There are several steps in the process, as I understand it. These steps may change for different candidates.

Step 1: It starts with a 1-hour phone screen in which you have a live coding session with a JPMorgan developer. I chose Python as the language I wanted to be interviewed in. I was asked about my experience and strengths, then four general computer science questions (algorithms and trees) and two coding questions (dynamic programming and trees).

Step 2: Five different on-site interviews. Three were pure coding interviews, one with a recruitment leader, and one with the site manager.

Step 3: Three on-site interviews with interviewers from the US & London, using TV and camera.

Step 4: A short 30-minute phone interview with the expected manager.

Step 5: Offer

When I said I am an expert with Python, they asked advanced questions about Python. Questions like performance, data structures and how they work, and some syntax.

Regarding algorithms, there were no specific questions about specific known algorithms, but understanding graphs, trees, and dynamic programming definitely helped.