Third-Party API & Microservice Integration

Your product depends on payment gateways, CRMs and other services that don’t talk to each other on their own. We build secure, documented integrations and microservices so your systems share data without friction.

Scalable connections to the tools your business runs on

Digital products don’t work in isolation. They rely on third-party services and internal tools to give users a complete experience. At Quantzi, we build applications that connect smoothly and securely with everything from payment gateways and CRM systems to OpenAI, marketing tools and custom APIs. Whether you need to sync user data across platforms, automate business logic or connect your frontend to dynamic services, we build flexible, reliable integrations so your systems talk to each other without friction.

We build integrations and APIs as microservices, so your backend is modular, scalable and easier to maintain as your platform grows. Each service has a clear interface, solid error handling and performance-optimised queries. Whether you’re launching a product that needs third-party plugins or modernising a monolith into loosely coupled services, we build architectures that grow with your needs. Our pipeline includes version-controlled APIs, security practices like token-based authentication and rate limiting, and clear documentation for internal teams and external partners.

We build AI-ready APIs from the start. Our systems can plug into GPT models, vector databases, recommendation engines and other AI/ML services without a full rebuild. Whether you want semantic search, automation or real-time personalisation, our APIs are structured to support these features when you’re ready to switch them on. With Quantzi, your platform connects today and can add AI later.