It's all depending on the domain you work in. When working as a web/app frontend developer I've barely ever needed any real maths knowledge beyond basic algebra

It's all depending on the domain you work in. When working as a web/app frontend developer I've barely ever needed any real maths knowledge beyond basic algebra. As a backend developer, I've had to read up on certain select algorithms. As a game developer I've had to study a bunch of trig, pathfinding and search algorithms. It also depends on the stacks you work with of course. If you are doing doing a lot of Haskell for example you probably want to understand category theory and lambda calculus and whatever.