All Companies

Jane Street interview preparation

Jane Street

www.janestreet.com

Walk into Jane Street prepared.
Know what it looks for.

Quantitative trading firm and global liquidity provider using technology and collaborative problem-solving.

Start a mock interviewListen to free episodes

What we know about Jane Street

Your preparation, in four steps

Take them in order, or start where you need help most.

  1. Step 1Learn how Jane Street hiresHear its values, its interview process and the questions it asks.Listen
  2. Step 2Build your storiesTurn your experience into STAR answers shaped around Jane Street.Open Story Bank
  3. Step 3Tailor your resumeWrite a resume for your target role at Jane Street, from your own experience.Open Resume Studio
  4. Step 4Practice out loudRun a mock interview with an AI interviewer. Get a written report on what to fix.Start practicing

What Jane Street's rounds look like

System design at Jane Street

Length
70 minutes

Known to ask

  • System design related to a file data parser
  • Validate order book data across multiple databases
  • Design exchange-trading system message flow between a trading system and an exchange
  • Process one million quote updates per second with low latency
  • Implement an LRU or LFU cache, then add expiry, thread safety and concurrent reads and writes
  • Event system: priority queue of events, then add replay and ordering guarantees
and 2 more

From Jane Street's hiring pages and candidate reports, read 2026-10-27.