Mateusz 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.

Hello I am a developer with 15+ years of experience in software engineering. My primary interest lies in web, mobile, and blockchain. I am also (ISC)^2 Certified Cloud Security Professional. I can help you make your software or infrastructure secure. If you have an idea and are not sure how to build something, I can be of help. If you want to migrate to the cloud and are not sure how I am here to help. Things I can help you with : * Making your code/cloud/infra secure * Helping with design and architecture * Blockchain * Automation.