Netherlands
I worked on a Go-to-C++ transpiler. The project aims to be a sweet spot in regards to man-hours for rewriting certain workflow. Expecting transpilation of 90% of the code with manual review afterwards.
Administration of a judging system (SIO2) of the Polish Olympiad in Informatics, Potyczki Algorytmiczne (Algorithmic Engagements) and other algorithmic competitions and training/educational camps. I became Lead Administrator in Oct 2016.
I built a compilation cache system from scratch for the Wasmtime, a WebAssembly/WASI runtime for running code outside of the Web. I did also contribute to other low level parts - improved OS exception & signal handling, affected compilation output code, changed VM memory layout. It's open source: github.com/bytecodealliance, written in Rust.
I worked on the performance of Project xCloud - the game streaming service. My project shifted twice because of unexpected reasons, but I managed to adapt, identify performance problems and get significant results anyway. Used mostly C++ and some Python.