I applied through a recruiter. The process took 3 days.

The interview consisted of a 1:1 interview with a senior developer who posed some fairly interesting questions. Instead of a technical grilling, it was used to establish insights into my programming attitudes, e.g. my stance on comments, packages I'd consider mandatory for any project, and views on object-composition. After that, I was given the programming test, and finally brought into the office for a pairing exercise extending my submission for extra scenarios, and a general two-way Q&A with other devs and PMs. It was fairly relaxed and friendly.

I was asked to extend my code submission to cover an extra scenario.