Looking for a job

Ivan Barykin

@ivangodev

hello my name is Ivan I'm a Software engineer with more than 3 years of experience, my stack is Golang PostrgreSQl Redis Kafka

Germany

Message

What I'm looking for

I’m looking for a Go backend role where I can design microservices and REST APIs for high-load products, optimize PostgreSQL and infrastructure, and write clean, maintainable, resilient code at scale—on-site, remote, or hybrid.

Backend Engineer with 3+ years of experience specializing in Go and high-load microservices architecture. Currently at REWE Group, I design and optimize systems to handle millions of users, focusing on performance and scalability. I have a strong track record of reducing API latency (from 800ms to 120ms), building hybrid authentication schemes processing 5k+ RPS, and implementing rule-engines for dynamic A/B testing. I am passionate about writing clean, predictable code and building resilient infrastructure with Docker, PostgreSQL, Redis, and Kafka. I thrive in environments where processes are streamlined and the product is the main focus. Native Russian, Fluent English (C2).

Experience

Work history, roles, and key accomplishments

Golang Developer

REWE Group

Jun 2025 - Jun 2026 (1 year)

Designed and optimised Go-based microservice architectures for high-load workloads, including a hybrid offline authentication flow handling 5,000+ requests per second. Improved personalization with rule-based A/B testing and reduced API response time through PostgreSQL query and index optimization.

Go PostgreSQL Redis Docker REST Git Kafka Microservices A B Testing Authentication Database Optimization Docker Compose

Golang Developer

Arsontrade Tashkent

May 2023 - Apr 2025 (1 year 11 months)

Built REST APIs in Clean Architecture style for an online store, including business-logic separation across Delivery, Service, Repository, and Domain layers. Developed an admin catalogue with advanced filtering and improved performance through database auditing, composite indexing, and optimized queries.