1. Created an authentication system supporting OTP-based login for customers and cooks, and token-based authentication for admins using JWT and OAuth 2.0.2. Architected a cook onboarding module with Express.js, MySQL, Redis, and BullMQ, eliminating 100% of training workloads via automation.3. Spearheaded the development of the 'Chef for Party' feature, shifting 100% of party reservations to an automated system, replacing manual handling.4. Devised a contract management system using Express.js and MySQL, cutting contract processing time by 40% through automation.5. Led the creation of a cook replacement system that increased team efficiency by 50% by eliminating direct customer involvement.6. Pioneered the Customer Side Leaves System with MySQL, BullMQ, Redis, and Redlock, enabling the app to process 100% of leave requests.7. Integrated Zoho APIs with Axios.js to fully automate the help ticket creation process 50% reduction in manual ticket creation.8. Revamped the codebase to an object-oriented paradigm, enhancing maintainability and scalability by 100% through the implementation of interfaces, inheritance, and class-based architecture.9. Implemented the Abstract Factory design pattern to manage task names and queuing logic in BullMQ, increasing task scheduling efficiency and system flexibility by 20%.

1. Facilitated the integration of Firebase Notifications, which improved user engagement by 30% and communication efficiency.2. Collaborated on cook onboarding with Express.js and MySQL, automating 90% of the process and cutting manual training efforts by 50%.3. Enhanced task scheduling with BullMQ, improving worker thread efficiency by 25% and reducing processing time by 15%.4. Aided the transition from JavaScript to TypeScript, boosting type safety by 35% and reducing code errors by 20%.5. Developed features for the chef scheduling system, using BullMQ tomanage 80% of background tasks and streamlining task categorization, improving operational efficiency by 40%.