Building a Scalable Navigation System for a 30+ Module Super App

Recently, I interviewed with a European tech company for a Senior Android Developer role, focused specifically on app navigation architecture. Although I wasn’t selected, the experience made me reflect on something important: I’ve led the revamp of a dashboard in a large multi-wallet super app with 30+ modules — and designing scalable navigation in such systems is far from trivial. So instead of overthinking the outcome, I decided to share something more valuable: How to design a scalable, robust, and maintainable in-app navigation system for a super app (using a sample use case like Revolut), while addressing real-world architectural challenges like: Security orchestration Feature gating Deep link resolution Session validation Dynamic permission routing Multi-backstack state preservation Notification-driven entry Modular isolation In this article, I’ll break down how to design a robust, scalable navigation architecture for a 30+ module Android super app using Jetpack Compose + Navigat