I applied through other source. I interviewed at cofenster (Hamburg) in Jan 2026
Interview
Process took 2 months. Had an initial interview with Head of Engineering then a live coding challenge. Challenge was frontend and backend, AI was not allowed, it was initially set for 1 hour and a half, but in the middle of the session they expressed that all the interviewers were taking over 2.5 hours. That means that they were not realistic with the challenge and even with evidence they didn't improve on that. They also ghost interviewers when post-challenge feedback is asked.
Interview questions [1]
Question 1
Implement a routing mechanism in React and a batch loader mechanism in NodeJS + GraphQL.
I applied online. The process took 2 weeks. I interviewed at cofenster (Hamburg) in Sep 2021
Interview
I got to know all relevant colleagues. The process was kept short and I received feedback quickly. In general I felt like the company gave a good impression and confirmed what culture they presented on the website.
Interview questions [1]
Question 1
General questions and more a getting to know than being confronted with standard questions.
I applied online. The process took 3 weeks. I interviewed at cofenster in Mar 2023
Interview
Very structured process with incl. 6 calls. Really great attention to detail, they really drilled deep into my past experience as they seemed to really care about who they hire.
Interview questions [1]
Question 1
Can you describe a successful CS project in your last role? This was followed by 20 deep dive questions.
