Collaborated closely with the UI/UX team to overhaul the application interface using Angular 2 framework, resulting in a 25% decrease in website load time and a notable increase in user engagement metrics.Integrated new features into the existing application system in coordination with cross-functional teams. These features included importing and adjusting positions, calculating social expenses, holiday pay, and pensions, enhancing the functionality and usability of the application.Developed a user-friendly module to streamline and automate the preparation of tertial, monthly, and annual reports for all managers, consolidating the reporting process into a common tool for improved efficiency.Optimized database queries to enhance application performance, achieving a remarkable 90% reduction in response times, resulting in a smoother user experience.Designed and implemented modules and APIs to facilitate the import of data into the system, staging tables, and developing procedures for data validation, ensuring data integrity and accuracy throughout the process.