The in-house recruiter reached out to me via Vettery, and I ended up having a great conversation over the phone. He went over job details and told me about Interactive Brokers team and the company, we also talked about other industry related topics.
The next step was an online Codility test, and then I moved on to the next round. Since this was during the Covid-19 pandemic, the next round of the interview was coordinated through GoToMeeting. The interview was with two of the hiring managers. The first asked me a lot of in depth Java questions and few other technical questions. The 2nd manager was interested in my general industry knowledge and interests. He ask many technical questions, but not all related to software development. He was evaluating how much I paid attention to the developing technologies, how they are utilised in software development or applied in everyday life.
Overall I had a very positive experience and learned a few new things along the way. Just from the conversations alone I can see that there are many smart and talented engineers at IB.