Applied for position online. Soon after, recruiter contacted me, we've set up a call. Couple of days later, I've received link to Hackerrank challenge. I had a small follow-up question regarding the deadline, which I've sent by email and got no answer. I've submited the challenge anyway. Few weeks after, I've received invite for a Zoom call. 5 further interviews followed. Process was pretty interesting: besides standard coding tasks I had to do a code review, talk about Firefox architecture and architecture of a projects I worked on, my wishlist for Mozilla products and the way I would've implemented it. I really liked that part of interview and I had the impression that I am doing quite well. The only minor complaint I have here — it was not really clear where am I in interviewing process at the moment and how many interviews left to go. After the last interview, Mozilla went to radio silence. After couple of weeks, I've sent follow up email and received no answer. Few more weeks passed by and I receive very generic "copy-paste and insert name" rejection email. I've thanked the recruiter and asked if it is possible to get more specific feedback — and got no answer. Ultimately, I would've marked this experience as a positive one if communication with recruiters was not so one-sided. Of course, company does not owe me anything, but after 2 month of interviews I feel like providing some feedback or at least some answer to my emails would be a basic act of politeness. In the end, I don't think I'll want to repeat this experience and I probably would not apply for job at Mozilla again.