Services / Technology

Shopify App Development

We build custom Shopify apps that are tailored solutions to meet your business needs through Shopify's app ecosystem and APIs

We build custom Shopify applications that extend the platform’s native capabilities and support complex, brand-specific workflows. Leveraging Shopify’s API alongside tools like Admin Apps & UI Extensions, Proxy Applications, and Shopify Flow, our developers create solutions that integrate seamlessly across both backend operations and frontend experiences. From internal tools that streamline team workflows to customer-facing features like personalization, automation, and advanced functionality, our apps are designed to enhance efficiency, improve usability, and scale brands, all while remaining fully embedded within Shopify’s ecosystem.

Extending Shopify’s backend for custom workflows

Custom Apps That Enhance Shopify’s Native Experience

Domaine builds custom Shopify applications that extend the platform’s capabilities and streamline operations. From backend tools that simplify team workflows to frontend features that create personalized experiences, our apps are designed to integrate seamlessly within Shopify’s ecosystem. Using Shopify’s API and modern developer tools, including Shopify Admin Apps & UI Extensions, Proxy Applications, and Shopify Flow Automations, we craft solutions that enhance functionality, improve efficiency, and align with each brand’s unique business logic.

Trey working at desk

Empowering Brands Within the Shopify Admin

We build Shopify Admin Apps and Admin UI Extensions that integrate directly into the Shopify Admin, creating intuitive tools for brands to manage data, workflows, and integrations. Using Shopify Polaris for a native experience, these apps enhance backend functionality, enabling brand operators to edit in bulk, visualize data, or execute custom business processes without leaving Shopify.

Phone with stickers

Custom Shopify Apps

Enhance the customer’s journey with tailored features such as advanced wishlists, product comparisons, custom pricing logic, and single sign-ons across various platforms. Domaine's engineering team builds custom apps using various platforms including AWS and Gadget.dev: a full-stack, serverless platform for rapid development and minimal maintenance, all depending on project needs and client requirements.

1. Custom Shopify POS app for SUPREME, managing the lottery for customers to get into the store for each product drop as well as the security and check-in process

2. Custom Returns app for SUPREME, to enable their returns flow

3. Custom Shopify POS inventory management system for Rothy's

4. Custom gift registry app for De Gele Flamingo

5. Custom single sign-on membership login for Hertha BSC

Person typing
Domaine office

Dynamic Functionality with Proxy Applications

Proxy Applications allow brands to deliver server-powered features directly within Shopify storefronts. By securely routing requests through Shopify’s App Proxy system, Domaine builds custom experiences such as quizzes, account management tools, or personalization layers, all running natively within the theme and aligned with Shopify’s performance and security standards.

Automate, Simplify, and Scale with Shopify Flow Automations

Shopify Flow automations streamline repetitive tasks and operational workflows without custom code. Domaine helps brands implement event-driven automations, triggered by actions like order creation or customer updates, to manage tagging, routing, and notifications. These lightweight, native workflows drive consistency, save time, and increase efficiency across the entire ecommerce operation.

Shopify App Development

Mobile screenshot of Ulla Johnson PLP
Lookbook
Store Locator
Custom Middleware
Omnichannel
Trunkshow
...
Ulla Johnson

Crafting a new website to match an elegant & timeless brand

IndustriesFashion & Apparel
stamps
mobile
Kinderpostzegels

Building a resilient digital platform for a national fundraising tradition

IndustriesConsumer Goods
Paper flower bouquet sitting on a table
Fresh Cut Paper Product Listing Page
Product Customizer
Multi-Ship
Bundling
Checkout Customization
Custom Discounts
...
Fresh Cut Paper

A blossoming customer experience (CX) in bespoke gifting

IndustriesFurniture & Home

Your brand has a bright future… Let’s build it.

We’ve developed over 750 Shopify sites for brands ranging from bareMinerals to NOBULL, and are committed to crafting innovative, boundary-pushing commerce solutions.

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Shopify App Development

Harry's lifestyle image
Commerce Insights

02.05.2026

Migrating Harry's From a Custom Commerce Platform to a Subscription-First Headless Shopify Experience

Harry’s ran a highly customized in-house commerce stack for years to support its subscription model, starter kits, and signature Mystery Item experience. As the business grew across brands and regions, the cost and complexity of that custom foundation started to slow experimentation. In Domaine Migrations Vol 03, Harry’s, Domaine, and Recharge share how the brand migrated to a headless Shopify architecture in seven months, preserved business-critical subscription logic, and set teams up to move faster with less technical overhead.

women shopping milk makeup on mobile
Shopify New Customer Accounts: Powerful Updates to Boost Enterprise Growth
Technology

10.11.2024

woman shopping online with multi ship for shopify
Simplify Shopping This Holiday Season: Domaine’s Multi-Ship Implementation for Shopify Stores
Technology

10.05.2024

Resale
4 Recommerce business models to make resale part of your e-commerce strategy
Commerce Insights

01.13.2022