I’ve been working in C++ in embedded environments for a number of years, developing navigation applications. There is a gaming company in my hometown that I like the look of, but I don’t have game development experience. You could consider a navigation app as a type of game, depending on who you are running from.
My question is, what steps should I take to enter the industry? Is it a bad idea to enter the industry at this stage (I’m 30)?
Being 30 doesn’t really matter, you can enter the games industry at any age assuming you have the drive and ability.