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Kirill User

@kirilluser1

Message

I build scalable .NET distributed systems, high-load APIs, and production-grade AI integrations.

Zimbabwe

Message

What I'm looking for

I'm looking to build reliable, scalable distributed systems where I can apply DDD, clean architecture, performance optimization, and modern technologies to create measurable business value.

At YOUX Systems, I build digital asset analysis and price-forecasting platforms, designing high-load microservice architectures that scale horizontally and remain fault tolerant. I reduced memory consumption by 30%, eliminated approximately 26 billion boxing allocations per ClickHouse read run, and cut API response times by 35% through SQL optimization.

I've also built production-grade LLM integration for a realtime voice AI product, including prompt-injection protection and resilient failure handling. I lead teams, improve onboarding and code review processes, and use DDD, clean architecture, and practical engineering decisions to deliver reliable business value.

Experience

Work history, roles, and key accomplishments

Senior .NET Backend Developer

YOUX Systems

Jan 2020 - Jan 2026 (6 years)

Designed high-load microservice architecture for a digital asset analysis platform, eliminating ~26 billion boxing allocations and reducing memory consumption by 30%. Led a team of 5 developers, implemented code review and onboarding processes, and built production-grade LLM integration for a realtime voice AI product.

.NET Backend Developer

YOUX Systems

Redesigned an existing project for DDD and clean architecture, optimized complex SQL queries reducing API response time by 35%, and accelerated a search algorithm from 10 seconds to milliseconds. Decomposed a monolith into microservices for independent deployment and scaling.