The quant developer interview loop, round by round
7 min read A round-by-round map of the quant developer interview loop and the classes of questions each firm tests, from the C++ screen to the matching-engine round. Read article
Quant Finance
System Design
The limit order book question every trading interview reaches
8 min read How trading firms grade the in-memory order book design problem, from the data structures that keep cancels O(1) to the follow-ups on price-time priority and self-trade prevention. Read article
System Design
Inside the FPGA interview at a low-latency trading firm
7 min read What a low-latency trading desk actually probes when it interviews FPGA and hardware engineers. Read article
System Design
Why HFT desks won’t let the kernel touch a market-data packet
7 min read How high-frequency trading firms map the network card straight into user space, which tools do it, and what interviewers grade when they ask about the packet path. Read article
System Design
Designing a matching engine that keeps price-time priority
7 min read How exchanges match buy and sell orders, why the hot path runs on a single thread, and how the book rebuilds itself after a crash. Read article
Quant Finance
How Tower Research Capital Interviews Its Low-Latency Engineers
6 min read A breakdown of Tower Research Capital’s engineering loop, the C++ and systems questions it leans on, and what the multi-desk Super Day means for candidates. Read article
System Design
Where the microseconds go in a trading-platform design round
8 min read How the matching engine, sequencer, and market-data fanout of a trading platform fit together, and where its latency really comes from. Read article
Quant Finance
Designing an in-memory order book in a quant interview
5 min read The order-book question is simple to state and brutal in the follow-ups. Here’s what trading firms actually look for. Read article
