Scalable System Design: Architected scalable multi-user applications, implementing robust RESTful APIs with Node.js and Express, integrated API Read more Gateway and webhooks for event-driven workflows. Asynchronous Processing: Designed distributed task handling systems using Redis and BullMQ, improving throughput and reducing latency for queue-based job processing. Implemented aggregation pipelines to fetch and combine data from multiple sources, optimizing performance for complex queries. Real-Time Communication & Verification: Integrated Socket.io for real-time features like live updates, and Twilio for secure OTP-based user verification. Mailing and Payments: Developed bulk email delivery solutions using Mailgun and integrated payment gateways to support transactional operations. AI Integration & Productisation: Translated AI models into usable SaaS software, focusing on system integration, data flow, and user-centric interfaces for seamless deployment and access. Team Lead: Led the development of AI-based marketing tools using the MERN stack. Managed interns through task delegation, code reviews, and agile planning to ensure timely and high-quality delivery.