# Eugene Zaiko

> Senior Full-Stack Engineer specializing in event-driven architectures, PostgreSQL optimization (109M+ rows), and multi-tenant systems (216+ databases). 5+ years of experience with Node.js/NestJS, React/Next.js, PHP/Symfony.

## About

- Based in Minsk, Belarus. Open to remote full-time and freelance engagements.
- Primary stack: TypeScript, Node.js (NestJS), React (Next.js), PostgreSQL, Redis, BullMQ/RabbitMQ, AWS, Docker.
- Proven track record: sub-5s queries on 109M+ records, production LLM media pipeline shipped in 60 days, zero-downtime migrations across 216+ tenant databases.

## Selected Projects

- [RealStream](https://safesync.dev/#work): AI-native media orchestration. Event-driven NestJS/BullMQ platform handling thousands of concurrent inference jobs with WebSocket status tracking.
- [Perseus](https://safesync.dev/#work): Industrial IoT analytics. Hardware-aware PostgreSQL partitioning strategy reducing 1-hour queries to sub-5 seconds across 109M+ records.
- [Experts & Partners](https://safesync.dev/#work): Multi-tenant infrastructure for Tel Aviv University managing 216+ isolated PostgreSQL databases. Full-stack modernization from legacy jQuery to React/Node.js.
- [Storm](https://safesync.dev/#work): B2C automotive resale platform with buy-back guarantee. Legacy CRM reverse-engineering + Docker containerization reducing deployment failures by 70%.

## Experience

- Senior Software Engineer at PixelPlex (2025): Architected event-driven AI media platform from scratch, launching production-ready MVP in 2 months using NestJS and BullMQ.
- Software Engineer at Syberry (2024–2025): Optimized high-load PostgreSQL systems (109M+ records) from 1-hour queries to sub-5 seconds while modernizing legacy enterprise platforms with PHP 8.
- Fullstack Engineer at Linnovate (2021–2024): Managed complex multisite infrastructure across 216+ databases and spearheaded a full-stack modernization from legacy jQuery to React/Node.js.

## Skills

### Backend
- Node.js (NestJS)
- PHP (Symfony)
- BullMQ / RabbitMQ
- REST & GraphQL APIs
- Microservices

### Frontend
- React / Next.js
- TypeScript
- SSR & WebSockets
- Redux Toolkit
- Tailwind CSS

### Data & Caching
- PostgreSQL
- Redis
- Query Optimization

### DevOps & Cloud
- AWS (S3, EC2)
- Docker / Kubernetes
- GitHub Actions
- Nginx

## Contact

- Email: zaiko.eugene@gmail.com
- Phone: +375257810998
- LinkedIn: https://www.linkedin.com/in/eugene-zaiko
- GitHub: https://github.com/rahunak
- Telegram: https://t.me/rahunak
- Portfolio: https://safesync.dev