Worked with a global team of developers to build a trading system using Java, Spring, PostgreSQL, and MongoDB. I implemented WebSocket for real-time trading and wrote integration tests to cover edge cases, ensuring system reliability. This experience enhanced my ability to collaborate across borders and deliver high-quality, scalable solutions.

As a part-time developer, I developed a backend from scratch using Kotlin and Spring, setting up the CI/CD pipeline for deployment on Azure and code quality checks. I also took on frontend development with React and TypeScript, adding new features and enhancing the overall user experience. This role allowed me to manage both backend and frontend tasks while ensuring seamless deployment and infrastructure management.

Over almost three years, I successfully delivered three major applications: a website, a mobile app, and a back-office system. As a backend engineer, I developed key features like KYC, My Account, Payments, and encrypted confidential user files. I played a crucial role in migrating Java code to Kotlin, using Spring as the framework. The tech stack included RabbitMQ for messaging and PostgreSQL and MongoDB for databases. My contributions ensured secure, efficient, and scalable solutions across all projects.

As a backend engineer intern, I assisted in migrating the internal team’s database from Microsoft Excel to SQL Server. I developed a macro application to streamline data entry for inspection results into the new database. Additionally, I built a Telegram bot with AI capabilities to identify defects in manufactured products from images. The AI, developed using Python, TensorFlow, and OpenCV with a CNN algorithm, provided accurate defect detection through the bot.