Backend Engineer

I am a Backend Engineer specializing in FinTech and B2B sectors, with a strong focus on building scalable and high-performance systems using async Python, FastAPI, SQLAlchemy 2.0, and event-driven architectures. My work emphasizes clean design, data performance, and delivering real business impact. Over the years, I have gained extensive experience designing and developing high-load APIs and complex financial calculation modules, including interest formulas, penalties, schedules, commissions, and daily accruals.

I have a proven track record of implementing event-driven flows using technologies like NATS JetStream, background workers, and task orchestration to improve system responsiveness and scalability. I am skilled in refactoring legacy code to enhance performance, readability, and modularity by applying best practices in code organization.

My experience spans multiple companies where I contributed to building analytics modules that provided deeper insights into traffic and user behavior, which helped increase revenue. I have also developed multi-channel communication modules integrating email, SMS, WhatsApp, and Telegram, including real-time Telegram bots integrated with CRM systems.

I am proficient in optimizing database queries, particularly PostgreSQL, to improve API response times and overall system efficiency. Additionally, I have developed e-commerce platforms, delivery systems, and microservices, integrating secure payment processing and automating business workflows.

My technical skill set includes Python frameworks such as FastAPI and Django, asynchronous programming with Asyncio, and database technologies like PostgreSQL, MySQL, and Redis. I am experienced with microservices, event-driven architecture, Docker, CI/CD pipelines, and cloud platforms including Yandex Cloud and AWS. I also emphasize quality assurance through unit, integration, and load testing using pytest and related tools.

I am fluent in Russian, with intermediate proficiency in English and German, and upper-intermediate in Polish. I am currently based in Vladimir, Russia, and open to relocation opportunities that allow me to further apply and grow my backend engineering expertise.