We're looking for a solid Backend Developer who can independently own, maintain, and scale our production backend systems. Our applications handle real-time communication, digital transactions, wallet systems, and subscription-based payments.

We need someone with strong backend fundamentals and hands-on experience in payment gateway integrations, recurring subscriptions, UPI AutoPay, webhooks, and transaction management.
This is an ownership-driven role where you'll work directly on live production systems and solve critical backend challenges.

What You'll Do
Backend Development & Architecture
• Build, maintain, and optimize Node.js and Express.js backend services.
• Develop scalable REST APIs and manage MongoDB/Mongoose databases.
• Maintain WebSocket/Socket.io real-time communication.
• Work with Redis for caching, queues, and background processing.
• Optimize database queries, API performance, and backend scalability.

Payments & Subscription Management (Critical)
• Integrate and manage payment gateways including Juspay, Cashfree, Razorpay, PhonePe, or similar providers.




• Build and maintain UPI AutoPay and recurring subscription flows.
• Handle mandate registration, activation, recurring debits, renewals, cancellations, and failures.
• Implement secure payment webhooks and server-to-server payment verification.
• Manage payment status synchronization, transaction reconciliation, and settlement-related workflows.
• Handle failed payments, retries, duplicate transactions, and subscription lifecycle events.
• Build reliable wallet, ledger, and transaction management systems.
• Debug payment gateway issues and coordinate with payment provider technical teams.

Production & Infrastructure
• Independently manage backend deployments and production issues.
• Monitor server performance, logs, APIs, and application health.
• Debug and resolve critical production issues.
• Improve application reliability, security, and error handling.
• Work with AWS/GCP or similar infr

📌 Back End Developer (Noida)
🏢 ChatSpark
📍 Noida