From 20M to 90M Users: A Fintech Super-App’s Scale-Up

Challenges

A leading fintech provider in South-East Asia offers a popular super-app that transforms mobile devices into virtual wallets, serving over 80 million users, 400+ billers, 139,000+ merchants, and 300,000+ community stores. That scale, though, was starting to outpace the infrastructure behind it. The client’s legacy virtual machines struggled to keep up with the demands of a rapidly growing user base, and core app features like “buy load” and “bill-pay” experienced performance issues, including slow response times, frequent downtimes, and limited scalability. The outdated infrastructure lacked the flexibility to support increasing transaction volumes and seamless service availability, directly impacting user satisfaction. On top of that, the client faced real challenges maintaining system reliability while introducing new features, leading to delays in time-to-market and higher operational costs. To meet growing user demand, improve service availability, and enhance user experience, the client needed a modernized solution that could accelerate time-to-market for new features, ensure system reliability, and reduce operational costs.

Solution

  • A Modernized, Scalable Super-App

    Ascendion modernized the app by containerizing the application with Kafka for scalability, giving the platform room to grow without buckling under peak transaction volume. 

  • Reliability and a Smoother Experience, Built Together

    System reliability was strengthened with health checks and better error handling, catching issues before they became outages rather than after. Ascendion also upgraded the iOS and Android apps for a better user experience, rounding out a modernization effort that touched both the infrastructure underneath and the experience users interacted with directly.

Tech Stack:

Kafka Containerization iOS Android

Business Impact

Enabled user growth expansion from 20 million to 90 million users between 2019 and 2024.

Achieved a 15.5% increase in users within a year.

Delivered a 30% reduction in maintenance costs.

Drove 51% higher user engagement.