Hello, I'm

Nikhil Kumar
Backend Developer

Building scalable, high-performance, and secure systems using Java and Spring Boot. Expert in microservices and payment platforms.

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Nikhil Kumar
🚀 Backend Expert
☕ Java Developer

About Me

Professional Summary

Backend Developer with 3 years of experience in building scalable systems.

I specialize in designing RESTful services, microservice architectures, and backend optimization using Java and Spring Boot. I consistently deliver reliable, production-ready solutions for banking and payment platforms.

Currently working as a Software Engineer at Financial Software and Systems, integrating robust security mechanisms and optimizing payment gateways.

Education

VIT University (2021 – 2023)

Masters of Computer Application - CGPA: 8.08

Tech Stack

Java
JavaScript
Spring Boot
Spring MVC
Hibernate
Microservices
Kafka
JSP
JDBC
AJAX
JQuery
Bootstrap
CSS
MySQL
SQL
Git
Maven
Jenkins
CI/CD
AWS
Postman
JIRA
Bitbucket
Eclipse
JUnit
REST API Testing
DSA

Experience

Software Engineer

Financial Software and Systems Pvt. Ltd., Chennai

Feb 2023 – Present
  • Designed and integrated a robust rate-limiting mechanism into the payment gateway, mitigating DoS attacks and improving system performance by 20%.
  • Implemented Demographic Data Security by encrypting sensitive PII at rest and built a scalable RBAC-based Merchant User Management Module.
  • Developed the end-to-end Risk Relaxation framework and Velocity Check for India’s largest bank, improving authorization success rates by 20–25%.
  • Built a comprehensive audit-logging framework ensuring full traceability of user actions like merchant onboarding and provisioning.
  • Engineered a high-security encryption/decryption engine boosting transaction data protection by 40% and system reliability by 30%.

Selected Works

Real-time Chat App
Java Swing & Socket IO

Real-time Chat App

Multi-threaded client-server chat application with secure authentication, group messaging, and persistent TCP connections. Won 'Java Hackathon' at VIT.

View Project →
Encryption Engine
Security Framework

Encryption Engine

High-security encryption/decryption engine for payment gateways using industry-grade cryptographic standards, boosting data protection by 40%.

Professional Work
Risk Relaxation Framework
Banking Module

Risk Relaxation Framework

End-to-end framework including UI, DB, and Backend for India's largest bank, reducing false declines by 30%.

Professional Work

Get In Touch

Let's Connect

I am always open to discussing new opportunities, collaborations, or technical challenges.

📧 nikhilraj966@gmail.com
📱 +91 7033119903
📍 Chennai, Tamil Nadu