Ilia Agafonov

Backend Developer with 10+ years of experience.

Looking for remote work opportunities.

Registered as an individual entrepreneur in Georgia.

Can communicate in English and Russian, also learning Spanish.

Top Skills

Core:
- PHP: Symfony, Yii
- Python: FastAPI, Pandas, Telebot
- SQL: PostgreSQL, MariaDB / MySQL, ClickHouse
- NoSQL & Message Queues: RabbitMQ, Redis
- APIs & Protocols: REST, gRPC, WebSockets
- Infrastructure: Docker, GitLab CI, GitHub Actions
Also used:
- Rust: Actix, Tokio
- Go, JavaScript, TypeScript

Professional Experience

Backend Developer, VIVO-CHAT

Mar 2025 – Present

Building a scalable high-load chat support platform based on Symfony, PostgreSQL, Redis, RabbitMQ, WebSockets (RatchetPHP), and gRPC.

Developed a Trello-like ticketing system for operators with REST API and real-time notifications via WebSockets.

Building a payment processing system for Stripe and bank cards, including subscription management and invoicing.

The system handled thousands of simultaneous chat sessions with message queue decoupling.

Lead Backend Developer, LEADGID

Oct 2023 – Jan 2025

Refactored and optimized an online advertisement RTB (Real-Time Bidding) system: 20+ microservices (Yii2, Swoole, FastAPI, Pandas, Node.js), improved queue performance in RabbitMQ, and tuned SQL in MariaDB & ClickHouse.

Led the revival of a dormant legacy system and guided it through a successful production launch.

Migrated all the microservices to new infrastructure using Docker Swarm and GitLab CI/CD.

Full Stack Developer, GetCourse

Jun 2023 – Sep 2023

Developed an online payments system with Yii2 & MariaDB; conducted code reviews and QA.

PHP Developer, Eqvanta

Nov 2022 – Jun 2023

Backend development of a Yii2-based fintech platform:

Designing and optimizing PostgreSQL schemas
Building CRM modules and SOAP & JSON APIs
Integrating external services via RabbitMQ
Configuring Docker-based local and CI environments with Git hooks and Codeception unit and functional tests
Authoring documentation and cross-team code reviews.
Trained junior developers in writing unit and functional tests and implementing CI/CD workflows.

PHP Developer, Amigoweb

Feb 2022 – Nov 2022

Backend development of a Yii2-based fintech application using Symfony modules:

Developed CRM features and console commands
Authored unit and integration tests with Codeception
Designed and managed PostgreSQL databases
Built message-driven integrations with RabbitMQ
Configured Docker Compose environments for local development and CI

PHP Developer, various companies

Jul 2011 - Jan 2022

Backend development of CRMs, mobile app APIs, online shops, social media aggregator; using Yii 1.x / 2.x, Laravel, Zend Framework, Phalcon, MySQL, PostgreSQL, MSSQL, ClickHouse, Redis

Education

Applied Mathematics, Ural State University, Yekaterinburg, 2009-2014