Jane Street's Unique Approach to Retaining Talent Through OCaml

Imagine a company that builds really complicated computer programs to make smart money decisions.

Most companies let their computer experts use many different tools (like different programming languages) to build these programs.

But this company, Jane Street, mostly uses one special, kind of tricky tool called OCaml.

They even made their own version of it called OxCaml!

This is like giving their workers a superpower that's really hard for other companies to find.

Because OCaml is not very common, when people learn to use it well at Jane Street, it's hard for them to use those exact same skills somewhere else.

This helps Jane Street keep its best computer experts, almost like a secret weapon, because other companies looking for workers usually need people who know many common tools, not just this one special tool.