Shopify Integration Services
Most Shopify problems that look like store problems are actually integration problems. The inventory that oversells, the orders that don’t reach the warehouse, the finance team re-keying numbers by hand: none of that is fixed in the theme. It’s fixed in the plumbing between Shopify and the systems around it.
We’re a Shopify-focused agency with 14+ years on the platform, and we build that plumbing as real software. Every integration ships with retries, idempotent writes, and observability, because the failure mode that matters isn’t the happy path, it’s what happens at 2am when a webhook times out and nobody’s watching.
Integrations We Build
We connect Shopify to the systems a growing store depends on. Each one has its own quirks, so we design the sync per data flow rather than forcing everything through one mode.
ERP integration
Custom connections to ERP systems like NetSuite, Microsoft Dynamics 365 Business Central, and SAP. Products, inventory, orders, and fulfillment status kept in sync so your finance and operations teams stop re-keying data between systems. Because we build the integration rather than reselling a rigid connector, we map the fields and rules your business actually runs on.
3PL, WMS, and carrier integration
Order and inventory sync with third-party logistics providers and warehouse systems, plus live carrier rates at checkout and automated label dispatch. This is the layer that decides whether fulfillment scales cleanly or turns into a manual bottleneck as volume grows.
CRM and marketing sync
Customer and order data flowing into your CRM or marketing platform so segments and flows fire on real behavior rather than stale exports. This pairs closely with our Klaviyo email marketing work when the goal is retention revenue.
Marketplace and POS sync
Inventory and orders reconciled across marketplaces, in-person point of sale, and your Shopify storefront, so a sale in one channel updates stock everywhere without anyone reconciling spreadsheets by hand each night.
Custom API integration
When the system you need to connect has no off-the-shelf app, we build against Shopify’s Admin and GraphQL APIs directly, with webhook handling that survives retries and outages. This is the same discipline behind our custom app development, applied to the connection layer.
Why Integrations Break
Most failed integrations share a root cause: they were built as a script, not as software. A script fetches data and writes it once. It has no memory of what already synced, no plan for a timeout, and no way to tell you it stopped working. So it runs fine in the demo and fails quietly in production, and you find out when a customer complains.
We build the boring parts that keep an integration alive:
- Idempotency. Writes are safe to retry, so a replayed webhook doesn’t double an order or corrupt a count.
- Retries with backoff. Transient failures (a rate limit, a brief outage) recover on their own instead of dropping data on the floor.
- Observability. We can see exactly what synced and what didn’t, so a problem surfaces as an alert rather than a surprise on a spreadsheet.
- Webhook durability. Missed or out-of-order webhooks get reconciled, because Shopify does not guarantee perfect delivery and a naive listener will lose events.
We build on Gadget.dev, which gives the managed infrastructure and background job handling this kind of work needs, so the reliability is in the foundation rather than bolted on after the first outage.
Proof: Integrations Running in Production
For Swiss Water, the global leader in chemical-free decaf, we built a custom integration for a multi-roaster marketplace: it routes each order to the right independent roaster, fetches live carrier rates per roaster origin at checkout, and dispatches shipping labels automatically. Manual order routing was eliminated, and their team reclaimed hundreds of hours per quarter.
For Housemart, a home-improvement brand with thousands of SKUs, we handled synchronization across multiple marketplaces and point-of-sale systems, in an Arabic-language setup, keeping inventory and orders reconciled across every channel.
What an Integration Costs
Pricing tracks complexity, not page count. A single well-defined connection (one system, a clear data flow, standard fields) usually starts in the low five figures. A multi-system setup, say an ERP plus a 3PL with conflict rules about which system wins, costs more because the business logic is where the real work lives. We scope after mapping the systems, so you get a fixed number before any code runs rather than an open-ended hourly meter.
Related Services
- Shopify app development when the integration needs a full custom app around it.
- Shopify Plus agency for enterprise ERP and B2B integrations on the Plus tier.
- Platform migrations when systems need re-integrating after a replatform.
- Fractional ecommerce CTO to own architecture across a complex, multi-vendor stack.
- Ecommerce consultant to place the integration inside a wider operations and growth plan.
Scope Your Integration
Tell us the systems you’re connecting, roughly how much data moves between them, and where the current setup hurts. We’ll map it, tell you honestly whether it’s a stabilize job or a rebuild, and come back with a scope and a fixed quote. Request an integration scope.
Features
ERP integrations (NetSuite, Business Central, SAP)
3PL, WMS, and carrier connections
CRM, marketplace, and POS sync
Custom Admin, GraphQL, and webhook API work
Process
We document every system, the data that moves between them, and where the current setup leaks or breaks.
Real-time vs batch, the sync direction, conflict rules, and how failures get caught and retried.
The integration on Gadget.dev with idempotent writes, retries, and observability from day one.
Alerting, Shopify API version upkeep, and support once it's live and carrying real volume.
FAQs
Which ERPs do you integrate with Shopify?
We build custom integrations to the systems merchants actually run, including NetSuite, Microsoft Dynamics 365 Business Central, and SAP, along with smaller inventory and accounting platforms. Because we build the connection ourselves rather than reselling a fixed connector, we can map the fields and rules your business actually uses instead of forcing your data into someone else's template.
Should the integration be real-time or scheduled?
It depends on the data. Inventory and order status usually need to be near real-time through webhooks so you don't oversell. Financial and catalog syncs are often fine on a schedule. We decide this per data flow during the design step rather than defaulting everything to one mode, because real-time everywhere is expensive and batch everywhere causes overselling.
Can you take over an integration that keeps breaking?
Yes, and it's common. We start with a short audit of the existing setup, find where it's failing (usually missing retries, no idempotency, or unhandled webhook failures), and give you a plan before committing to the rebuild. Sometimes we stabilize what's there; sometimes a clean rebuild is cheaper than patching.
How much does a Shopify integration cost?
It depends on the number of systems, the data volume, and how much business logic sits in the sync. A single well-defined connection usually starts in the low five figures; a multi-system ERP and 3PL setup with conflict handling costs more. We scope each integration after mapping the systems, so the number is settled before any code runs.
What happens when Shopify changes its API version?
Shopify ships API version updates a few times a year and deprecates old ones on a schedule. Under a maintenance retainer we track those deprecations and update your integration before anything breaks. Integrations left unmaintained are the ones that fail silently months later when a deprecated endpoint finally goes dark.
