Parametric CAD Design and Review Specialist

About OpenTrain

OpenTrain AI is the hiring and contracting organization for this role and the #1 platform for finding and building careers in AI training and data labeling. OpenTrain connects specialists with meaningful projects, helping contributors apply their expertise to advanced AI development while building a durable professional portfolio.

About AI Training Work

AI training is the human side of building artificial intelligence. Experts prepare, review, and explain examples so AI systems can learn how to reason about specialized tasks. In this project, your mechanical engineering judgment, CAD expertise, and design documentation will help evaluate and improve AI capabilities in parametric design.

• Work remotely from anywhere in the world
• Contribute to cutting-edge AI development
• Use specialized professional expertise in a flexible contract role

The Role

OpenTrain is seeking a Parametric CAD Design and Review Specialist for a contractor project focused on mechanical design and AI training. You will create, revise, and assess three-dimensional models and technical drawings while documenting design decisions, model edits, audit findings, and manufacturability considerations.

The work combines production-oriented mechanical engineering practice with careful evaluation and explanation. You should be able to perform edit-level work with at least four years of hands-on parametric modeling experience, or complex creation work with ten or more years of experience.

• Engagement: Contractor, part time
• Expected availability: 20+ hours per week
• Location: Worldwide and fully remote
• Language: English
• Rate: $30–$100 USD per hour

What You'll Do

You will develop and review parametric mechanical designs from detailed written briefs, applying sound modeling practices and practical production judgment. You will also communicate precise, solution-oriented feedback in both written and verbal formats.

• Develop fully parametric 3D CAD models of mechanical parts and assemblies
• Edit existing models to meet revised requirements while preserving robust parametric structure
• Audit models for dimensional accuracy, tolerances, manufacturability, and production readiness
• Create and interpret technical drawings using ASME Y14.5 or an equivalent GD&T standard
• Apply design for manufacturability principles to injection molding, sheet metal, CNC machining, and casting or forging
• Document the rationale behind design decisions, model edits, and audit findings for AI training
• Manage assembly-level designs and complex mechanical systems
• Provide clear, precise, and solution-oriented technical feedback

Required Qualifications

This role requires strong Autodesk Inventor expertise and the ability to work with comparable parametric CAD platforms. Candidates should bring practical experience with geometric dimensioning and tolerancing, manufacturability reviews, complex assemblies, and technical documentation.

• At least four years of hands-on parametric modeling experience for edit-level work, or 10+ years for complex creation work
• Strong Autodesk Inventor or comparable parametric CAD modeling experience
• Experience with assembly-level mechanical design and complex mechanical systems
• Practical experience applying ASME Y14.5 or an equivalent GD&T standard
• Experience reviewing models for dimensional accuracy and production readiness
• Design for manufacturability knowledge across multiple manufacturing processes
• Clear technical documentation and stakeholder communication skills

Helpful Background

Prior professional experience with FreeCAD is ideal. Experience with other parametric CAD tools and technical workflows can also be highly relevant, particularly when combined with strong mechanical design judgment.

• FreeCAD, SolidWorks, or Fusion 360 experience
• Reverse engineering or scan-to-CAD experience
• Point-cloud-to-model reconstruction experience
• CAD automation using Python, iLogic, VBA, NX Open, or similar tools

Why Work With OpenTrain

OpenTrain gives specialists the opportunity to contribute real-world expertise to the development of advanced AI systems. This role offers flexible, remote work while allowing you to apply your mechanical CAD strengths to a fast-growing field where expert human judgment is essential.

• Flexible part-time contract work
• Remote participation from anywhere worldwide
• Meaningful work at the intersection of mechanical engineering and AI
• An opportunity to build experience and a professional portfolio in AI training