At Pay, I develop and maintain a high-load payment gateway processing approximately 4 million transactions per month. I've designed microservice architecture for charge24 and fin, optimized key database queries by 40%, and implemented monitoring, reporting, and API integrations across company services.
Previously, I built payment infrastructure at Boogoo.app and AsIsNur, including banking integrations, payment terminals, accounting reporting, and 1C integrations. I also supported and migrated payment gateway systems from Java/Spring to Python at Mobilnik while mentoring junior developers and conducting code reviews.
