Rakesh's Portfolio

Experiences

Jan 2024 - Jun 2025

RS Software

Engineered core payment flows — Authorization, Sale, Refund, and Void — integrating with major card networks (VISA, Mastercard) and processors (TSYS, WorldPay), supporting production workloads in the thousands of TPS range.
Redesigned the batch settlement pipeline by introducing a clearance table and a recursive settlement handler, improving throughput by 40% and enabling batches to reliably handle 1,500+ transactions.
Developed a Kafka-driven Notification Service that processes over 1M+ monthly events across emails, SMS, reports, and downstream operations.
Built a Redis-backed virtual terminal and hosted payment page with TTL-based session handling, reducing stale payment sessions by 30% and improving transaction reliability.
Collaborated with DevOps to containerize services using Docker and integrate CI/CD workflows with Jenkins, reducing deployment time from hours to minutes.
Mentored junior developers, reviewed PRs, and introduced static analysis practices to improve code quality and consistency across services.

Sep 2021 - Jul 2023

Cognizant

Modernised critical insurance modules (booking, binding, claims) by migrating them from monolithic Java EE applications to Spring Boot microservices, reducing average API latency by 25%.
Designed and implemented RESTful APIs enabling policy creation, updates, and renewals, increasing claim processing accuracy and reducing operational turnaround by 15%.
Collaborated with onsite architects and a 6+ member offshore team under an agile model, consistently achieving a 95%+ sprint delivery rate across multiple releases.

Mar 2021 - Aug 2021

Cognizant

Developed and enhanced features for Cognizant’s Internal Framework Hub (MainSpring), improving workflow efficiency for internal business processes and client-facing applications.
Worked cross-functionally to document APIs and streamline framework usability for internal engineering teams.