Contacted by their recruiter. Next day had a call with her, and within 24 hours they scheduled a phone interview for the next week. Smooth and clear, no hiccups. Phone interview was with one of their junior SWE, he was very nice and polite. We briefly talked about each others' past and current projects and went straight to the coding. Was not that hard after all, I just did not have a practice of that sort of interactive coding. The guy, again, was polite, few times gave me some small hints. At the end he confirmed that I did it correct. Recruiter contacted me next morning and asked for another phone call with more senior team members. Going to do it next week.