PANDI THURAI

Backend Engineer

Coimbatore 1+ yrs exp 82 · Excellent

About

Backend Engineer specializing in Java and Spring Boot with experience in developing scalable, secure microservices and distributed applications. Strong expertise in RESTful API development, Spring Security, JWT authentication, Redis caching, multi-tenant architecture, VAPT remediation, secure coding practices, SQL/NoSQL Injection prevention, payment gateway integration, and relational/non-relational databases. Passionate about designing production-grade backend systems using Kafka, Docker, API Gateway, and modern cloud-native practices while delivering secure, maintainable, high-performance, and security-focused software solutions.

Skills & Expertise (52)

Spring Boot Advanced

8.5/10

Years Exp

Java Advanced

8.5/10

Years Exp

SQL Advanced

8.0/10

Years Exp

Git Advanced

8.0/10

Years Exp

Postgresql Advanced

8.0/10

Years Exp

Microservices Advanced

8.0/10

Years Exp

Redis Intermediate

7.5/10

Years Exp

Docker Intermediate

7.5/10

Years Exp

Event-Driven Architecture Intermediate

7.5/10

Years Exp

JavaScript Intermediate

7.5/10

Years Exp

Jenkins Intermediate

7.0/10

Years Exp

System Design OpenAI API integration SDLC JWT Authentication RBAC WebClient Idempotency Rate Limiting Resilience4j Circuit Breaker Transaction Management Criteria API CSS Database Indexing Tailwind CSS Secure Coding VAPT Remediation HTML SQL Injection Prevention React.js Maven Spring Security Spring Data JPA Hibernate REST APIs Distributed Systems Multi-tenant Architecture MySql MongoDb Apache Kafka GitHub Data Structures & Algorithms Docker Compose GitHub Actions JMeter Postman Swagger Openapi OOP Collections Framework Exception Handling

Work Experience

Java Backend Developer

Coherent Pixels Systems

Sep 2025 - Present

Developed scalable Spring Boot microservices for authentication, order, and subscription management by designing secure RESTful APIs and implementing business-critical backend services. Built and maintained a multi-tenant backend architecture using PostgreSQL, MySQL, and MongoDB, implementing JWT authentication, RBAC, feature-based authorization, and a custom annotation-driven AES-GCM field encryption framework to protect sensitive data. Resolved VAPT findings by implementing secure coding practices, mitigating SQL Injection (MySQL) and NoSQL Injection (MongoDB) vulnerabilities through parameterized queries, Spring Data Criteria APIs, input validation, and secure BSON query construction. Improved application performance by implementing Redis distributed caching, optimizing JPA queries, database indexing, and transaction management, reducing API response times by 30–40%. Integrated the PayPal payment gateway with secure payment workflows, retry mechanisms, centralized exception handling, and resilient error handling to improve transaction reliability. Performed API, bulk, and load testing using JMeter, prepared API documentation with Swagger/OpenAPI, and collaborated in Agile development through Git-based code reviews, debugging, and production support.