Konstantin K.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Developer/Game Developer. I have huge experience in application development and game development in projects from casual or gamling games to AAA projects. Development of both client and server applications. game engines, render engines etc... Experience in all aspects of application development such as like, networking, game logic, AI, rendering (WebGL, OpenGL, DirectX), etc. As well as the development of many tools and utilities, level editors packers for graphics or resources and much more.