- Refined the performance and accuracy of the web scrping service by refactoring the code structure and updating legacy packages, leveraging Docker for containerization.- Built an automated "wishlist" creation service on Amazon using Selenium, increasing user engagement and streamlining interactions with the platform.- Led a team to develop a service for aggregating products from non-Amazon marketplaces, resulting in a 45% increase in order volume and a 17% boost in company revenue.- Facilitated knowledge-sharing sessions for the technical team, promoting collaboration and innovation, and leveraging tools like Confluence for documentation and sharing insights.

- Constructed a cryptocurrency payment service, enabling seamless transactions for users with support for Bitcoin and Tether.- Launched a Lightning Network for Bitcoin payments, significantly reducing transaction fees and boosting user payment volume to the site by 30%.- Established a Git-Flow workflow for project management, increasing team development speed by 15% and promoting collaboration.

- Improved API performance through monitoring and load testing, achieving a 35% reduction in load times for critical endpoints.- Achieved a 25% increase in development speed and adoption, alongside enhanced teamwork, by migrating from a monolithic architecture to microservices.- Implemented a Central Authentication System (LDAP) for staf management in internal services and boosted security.- Leveraged PostgreSQL for robust data storage and utilized Apache Kafka for efficient data streaming, ensuring seamless integration and high performance across services.

- Engineered 13 web scraping services to extract and aggregate cryptocurrency data from various global sources.- Dockerized all services and deployed them on Linux cloud infrastructure, enhancing scalability and deployment speed by 40%.- Performed performance tuning and monitoring across all services, utilizing Docker and Linux tools to identify and resolve bottlenecks, ensuring high availability and reliability.

Short-term Contract- Optimized database queries and redesigned MySQL database architecture, reducing query response times and successfully handling up to 1,000 daily visitors

- Increased API performance by 35% through code refactoring and database query optimization.- Reduced server response time by 40% by implementing caching strategies and optimizing MySQL database.- Collaborated with front-end and DevOps teams, resulting in 30% faster feature delivery.