Dmytro Skryzhevskyi

Developed distributed ticketing platform in C#/.NET: core subsystems with performance optimization, multithreading, business rules (validation, fare calculation), resilient HTTP/TCP communication. Worked with heterogeneous codebases (C, Java), Python tests, Jenkins, GitLab. Built cloud-native routing platform: ASP.NET Core 7, React 18, TypeScript on Azure. Designed REST APIs, implemented CQRS, Clean Architecture, SignalR real-time features, EF Core with SQL Server. Used Docker, Azure DevOps.

Modernized automotive service station software (spare parts, repair workflows, customer handling). Refactored legacy codebase, fixed architectural issues, reduced technical debt, resolved critical production bugs. Stabilized key modules, prepared public releases including QA, build process review, and release coordination.

Developed POS and trading system in C#/ASP.NET: business logic, process automation, data management. Built QuickBooks integration with API synchronization of sales, customers, inventory, accounting data. Created robust ETL services with validation, transformation, scheduled imports/exports, parallel background processing. Integrated external auto-parts supplier APIs: authentication, data matching, price updates, automated ordering workflows for inventory management.