About OpenTrain

OpenTrain AI is the hiring and contracting organization for this role. OpenTrain is the #1 platform for finding and building careers in AI training and data labeling, helping specialists use their professional expertise to contribute to the development of cutting-edge AI systems.

• Remote contractor opportunity available worldwide
• Part-time schedule of 20 or more hours per week
• Pay range of $40 to $100 per hour
• Apply through OpenTrain and build a profile around your specialized skills

About AI Training Work

AI training is the human side of building artificial intelligence. People with specialized knowledge create, review, and document examples that help AI systems learn to produce more accurate and useful results.

In this role, your mechanical CAD and manufacturing judgment will help prepare high-quality parametric modeling data and feedback for AI training. Prior AI-training experience is not required because the work depends on demonstrated CAD and engineering expertise.

• Contribute to how modern AI systems understand technical design work
• Apply existing professional expertise to flexible, remote project work
• Help improve the accuracy, manufacturability, and documentation of training data

The Role

OpenTrain is seeking a Parametric CAD Modeling and Review Specialist to create, revise, and evaluate parametric 3D CAD models of mechanical parts and assemblies. You will turn detailed written briefs into robust models with dependable sketches, constraints, and feature trees.

The work combines advanced parametric modeling with practical engineering judgment across injection molding, sheet metal fabrication, CNC machining, casting, and forging. You will also document important design decisions so the resulting CAD data can support AI model training.

• Work on both individual mechanical parts and complete assemblies
• Review models for accuracy, manufacturability, specification compliance, and design intent
• Communicate technical feedback and design rationale clearly

What You'll Do

You will create and maintain consistent CAD data while identifying gaps, deviations, and risks in existing designs. Your reviews should reflect production-readiness considerations, including dimensional accuracy, tolerances, feature-tree structure, and manufacturing constraints.

• Build fully parametric 3D models from written briefs
• Edit existing models as requirements change while preserving manufacturability
• Audit dimensions, tolerances, feature trees, and design intent
• Review designs for production readiness and specification compliance
• Apply design-for-manufacturing knowledge across relevant production methods
• Document the rationale behind important modeling and design decisions
• Provide clear technical feedback in writing and conversation

Required Qualifications

You should have extensive practical experience with parametric CAD platforms and the ability to create robust, reusable models of mechanical parts and assemblies. The experience guidance provided for this work is four or more years for model editing assignments or ten or more years for complex model creation assignments.

• Professional experience with FreeCAD or comparable parametric CAD platforms
• Strong experience with Autodesk Fusion 360, SolidWorks, Inventor, or similar tools when applicable
• Applied knowledge of GD&T, including ASME Y14.5 or an equivalent standard
• Design-for-manufacturing expertise across at least two or three relevant processes
• Ability to handle assembly-level modeling and single-part work
• Ability to assess dimensional accuracy, tolerances, manufacturability, and design intent

Helpful Background

The following experience can strengthen your application, particularly when it supports efficient modeling, cross-platform collaboration, or deeper review of existing CAD data.

• Professional FreeCAD experience
• Experience transferring knowledge between parametric CAD platforms
• Reverse engineering, including scan-to-CAD or point-cloud conversion
• CAD automation or scripting with Python, iLogic, NX Open, or VBA
• Strong written and verbal communication
• High attention to detail and practical problem-solving ability

Work Arrangement and Compensation

This is a remote, project-based contractor opportunity involving CAD modeling, editing, review, and documentation. The position is listed as part-time with a time requirement of 20 or more hours per week, and work is available worldwide.

The supported pay range is $40 to $100 per hour in USD. Your work may include creating complex models, editing existing designs, reviewing production considerations, and preparing documentation for AI training.

• Employment type: Contractor and part-time
• Time requirement: 20+ hours per week
• Location: Worldwide and remote
• Compensation: $40 to $100 per hour
• Language: English

How to Apply Through OpenTrain

Create a free OpenTrain account and present your CAD, manufacturing, and engineering experience in your profile. Highlight the parametric platforms, manufacturing processes, GD&T standards, reverse engineering work, and automation tools you have used.

OpenTrain helps specialists discover AI-training work, apply in minutes, and build a career profile that reflects their expertise. This opportunity is designed for experienced CAD professionals who want to bring practical engineering judgment to the fast-growing AI-training industry.

• Create or update your free OpenTrain profile
• Describe your parametric CAD and assembly-modeling experience
• Include relevant manufacturing, GD&T, reverse engineering, and automation skills
• Apply for the remote contractor opportunity through OpenTrain