I apply mid/senior software developer(Shanghai) on LinkedIn. A few days later, a HR contact me on LinkedIn and we have a short phone chat the next day. She asked me why I want to move and go through my past working experiences. She seems don't satisfy with my answer about why Optiver. About twenty minutes later she said I was not suitable for this role which requires a full understanding of the whole trading system, performance tuning, etc. I'm really excited about the coming technical interviews. What a pity!

Hacker Rank test and a skype interview moderate to easy hacker rank test, took about 2:30 hrs, contained 5 multiple choice questions and three coding tasks the last coding task needs the most of the time the interview was mostly about checking personality and communication skills, and also contained some questions about skills and previous projects,