Hi there. I am just curious about these different roles within companies. Could anyone (scientists, chemists or R&D engineers) tell me more about these positions? What do they actually do?

Or anyone who knows what are the main criterion to enter these professions? If you have other useful resources (contacts), could you email me at c.cheen@gmail.com?

Please advise.

Cheers.

Could anyone give some suggestions, ideas or opinions please?