API Development & Integration
What happens when your CRM needs to talk to your payment provider, and your payment provider needs to talk to your shipping carrier? That's the everyday reality of API work: designing a clean REST or GraphQL interface for your own systems, then wiring it up to third-party services like a payment gateway, a logistics carrier's tracking API, or an existing CRM or ERP platform. Webhooks handle the real-time side, pushing an order-status change or a payment confirmation the moment it happens instead of polling for updates. The part teams underestimate is versioning: an integration that works today can break silently when a partner ships a breaking API change, so runIT versions endpoints deliberately and maintains backward compatibility so downstream systems don't fail without warning.
What's included
REST or GraphQL API design with clear versioning (e.g., /v1, /v2) to avoid breaking changes.
Third-party integrations with payment gateways, shipping/logistics carriers, or CRM and ERP platforms.
Webhook implementation for real-time event sync instead of inefficient scheduled polling.
API documentation and a backward-compatibility policy so partner systems keep working after updates.
Why runIT
We design API versioning in from the start (URL or header-based), so when a partner changes their API, your integration degrades gracefully instead of failing without warning.
runIT has built both REST and GraphQL interfaces and knows when each one actually fits, GraphQL for flexible client queries, REST for simple, cacheable, widely-compatible endpoints.
Webhook reliability is a detail people skip: we implement retries, signature verification, and idempotency keys so duplicate events don't create duplicate orders or double payments.
As smooth as a software deploy.
Sprint-focused, transparent, measurable. You see what we do at every step.
Brief & Strategy
We clarify goals, users and technical constraints. Work begins on day one.
Design & Architecture
UX flows, system architecture and data models run in parallel.
Build & QA
CI/CD pipeline live in the first week. Automated tests, code review, observability — by default.
Ship & Grow
Post-launch SEO, performance and analytics keep growth compounding.
This same system, shipped before.
Pilates Rehberi and Pilates Studios UK are live examples of the programmatic-SEO local-directory system you're looking at right now — built, launched and ranking.
Frequently asked questions
What happens to our integration when the third-party API changes?
This is exactly why we version APIs deliberately instead of building a single hard-coded connection. When we integrate a payment provider or carrier, we isolate that logic behind an internal interface, so if the external API changes its contract, we update one adapter instead of rewriting your whole system. We also monitor deprecation notices from major providers so a breaking change doesn't surprise you in production.