Applied online, Received call from HR had a discussion around CV, why N26, what my previous experience is etc.2. Received problem statement to solve it was great problem statement needs knowledge of Java 8 features, concurrency API and a little bit of algorithm. Had a technical interview with sr developer

• They gave a small problem to solve online - Find first no repeating char in a given string and code o(n) solution, then had a discussion around REST API, OAuth, CICD, TDD etc. Overall process was good, received an email that we are moving forward with your candidacy. No feedback

Find first non-repeating char in a given string O(N) time complexity. ?

OAuth token vs JWT token?

Test pyramid and related question?