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Piyush Chhabra

@piyushchhabra

Message

Senior Java Developer at Airtel Payments Bank who cut cashback processing latency by 95%.

India

Message

At Airtel Payments Bank, I developed a unified cashback management microservice and a real-time Apache Kafka processing pipeline that reduced processing latency by 95%.

I implemented Drools-based rule decisioning, introduced Aerospike caching across microservices, and led service migrations from Java 8 to Java 17 and Java 21. I also fixed a retry mechanism for stuck cashback reversals and led root cause analysis with upstream teams.

Previously, at Ecom Express Pvt. Ltd., I built a customer onboarding microservice integrating 5+ MDM REST APIs and developed the Turnaround Time Management System for shipment records. I’m currently building an AI support assistant for payment queries using Spring AI and pgvector.

Experience

Work history, roles, and key accomplishments

Current

Software Development Engineer II

Current

Airtel Payments Bank

May 2025 - Present (1 year 5 months)

Designed and developed a unified cashback management microservice and a real-time event-driven processing pipeline on Apache Kafka, reducing latency by 95%. Led migration to Java 17/21 and Spring Boot 3.x/4.x, and resolved a high-impact production incident reducing similar failures by 90%+.

Java Spring Boot Microservices REST APIs Kafka Aerospike Drools Jenkins Docker S3

Software Development Engineer I

Ecom Express Pvt. Ltd.

Apr 2024 - May 2025 (1 year 1 month)

Built the Customer Onboarding (COB) microservice end-to-end, integrating 5+ Master Data Management (MDM) REST APIs to onboard 1,000+ business customers monthly. Developed 10+ data-mapping screens on the MDM platform, reducing manual effort by 30%.

Java Spring Boot Microservices Kafka Jenkins Docker S3 REST APIs

Associate Software Development Engineer

Ecom Express Pvt. Ltd.

Jan 2023 - Mar 2024 (1 year 2 months)

Designed and developed the Turnaround Time (TAT) Management System handling the end-to-end lifecycle of 60M+ shipment records. Optimized the shipment manifestation API from 90ms to 30ms response time (67% improvement) and tuned SQL operations to cut processing time by 30%.

Java Spring Boot Microservices SQL Performance Optimization REST APIs

Graduate Engineer Trainee

Ecom Express Pvt. Ltd.

Jul 2022 - Jan 2023 (6 months)

Integrated Single Sign-On (SSO) with role-based access control (RBAC), permissions, and audit logging across existing applications with minimal downtime.

SSO RBAC Java Spring Boot Security