Recruiter reached out to me on LinkedIn, and I met with hiring manager that same week.
After that, the process was very fast. They sent me a coding challenge link and asked me to finish it over the weekend, then scheduled the final round for the following week. All in all, the interviewing process took 2 weeks.

Coding challenge - the recruiter sent me a link for a coding challenge that started timing once opening. I was given 3 hours to complete to challenge. The problem wasn't super difficult algorithmically speaking, but required a decent amount of coding, as well as writing some test cases for that code. Then, you submit and it runs against their test cases as well. I got the vast majority of their test cases working but a few failed, though I don't know why as the test cases were hidden. Despite this, I moved on to the next round.

Final round - The final round consisted of 3 coding exercises (leetcode style, ranging from easy to hard). I completed all 3, though one was failing as it failed performance tests- it required a dynamic programming solution to pass, which I did not do. I also had a frontend interview- I am not an experienced frontend developer but the interview was conversation based, not actual implementation based.

I recieved a verbal offer, but after talking to the engineers on the team, it was clear that the position was not a good fit for my interests so I turned it down.