Serhii I.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.

* 10+ years of professional experience in software development. * 2+ years of managing a team as team leader * Experience with Software integration and debugging. * Strong adherence to clean code standards and best development practices (SOLID, Clean Code etc.). * In-depth understanding of .NET development platform. * Proficiently applies such practices as continuous delivery, infrastructure maintenance, containerization and virtualization. * Experience with architecture patterns, such as DDD, Reactive Programming, Event Sourcing, Services Oriented Architecture, Microservices. * Proficient in documenting the software modules according to industry standards (e.g. UML, C4 model). * Experience with applying information security practices across all delivery phases.