A technical interview on HackerRank, together with a test on C++ syntax and memory questions, and finally a test on hardware and concurrency knowledge. The HackerRank test involved one OOP question (concert tickets) and one DSA question, roughly medium level for both.
I can't remember; it was too long ago. But knowing C++ goes a long way, including the struct data type. They asked a question to compare which struct takes more memory.
The following metrics were computed from 2 interview experiences for the Optiver Graduate Software Developer role in Amsterdam, Netherlands.
Optiver's interview process for their Graduate Software Developer roles in Amsterdam, Netherlands is extremely selective, failing the vast majority of engineers.
Candidates reported having very good feelings for Optiver's Graduate Software Developer interview process in Amsterdam, Netherlands.