These are the main programming languages I use daily for projects. I use/have used a bunch more, but those are usually scripting languages I am not invested in. For example, Lua and Python.
My first choice for writing performant Games & Engines. I know the strenghts and weaknesses, and like to understand what is happening within the language going forward. For example by going to Conferences.
A great language which I think has a huge potential to become the new go-to systems programming language because of it's thread-safety guarantees and it's crate ecosystem.
My go-to language for when productivity is more important than runtime performance. Which is why I like to use it for most tools and gameplay code.
I have a lot of experience both working with professional game engines and creating custom ones.
The insight I got from the big engines I used to improve the workflow and pipelines of my own engines.
I have experience with cross-platform development. Both on Desktop platforms(PC, Linux) and on Consoles (PlayStation 4), as well as VR. On several projects.