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.

JavaScript/TypeScript, React, Angular, Knockout, HTML, PHP, SQL, ActionSript/Flex, Java, C# A couple of projects I've developed: JS web application for t-shorts and cups custom design. TypeScript, JS, Knockout, SVG. A framework for all-in-one self-contained HTML. A single file which contains all the components for data presentation and data itself. A data, a template and the core are separated. TypeScript, AngularJS.