Mechanical CAD Expert

About the Role

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.

Key Responsibilities

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.

Who We're Looking For

Required Qualifications

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, SolidWorks, CATIA or Inventor.
Fluent written English.
Reliable, detail-oriented, and able to work independently and meet deadlines in a remote setting.

Preferred Qualifications

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

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