The thing you're looking for is called "git-svn". It's built into git, and it lets you use git with your office's svn repository.
You do have to accept some constraints in order to use it successfully -- basically, git-svn doesn't seem to understand merging back-and-forth between different branches very well, so it encourages a much more linear, one-branch workflow than git does -- but it is still a huge improvement over stock svn, and it lets you inch your way into git, and gives you a platform from which you can lure your fellow employees into git one at a time.
You do have to accept some constraints in order to use it successfully -- basically, git-svn doesn't seem to understand merging back-and-forth between different branches very well, so it encourages a much more linear, one-branch workflow than git does -- but it is still a huge improvement over stock svn, and it lets you inch your way into git, and gives you a platform from which you can lure your fellow employees into git one at a time.