He made and sold Fiori application for a large VOX company. He made and containerized python framework for Jenkins integration testing. He optimized large client, React application in a minimalist way. He is the autorof szachetka.com and goodcompass application. He was ateacher of physics for 4 years. He was a leader of the NERW WUT 2018 University project, and he defended my thesis based on my idea.