I didn't make it past the OA. The OA was automatically sent. The OA was very hard. It was only two questions but it was super hard. Apply at your own risk.

1. Algorithmic clarity Can you identify the core pattern quickly? Think: prefix sums, sliding windows, graph traversal, greedy with proof, DP state design.2. Mathematical reasoning They love problems where correctness requires a proof or invariant. Example: why a greedy choice works, why a hash remainder trick detects divisibility. 3. Performance instincts You’re expected to reason about: Time complexity under constraints Memory vs speed tradeoffs Edge cases at scale (10⁶–10⁹ inputs) This is finance engineering. Latency is money.