Shortly after I applied, I was invited to complete a series of tests:

1. Zap-N test - Nine neuro-assessment games that tested various elementary memory, logical, decision-making, and math skills. There was a tutorial/trial phase before every game; use that phase to plan your strategy and discern whether time is a factor.

2. HackerRank test - This contained a series of SWE questions related to data structures, operating systems, networking (a lot, with a focus on protocols), and coding in general. Following the completion of the test, I was asked to solve two very poorly worded coding questions of LeetCode medium and hard difficulty (hard to say). The medium question was a hashmap question related to trading, while the hard one was an interval question that I believe is solved using PQs and maps/segment trees.

Afterward, I was invited for an HR interview. The interviewer was very nice, and the interview was enjoyable. The questions were mostly about my projects/experience and plans for the future, along with a few questions about Optiver. I was rejected afterward. The whole process was very expeditious.

Tests:

• Neuro-assessment games
• Data Structure, OS, Networking, and SWE questions
• 2 coding questions: hashmaps and intervals

HR Interview:

• Past projects/experiences and future plans
• Optiver (e.g., What is a market maker?)