C3 AI Data Science interview questions

After a phone screening, they sent me an online multiple choice test with machine learning questions and a short coding exercise. Then I had a coding interview by Skype and a collaborative coding website (1 hour long). The coding was in python. After this, I had a double interview (30 minutes each) with data scientists from Redwood City, still by Skype, with ML questions about classic algorithms, feature selection techniques, deep learning etc. and more high-level questions about client interactions. The process continued with interviews with the Data Science VP and executives, then a final interview with the CEO. These interviews were more centered on motivation and behavior (how I dealt with difficulties in previous projects, etc.). Since I applied for the Paris office and most people are based in Redwood City, all the interviews were done by Skype. During the whole process, people were super friendly and answered my questions.

The overall interview process is smooth, well thought out, and you can count on team's support along the way. The interview consists of personal and technical parts. First I was tested on technical abilities. I completed a HackerRank screen, a phone interview, and then onsite technical interviews. The HackerRank screen mainly tests your basic machine learning concepts and the phone interview tests how deep your knowledge is about different machine learning algorithms. After theses, I was brought onsite for three more technical interviews ranging from coding to testing more machine learning concepts. After I passed the technical assessment, I was brought onsite again to interview with members from the management team. I was not tested on my technical abilities but this part of the interview enabled me to learn more about the company and where the management team is leading this company towards. As I progressed through the interviews, I actively gleaned more information of the company and it enabled me to make a better decision when deciding which company to join afterwards. The last round was with the CEO. My HR contact was very helpful when arranging my interview to suit my schedule. Whenever I had questions, I could ask the data science team and they were always very helpful.