SahulatPay Digital Wallet

Wallet project background

SahulatPay is a consumer digital-payments product in Pakistan. Its public product descriptions include wallet management, transfers, bills and mobile top-ups, subject to the channels and services made available by the product. These describe the product's context; the development engagement below focuses on SignX's documented mobile and backend delivery.

A wallet project brings together the user-facing application and the services supporting its operations. Planning both parts as a connected product helps define the application's workflows and the backend responsibilities needed to support them.

Mobile and backend engineering

SignX developed a close-loop digital wallet application and its supporting backend services. The Flutter application was built for Android and iOS from a shared codebase, with backend services supporting the wallet's core operations and payment-related functionality.

The recorded stack includes Java, Spring Boot and PostgreSQL for the backend, with Flutter for the mobile application targeting Android and iOS.

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From development to store release

The documented engagement covered development through production deployment on the Google Play Store and Apple App Store. Store release was part of the delivery scope alongside the application and backend, rather than a separate handoff after engineering.

For a similar mobile product, application workflows, backend scope and release responsibilities should be agreed together. This defines what the development team is delivering and what the product operator will manage after launch.

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Project interfaces