Ecommerce Development
Ecommerce consulting and development for brands that are serious about growing online. Shopify Plus certified. Delivery guaranteed.
Expert
Team
Proven
Results
On-Time
Delivery
Why Mejix
Why you need an ecommerce development partner?
Most ecommerce problems aren't platform problems — they're execution problems. The wrong architecture, a poorly planned migration, a storefront that doesn't convert, or an integration that breaks under load. The brands that grow online consistently are the ones with a technical partner who understands both the commerce strategy and the engineering required to execute it. That's what Mejix delivers.
You need this service if:
Your store isn't converting at the rate it should
Traffic is there but sales aren't. The problem is usually the storefront experience — slow load times, friction in checkout, a product page that doesn't build confidence, or a mobile experience that's been an afterthought.
You've outgrown your current platform
Shopify Basic, WooCommerce, or a custom-built store that was right two years ago but can't handle your current volume, catalogue complexity, or B2B requirements. You need to move — and move without losing SEO or revenue.
Your integrations are fragile or manual
Your store, ERP, CRM, warehouse, and marketing tools don't talk to each other reliably. Orders get stuck, inventory goes out of sync, and your team spends time on manual reconciliation that should be automated.
You need features your platform doesn't support
Subscription models, B2B pricing tiers, custom checkout flows, loyalty programmes, multi-currency, multi-language — requirements that go beyond what a standard theme and off-the-shelf apps can handle.
How do we solve
End-to-end ecommerce consulting and development
From ecommerce strategy and platform selection through to custom builds, migrations, integrations, and ongoing optimisation — we cover the full ecommerce lifecycle.
Ecommerce Consulting & Strategy
We start by understanding your business model, growth targets, and technical requirements — then recommend the right platform, architecture, and roadmap. We help you make the right decisions before you build, not after.
Shopify Plus Development
As a certified Shopify Plus Partner at the Plus Tier, we build custom Shopify Plus stores from the ground up — custom themes, Checkout Extensibility, Shopify Functions, and Hydrogen headless builds.
Platform Migration
We migrate stores from Magento, WooCommerce, BigCommerce, and legacy custom platforms to Shopify Plus — preserving SEO rankings, redirecting legacy URLs, migrating product data cleanly, and keeping revenue flowing.
Systems Integration
We connect your Shopify Plus store to your ERP, CRM, warehouse management system, fulfilment provider, and marketing tools — so inventory, orders, customer data, and analytics flow automatically.
AI-Powered Commerce
We build AI capabilities directly into ecommerce products — product recommendation engines, visual search, automated merchandising, and demand forecasting. Practical AI that increases conversion.
CRO & Performance Optimisation
After launch, we improve what's already live — Core Web Vitals, checkout conversion rate, page speed, A/B testing, and UX improvements based on real user data. Every percentage point goes directly to revenue.
Start your project with us
Obsessed with delivery. Every project, every time.
Key benefits
What changes when your ecommerce is built properly
Higher conversion, more revenue
A well-built store with a fast, frictionless checkout and a mobile-first experience converts more of the traffic you already have. Every technical improvement has a direct revenue impact.
A platform that grows with you
Shopify Plus scales from your first thousand orders to your first million. The architecture we build supports your growth roadmap — new markets, new channels, B2B, subscriptions — without requiring a rebuild.
Operations that run themselves
Integrated systems mean orders, inventory, fulfilment, and customer data flow automatically. Your team manages exceptions, not the daily manual work that integration eliminates.
AI built in from the start
Product recommendations, visual search, and demand forecasting built into your store from day one — not added on later. AI that makes your store smarter and your customers' experience better.
The process
How we build your ecommerce store
A structured process that takes you from strategy and platform decision to a live, converting store — on time and with no surprises.
1. Discovery & Strategy
We audit your current store (if applicable), define your ecommerce requirements, and recommend the right platform and architecture. For migrations, we map the full legacy system and plan the transition.
2. Design
We design the storefront experience — homepage, collection pages, product detail pages, cart, and checkout — optimised for conversion and brand alignment. You approve designs before development starts.
3. Development
We build on Shopify Plus — custom theme development, Checkout Extensibility, Shopify Functions for custom logic, and any custom apps or integrations required. All code is reviewed, tested, and version-controlled.
4. Integration
We connect your store to your backend systems — ERP, CRM, 3PL, marketing tools — via Shopify's API and purpose-built middleware. Every integration is tested under realistic load before go-live.
5. Testing & QA
Full functional testing across devices and browsers, performance testing against Core Web Vitals targets, checkout flow testing across payment methods, and end-to-end order flow validation before launch day.
6. Launch & Optimisation
We manage the launch, monitor the first days live, and address any post-launch issues immediately. After stabilisation, we move into ongoing CRO and optimisation — because launch is the beginning, not the end.
Certifications & Recognitions
Our work
Ecommerce we've built and grown
Verstolo
We built Verstolo's ecommerce platform end-to-end — a premium fine jewelry store designed for conversion, built on Shopify Plus, with a bespoke storefront experience that matches the quality of the product.
Dish by Metro
We delivered the Dish Pay ecommerce and payment platform for DISH by Metro — a custom digital commerce solution supporting thousands of restaurant transactions across the US.
Dine Market
We built Dine Market from scratch — a B2B ecommerce marketplace connecting restaurants and food suppliers across NY/NJ/CT, with custom ordering workflows, pricing tiers, and supplier management.
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
Why Mejix
Frequently asked questions
Everything you need to know about our Ecommerce Development service.
How can we help?
Whether you're launching your first Shopify Plus store, migrating from a legacy platform, or scaling an existing store that's hitting its limits — our team is ready to deliver.