Why I said that Jenkins is our best friend?
First, Jenkins is a Continuous Integration Server.
Jenkins is the team member who is the responsible and charge of to download the code from SCM, run test, build artifact, upload the artifacts in the repository manager (Nexus Repository, Archiva, Artifactory), run automation test and deploy.
As you can see Jenkins can do a lot of things for you, some of them I mentioned before even more things than that.
But, this is a just a tool. Your team need to develop some skills like write test, commit frequently and so on.
Also, you can install very useful plugins according your needs.