Mechanical CAD Expert

We are looking for mechanical CAD experts to help train AI systems to understand engineering assemblies. You will analyse multi-part assemblies and write detailed technical questions and answers about function, design rationale and dimensions.

• Study multi-part mechanical assemblies in native CAD files and work out how the components relate and why the design is built that way.
• Write detailed technical questions for each assembly covering function, design rationale and dimensions.
• Check AI answers about assemblies and explain any errors.
• Review and improve geometric representations of assemblies.
• Record your reasoning clearly so that it can be used for training.
• Follow project guidelines, take part in calibration and review sessions, and incorporate feedback to keep quality consistent.

• Background in mechanical engineering, aerospace or industrial design with strong applied CAD knowledge.
• Ability to read engineering drawings and interpret complex assemblies.
• Experience with FreeCAD, Solid Works, CATIA or Inventor.
• Fluent written English.
• Reliable, detail-oriented, and able to work independently and meet deadlines in a remote setting.

• CSWP or CSWE certification.
• GD&T knowledge.
• Experience in aerospace or manufacturing design.

• 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.

• 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).

USD $40-80 per hour, adjusted by country of residence.