I was part of a dynamic team responsible for the development and integration of a robust system encompassing Oracle databases, Node.js backend, and a React frontend. My contributions were focused on enhancing various aspects of the system, emphasizing collaboration and continuous improvement.- Contributed to the development and implementation of features across the database, backend, and frontend, ensuring cohesive functionality and user experience- Improved system performance by analyzing database relationships and optimizing SQL queries, alongside suggesting and assisting in the implementation of indexing and query optimization techniques, which significantly improved data processing efficiency and retrieval speed- Involved in performance analysis efforts to identify and address system bottlenecks, enhancing overall system efficiency- Participated in the review and simplification of complex system functionalities, making them more efficient and easier to manage

I was part of team tasked with the backend and partial frontend development of a large-scale IT system, focusing on continuous enhancements and updates.- Development and ongoing refinement of system features- Performed multi-layer testing to ensure system reliability.- Collaborated with various teams and external partners for features integration.- Reviewed user requirements, addressed bugs, and resolved system issues.- Mentored and guided less experienced colleagues, supporting their professional growth and knowledge acquisition.- Transitioned from REST to Kafka for improved efficiency.- Worked on reducing team dependencies, promoting more independent operations.- Proposed and implemented improvements for code quality and safety.- Organized team training sessions and documented challenges and solutions.

I was part of team developing a multi-threaded Java application for package tracking.- Overseeing tasks from user story creation to documentation.- Ensured quality assurance standards and maintained optimal code coverage throughout the project.- Actively contributed to the team's migration to Spring Boot.