radix trading·Software Engineer·Technical Phone Screen
Jun 2026
One coding round for a quant researcher role at Radix Trading, focused on C++. The problem involved implementing a rolling median, and from what I can tell the experience varies depending on which research lead you're interviewing with.
- Implement a rolling median in C++.
“This is a classic two-heap setup but doing it cleanly in C++ under pressure is a different story.”