Belfast has developed into a growing technology and digital commerce hub, with businesses across retail, fashion, food and beverage, manufacturing, and professional services investing in modern eCommerce platforms. Shopify and Shopify Plus offer businesses a flexible foundation for launching new stores, modernizing legacy platforms, and scaling their online operations.

Whether you're starting a new Shopify store, migrating from WooCommerce or Magento, or building an enterprise-level Shopify Plus operation, choosing an experienced agency can help you achieve better performance, usability, and long-term growth.

Here are the Top 3 Shopify and Shopify Plus agencies in Belfast for 2026, selected based on Shopify expertise, technical capabilities, local presence, and eCommerce experience.

1. Weframe Tech

 

Weframe Tech One of the Most Trusted Shopify & Shopify Plus Agencies in Belfast, Serving Clients Globally.

Whether you're launching, scaling, or migrating we build Shopify and Shopify Plus stores that are fast, conversion optimised, and built to grow with your business. From custom storefronts to full scale enterprise implementations, we've delivered for brands across the USA, UK, Australia, Canada, UAE, Singapore, and beyond.

Why Brands Choose Weframe Tech for Shopify

We don't just set up Shopify stores. We build commerce experiences that perform technically, commercially, and creatively. Every engagement is backed by a team that understands both the platform and the business outcomes that matter.

100% job success score on Upwork

What We Build

• Custom Shopify Storefronts — fully bespoke theme development built around your brand and your customer.

• Shopify Plus Implementation — enterprise-grade builds for high-volume, high-growth brands.

• Headless Shopify — Shopify Plus as the commerce engine, paired with Next.js or Nuxt.js for a fully custom frontend experience.

• Shopify Migration — seamless migrations from WooCommerce, Magento, BigCommerce, Salesforce Commerce Cloud, or any legacy platform.

• Shopify Speed Optimisation — Core Web Vitals, Lighthouse scores, and page performance tuned for conversion.

• Conversion Rate Optimisation (CRO) — data-driven design and development decisions that increase revenue per visitor.

• Shopify App Integration — connecting your store to your full commerce stack seamlessly.

• Shopify Internationalisation — multi-currency, multi-language, and multi-market setups for global brands.

• Shopify B2B & Wholesale — custom B2B portals, pricing rules, and account management built on Shopify Plus.

• Ongoing Retainer & Growth Support — a dedicated team that continues to optimise, test, and grow your store post-launch.

Our Shopify Tech Stack

Storefront & Themes
Shopify Liquid, Shopify Hydrogen, Dawn, Custom Theme Development

Headless Frontend
Next.js, Nuxt.js, Astro.js, Remix

CMS & Content
Sanity CMS, Contentful, Storyblok, DatoCMS, payload cms ,strapi cms, directus cms 

Search & Discovery
Algolia, Searchie, Boost Commerce, Constructor.io

Reviews & Social Proof
Okendo, Yotpo, Stamped, Judge.me

Subscriptions & Loyalty
Recharge, Skio, Loyalty Lion, Smile.io, Yotpo Loyalty

Email & Retention
Klaviyo, Omnisend, ActiveCampaign, Drip

Analytics & CRO
Google Analytics 4, Hotjar, FullStory, Triple Whale, Northbeam, Heap

Personalisation & A/B Testing
Optimizely, VWO, Dynamic Yield, Ninetailed

ERP & Backend
SAP, NetSuite, Microsoft Dynamics 365, Brightpearl

Payments & Checkout
Shopify Payments, Stripe, Klarna, Afterpay, PayPal, Braintree

OMS & Fulfilment
ShipBob, ShipStation, Brightpearl, Fluent Commerce

Infrastructure
Vercel, Netlify, Cloudflare, AWS

Who We Work With

We work with DTC brands, luxury retailers, enterprise ecommerce businesses, and high-growth startups that take their Shopify store seriously. Our clients include:

• Certify — $50M funded healthcare company

• Slingshotbio.com — $49M funded biotech company

• Unimig — Australia's largest welding manufacturer

• Skin Laundry — One of the largest skin treatment brands in the USA, $3M+ venture funded

• Abaxx Exchange — Publicly listed fintech company

• Catalyser

We've also had the privilege of working with globally recognised brands including Ferrari, Bentley, Keepway, Lulu Mall, and Bellini.

Where We Work

We are a globally distributed agency serving clients across:

• 🇺🇸 United States

• 🇬🇧 United Kingdom

• 🇦🇺 Australia

• 🇨🇦 Canada

• 🇦🇪 United Arab Emirates

• 🇸🇬 Singapore

• 🇪🇺 Europe

• 🇮🇳 India

No matter where you are, our team operates across time zones to deliver without delay.

If Any of These Sound Familiar We Should Talk

• Your Shopify store is slow and losing conversions.

• You've outgrown your current theme and need a fully custom build.

• You're migrating from another platform and need it done without disruption.

• You need Shopify Plus capabilities — B2B, multi-market, advanced checkout.

• You want a headless storefront that gives you full design and performance freedom.

• You need a long-term partner, not just a one time developer.

Every project we take on is treated as a commercial problem first and a technical one second. We don't just build stores we build revenue generating commerce infrastructure.

Let's build your best performing store yet.

2. Glaze Digital

Glaze Digital is a Belfast-based digital agency that helps businesses create and improve their online presence through eCommerce development, web design, and digital strategy. The agency combines creative design with technical development to build user-friendly online stores focused on performance, usability, and conversions. Its Shopify capabilities make it a suitable option for businesses looking for a customized storefront supported by broader digital expertise.

Key Services

• Shopify Store Development

• Shopify Plus Development

• Custom Shopify Theme Development

• eCommerce Website Design

• Shopify Store Migration

• UX/UI Design

• Third-Party Integrations

• SEO & Performance Optimization

• Ongoing Shopify Support

3. Invisible Building

Invisible Building is a digital agency that helps brands create modern eCommerce and digital experiences through a combination of strategy, creative design, and technical development. The agency focuses on building distinctive, user-focused online experiences that align with a brand's identity and commercial objectives. Its Shopify capabilities can support businesses looking for custom storefronts, integrations, and ongoing improvements rather than relying solely on standard Shopify templates.

Key Services

• Shopify Store Development

• Shopify Plus Development

• Custom Shopify Theme Development

• eCommerce Website Design

• Shopify Store Migration

• UX/UI Design

• API & Third-Party Integrations

• Conversion Rate Optimization

• Performance Optimization

• Ongoing Shopify Support

Final Thoughts

The right Shopify agency depends on your business requirements, budget, and long term growth plans. WeframeTech is a strong option for custom Shopify development, Shopify Plus, headless commerce, and performance optimization. Big Wet Fish offers a combination of eCommerce development and creative digital services, while Ardmore provides broader digital strategy, design, development, and marketing capabilities.

Before making a decision, compare relevant Shopify case studies, technical expertise, integration capabilities, and post launch support to find the agency best suited to your eCommerce goals.