A Cross-Platform Payment SDK Built for Secure, Scalable Transactions
We engineered a PCI-compliant, modular payment SDK that enables seamless transaction handling across Android, iOS, React Native, and web applications—with hosted fields, tokenization, and strong encryption built in.
Introduction
The client needed an advanced, secure Payment SDK that could integrate effortlessly into Android applications and scale across multiple platforms. Their core challenges included ensuring PCI-DSS compliance, enabling hosted fields for flexible UI control, and supporting multiple frameworks such as Jetpack Compose, XML views, React Native, Swift, and JavaScript. The ultimate goal: a stable, developer-friendly SDK that simplifies payment integrations while meeting strict fintech security standards.
The Challenge
Building a PCI-compliant payment SDK required deep understanding of compliance rules, secure data flow management, and hosted field isolation. The team faced obstacles such as:
- Implementing PCI-DSS-compliant tokenization for handling sensitive card data
- Supporting hosted fields that allow developers to use their own UI while securely capturing inputs
- Designing a cross-platform architecture compatible with Android, iOS, React Native, and web apps
- Ensuring SDK stability through automated testing, CI/CD, and real device testing
- Delivering a multi-module, extensible SDK to allow rapid future enhancements
Our Approach
We built the SDK from the ground up with scalability, compliance, and developer experience at its core.
PCI-Compliant Secure Architecture
Encrypted card data handling, tokenization workflows, and secure API interactions were implemented following strict PCI-DSS guidelines.
Hosted Fields Integration
Developers can style their own input components while the SDK securely handles sensitive data behind the scenes.
Multi-Module SDK
Separated into smaller libraries to ensure lightweight builds, faster builds, and easier maintenance.
Automation & Quality Assurance
Integrated CI/CD pipelines, unit tests, and BrowserStack device testing for consistent performance across devices.
The Impact
+70%
Faster Integration
–85%
Security Risk
3×
Platform Coverage
99.4%
Stability
Making IT Possible
Making IT Possible
Making IT Possible
Making IT Possible
Making IT Possible
Making IT Possible
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