Abhijeet Singh

Consultant

Deloitte

05.2022 - Current

Working as a Java Full Stack Developer for Verizon client and worked for Fresenius medical care client.
Developed a passwordless authentication microservice in Spring Boot using YubiKey serial verification, integrating with a Python script and frontend to enhance security and user experience.
Integrated Google Cloud APIs securely using Workforce Identity Federation (WIF) by configuring AWS–GCP trust setup, enabling service account impersonation without exposing credentials, and accessing Google Calendar API through external identity tokens in both Java (Spring Boot) and Python environments.
Led the end-to-end migration of REST-based inter-service communication to Apache Kafka, improving real-time processing, throughput, and eliminating data loss across distributed microservices.
Owned production-critical bug fixes, collaborating with QA and SRE teams to perform root cause analysis, optimize logs, and deploy hotfixes under tight SLAs with zero downtime.
Developed monitoring and diagnostic endpoints in a Spring Boot application deployed on Unix servers to expose system metrics (e.g. disk usage, memory availability), enabling automated alerts for production space issues and reducing manual troubleshooting time during critical outages.
Maintained and supported two major Angular-based web applications and over 10+ Spring Boot microservices, ensuring 99.9% uptime and timely feature releases in a healthcare-grade environment.
Onboarded and mentored new developers, delivering knowledge transfer sessions on system architecture, Angular module hierarchy, RESTful API structure, and Kafka event flow, accelerating ramp-up time.
Full-time

Similar Profiles