WorldRemit Payment Gateway Integration Case

WorldRemit engaged Patternica to build a tailored payment-gateway integration that would dramatically reduce transaction costs and improve payment flows. They required an architecture capable of handling high volumes, multiple currencies, global coverage and ultra-low latency.

WorldRemit engaged Patternica to build a custom payment gateway integration with a clear business goal:

• reduce transaction costs
• speed up time to market
• support high transaction volumes
• handle multiple currencies and countries
• ensure low latency and high reliability

This was one of the first large-scale enterprise projects for Patternica. We performed deep research of the existing WorldRemit architecture, compliance rules, regulatory requirements and gateway partner specifications (under NDA). The system was fully microservices based, so the integration required close work with multiple internal engineering teams, internal technical management and alignment across services.

This is a classic scenario where a CTO or Head of Engineering might search:

• “payment gateway integration services for fintech”
• “how to reduce transaction fees in payment processing”
• “fintech payment integration outsourcing partner”
• “high-volume payment gateway integration case study”

WorldRemit is a global money-transfer provider supporting millions of users across dozens of countries. With cross-border payments, speed, security and low cost are key differentiators.

High development standards were applied during delivery - automated testing, load testing, quality gates, CI/CD pipelines, performance validation and documentation processes - ensuring reliability, scalability and predictable behaviour under high transaction volume.

The full delivery cycle lasted around 1 year including development, rollout - operating almost as an internal engineering capability inside WorldRemit.

The client needed more than just developers, they needed a technical outsourcing partner capable of operating as an extension of their internal engineering team, while navigating compliance, architecture constraints, and enterprise-level performance requirements.

Patternica was selected due to:

• deep experience in fintech system integrations
• ability to build and manage a dedicated delivery team
• experience working inside complex, microservices-based architectures
• focus on cost optimization and scalability, not just implementation

We started with an in-depth analysis of the existing platform architecture, internal services, compliance rules, regulatory requirements, and payment gateway specifications (under NDA).

Because the system was fully microservices-based, the integration required close coordination with multiple internal engineering teams and technical stakeholders.

Typical search intent this phase matches:

• “payment gateway integration microservices”
• “fintech compliance payment systems”
• “enterprise payment integration architecture”

For this project, Patternica assembled a dedicated delivery team operating almost like an internal unit:

• 1 Business Analyst
• 1 Team Lead
• 3 Backend Developers
• 1 Automation QA Engineer

This setup allowed rapid alignment, predictable delivery, and tight integration with the client’s internal roadmap.

Typical search intent this phase matches:

• “dedicated engineering team for fintech”
• “outsourced payment integration team”
• “technical outsourcing partner fintech”

When fintech companies need to optimize payment costs and integrate complex payment gateways, internal teams alone are often not enough.

Patternica acted as a trusted technical outsourcing partner, delivering a scalable, compliant, and cost-efficient payment gateway integration, fully aligned with the client’s architecture and growth plans.

If you’re a CTO, Head of Engineering, or Product Leader asking:

“How do we integrate a payment gateway fast, reduce transaction costs, and avoid long hiring cycles?”

Patternica can help you build custom payment integrations tailored to your business logic, compliance requirements, and scale ambitions.

Contact us now to discuss your payment integration challenges.