Game music has different styling. As far as I know, game music has different song structure. Loops, transitions of one track into another... Game music must adjust swiftly to whatever is going on your screen, but if you say you are veteran, I think it's nothing you cannot handle.
The biggest problem is money. Or to be precise - lack of it
. Modding groups are mostly hobbysts working on non-profit basis. Indie games market is a little bit different, as people investing their own money or go crowdfunding. Still, they are minority. Many indie projects came out because people with no money spent lot of time working on non-profit basis, and real cash came after release.
Still, this place raised some prominent examples of former modders now working in professional gaming industry. The best example I know is Gareth Cooker aka GenericCorvette. He was working on Earth Defence, than he was hired to work on InMomentum game and now he composed music to Ark survival sandbox game. The last is very popular today, and also big commercial success.
What exactly are you looking for? I'm sure you can easily find people here involved in various gaming and modding projects, but this is proper place rather for looking for hobbyst projects.