Own the complete backend for a consumer product handling real-time inventory locking and payment processing — sole backend owner, full architectural responsibility.

Key Responsibilities
- Design and build REST APIs in Node.js + Express + TypeScript
- Design MongoDB schemas with correct atomicity for concurrency-sensitive writes (no double-bookings/double-charges)
- Implement time-based locking using Redis (TTL locks / job queues)
- Integrate a payment gateway server-side — payment intents, signature verification, webhook handling
- Integrate Facebook OAuth login and secure session/token management
- Own deployment to AWS and/or DigitalOcean (Docker, basic CI/CD, S3/CDN as needed)
- Write secure, defensive, production-grade API code and independently debug production incidents

Must-Haves
- Node.js, Express,



TypeScript — real type-secure API design
- MongoDB (schema design, transactions, indexing)
- Redis (locks, caching, or queue-based patterns)
- Experience integrating at least one payment gateway server-side, incl. webhook verification
- OAuth-based login integration experience
- Comfortable with AI-assisted coding, but able to defend the security and correctness of every line shipped — this will be tested in interview

Nice-to-Haves
- BullMQ or similar Redis-backed queueing
- Idempotent API design experience
- Docker/docker-compose, broader AWS services (S3, CloudFront, SES/SNS)

Pay: ₹30,000.00 - ₹45,000.00 per month

Work Location: In person

📌 Backend Developer (Jaipur)
🏢 DA AFK Ventures Private Limitd
📍 Jaipur