CAD Data Generation & Validation Specialist (FreeCAD)

About the Role

We are looking for CAD specialists to produce and validate parametric CAD models for AI training datasets. You will build a library of mechanical parts and assemblies in FreeCAD and run quality checks against engineering standards.

Key Responsibilities

• Build, edit and check accurate parametric CAD models in FreeCAD, with attention to geometric precision and good engineering practice.

• Create a varied library of mechanical parts, assemblies and features for use in datasets.

• Apply GD&T so that models match real-world design standards.

• Review CAD data for quality, resolve inconsistencies and keep engineering documentation.

• Script repetitive modelling steps where it helps.

• Act on feedback and revision requests promptly.

• Follow project guidelines, take part in calibration and review sessions, and incorporate feedback to keep quality consistent.

Who We're Looking For

Required Qualifications

• 2+ years in mechanical design, CAD modelling, manufacturing or industrial engineering.

• Strong parametric modelling experience in FreeCAD or equivalent software.

• Skill in CAD validation and the application of GD&T to manufacturing scenarios.

• Clear written English.

• Reliable, detail-oriented, and able to work independently and meet deadlines in a remote setting.

Preferred Qualifications

• Python scripting for CAD automation.

• Experience with FreeCAD workbenches and assemblies.

• Experience contributing to open-source CAD projects.

Rights, Confidentiality and Data Handling

• Submit only work that you created yourself or that you have the right to share.

• Do not submit material covered by an employer, client or third-party confidentiality agreement, or material you have no right to share.

• Do not submit export-controlled, military or defence-related technical data.

• Remove credentials, secrets and personal data from anything you submit.

• Rex may ask for evidence of ownership or licence, may verify submissions, and may reject or remove any submission.

Legal and Compliance Notice

• All content you submit must be lawful, and you must have the right to share it.

• Do not submit confidential or proprietary material belonging to an employer, client or third party, or personal data without a lawful basis.

• Rex may verify identity, credentials, ownership and licensing; may reject or remove any submission; and may report unlawful submissions to the relevant authorities.

• Engagement and payment are subject to successful verification and to applicable sanctions, export-control, tax and employment laws.

• The contractor agreement will set out ownership and licence terms for the work you deliver (to be confirmed by Rex Legal).

Compensation

USD $40–100 per hour, adjusted by country of residence.