Shopify API Developer
Custom apps, webhooks and syncs built against Shopify's API properly — rate limits respected, failures retried, nothing dropped silently.
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The API is easy to call. It's hard to call correctly at volume.
Anyone can fire a request at Shopify’s API and get a response back in a test environment. The real work starts when volume climbs: rate limits get hit, a webhook arrives twice, a request times out mid-checkout on a Friday afternoon.
Built properly, none of that becomes your problem to notice. Requests back off and retry within Shopify’s limits instead of failing outright. Webhooks are handled idempotently, so a duplicate delivery doesn’t duplicate an order. Every failure is logged and alerted on, not silently swallowed.
Every request handled, every failure caught, nothing silently dropped
Get in touchWhat separates working code from code that survives Black Friday.
Shopify’s API is well documented, but documentation doesn’t tell you how your app should behave when three things go wrong at once. That’s the part that takes 17+ years of building software to get right, not an afternoon with the docs.
What we build into every custom app and integration:
- Custom apps built against the Admin or Storefront API, in GraphQL or REST depending on what the job needs, scoped to exactly the access they need and nothing more.
- Webhook handling that’s idempotent by design, so retried or duplicate deliveries never create duplicate orders, refunds or stock movements.
- Rate-limit-aware request handling, with proper backoff and queuing so a busy period slows down gracefully instead of failing outright.
- Retry logic with clear limits, so a broken request gets flagged for a human instead of looping forever.
- Version tracking, so when Shopify deprecates or changes an API version, your integration is updated ahead of the cutover, not after something breaks.
- Structured logging and alerting from day one, so you find out about a failed request before your customer does.
We build the same way whether it’s a small custom app or the API layer underneath a full integration to a vast range of other systems — production discipline doesn’t scale down just because the job looks small.
Shopify API developer, answered.
What does custom Shopify API development cost?
It depends on the scope of the app or integration and how much of Shopify's API surface it touches. We scope the work properly first — including expected volume and edge cases — then give you a fixed, itemised quote before any code is written.
How do you handle Shopify's rate limits?
Every request is built to respect Shopify's limits rather than fight them — with backoff, queuing and prioritisation so critical requests get through first during busy periods, instead of failing outright.
What happens if Shopify changes or deprecates an API version?
We track version deprecations and update your integration ahead of the cutover date, not after something breaks in production. Version changes are one of the most common causes of integrations quietly failing, and monitoring catches the deprecation notice before the cutover does.
Can you build a custom app for a specific workflow we have?
Yes — that's a large part of the work. Where Shopify's existing apps don't fit a specific process, we build a custom app against the right API, scoped tightly to what it needs to do, and maintained as Shopify's platform evolves.
How do you stop duplicate webhooks causing duplicate orders?
Every webhook handler is built to be idempotent — designed so processing the same event twice produces the same result as processing it once. That's a deliberate engineering choice, not an afterthought, because Shopify's own documentation is upfront about duplicate deliveries happening.