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Hemakumar User

@hemakumaruser

Java Full Stack Developer at Scotia Bank building secure microservices and integrating AI-assisted fraud detection APIs.

India

Message

At Scotia Bank, I design and develop secure backend microservices with Java 21, Spring Boot, and Spring Cloud. I also build REST and GraphQL APIs with OAuth 2.0, JWT, and OpenID Connect security.

At Scotia Bank, I integrated AI-assisted fraud detection APIs using ML, NLP, and LLM-based capabilities to support the handling of suspicious activity. I also developed Kafka- and JMS-based workflows for asynchronous processing.

At Mercedes Benz Group, I developed backend systems and user interfaces for connected vehicle platforms, digital services, and manufacturing applications. I worked with Java, Spring Boot, React, and Azure cloud deployments.

At Takeda Pharmaceutical Company, I developed microservices-based applications and responsive interfaces, and supported cloud-native deployments on AWS. Earlier, at United India Insurance Limited, I developed enterprise web applications and RESTful services using Java, Spring, and React.

Experience

Work history, roles, and key accomplishments

Current

Java Full Stack Developer

Current

Scotia Bank

Apr 2026 - Present (6 months)

Designed and developed secure, scalable backend microservices using Java 21, Spring Boot 3.x, and Spring Cloud for high-availability financial applications. Implemented authentication and authorization with Spring Security, OAuth 2.0, JWT, and OpenID Connect, and integrated AI-assisted fraud detection APIs.

Java Full Stack Developer

Mercedes Benz Group

Apr 2025 - Mar 2026 (11 months)

Engineered enterprise-grade backend systems using Java 17, Spring Boot, and Spring Cloud for connected vehicle platforms and digital services. Developed secure RESTful and GraphQL APIs, built responsive UIs with React.js and TypeScript, and deployed cloud-native applications on Azure with Docker and Kubernetes.

Java Full Stack Developer

Takeda Pharmaceutical Company

Oct 2022 - Dec 2024 (2 years 2 months)

Architected and developed scalable microservices-based applications using Java 11, Spring Boot 3.x, and Spring Cloud with API Gateway patterns. Built responsive UIs with React.js and leveraged AWS services, Docker, and Kubernetes for cloud-native deployments.

Java Developer

United India Insurance Limited

Jul 2021 - Sep 2022 (1 year 2 months)

Developed enterprise web applications using Java 8, Spring Boot 2.x, Spring MVC, and Spring Security. Designed RESTful web services, implemented data access with Hibernate and JPA, and built responsive UIs with React JS.