As a Senior Backend Developer at Azal.io, I optimized the backend significantly to improve performance and scalability. I moved the database layer from raw SQL queries to stored procedures, improved the architecture by making it modular, introduced middlewares to simplify and speed up API requests, identified redundant network calls on the frontend, handled the CICD pipeline, maintained version control, and guided junior developers. My efforts resulted in increased efficiency and reliability, leading to a better user experience.