Introduction 

Indian fin-tech application. The client wanted to develop a fin-tech application to facilitate the demand for cash withdrawals outside ATMs in the economy. Hence, we were required to develop a mobile application solution that fulfills the functional requirements of user experience, scalability, robustness & security.

• A mobile first design (Android & iOS compatible) that uses ionic & angular for the frontend

• Microservices approach is adopted using AWS services to achieve auto scalability

• Postgres database is used in conjunction with Node JS for data processing & storage.

• Integration with 3rd party modules through APIs: Identity Attestation, UPI Payments Gateway, SMS Notifications, Geolocation on Map, Customer Relationship Management

Impact

• Uptime for 18 hours on any given day 

• OWASP top 10 resilient security configuration 

• UI translation into local languages 

• Throughput / Response time of 6 seconds for a load of 100 users per second 

Technological Framework:

Why this setup?

Ionic and Angular enable a single codebase to run natively on both Android and iOS, reducing development effort while delivering a consistent, responsive user experience with local language support.

Why this setup?

AWS-based microservices with ECS and auto-scaling provide the capacity to handle 100 concurrent users per second, while KMS and Secrets Manager enforce OWASP-compliant security across all services.

Why this setup?

Deep integration with India's UPI ecosystem, identity verification, and location APIs ensures regulatory compliance, secure transactions, and a seamless user journey — meeting all fin-tech ecosystem requirements.

Takeaway

Zapcom delivered a secure, scalable Indian FinTech application enabling cash withdrawals outside ATMs, deployed across India with OWASP-compliant security, local language support, and 6-second response time at 100 users/second.