I was involved in the development of Strike Suit Zero - a game in which you control a transforming space ship, programming in C++. I had a wide variety of responsibilities including rerwritting the save system, being responsible for the audio code (FMOD) and designing and developing the DLC ships.
I worked in the run up to release, helping to fix bugs across the code base and within Lua scripts. Post launch, I worked on porting the game over to Mac and Linux, including setting up the build process on CC.NET.
The save system did not support multiple save files. This was not suitable as it meant settings such as your resolution were saved in to the Steam Cloud. Then, if you loaded up the game on a different computer, it would attempt to use your resolution from your old computer, which may not be compatible. I refactored the system to allow us to define different save files which one could then specify if they would be saved in the cloud, among other things.