Leading team responsible for backend architecture, shared libraries, and several functional areas of the SaaS system including C# microservices, websites, and desktop WPF application.Improved internal common libraries to resolve performance and memory issues. Unified logging, tracing, and observability implementations.Improved CI/CD pipeline and Kubernetes deployments to support colecting memory dumps and performance traces, which reduced issue analysis time.Identified and resolved performance issues. That reduced infrastructure costs by 40%.Led a team of 8 engineers to design and implement a new integration with 3rd party solution to offer new services and increase company revenue.

Led a team of 5 engineers to improve and modernize medical research web applications written in C# and AngularSuccessfuly developed and delivered on time new major subsystems into primary application meeting business goalsUnified and modernized shared libraries used across 6 projects. That reduced webpage memory usage by up to 40%, page load time, and increased the real-task performance of the most commonly used pages.Improved solution quality: covered more subsystems with integration and unit tests, reduced amount of technical debt.

Led developers team to write tablet applications for Windows (8.1 Metro, 10 UWP) as wel as Xamarin-based iOS / AndroidModernized C#/ASP.Net API server to use OAuth2, created an official C# API client libraryApplied performance optimizations to cloud-based processing platform: algorithmic updates for calculation-intensive tasks, database-related optimizations, caching, web pages rendering, and loading time optimizationsParticipated in the architecture design of several major back-end subsystems

Reimplemented legacy advertisement scheduler WinForms application in Silverlight Modernized C#/ASP.Net website, done major infrastructure updates to support further growth of customer baseDesigned and implemented new audio/video streaming solution that delivered content to specialized hardware player

iMacros script developer

Migrated data processing application from Delphi to C# using WinForms, made it cross-platform using MonoParticipated in Windows WPF application developmentIntroduced unit tests, improving system quality

Software developer, mainly billing system for PBX.