Дониёр Курбанов

I’m a Java Backend Developer with ~4 years of experience building and maintaining high-load systems, microservices architecture, and integrations with internal and external services. I focus on performance optimization, scalable design, and clean architecture principles like SOLID, KISS, and DRY.

My core stack includes Java 21, Spring Boot, Kafka, Redis, and PostgreSQL (also MS SQL Server). I’ve designed distributed solutions that prioritize fault tolerance and production readiness, collaborating across frontend, analytics, and product teams to deliver reliable outcomes.

I’ve contributed measurable improvements, including reducing database load by up to 40% through architecture and query optimization, and improving API performance by up to 60% using Redis caching. I’ve also designed and implemented 100+ REST APIs, and built robust integration strategies with retry, timeout, and error-handling mechanisms.

In recent roles, I designed modular architecture with clear domain separation and built ERP (1C) integration from scratch with guaranteed delivery mechanisms. I’ve implemented universal file upload/processing, developed Kafka-based event communication, enhanced monitoring and centralized logging, and strengthened security using JWT and Keycloak, including achieving 80%+ test coverage.