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Daniil Chugunnikov

@daniilchugunnikov

Senior Backend Engineer at SVOI who scaled Node.js microservices to handle 4M+ daily API requests and cut p99 response times by 38%.

Georgia

Message

At SVOI, I architect Node.js and NestJS microservices handling 4M+ daily API requests. Asynchronous event pipelines and Redis caching cut p99 response times by 38%.

I’ve also refactored PostgreSQL schemas at SVOI, increasing query throughput by 45%, and configured CI/CD automation with Docker and zero-downtime rolling deployments. Previously, I built backend services and microservices with RabbitMQ, Express, WebSockets, and MySQL.

Experience

Work history, roles, and key accomplishments

Current

Senior Backend Engineer

Current

SVOI

Oct 2023 - Present (3 years)

Architected scalable Node.js/NestJS microservices handling 4M+ daily API requests, cutting p99 response times by 38% via asynchronous event pipelines and Redis caching layers. Led database refactoring to decoupled PostgreSQL clusters using Prisma, eliminating N+1 query bottlenecks and increasing query throughput by 45%.

NodeJS NestJS Microservices Redis PostgreSQL Prisma CI CD Docker Jest Event Driven Architecture

Backend Software Engineer

Vicekeeper

Sep 2022 - Sep 2023 (1 year)

Engineered asynchronous queue processing microservices using Node.js and RabbitMQ, guaranteeing idempotent message execution across high-volume webhook integrations. Implemented high-security RESTful APIs with JWT/OAuth2 authentication and Redis-based rate limiting, maintaining 99.95% uptime.

NodeJS RabbitMQ REST APIs JWT OAuth Redis Microservices Security

Backend Software Developer

TechSkladLogistik

Sep 2021 - Aug 2022 (11 months)

Developed core inventory synchronization microservices with Node.js and Express, streaming real-time status updates across 50,000+ SKU records via WebSockets. Restructured legacy SQL queries and engineered composite indexes in PostgreSQL, reducing average report generation latency from 12 seconds to under 1.8 seconds.

NodeJS Express WebSockets PostgreSQL SQL Query Optimization Indexing

Junior Backend Developer

KomStrin

Sep 2020 - Aug 2021 (11 months)

Implemented CRUD backend services and data ingestion endpoints using Node.js, Express, and MySQL, delivering core enterprise workflow tools ahead of deadlines. Constructed automated integration test suites and payload validation middleware using Jest and Joi, decreasing regression bug rates in staging by 25%.

NodeJS Express MySQL Jest Joi Integration Testing API Development