boundaries of AI
• Maintain a flexible remote schedule
• Build a portfolio of AI training work across multiple projects