There are other sets of codes related to Hive that can also be found in that repository
You can create an account and start to interact with some of the ISSUES on one of the projects.
You can interact with open "issues"
Add and start a discussion about a new issue
You can even add code that is reviewed by others and maybe add something to one of these projects. Note that adding to the HIVE project itself is not as common and needs to be thoroughly tested. But there are are many projects available to be a part of if you're a skilled developer for example.
Perhaps you'll also find that as you start adding valuable insights and or code the other people contributing to the project will find more and more ways and reasons to involve you in future features.
. Main authors presently: 
