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rahul nehul

@rahulnehul

Senior Software Engineer at Medallia who built concurrency-safe Global Profile Segments persistence and migrated tagging to Roaring64Bitmap.

India

Message

At Medallia, I build Java and Spring Boot backend services and contribute to the shared microservices framework used across the platform. I built the Global Profile Segments persistence and RBAC layer, including concurrency controls and transactional quota enforcement.

I led the segment-tagging migration from Java BitSet to Roaring64Bitmap, preserving compatibility with legacy records while adding support for the new serialization format.

At Western Union, I contributed to the Cassandra-to-PostgreSQL migration and Kafka-based customer Alert Service. I also remediated security findings across 40+ services and migrated applications to Java 17.

Earlier, I developed Java backend services for Veritas NetBackup at Xoriant Solutions Pvt. Ltd. and supported production systems and third-party API integrations at AutomationEdge Technologies Pvt. Ltd.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Medallia

Feb 2025 - Present (1 year 8 months)

Build and maintain Java/Spring Boot backend services for customer, contact, profile, and segmentation functionality. Contribute to shared common framework library and lead segment-tagging migration to Roaring64Bitmap.

Java Spring Boot Microservices RBAC Roaring Bitmaps PostgreSQL GraphQL Feature Flags Junit Integration Testing

Senior Associate

Western Union

Nov 2022 - Jan 2025 (2 years 2 months)

Developed and maintained Java/Spring Boot microservices, REST APIs, and third-party integrations. Contributed to Cassandra-to-PostgreSQL migration, Kafka-based alert service, and security remediation across 40+ services.

Java Spring Boot Microservices REST APIs Kafka Kafka Connect API CDC PostgreSQL Cassandra Apache Spark Python Docker jFrog Security Remediation Java 17 Braze Distributed Locking

Software Engineer

Xoriant Solutions Pvt. Ltd.

Aug 2021 - Nov 2022 (1 year 3 months)

Designed, developed, and maintained scalable Java backend services for NetBackup backup and recovery workflows. Investigated application defects and automated build and deployment with shell scripts.

Java REST APIs Shell Scripting Linux Maven Git Agile

Software Engineer

AutomationEdge Technologies Pvt. Ltd.

Aug 2018 - Aug 2021 (3 years)

Performed root-cause analysis and fixed high-severity production defects. Integrated third-party APIs for CAPTCHA generation and validation, and developed report-generation scripts.

Java REST APIs Third Party API Integration SQL Scripting Production Support