Nagarajugari Malingappa

Java Developer

In Solutions Global Pvt. Ltd.

01.2023 - Current

Developed and maintained Spring Boot microservices for Banking systems.
Designed REST APIs and integrated them with frontend using Thyme leaf.
Created JPA repositories for CRUD operations and optimized DB queries.
Participated in daily stand-ups, code reviews, and Agile sprints.
Project: Dispute Management System for Transaction Issues – Canara Bank
Description: Developed a comprehensive web application for Canara Bank to facilitate complaint registration related to transaction failures, fraudulent activities, and wrong credit issues. The system allows branch staff to log and manage complaints for multiple transaction modes including UPI, Debit Card, ATM, NEFT, RTGS, IMPS, and Internet Banking. It enables tracking of complaint status and ensures timely resolution through escalation workflows. The application integrates with the bank’s Online Dispute Resolution (ODR) and Customer Relationship Management (CRM) systems using REST APIs, providing real-time complaint updates and streamlining the end-to-end resolution process.
Key Responsibilities and Achievements:
Designed and implemented the backend using Spring Boot, exposing RESTful APIs for complaint management.
Created modules for complaint types such as failed transactions, fraud reports, and wrong credit issues.
Integrated with ODR and CRM systems via secure REST APIs to fetch and update complaint statuses in real-time.
Developed a clean and user-friendly frontend interface using Thymeleaf and Bootstrap for Canara branch staff.
Ensured secure access with Spring Security, enabling role-based views and actions for Branch User, Manager, and Admin roles.
Implemented status-based tracking, SLA alerts, and escalation mechanisms for unresolved cases.
Designed and optimized relational database schema in Oracle to handle complaint lifecycle and audit trails.
Tested REST APIs with Postman and Swagger, and wrote unit and integration tests using Junit.
Reduced application response time by 30% through service optimization.
Migrated a monolithic module to microservices with zero downtime.
Technologies Used: Core Java, Spring Boot, Spring MVC, REST API, Spring Security, Hibernate, Thymeleaf, Bootstrap, Oracle Database, Postman, Git, Maven.
Reviewed code and debugged errors to improve performance.
Ensured seamless integration of Java-based applications with databases, APIs, and other systems.