Oleksii S.

I am an AI developer and senior .NET engineer. I help companies build practical AI-powered products, RAG systems, chatbots, AI assistants, document search, and AI workflows that work with real business data.

A strong background in .NET, backend systems, SaaS platforms, Blazor, Azure, databases, and production-ready architecture helps me build AI features as stable parts of real software products.

My focus is on making the solution useful, reliable, and easy to maintain. I have worked with systems in finance, grocery, and other business domains, with attention to clean architecture, good performance, stable backend, and code that other developers can support and extend later.

🤖 AI Engineering

• AI-powered applications and business automation
• RAG systems / Retrieval-Augmented Generation
• AI assistants and knowledge-base chatbots
• AI agents and multi-step AI workflows
• LLM integration and orchestration
• OpenAI API, Semantic Kernel
• Vector databases, including Qdrant
• Document processing and semantic search
• Prompt engineering and context management
• Integration of AI features into existing .NET applications

🌐 Backend & Architecture

• .NET Core / .NET Framework
• High-load systems and distributed architecture
• Microsoft Orleans
• REST APIs and scalable SaaS platforms
• Event-driven and service-oriented architecture
• Performance optimization
• Legacy system modernization

🎨 Frontend

• Blazor
• Angular
• SPA development
• HTML, CSS, TypeScript

🚀 Cloud & Data

• Azure Cloud
• Azure App Services
• Azure Storage
• SQL Server, PostgreSQL, Cosmos DB
• Entity Framework, Dapper
• Database design for business and AI-powered applications

📱 Mobile

• .NET MAUI
• Mobile application development