Andrey R.

Many companies don't need another developer—they need someone who can understand a complex system, identify technical risks, and build the right solution before writing thousands of lines of code.

That's where I help.

I'm a Software Architect and Senior .NET Engineer with 20+ years of commercial experience designing, modernizing, and scaling business-critical applications. I specialize in turning complex legacy systems into maintainable, scalable platforms while minimizing business disruption.

Over the years, I've worked with startups, SMBs, and enterprise clients, helping them solve technical challenges rather than simply implementing features.

What I can help you with

✔ Legacy system modernization

✔ Technical Discovery & Solution Architecture

✔ SaaS platform development

✔ ASP.NET Core / .NET 6-10

✔ Azure Cloud Architecture

✔ System Design & Technical Leadership

✔ Performance optimization

✔ Multi-tenant applications

✔ REST APIs & Microservices

✔ Database design & optimization (SQL Server)

✔ Identity, Authentication & Authorization

✔ AI integration into existing applications

Typical projects

• Modernizing large legacy .NET applications

• Building new SaaS products from scratch

• Designing scalable cloud architectures

• Technical due diligence before development starts

• Recovering undocumented business logic

• Refactoring complex systems

• Leading development teams

• Solving performance bottlenecks

My technology stack

• C#
• .NET / ASP.NET Core
• Azure
• SQL Server
• Entity Framework Core
• Angular
• React
• Docker
• Kubernetes (AKS) • Redis • RabbitMQ • SignalR • OpenIddict • Azure DevOps • GitHub Actions