It was a 3 step process. First - an interview with their recruiter. The second step was an onsite 2 hours interview with chief architect and two SW engineers. The questions was: * Questions about software architecture (how would you design a twitter, real-time analytics system) * Frameworks (Spring, EJB) and how they work * Java concurrency and multithreading * Java memory model * Java data structures and differences between e.g HasMap and LinkedHasMap. * Algorithms (sorting, searching, trees) * How database planner works * A practical test with pen and paper (designing a banner system) The third step was remote. 3 algorithmic task. Not very difficult.