working in SeeQR an advanced open-source tool designed to streamline SQL database optimization and performance testing. It serves as a comprehensive platform for managing SQL databases efficiently this is a group team where we are contributed Transitioned an Electron application from Context API to Redux Toolkit to establish a state management system for enhanced scalability and performance optimization. Utilized RTK's store to minimize unnecessary component re-renders and employed memoized selector functions to optimize memory usage.Enhanced codebase navigability and enforced strict TypeScript typings across the existing TypeScript code to boost readability, standardize data contract interfaces, and facilitate faster debugging, thereby accelerating the application's development cycle.Revamped the UI in adherence to React guidelines to augment readability and component reusability. Decomposed multifaceted components into smaller units, leading to a reduction in the application's bundle size and ensuring uniformity across the application.Reorganized the codebase to isolate SQL database management logic, preventing command conflicts between MySQL, PostgreSQL, and SQLite databases. This segregation enhanced the application's reliability and simplified debugging processes.Updated application dependencies and resolved breaking changes to maintain ease of maintenance and mitigate potential security vulnerabilities, including node integration bypasses. Streamlined the application by eliminating unused libraries, thus reducing the overall package size.Conducted an audit of the existing test suite covering current functionalities and prioritized the creation of new tests for newly developed and previously untested components. Given the extensive codebase and the existing ~30% test coverage, expanding coverage on older code was deemed less efficient.