Leo J.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.

I am a senior software engineer with more than 10 years of experience focused mostly around web development, web applications and software architecture. I am highly versatile, adapting quickly to new projects and new technologies. I enjoy organising teamwork, mentoring co-workers and being involved with the product development and team-recruitment. A master degree in Computer Engineering gave me solid theoretical foundations, as well as a love for clean code, effective architecture and the curiosity of always learning. In particular, I have a passion for Functional Programming. For frontend work, I am especially profficient in elm as I have been using it professionally and on side projects for about 3 years. For the backend I have a particular liking for Haskell and Clojure.