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Konstantin Kim

@konstantinkim

Senior C#/.NET backend developer at Aurora LLC who improved Kafka message reliability and built flight-search platform services.

Russian Federation

Message

At Aurora LLC, I worked on a flight search and pricing platform, improving Kafka message processing reliability with idempotency, retries, and tracing. I also designed database schemas and migrations across MongoDB, PostgreSQL, and ClickHouse, and used load testing to find data-access bottlenecks.

At Rambler&Co, I took part in rewriting afisha.ru from Python/Django to C# and GraphQL and wrote the API for purchasing and reserving products from articles. In my independent Go practice, I built a write-ahead log, a Raft implementation, a distributed cache, and a Telegram assistant bot on the pi.dev harness.

Experience

Work history, roles, and key accomplishments

Current

Go Developer

Current

Independent

Jul 2026 - Present (3 months)

Developed distributed systems including a write-ahead log, Raft consensus, and a distributed cache. Built a Telegram assistant bot on the pi.dev harness for AI-agent development.

Go Distributed Systems Raft WAL Gossip Protocols AI Agent Development Telegram Bot API

Senior C#/.NET Developer

Aurora LLC

Sep 2024 - Jun 2026 (1 year 9 months)

Designed database schemas and migrations between MongoDB and PostgreSQL, built Kafka event streams with idempotency and retries, and improved performance through load testing and observability.

.NET ASP.NET Core Entity Framework PostgreSQL MongoDB Clickhouse Redis Kafka RabbitMQ Mass Transit Event Sourcing CQRS Hangfire Refits Polly Elastic APM NBomber Test Containers Docker Linux Prometheus Grafana ELK

C# Developer

Rambler&Co

Oct 2020 - Sep 2023 (2 years 11 months)

Participated in rewriting afisha.ru from Python/Django to C# and GraphQL, built new services on Kubernetes, and introduced Redis caching and observability with Prometheus and Grafana.

C#GraphQL HotChocolate Redis Kubernetes Helm Prometheus Grafana Python Django

C# Developer

M13

Oct 2018 - Oct 2019 (1 year)

Built Telegram bots for media monitoring, growing collected information 6-7 times, and developed a crypto wallet full-stack website and Swift mobile app.

C#Swift Identity Server Telegram Bot API Database Design

Server-side C# Developer

GloboGames

Oct 2017 - May 2018 (7 months)

Rewrote server logic of Gladiators 3D from Java monolith to C# microservices, implemented game mechanics, and applied event sourcing and CQRS to a crypto trading project.

.NET Core MySQL RabbitMQ Event Sourcing CQRS Prometheus Grafana