Journey

Paymentus Core Product: Enhanced and maintained core payment platform features serving 2,500+ billers, tens of millions of consumers, and powering 724M+ payment transactions across North America and other regions.

Green Dot (Cash Payments): Developed and integrated a Scan-to-Pay payment method, enabling cash bill payments, handling 5,000+ daily transactions, and expanding payment coverage by 20% across a 724M+ annual transaction ecosystem.

Owned features end-to-end, collaborating with architects, senior engineers, product owners, and QA from requirements and design to deployment and production support.

Accelerated feature delivery by 80% while maintaining 99.9% system stability through JUnit-based test coverage improvements and structured peer code reviews.

Interested? Want to see more? Leave me a mail on himanxusharma@gmail.com

Received a letter of recommendation from the CTO.

Developed an API-driven Fraud Risk Management (FRM) algorithm using ISO 8583 protocols and JSON-based transaction data, securing UPI payments of 9.8 Lakh+ customers.

Contributed to Core Banking System design, ensuring protocol harmonization across 79+ branches and 114 BC branches.

Conducted analysis of 100K+ user activities to improve adoption of API-enabled modern banking facilities.