The company had created a job listing on one website, on which I later applied. They then sent me via email the list of tasks from which I was required to do at least one, and to post it on my github account - they gave us a week of time to do it. After that, an online interview was arranged, where they asked me questions about the task I had done and later they presented me the offer, if they decide to go with me. Couple of days later, an email arrived saying that they decided to hire me, and I accepted the offer.