API and System Integration

Overview

Most organisations run on several systems that need to share data. SubinLabs designs clean, versioned APIs and builds integrations with third-party services — payments, messaging, identity, CRMs and more — so information flows automatically and reliably.

Integrations are built defensively, with retries, idempotency, logging and clear error handling, because external systems will eventually misbehave.

Problems this solves

• Staff re-keying the same information into several systems
• Brittle integrations that fail silently
• Mobile and partner apps without a stable, documented API
• Payment or notification flows that are hard to trace when something goes wrong

Capabilities

• RESTful API design and documentation
• Authentication with tokens and scoped access
• Payment gateway integration
• Email, SMS and push notification services
• Webhooks, retries and idempotent processing
• Integration monitoring and audit logs

Typical use cases

• Exposing a secure API for a new mobile app
• Connecting a booking platform to a payment gateway and email service
• Synchronising records between an internal tool and a CRM

Delivery approach

1. Define the contract

   Agree resources, payloads, errors and versioning up front.

2. Secure the boundary

   Authentication, rate limiting, validation and least-privilege access.

3. Build for failure

   Retries, idempotency, timeouts and meaningful logs.

4. Document and hand over

   Clear API documentation and examples for every consumer.