Integrations & Custom Development

The Hard Stuff Is Where We Excel

Any agency can install a Shopify theme and configure a few apps. The real work starts when your store needs to connect to the business systems you already run, or when off-the-shelf apps simply don't do what your business requires.

Dewsign has been building custom ecommerce solutions and business system integrations for over 25 years. Before Shopify existed, we were connecting online stores to ERP systems, building bespoke order management workflows and developing custom applications for complex retail operations. That heritage gives us a depth of technical understanding that newer agencies simply don't have.

We build custom Shopify integrations, develop private and custom apps, and create bespoke functionality that turns your Shopify store from a standalone shop into a connected, automated commerce engine.

Integrations We Build

ERP and Accounting

We connect Shopify to enterprise resource planning and accounting platforms including NetSuite, Xero and SAP Business One. Orders, inventory levels, customer records and financial data flow between systems automatically, eliminating manual entry and reducing errors. For businesses processing hundreds of orders per day, this integration is the difference between scaling smoothly and drowning in admin.

CRM and Customer Data

Your customer relationships don't live in Shopify alone. We integrate with CRM platforms like HubSpot and Salesforce to ensure customer interactions, purchase history and engagement data are centralised and actionable across your marketing, sales and support teams.

Point of Sale

For businesses with physical retail locations, Shopify POS creates a unified inventory and customer system across online and in-store channels. We configure and integrate POS to ensure stock levels, customer profiles and order data sync in real time.

Email Marketing and SMS

Klaviyo is our primary email marketing partner, and the integration with Shopify is where it truly shines. We configure the data sync, build automated flows (welcome series, abandoned cart recovery, post-purchase sequences, winback campaigns), and ensure your email channel is working as a revenue driver, not just a newsletter tool. See our Email Marketing & Klaviyo page for the full picture.

Customer Service

Gorgias connects your Shopify store to your support team, centralising email, live chat, social media and phone enquiries in one dashboard with full order and customer context. We set up Gorgias with automation rules that route, tag and prioritise tickets so your team spends time helping customers, not searching for information.

Subscription and Recurring Revenue

For brands selling consumables, replenishable products or subscription boxes, we integrate Recharge and Appstle to manage recurring orders, subscription management and 'build-a-box' functionality. We pay particular attention to transaction fee structures and help you choose the subscription app that protects your margins.

Custom App Development

When no existing app does what you need, we build it. Shopify's app architecture allows for private apps that extend your store's functionality in ways limited only by what your business requires. Examples include custom product configurators that let customers build bespoke products, advanced pricing engines with rules-based logic, bespoke reporting dashboards that pull data from multiple sources, and automated workflows that connect Shopify to proprietary systems.

Middleware and API Development

Not every system has a native Shopify integration, and not every integration needs to be direct. We build middleware solutions that sit between Shopify and your other platforms, translating data formats, managing rate limits and handling the complexity of keeping multiple systems in sync. Our experience with Shopify's Admin API, Storefront API and Ajax API ensures that integrations are built to the platform's standards and best practices.

Automation and AI-Enhanced Workflows

Shopify Flow provides a powerful visual automation builder for Plus merchants, and we use it extensively to automate repetitive operational tasks. Beyond Flow, we implement AI-enhanced workflows for product data enrichment, automated tagging, dynamic merchandising and intelligent inventory management.

We use AI tools daily in our own workflows — from migration planning to content strategy to development — and we bring that same practical expertise to our clients' stores. This isn't AI for the sake of a buzzword — it's practical automation that saves time and reduces errors.

As AI capabilities in commerce continue to evolve — product recommendations, intelligent search, automated customer service, dynamic pricing — this is where new functionality will sit.

We're building with these tools every day, and we're ready to implement them for your store when they make commercial sense.

Integration Projects We've Delivered

Stovefitter's: Significant custom functionality including advanced product configuration and bespoke checkout logic, demonstrating what's possible when you go beyond standard Shopify capabilities.

IVF Matters: A multi-system integration connecting Shopify with Cliniko (clinic management), HubSpot (CRM) and SendGrid (transactional email) to create a seamless patient-to-customer journey.

Willow & Stone: Shopify POS integration unifying the online store with physical retail operations, providing real-time inventory visibility across all channels.