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Mahak chawla

@mahakchawla

Java backend developer at Western Union who migrated payment services across four European countries to Spring Boot microservices.

India

Message

At Western Union, I migrated payment services across four European countries from a legacy monolith to Spring Boot microservices, including country-specific configurations and payment handling. I also implemented a Skip MFA mechanism for eligible users moving from the legacy platform.

I designed authentication and fraud-prevention workflows using risk-based authentication and Kafka-driven onboarding, and improved ID + Selfie KYC across France, Germany, and Italy. Earlier, as a Software Engineer Intern at NextSquare Technologies Pvt. Ltd., I developed backend services and managed the API lifecycle for a business management platform.

Experience

Work history, roles, and key accomplishments

Current

Junior Associate

Current

Western Union

Jul 2024 - Present (2 years 3 months)

Migrated payment services across four European countries to a Spring Boot microservices architecture and implemented secure authentication workflows, improving login success by 35%. Built real-time fraud prevention mechanisms, reducing account takeover attempts by 80% and mitigating 95% of bot attacks.

Java Spring Boot Spring Security REST APIs Microservices Kafka JWT Junit Mockito Jenkins Splunk Dynatrace Agile CI CD

Software Engineer Intern

NextSquare Technologies Pvt. Ltd.

Jan 2023 - Jun 2023 (5 months)

Developed scalable backend services using Node.js, Express, JWT authentication, and REST APIs for a business management platform. Owned the end-to-end API lifecycle including design, development, documentation, and testing.

NodeJS Express JWT REST APIs Backend Development API Design Documentation Testing