CJM Engineering
About CJM

Independent engineering.
A direct working relationship.

Based in Northern Ireland. Working directly with engineering consultancies and manufacturers.

Cillian McCay / Founder

You speak to the person doing the design.

Background

I’m Cillian McCay, founder of CJM Engineering. My background is in Mechatronic Engineering, and CJM brings together mechanical design, CAD, reverse engineering and prototyping.

Based in Northern Ireland, I work with engineering consultancies and manufacturers on defined work packages and additional design support. You discuss the brief directly with the engineer developing the models and drawings.

Working Together

Bring the problem, the available information and your deadline. I’ll help define the work, explain the approach and set out the cost and outputs before starting.

If I’m supporting your team, we establish your CAD version, templates and review route so the work fits your process.

Tools & Onboarding
  • SolidWorks Premium licence
  • Native CAD and agreed exchange formats
  • Professional indemnity insurance
  • Public liability insurance
  • Confidentiality terms agreed before file exchange
  • Company and insurance details for onboarding
Discuss Your Project

Tell us what needs
to move forward.

Start a project

A brief, drawing, CAD model or photographs of an existing part are enough to start a technical conversation.

© 2026 CJM Engineering
Image credits

Service images are illustrative, not CJM project photography. Fixture: Millcam. Scanning: Daviti Khukhua / Fab Academy. Printing: Integrated Micro-Electronics. CAD: SOLIDWORKS. Nissan cover reference: ModeloDrive / Carbon Fiber Hoods.