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Yuriy User

@yuriyuser

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.NET Developer at Helsi who improved high-load processing throughput by ~30% with async services.

Ukraine

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At Helsi, I developed .NET backend services and distributed workflows, including a microservice integrating Azure AI for file transcription. I also implemented Kafka-based event processing and improved high-load processing throughput by ~30%.

Previously, at dZenCode, I built a .NET browser automation platform and developed a Chrome Extension with backend integration. In freelance projects, I created business automation tools, REST APIs, and document-processing workflows using .NET.

Experience

Work history, roles, and key accomplishments

.NET Developer

Helsi

Jan 2024 - May 2026 (2 years 4 months)

Designed and developed backend services and distributed workflows using .NET, focusing on scalability, reliability, and maintainability. Built and optimized a microservice integrating Azure AI for file transcription, and implemented event-driven architecture with Kafka.

.NET Azure Kubernetes Docker Kafka MongoDB PostgreSQL CI CD Jenkins Microservices Event Driven Architecture Async Processing

.NET Developer

dZenCode

Jan 2022 - Jan 2024 (2 years)

Designed and built a browser automation platform on .NET for managing workflows across multiple marketplaces. Developed a Chrome Extension with tight backend integration and implemented browser automation using Puppeteer.

.NET JavaScript Puppeteer SignalR gRPC Rust WPF Angular Clean Architecture Entity Framework Multithreading Async Await

.NET Developer

Independent / Freelance

Jan 2020 - Jan 2022 (2 years)

Worked on several small freelance and internal business automation projects using .NET, ASP.NET Core, Blazor, EF Core, PostgreSQL, SQL Server, and Docker. Built a Blazor-based admin panel and developed REST APIs for file upload and data processing.