Aleksey Usatov

As a software developer, my responsibilities included: - Supporting and modernizing current B2B services - Upgrading backend services from ASP.NET MVC, ASP.NET Web API, and WCF to ASP.NET Core 3.1+ with REST API - Upgrading the CI/CD pipeline using the GitLab CI/CD stack - Migrating the manual deployment flow to Windows-based servers to automatic deployment into a Kubernetes cluster - Migrating the frontend to a modern stack - Developing new architecture and refactoring current services

I worked on a warehouse management solution and an automatic rule-based decision making system for commerce. Specifically, I: - Designed a new event-based architecture - Rewrote the backend systems from WCF-based ones to ASP.NET Core - Maintained the legacy WPF-based client for accessing the backend systems - Rewrote internal client application using Web technologies - Set up metrics - Designed the CI/CD pipeline for automatic builds of the whole backend system and both clients

I developed a Telegram bot for small retail shops with a complex admin system. For this project, I designed and implemented a framework for developing Telegram bots using the C# language. The framework allowed for features such as: - Complex menu system for easy navigation in the bot - Personal accounts with settings - An authorization system based on roles and claims similar to the one used in ASP.NET Core - Group management including auto-moderation - Message broadcasting to all active bot users