A way of expressing the first law of thermodynamics is that any change in the internal energy (âE) of a system is given by the sum of the heat (q) that flows across its boundaries and the work (w) done on the system by the surroundings:
Titles don't really mean much. Design Engineer or Associate Engineer mean something only in the confines of the company in which they are used. If you want a definition of different levels of engineers, use the definitions given by ASCE or one of the other professional societies.
These titles and others shift a lot from company to company in the games industry. Project manager: someone who makes sure the team stays on task, isn't blocked, and that deadlines are hit. In some companies this is called an associate producer. Product manager: Also sometimes known as program manager, or even as executive producer. This is someone who is responsible for an entire product (or sometimes a portion of it, if working on a large team with a more senior manager).