Hi codeforces, I was curious about how this platform worked, so I implemented my own version from scratch,It has all the essentials that an online judge has and I also added various functions such as collaborative coding and group voice chat with up to 10 users

The users can scrap problems from codeforces or they can just create their own problems

This is how it looks:

You can check it out here

and feel free to ask anything,It all was fueled by curiosity :)

Update: I recently pushed another version, it includes a complete refactor of the backend while improving on various things like handling concurrent submissions in the backend, and problem parsing has also became much faster with caching, do check it out! :)

Update 1: Im planning to add more features to the system, feel free to give any recommendations