Mathan Velsamy

broker-ADX IPO subscription processing, validation, and error handling across GCC
markets.
• Developed AngularJS UI for the subscription file upload dashboard, supporting file
submission and user interaction.
• Supported CSV file upload and report download workflows for IPO subscription
processing.

and of web

• Designed and developed 20+ RESTful microservices using Spring Boot, serving
1M+ monthly active users with average response time

• Designed financial reporting engine generating PDF, Excel & CSV reports for
regulatory compliance.

• Designed, tested, and deployed Ethereum smart contracts (Solidity) for secure
document verification and transaction processing.
• Implemented blockchain interactions using Web3.js and integrated smart
contracts with MetaMask for secure user authentication.
• Developed a robust persistence layer using Hibernate and JPA annotations to
ensure efficient data mapping and optimized database interactions.