DataArt .Net Developer Interview Questions
& Process

First, an HR interview. Then, an English interview. After that, a company technical interview where we covered .NET theory and did an easy live coding exercise, but no algorithms. Next, there was a preparation for the customer interview, which was a Q&A session with the developers working on the customer's project. Finally, the customer technical interview involved a hard, customer-specific live coding task without any theory or algorithms, followed by a customer soft skills interview with the feature team.

The whole thing had 5 interviews. First, a chat with HR, just to get to know me and my background. Mine was in Spanish because I'm from Argentina. Then, an interview to check my English level. After that, a technical interview. Since I speak English well, this one was in English with a .NET expert from Ukraine. It was about 1.5 hours long and involved answering a bunch of questions, mostly about .NET but also other frameworks. Some tricky questions were in there. Next was the Project Interview. I had to sign an NDA, then I met with 3 people from Ukraine working for a client in New York. They asked about my past work and told me about the project and role. Then came the Client Interview. This was the tricky part for me. Before meeting the client, they wanted me to create a new CV, 4 pages long, detailing my last projects, following DataArt's format. Anyway, the client agreed to meet, and before that, DataArt made me an offer that was contingent on how it went. Finally, I had the interview with the client's IT team (2 people) in NY and one person from DataArt who introduced me. This interview felt like going back to step 3, with lots of technical questions, digging deep into one project until they wanted to know the 'magic' behind it. I did my best even though I was uncomfortable during the hour. After that, I waited for feedback. No word the next day. The day after, I asked the project guy, and he said he didn't know if HR had contacted me but the client said no. HR also didn't respond to my emails. I had to Skype HR, and they said the same thing, no explanation, and that they'd share my profile with other clients and get back to me. Two months later, I got a much better offer and am moving to the Netherlands. But at that moment, I was really disappointed after all the effort, expecting at least an email. It's a shame, but I wouldn't recommend DataArt.

The interview process involved an English speaking test over the phone, a chat with HR, a deep dive into technical questions which was the main part, and a final discussion with the CEO. The technical portion covered the full Microsoft stack: .Net fundamentals, C#, MVC, WPF, MS SQL, and EntityFramework. They also asked about JavaScript, Angularjs, and principles of software design and architecture.