Dmitry Sipunov
Dmitry Sipunov

Senior Backend Developer (php) | Fintech | highload

Actively looking · Member since 13 May 2026
Message
Location
Georgia
Desired salary
Unspecified
Work preference
Full Time
Experience level
Not set

About

Professional summary

I am a Senior PHP developer with over 8 years of experience working with PHP-based technology stacks. Throughout my career, I have specialized in backend development, focusing on building scalable and efficient systems. I have worked extensively in domains such as fintech, gaming, online stores, and shopping mall infrastructure. My expertise includes working comfortably with databases and applying DevOps practices to improve development workflows and system reliability.

I have a strong background in designing and optimizing high-load systems, including microservices architectures and event-driven systems using technologies like Kafka and RabbitMQ. I am experienced in developing REST APIs and internal service integrations, ensuring fault tolerance, data consistency, and traceability in distributed environments. I am also skilled in automating merchant onboarding and payment routing logic to reduce manual operations and accelerate time-to-market.

My technical skills include PHP 7 and 8, Symfony and Laravel frameworks, Redis, Elasticsearch, ELK stack, MySQL, PostgreSQL, GraphQL, MongoDB, Docker, and testing tools such as Codeception and PHPUnit. I follow best practices including SOLID principles, Domain-Driven Design, and Agile methodologies like Scrum. I am comfortable working remotely and collaborating across distributed teams.

In my previous roles, I have contributed to improving code quality, system scalability, and monitoring using tools like Grafana and Prometheus. I have also mentored junior and mid-level developers, helping to improve team performance and codebase maintainability. I am passionate about continuous learning and sharing knowledge with my peers.

I am fluent in English and a native Russian speaker. I hold an Engineer's degree in Industrial Electronics from the Taganrog Technological Institute of Southern Federal University. I am currently based in Tbilisi, Georgia, and open to full-time or project-based remote opportunities that challenge my backend development skills and allow me to contribute to innovative fintech and high-load systems.

Skills

25 capabilities

Experience

Career history

Senior PHP-разработчик | Symfony | Distributed Systems Ecommpay

Developed scalable microservices-based payment processing architecture under high transactional load. Designed and optimized complex SQL queries and payment routing logic. Implemented asynchronous event handlers using Kafka ensuring idempotency and fault tolerance. Automated merchant onboarding and routing configurations. Designed and extended REST APIs for internal services. Contributed to containerized development environment and improved legacy code quality.

Senior PHP Developer | Symfony Coexwalf OÜ

Optimized PostgreSQL queries with indexing and partitioning. Covered code with unit and integration tests using Codeception. Configured Redis for caching and queues. Designed and implemented REST and GraphQL APIs. Followed SOLID principles, OOP, DDD, and architectural patterns.

Senior PHP Developer | Symfony M.Video

Covered microservices with PHPUnit tests reducing errors by 80%. Implemented real-time monitoring with Grafana and Prometheus. Developed data parsing systems for external bank APIs.

Middle PHP Developer Orion Innovation

Designed REST APIs and integrated external payment systems. Mentored mid-level developers through code reviews and onboarding. Integrated RabbitMQ for async processing improving response time and service stability.

Full Stack Developer Bloomex

Maintained legacy code fixing over 50 issues. Migrated legacy project to newer PHP version. Wrote initial unit tests for critical business logic. Introduced Xdebug and trained team members.

Education

Learning history

Taganrog Technological Institute of Southern Federal University

Engineer's degree in Industrial Electronics

Department of Microprocessor Systems

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