I developed microservices for a large-scale, high-traffic online platform. Led the design, implementation, and maintenance of the payment system (mission-critical component responsible for handling deposits, withdrawals, and refunds). Managed over 200 simultaneous integrations with various payment providers and gateways, ensuring secure and seamless financial transactions. Designed a robust multi-currency system and dynamic commission structures to optimize revenue and efficiency. Engineered an advanced game ranking system, tailoring recommendations by country, category, and provider. Led the integration team (4 developers) while collaborating within a 20-member tech team (16 developers, 4 DevOps engineers) across four specialized teams. Oversaw the orchestration and operation of 20 distinct microservices, ensuring high availability, scalability, and system resilience.

I played a significant role in the development and execution of a strong CRM system that was customized to satisfy the unique requirements of a company. I successfully delivered a high-performance system within the project timeline, exceeding stakeholder expectations. Led the architectural design and development of a comprehensive system within a dedicated team. In order to guarantee effective data management and integrity, was built and implemented intricate database schemas and models using PostgreSQL. To provide critical insights for debugging and performance monitoring, was implemented an effective logging and configuration management system using MongoDB. Using NestJS as the primary framework, I developed the CRM application, leveraging its capabilities to create a scalable and maintainablecodebase. Modular architecture to facilitate ease of development, testing, and deployment.

Developing backend applications for global e-commerce platform Sephora, improving performance, scalability and personalization for millions of customers worldwide. Developed and optimized high-performance Node.js microservices supporting over 100 million monthly API calls. Expanded app's international presence, increasing user base by 30% by launching in 5 new countries. Developed a new feature, self-service checkout API for many countries with separate requirements. Collaborated with clients to gather requirements and translate them into actionable software solutions. Worked closely with cross-functional teams to deliver timely and accurate software updates. Worked in international teams with full communication in English

Worked as part of a distributed team with Epic Games to develop a scalable digital ecosystem supporting over 350 million players. The project focused on delivering low-latency performance. Built and maintained backend microservices using Python (FastAPI), PostgreSQL, and Redis, supporting 1M+ daily active users Wrote comprehensive test suites (unit, integration) using Pytest and supported GitLab CI/CD workflows. Integrated multiple third-party APIs (real-time odds, KYC, payment gateways). Collaborated daily with cross-functional teams in Agile two weeks sprints.