Summary
Overview
Work History
Education
Skills
Timeline
Projects
Certifications & Achievements
Generic

Dhiraj Kumar

Patna

Summary

Results-driven Java Backend Engineer (2.8 years) specializing in Microservices, Spring Boot, and Kafka. Skilled in System Design, Performance Optimization, and CI/CD Automation. Completed Java Backend Internship (12 weeks) at GeeksforGeeks, developing a secure E-Wallet Application using Spring Boot, Kafka, and OAuth 2.0.

Overview

2025
2025
years of professional experience

Work History

Software Development Engineer

Barclays
Pune, India
07.2022 - 02.2025
  • Enhanced ICAP Trading System performance by 30% via JVM tuning & multithreading.
  • Designed & deployed iRepoSnap (Spring Boot, MQ, SQL) reducing manual work by 40%.
  • Optimized Fixed Income Risk Engine with Redis caching & async APIs for 25% faster performance.
  • Automated release workflows (Python/Shell), saving 15+ hrs/week.
  • Improved system uptime from 83% → 98% with Grafana/Splunk/AutoSys monitoring.
  • Built real-time monitoring dashboards with Splunk, AutoSys, and Grafana reducing incident MTTR by 5%.
  • Provided L2/L3 production support and Collaborated across Agile/Scrum teams for sprint management and JIRA tracking.

Java Backend Intern

GeeksforGeeks
  • Developed a Microservices-based E-Wallet App using Spring Boot, Kafka, Hibernate, and OAuth 2.0, implemented JUnit/Mockito testing and CI/CD pipelines via GitHub Actions.

Education

B.E - CSE

Chandigarh University
Chandigarh, India
08-2020

Skills

  • Languages: Java, Python, SQL, Shell Script
  • Frameworks: Spring Boot, Hibernate, JUnit, Mockito
  • Databases: MySQL, PostgreSQL, Oracle
  • Messaging: Kafka, RabbitMQ, Redis
  • DevOps: Git, Jenkins, Docker, Kubernetes, CI/CD
  • Concepts: DSA, Microservices, REST APIs, System Design, Distributed Systems, Multithreading, OS, DBMS, CN

Timeline

Software Development Engineer

Barclays
07.2022 - 02.2025

Java Backend Intern

GeeksforGeeks

B.E - CSE

Chandigarh University

Projects

E-Wallet Application – Java, Spring Boot, Microservices, Kafka, OAuth: Built a secure wallet backend enabling fund transfers, transaction APIs & balance tracking using Spring Cloud for service discovery and Kafka for async messaging.

Expense Tracker API – Spring Boot, JWT, AWS, MySQL: Developed RESTful microservice with JPA, deployed on AWS EC2 using GitHub Actions CI/CD pipeline.

Certifications & Achievements

  • GeeksforGeeks Java Backend Internship (12 Weeks)
  • Hackerrank Advanced Problem Solving (DSA)
  • GATE 2022 – Qualified, IIT Kharagpur
  • 8 Barclays Awards for reliability & performance optimization
Dhiraj Kumar