Have you worked with version control systems?

Yes, I have worked with version control systems such as Git and SVN. I used them to manage source code, keep a history of changes, and work with branches and merges. For example, in Git, you can create a new branch for developing a new feature and then merge it into the main branch after testing:

git checkout -b feature/new-feature
# work on the code
git commit -am "Added new feature"
git checkout main
git merge feature/new-feature

This allows for collaborative work and helps avoid conflicts.