Hi Lahiru,
This is Bogdan from Romania.
I'm a mechanical engineer, specialized in the industrial robotics, 3D modeler and designer.
I have over 15 years work experience, designing, prototyping and launching different devices/systems across multiple industries.
I could help with your project.
I can design your enclosure, but as you mentioned in the description, is necessary a tight communication with the developer of the electronic board in order to have the best product.
Referring to the model, will be compulsory to know how many parts you need/want to have the enclosure, the protection degree, and more important the first purpose of my model - if you want to make the prototype by 3d printing or cnc milling/turning. there are several differences between these model, consisting mostly in the allowed tolerances and some model's features.
For any other questions, you may open a chat room here and we'll discuss about the details.
Regards
Bogdan