API Integration Diagnostics

Looking for an API integration specialist to set up health monitoring for our Storeganise self-storage platform and the systems connected to it. These include access control (OpenTech, Nokē, PTI, Salto), accounting (Xero, QuickBooks), payments (Stripe, Mollie), comms (Twilio, SendGrid), HubSpot, Zapier, and GA/GTM tracking. You’ll set up API and webhook monitoring and build daily reconciliation checks to catch silent sync failures, such as overdue tenants who aren’t locked out or invoices missing from Xero. You’ll also create a weekly end-to-end test booking and set up alerts for errors, latency, and expiring tokens or certificates. You should have solid experience with REST APIs, OAuth and webhooks, plus tools like Checkly, Postman, Datadog or OpenTelemetry. Storeganise or self-storage experience is a strong plus.