Experience Required

· Strong back-end developer with proficiency in Node.js, Express.js/NestJS, TypeScript, and REST API design. Should leverage AI capabilities to minimize the coding time with improved quality.

· Proven hands-on experience integrating and managing payment gateways (credit/debit card, wallet, UPI, QR, and offline POS)

· Strong knowledge of API security (OAuth2.0, JWT, OCSP stapling, HTTPS headers)

• Working knowledge of containerization (Docker, Kubernetes).
  
• Implementation with Azure components i.e. Azure Devops, Cosmos, Azure SQL, Redis, Functions, Event Hub, Service Bus etc.
  
• Design and build advanced, scalable API on azure.
  
• Ability to understand business requirements and map it to the product.
  
• Act as a consultant to team members on technical matters.
  
• Integrate with other backend services (JSON, XML, etc.)
  
• Deep understanding of payment domain concepts:
  

o Payment authorization, settlement, reconciliation

o Chargebacks, refunds, and retry mechanisms

o Tokenization and PCI DSS compliance is a plus.

Preferred Qualifications

· Experience in FinTech / eCommerce / Loyalty platforms.

· Exposure to AI-driven fraud detection or anomaly detection systems is a plus.

· Familiarity with offline payment flows (POS, kiosks, QR terminals).

Soft Skills:

· Strong analytical and problem-solving skills.

· Ability to work independently and collaboratively with cross-functional teams.

· Excellent communication and documentation skills.

· High ownership and accountability in delivering secure, high-quality code.

• A good Investigator of Issues.