Designed, developed, and maintained backend APIs using the Flask framework, ensuring robust functionality and performance.Integrated external APIs to enhance application capabilities and facilitate seamless data exchange.Collaborated with the frontend team to effectively integrate APIs with HTML, CSS, and JavaScript components, ensuring a cohesive user experience.Developed SMTP services using PHP to facilitate reliable and efficient email communication within the application.Implemented fractional tokenization and advanced blockchain functionalities using Solidity, Hardhat, and Ether.js, driving innovation in decentralized asset management.Conducted comprehensive testing, debugging, and troubleshooting to guarantee the reliability and stability of backend systems.Architected and maintained highly scalable backend systems, integrating RESTful and external APIs for seamless communication and enhanced system functionality.Optimized integration processes by implementing and fine-tuning payment gateways (e.g., PhonePe) and webhook integrations.