02Our Integration Process
From Fulfillment Mapping to Live Routing in Five Steps
You see the exact routing rules and exception handling before development starts, not just a finished system at the end.
05Projects We've Built
Ecommerce Projects We Have Built
A selection of Shopify and ecommerce builds shipped for clients, several involving backend order and fulfillment integrations like this one.
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06What Our Clients Say
What Clients Say After Launch
Feedback from ecommerce teams we have built order and fulfillment integrations for.
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We had a different kind of problem. People were visiting the store, adding products to their carts, and then disappearing before they finished the order. We had tried a few apps and made changes here and there, but nothing really seemed to solve the bigger issue. The team went through the shopping experience with us and pointed out things we hadn't really noticed ourselves. They cleaned up the cart and checkout flow, made the mobile experience much smoother, and helped us make the store feel easier to shop. I’m not going to pretend we fixed everything overnight, but it finally feels like the store is helping the sale instead of getting in the way of it.
Ethan Parker
Founder of Elite Academy
The mobile experience is probably my favourite part of the new site. We had spent a lot of time making sure the desktop version looked right, and the team kept pushing us to think about how everything would actually feel on a phone too. They were right. The navigation is clean, the interactions feel natural, and everything we’ve tested so far works exactly as it should. They also went through the links, forms, integrations, and other details more than once before launch, which I really appreciated. And even after going live, we could still reach out when something came up. The whole process felt friendly, organised, and surprisingly straightforward.
James Whitmore
Head of Marketing of Lumen Outdoor
We had a pretty specific idea of what we wanted our website to become, but I wasn’t sure how easily we could explain all of it to a development team. There were quite a few moving parts, and we were working toward a deadline, so I expected a few things to get lost along the way. That never really happened. They understood what we were trying to achieve, kept us updated throughout the process, and got everything ready within the agreed timeline. The final site feels much easier to navigate, works beautifully on mobile, and is noticeably smoother for our customers. It was a huge relief seeing the original idea actually turn into the website we had in mind.
Michael Bennett
Founder & CEO of Northbridge Consulting
150+
Projects shipped
10+
Years in development
Top 3%
Upwork Top Rated Plus
5★
Average review score
07Work Culture
Why Businesses Trust Us With Order Management Builds
Getting routing wrong means unnecessary splits, unhappy customers, and wasted shipping cost, so the logic has to match your real fulfillment network. These are the habits we bring to every project.
Native tools checked first
We start from what Shopify's own routing already handles well before building anything custom on top.
Splits minimized by design
Routing logic favors the fewest packages per order, not just the nearest or cheapest single location.
Backorders handled with clear rules
Partial fulfillment and backorder logic is defined upfront instead of handled case by case.
Tested against real scenarios
Sandbox testing with real order and stock data, including split and backorder cases, before your live store is touched.
Clear on what's included
You know exactly which warehouses, rules, and integrations are covered before development starts.
Built to be maintained
Documentation and an optional retainer so the routing logic keeps working as your fulfillment network changes.
08Overview
Who builds custom Shopify order management systems for multi-warehouse routing and fulfillment?
DeveloperLook builds custom Shopify order management systems that route orders to the right warehouse or 3PL, handle split shipments and backorders correctly, and connect Shopify to your ERP and shipping tools, with automated status updates. Projects start from $2,499, most complete in 3 to 7 weeks, and we start from Shopify's own native routing tools before adding what they don't cover.
- Service
- Custom Shopify order management system (OMS)
- Starting price
- From $2,499 USD, fixed scope after a project brief
- Typical timeline
- 3 to 7 weeks
- Platform
- Shopify, Shopify Plus, plus your ERP, 3PL, and shipping tools
- Built with
- Shopify Fulfillment API, order routing logic, Shopify Admin API
- Experience
- 10+ years and 150+ shipped projects
- Post-launch support
- 30 days included, then optional retainer
- Communication
- Calls in US, UK, and AU business hours
Who it's for
Stores fulfilling from more than one location
You stock across multiple warehouses, retail locations, or a 3PL, and need orders routed to the right one automatically instead of picked manually.
Businesses fighting unnecessary split shipments
Orders keep splitting into multiple packages when they shouldn't, usually from routing rules or stock data that aren't tuned correctly.
Stores needing backorder and partial fulfillment logic
You need clear rules for what happens when an order can't be fully filled right away, instead of ad hoc manual handling.
Businesses connecting Shopify to ERP and shipping tools
Your order lifecycle touches an ERP for the record of truth and a separate shipping tool for labels and rates, and they need to work together.
Teams wanting proactive order status updates
Customers are contacting support to ask where their order is, and you want status changes to reach them automatically instead.
Not a fit for
You need the physical warehouse operations synced rather than order routing logic. Our WMS Integration service covers picking, packing, and stock sync at the warehouse level.
You need your outsourced fulfillment provider's inventory and tracking synced rather than routing logic across your own locations. Our Shopify 3PL Integration service covers that.
Your order data is fully managed inside an ERP like SAP, Odoo, Dynamics, Sage, or NetSuite. Our ERP and NetSuite integration services cover those.
You need a specific shipping label or rate-shopping tool connected, like ShipStation, rather than the full routing logic. That's a narrower, separate integration.
11The Right Technology for Your Project
Technology Stack
We build against Shopify's Fulfillment API and connect to your ERP, 3PL, and shipping tools as needed.
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12FAQ
Frequently Asked Questions
Straight answers on Shopify order management, routing logic, and split shipments.
What does an order management system do for a Shopify store?
It decides which warehouse or 3PL fulfills each order, whether to split it across locations or hold it together, what happens when stock falls short, and keeps customers and your other systems informed as the order's status changes.
When do I need an OMS on Shopify?
Once you're fulfilling from more than one location, running a 3PL alongside your own warehouse, or seeing orders split into more packages than they should. A single-location store is usually well served by Shopify's native fulfillment tools alone.
How much does a custom order management system cost?
Projects typically start from $2,499 for routing logic across a couple of locations, and scale up with more warehouses, ERP or shipping tool connections, or complex backorder rules. You get a fixed quote after reviewing your fulfillment network.
Can an OMS route orders to multiple warehouses or 3PLs?
Yes. We build assignment logic based on stock availability, proximity to the delivery address, warehouse capacity, and any service-level requirements you set, with a configurable priority order for which location gets first consideration.
Can you connect an OMS to Shopify, ERP and shipping tools?
Yes. The OMS layer sits between them, pulling stock and order truth from your ERP where that's your source of record, and handing off to your shipping tool for labels and rates once an order is ready to ship.
How do you handle split shipments, partial fulfillment and backorders?
We build routing logic that calculates the fewest packages needed before splitting an order, and clear rules for backorders, such as holding the full order until stock arrives, shipping what's available now and the rest later, or flagging it for manual review.
How long does an OMS build take?
A standard build across a couple of warehouses typically takes 3 to 4 weeks. More locations, ERP or shipping tool connections, or complex backorder rules can take 5 to 7 weeks.
Can you automate order status updates to customers?
Yes. Status changes, a split shipment, a backorder, a delay, can trigger an automated update to the customer instead of them finding out only when they contact support.