WANTED – BACKEND DEVELOPER Madurai – Office Work Only
Position: Backend Developer
Experience: 3+ Years
Location: Madurai
Work Mode: Work from Office only
Working Hours: 10:30 AM – 8:30 PM
Salary: ₹ 25000/ - ₹30,000/month (based on skills & experience)
About the Role
We are looking for a solid and experienced Backend Developer to develop, maintain and secure the backend infrastructure of our mobile application.
The candidate will be responsible for building secure, scalable and reliable APIs, database systems, payment integrations and backend services supporting digital transactions and other application features.
MySQL / PostgreSQL
Advanced SQL queries
Joins, indexes and relationships
Database design and normalization
Query optimization
Transactions and concurrency handling
Data integrity and backup/recovery concepts
API Development
REST API development
JSON request/response handling
API authentication and authorization
API versioning
Third-party API integration
Payment Gateway API integration
Webhook implementation and verification
API error handling and logging
Security – MUST HAVE
The candidate must have practical knowledge of:
JWT / OAuth 2.0
Role-Based Access Control (RBAC)
Secure authentication & authorization
API rate limiting
Input validation and sanitization
SQL Injection prevention
XSS / CSRF protection
Secure password hashing
HTTPS / TLS
Encryption of sensitive information
Secure API key & secret management
OWASP API Security practices
Secure webhook verific