Got contacted by one of their recruiters. Discussed background, and found positions that fit my skills to apply for.
First there's an online test (codility - two questions), then one or two technical phone screens. 1-2 weeks later, they got back to me and wanted to set up on-sites. Full day of technical interviews (4-5 + a shorter one at lunch), and met with the hiring manager at the end.
The process was smooth. All of the interviewers were friendly, and really seemed to enjoy working there. The recruiters were flexible with scheduling, and didn't leave me hanging between steps.