Ajay Kumar
SDE II at HashedIn by Deloitte | ex-Cognizant | Java | Spring boot | React
- Role
- Software Engineer Ii at Hashedin By Deloitte
- Location
- Gurugram, HR, IN
- LinkedIn followers
- 500 followers
About Ajay Kumar
Java backend engineer with 4 years of experience, shipping production systems for Fortune…
Experience
Software Engineer Ii
Apr 2025 — Present · Gurugram, IN
Java Backend · Spring Boot · REST APIs · PostgreSQL — [Cardinal Health]Owning backend engineering for Cardinal Health (Fortune 500 healthcare distribution) — one of HashedIn by Deloitte\'s flagship enterprise accounts.‣ Architected and shipped 15+ production REST APIs in Java 17 & Spring Boot, enabling healthcare clients to manage multi-package shipments with configurable delivery workflows across distributed services.‣ Eliminated 200+ critical and high-severity vulnerabilities using Veracode and SonarQube, raising quality gate scores across 4 microservices and achieving clean security baselines in all environments.‣ Optimized 5 high-traffic PostgreSQL endpoints via query profiling and index tuning — cutting average latency by 500ms and improving throughput by 40%.‣ Led API contract definition with frontend teams across Figma-based specs and conducted peer reviews for 12+ engineers, reducing integration defects by 40% and post-deploy bugs by 30% over 10 sprints.Stack: Java 17 · Spring Boot · PostgreSQL · Microservices · REST APIs · SonarQube · Veracode · GCP · Splunk · Gradle · GitHub Copilot · Jira
Education
Lakshmi Narain College of Technology, Kalchuri Nagar, Raisen Road, Post Klua, Bhopal-462021
Bachelor of Technology - BTech
2018 — 2022
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