Custom Crypto Transaction Platform Development

The Story

The client partnered with FiftyFive to build a secure, scalable cryptocurrency payment platform comprising two core components: an Affiliate Flow system for user onboarding and trading, and a Merchant Payment system for transaction execution. FiftyFive provided full-cycle custom software development, system architecture, integrations, QA, and optimization. A dedicated engineering team delivered backend, frontend, and DevOps capabilities to build a compliant, high-performing fintech solution.

The client is a Sweden-based financial services company offering secure cryptocurrency payment solutions for e-merchants and consumers, focused on scalable blockchain-driven transactions across the Nordic market.

Amit Jangid

Founder & CTO

The challenge

• > Developing a secure cryptocurrency transaction engine supporting multi-flow processing.

• > Integrating Affiliate Flow and Merchant Payment modules with shared logic and independent scaling.

• > Implementing AML/KYC verification workflows with robust authentication logic.

• > Enabling seamless integration with external financial and operational third-party services.

• > Designing a modular, scalable architecture supporting white-label deployment.

• > Ensuring responsive UI, low-latency transactions, and stable merchant/admin back-office operations.

The solution

• > Built Affiliate Flow system using PHP, Laravel, and MySQL with modular service components.

• > Developed Merchant Payment system using Python, Django, and React with API-driven architecture.

• > Implemented AML/KYC workflows with secure profile verification and compliance logic.

• > Integrated required third-party services for identity checks, payment routing, and operational workflows.

• > Added white-label capabilities, including casino-focused configurations and customizable merchant flows.

• > Applied test-driven development, code optimization, and secure deployment practices for performance stability.

• > Deployed a dedicated engineering team including backend developers, frontend developers, QA engineers, and a project lead.

The outcome

FiftyFive delivered a fully functional, secure, and scalable crypto payment platform that improved transaction speed by enabling optimized payment routing, reduced verification time through automated AML/KYC workflows, and strengthened platform reliability with modular architectures. Merchant onboarding became faster, operational overhead decreased, and both admin and merchant teams gained better visibility through optimized dashboards. The platform’s white-label model expanded revenue opportunities, while improved system performance and security enhanced the client’s market credibility and customer trust.