I don't think Jesper Kyd knew how to code when he did Hitman' soundtracks. These companies program their games in C++ so it makes sense to know the rough basics (go on codecademy and follow a tutorial on openclassroom for that. In two weeks, you will still be sh*t but at least, you will understand what your colleagues are talking about). Read a things or two about Unity and Maya as well. Showing you understand the working environment will reassure your employer.

Regarding the AAA references, it's almost impossible to achieve the regular way if you havn't already work for an A-List company. (This is an age-old paradox. People want experience, but no one will offer you the chance to get this experience. It's a vicious circle).

So - in my opinion - there are three other paths to consider:
1- Place a song in an A-list movie or video game through classic publishing. It can be considered as a relevant experience.
2- Work for a small company that creates quality games. You won't have a huge reference, but you will have experience.
3- Network with the right people, be their pal and pull strings.