South Africa. Open to remote anywhere. https://www.rundata.co.za
While I specialise in Linux programs, applications and systems, I have in the past used a little of everything: C# + .Net, Golang, C/C++, very little Android dev (Kotlin), some Java dev (Android).
I am very proficient in Bash, have turned out a few webapps using Vanilla JS + HTML + CSS on the frontend, Golang/C#/Java on the backend.
I believe in delivering bespoke software, and usually use a stack composed of JS, HTML, CSS, Golang, Linux, PostgreSQL with Nginx as a load-balancer (rarely needed, to be honest).
I've also written network applications for some clients, a few GUI applications, and at least one Windows Service.