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Shopify Plus agency in
the United Kingdom
Mejix is a certified Shopify Plus partner serving the United Kingdom. Working with British brands across London, Manchester, and the wider UK market. We help merchants migrate, scale, and modernise on Shopify Plus — DTC, B2B, and headless.
What we do for the UK merchants
Shopify Plus, end-to-end
From migration to launch to growth — one team, senior engineering velocity, and engagement leads in your timezone.
Shopify Plus implementation & migration
Magento, BigCommerce, WooCommerce, or custom — migrated to Shopify Plus with zero-revenue cutovers and SEO preserved.
Shopify Plus B2B & wholesale
Native company accounts, custom catalogs, NET terms, and quote-to-order flows for mid-market and enterprise.
Headless storefronts (Hydrogen / Next.js)
When OS 2.0 isn't enough — performant, SEO-safe headless storefronts on Oxygen or Vercel.
Conversion & growth retainer
Ongoing CRO, performance, merchandising, and analytics for Shopify Plus brands shipping every sprint.
ERP & integrations
NetSuite, SAP, Brightpearl, Cin7, Klaviyo, Avalara — wired up cleanly and monitored.
Custom Shopify apps & Functions
Where off-the-shelf doesn't fit. Built in TypeScript, deployed via Shopify Functions, app-store ready when needed.
Why local matters
A Shopify Plus partner in your timezone
On the ground in your market
Working with British brands across London, Manchester, and the wider UK market.
Regional coverage
Serving teams across London, Manchester, Birmingham, Edinburgh.
Senior engagement lead
Full-day overlap with the UK — standups, demos, and reviews on London business hours.
Certified delivery
Shopify Plus Partner, AWS / GCP / Azure aware, SOC-2-ready engineering.
From London DTC brands to UK B2B retailers, we deliver Shopify Plus, AI integration, and custom software with native-English engagement leads and senior engineers in your timezone.
Certifications & Recognitions
Our Work
Case Studies
Dish by Metro
We support DISH by Metro's Dish Pay platform with dedicated cross-functional teams delivering end-to-end product development — a high-volume digital payment solution serving the US restaurant market.
Dine Market
We built the Dine Market B2B wholesale ordering platform from scratch — digitising a food supply chain that previously ran on phone calls and spreadsheets, connecting restaurants and food suppliers across NY/NJ/CT.
Yehuda
We worked closely with Yehuda to develop a custom AI solution for automated diamond detection — reducing manual grading time and enabling the platform to process significantly higher volumes with consistent accuracy.
Reviews & Certifications
Our clients praise us for
our great results
Mejix has successfully created and launched a functional mobile app, which allows the client to reach and diagnose over 5,000 patients. Despite geographically dispersed clients, the team is accommodating and communicative. They've worked hard to deliver the project on time and within the budget.
Candice Wu
Head of Design, Yehuda
FAQ
Shopify Plus agency in the United Kingdom — common questions
Do you work with shopify plus agency clients in the United Kingdom?
Yes — Mejix delivers shopify plus agency engagements for clients across the United Kingdom and the surrounding region. From London DTC brands to UK B2B retailers, we deliver Shopify Plus, AI integration, and custom software with native-English engagement leads and senior engineers in your timezone.
Are your engineers in the same timezone as the UK?
Full-day overlap with the UK — standups, demos, and reviews on London business hours. Our engagement leads run discovery, demos, and reviews on your business hours, with senior engineers covering the rest of the workday.
Can you handle VAT, GDPR, and local compliance for the UK?
UK VAT, post-Brexit EU shipping, and GBP / multi-currency Shopify Plus configurations.
What does a typical shopify plus agency engagement look like?
We start with a fixed-scope discovery (1–2 weeks) to align on outcomes, then deliver in 2-week sprints with weekly demos. Most engagements run 3–9 months, with optional retainers for ongoing work.
Can your team meet on-site in the UK?
Yes — our engagement leads travel to the UK for kickoffs, workshops, and quarterly reviews whenever they move the work forward. Day-to-day delivery is remote across our New York and Cluj teams.
How can we help?
Whether you're scoping, migrating, or scaling — our Shopify Plus partner team is ready to help teams in the United Kingdom. Full-day overlap with the UK — standups, demos, and reviews on London business hours.