I applied through an employee referral. The process took 3 weeks. I interviewed at Stripe in Sep 2018
Interview
One of the best interview styles I've witnessed. Applied online with a referral, received a HackerRank challenge. Challenge was pretty simple but different than your typical DS/algorithm question. It was more related to Stripe itself and seemed concentrated on coding style and design. Heard back about two weeks later to set up an phone interview. I was able to schedule my interview only a few days ahead. Phone interview had a similarly-styled question with a follow-up if you complete the first part. Recruiter was kind and attentive. Thought I did pretty well but I received a rejection the next day. Overall the experience was really good - recruiters emailed back within hours when I asked questions and I got feedback from my interview in less than 24 hours.
There was a recruiter call where they told me what to expect for the next couple rounds. I had a call with the hiring manager and technicals with 2 other engineers.
I applied and got an interview offer in about 2 weeks. I interviewed with someone from the US even though i applied for Bucharest. A bit of introduction and HR style questions in the beggining, followed by 2 problems.
The first step is a HackerRank challenge, typically 60 minutes long, consisting of one question broken into 3 parts/sub-tasks. The question is implementation-heavy rather than a typical dynamic programming or graph puzzle.