Go Backend Developer focused on distributed systems, databases, and storage.

I have production experience from two backend internships at Yandex Cloud — Managed Databases for MySQL and Postbox. I'm also a 4th-year Software Engineering student at RTU MIREA.

Worked on mysync, a MySQL high-availability manager.

• Fixed a failure scenario where a manager that lost quorum could keep the lock and block failover.
• Added peer availability checks and automatic lock release on quorum loss.
• Reproduced inter-datacenter network partitions on a 5-node cluster across 3 datacenters; the change was shipped to production.

Worked on Postbox, Yandex Cloud's transactional email service.

• Implemented cursor-based pagination for Identity and Configuration Set across the service stack, from HTTP handlers to SQL queries.
• Added optimistic concurrency control with ETags to prevent lost updates during concurrent Configuration Set changes.
• Decoupled Identity and DNS verification through asynchronous events and fixed verification starting before DNS records had propagated.

Team project building an S3-compatible object storage system with relationship-based access control.

My main areas are Auth, Users, Storage, and Metadata:

• object versioning and streaming multipart uploads;
• asynchronous Storage ↔ Metadata workflows through Kafka with blob upload state tracking;
• JWT authentication, Redis-based brute-force protection, and PostgreSQL persistence;
• end-to-end tests, distributed tracing, and metrics.

Go · PostgreSQL · MySQL · Redis · Kafka · gRPC · HTTP · Docker · OpenTelemetry · Prometheus

• in-memory-database — Redis-like key-value storage in Go with WAL-based persistence.
• messenger-overview — microservice messenger built with Go, gRPC, Kafka, PostgreSQL, Redis, and observability tooling.
• soull.nvim — my Neovim configuration.

• Telegram: @grishinid
• Email: withsoull@yandex.ru