SHOPIFY PLUS DESIGN & DEVELOPMENT
Shopify Plus Design & Development
We build conversion-focused Shopify websites. From custom theme design and mobile-first development to fast load times and CRO, every part of the process is designed to help your store perform better and convert more visitors into customers. We continuously test and improve product pages, the checkout flow, and the overall shopping experience, using real data to identify what works and where there is room to improve.
From €5,600
Custom Shopify Plus Builds
Conversion-optimized builds from €5,600 for theme-based stores. Mid-range custom builds €20,000–€50,000.
Fast
Loading On Mobile
Every store is built to load quickly on a phone, through optimised images, clean Liquid code, lazy loading and a minimal app stack. We test it before launch and keep working on it until it is quick.
CRO
Built In From Day One
Conversion work is part of the build rather than a phase after it: benefit-first product pages, a friction-free checkout, mobile UX, and A/B testing live at launch.
Measured
Before and After
The average Shopify store converts at about 1.4%. We measure your rate before we start and again 60 to 90 days after launch, rather than promising a number.
(01) OVERVIEW
Why choose a conversion-focused Shopify Plus design and development agency?
It's nice to have a nice looking website, but that doesn't cut it in the real world. That's why we build conversion optimised Shopify stores.
There is a huge difference between a store with a 1.4% conversion rate and one with a 2.5% conversion rate. If the store makes $500K a year, that can mean roughly $390K left on the table. That's where well executed CRO can make a real difference.
With us, every project starts with a CRO audit, followed by conversion focused design, web development and, at the end, speed optimisation. Once the website is built, we actively A/B test so we can learn from your real customers' behaviour.
We focus on the areas that have the biggest impact on conversion, including product pages, mobile UX and checkout. Once the store is live, we keep testing, learning and improving based on the data.
Alongside design and development, we handle ERP and CRM integrations, payment and tax setup across markets, and custom Shopify apps when an off the shelf solution is not enough. For brands running paid ads, we can also produce the creative with the same senior team, keeping the experience consistent from the ad through to the store and checkout. This helps improve both ROAS and conversion rate.
(02) ROI CALCULATOR
CRO revenue estimator.
Model what a conversion rate lift is worth on your current traffic before you talk to us.
Inputs
Result
+€1.1M
Additional revenue per year
(03) FEATURES
What's included in every Shopify Plus design and development project
Custom Shopify Plus theme design
Pixel-perfect custom theme design matched to your brand visual system. No premium themes, no generic templates.
- //Conversion-tested benefit-first hierarchy
- //Strategic social proof placement
- //From €5,600 for theme-based builds
Built to load fast
Speed is part of the build rather than a pass at the end, because a slow store loses buyers before they see the product.
- //Optimised image pipelines and lazy loading
- //Minimal app stack, clean Liquid code
- //Tested on a phone, not just a desktop
Mobile-first ecommerce development
More than 70% of DTC traffic is mobile. We design and develop mobile-first, then enhance for desktop.
- //Touch-friendly tap targets, sticky add to cart
- //One-handed checkout flows
- //Mobile gap reduced to 20–30%
Conversion-designed product pages and checkout
Every product page uses our conversion-design methodology: benefit-first hierarchy and friction-free checkout.
- //2.4x higher conversion vs feature-first
- //Shopify Plus Checkout Extensibility
- //Upsells, cross-sells and bundles for AOV
ERP, CRM and app integrations
OPTIONALCustom integrations with NetSuite, SAP, HubSpot, Salesforce, Klaviyo, Postscript, Yotpo, LoyaltyLion, Recharge and custom APIs.
- //Bidirectional data sync
- //Automated event-triggered workflows
- //Custom Shopify apps from €8,000
Built-in ecommerce CRO and A/B testing
CRO is not an add-on. It is built into every Shopify Plus build from pixel one.
- //A/B testing infrastructure at launch
- //Strategic social proof placement
- //Conversion measured before and after launch, not assumed
SEO foundation and multi-market setup
Every store launches with proper SEO architecture and multi-market payment, shipping and tax setup.
- //Semantic HTML, meta tags, structured data
- //301 redirect strategy for migrations
- //Multi-currency, multi-language, Shopify Markets
(04) PROCESS
Our Shopify Plus design and development process
01
Discovery and conversion audit
We analyse your current store, traffic, conversion benchmarks, customer journey and competitive positioning, then map a build that addresses the highest-impact CRO opportunities. For brands migrating we audit data structure, integrations and SEO footprint. Output is a scope document with timeline, cost breakdown and expected conversion outcomes. Free with every project.
02
Conversion-focused design
Custom theme design using our conversion methodology: benefit-first product hierarchy, social proof above the fold, friction-free checkout and mobile-first UX. Every page is designed with what we have learned across more than 200 DTC brands.
03
Development and speed optimisation
Custom Liquid development built for fast loading: clean code, optimised image pipelines, lazy loading and a minimal app stack, so the store stays quick as it grows. Integrations are configured alongside it, from ERP and CRM to email and analytics, plus multi-market payment, shipping and tax.
04
Launch, A/B testing and iteration
Zero-downtime DNS cutover during low-traffic hours and 48-hour post-launch monitoring of checkout, payment, integrations and performance. A/B testing infrastructure deployed at launch. Most brands see measurable conversion improvements within 60 to 90 days.
(05) PRICING
Shopify Plus design and development pricing
Every build is scoped as a fixed-price engagement after a free conversion audit. Pricing depends on complexity, custom features and integration count. Hourly development is €75 an hour with volume discounts.
| ENGAGEMENT | INVESTMENT | TIMELINE | BEST FOR |
|---|---|---|---|
| Theme-based Shopify Plus build | €5,600–€15,000 | 2–4 weeks | Brands at $500K–$1M a year, fast launch |
| Custom Shopify Plus build | €20,000–€50,000 | 6–10 weeks | Brands at $1M–$5M a year, full custom design |
| Mid-range Plus with ERP and integrations | €40,000–€80,000 | 8–12 weeks | Brands with complex tech stacks |
| Enterprise Shopify Plus | €100,000–€150,000+ | 16–24+ weeks | Multi-storefront, B2B, complex international setups |
| Hourly Shopify Plus development | €75/hour | Ongoing | Iterations, new features, A/B test implementation |
Most DTC brands at $1M–$5M a year invest €20,000 to €50,000 in the initial build, then €500 to €2,500 a month in maintenance and CRO. A store converting at 2.5% instead of 1.4% means 78% more revenue from the same traffic. Most builds pay for themselves within two to six months.
(06) TESTIMONIALS
What DTC brands say about our Shopify Plus builds
Trusted by 200+ DTC and ecommerce brands, across 30 European markets.
““We brought Conversion Design in to optimise our Shopify Plus store and improve our conversion rate. They identified the exact drop-off points in our checkout flow and redesigned those pages using CRO-tested patterns. Measurable increases in online sales conversions followed within weeks.””
““Conversion Design rebuilt our Shopify Plus store from scratch: custom theme design, checkout flow optimisation and ERP integration all handled in-house. What impressed us most was how tightly design and development worked together. The store launched on time, comfortably clears 90 on mobile PageSpeed, and our checkout completion rate improved measurably in the first month.””
““We used Conversion Design for both a Shopify Plus store redesign and a creative retainer. Having the store design and the ad creatives handled by the same team was the biggest advantage. The landing pages were designed alongside the creatives, so the visual continuity from ad to store to checkout was seamless.””
(07) COMPARISON
Custom Shopify Plus vs premium themes vs freelancer builds
| FACTOR | PREMIUM SHOPIFY THEME | CONVERSION DESIGN | FREELANCER |
|---|---|---|---|
| Average conversion rate | 1.0–1.8% | Measured before and after | 1.0–2.0% (varies) |
| Loading speed | 40–70, theme dependent | Built and tested for speed | Varies |
| Mobile load time | 3–5 seconds | Fast on mobile | 2–5 seconds |
| Custom design | No, template based | Pixel-perfect custom | Often template based |
| CRO methodology | None | 4-step CRO process built in | Rare |
| A/B testing infrastructure | None | Deployed at launch | Rare |
| ERP and CRM integration depth | Limited | Full custom integration | Limited |
| Cross-brand insights | None | More than 200 DTC brands | Single brand |
| Project cost | $200–$400 theme plus dev | €5,600–€150,000+ | €2,000–€20,000 |
| Best for | Pre-launch validation | Brands committed to scaling | Under €15K budget |
The gap between a premium theme and a conversion-designed custom Shopify Plus build is typically worth €100K to €500K+ per year in additional revenue for DTC brands above $1M a year.
(08) START
Ready to build a conversion-optimized Shopify Plus store?
Send us your current store, or the platform you are migrating from. We identify the highest-impact CRO opportunities and scope a build tailored to your brand, and you get a clear roadmap and a fixed-price quote back within two working days.
(09) FAQ
Frequently asked questions and answers.
Frequently asked questions about Shopify Plus design and development
How much does Shopify Plus design and development cost?
A theme-based Shopify Plus build starts at €5,600. Mid-range custom builds run €20,000 to €50,000. Shopify's own Plus licence is billed separately by Shopify. Cost is driven by three things: the number of unique templates, how much custom logic sits in the checkout, and how many markets launch at once. Scope and price are fixed before work starts, so the quote does not move mid-project.
What's included in Shopify Plus design and development?
Every build covers a custom theme designed and written in clean Liquid, the full template set of home, collection, product, cart, and checkout where Plus allows it, mobile-first development, SEO architecture, multi-currency and multi-language setup, and A/B testing infrastructure live at launch. ERP, CRM and app integrations are included where they are in scope. Every store is built and tested for fast loading on mobile before it goes live, and we keep working on it after launch if it slips.
What's the difference between Shopify and Shopify Plus?
Shopify Plus is Shopify's enterprise tier. The storefront tools are the same, so a Plus store is not automatically faster or better looking than a standard Shopify one. What you pay for is the ceiling. Plus opens up the checkout through Checkout Extensibility, allows expansion stores under one contract for separate brands or markets, raises the API limits that integrations run into, and adds Shopify Flow and Launchpad for automation and scheduled campaigns. Transaction fees also drop once volume is high enough to earn it. Most brands move up when the checkout becomes the constraint, or when a second market or brand needs its own storefront. Below that point a standard Shopify build does the same conversion work for less, and we will tell you which one your case actually needs.
How long does a Shopify Plus build take?
A theme-based Shopify Plus build takes 6 to 8 weeks. Mid-range custom builds take 10 to 16 weeks. A migration from WooCommerce or Magento adds 2 to 3 weeks for data and redirect mapping. In practice the schedule is set by how quickly product data and content arrive rather than by development, which is why the first week goes on a content inventory.
Do I need a custom Shopify Plus theme or a premium theme?
A premium theme is the right call when you are validating a product and want to be live in a fortnight. Past that point it costs more than it saves. Premium themes carry code for features you will never use, and every customisation tends to arrive as another app, which is another script sitting between your customer and the buy button. We build custom themes in clean Liquid from €5,600, which is where most of the conversion work actually lands.
Can you migrate my existing store to Shopify Plus?
Yes. We migrate to Shopify Plus from WooCommerce, Magento, Odoo, BigCommerce and custom platforms, from €8,600. A migration covers products and variants, customer records, order history, and the part most migrations get wrong: URL redirects. Every old URL is mapped to its new equivalent before launch so existing search rankings survive the move, and Search Console is monitored after go-live to catch anything that slipped through.
What conversion rate can I expect from a conversion-designed Shopify Plus store?
We do not promise a conversion rate, because it depends on your traffic, price point and category. What we do is measure it. The average Shopify store converts at about 1.4%. We record your rate before the build starts and again 60 to 90 days after launch, against a comparable traffic mix, so the difference can be attributed to the store rather than to a good month. Every build ships with A/B testing infrastructure, so the measuring carries on after launch.
Do you handle Shopify Plus apps and integrations?
Yes. We integrate Shopify Plus with NetSuite, SAP, HubSpot, Salesforce, Klaviyo, Postscript, Yotpo, LoyaltyLion, Recharge and custom APIs, with bidirectional data sync and event-triggered workflows. Where nothing off the shelf fits, we build a custom Shopify app from €8,000. We also audit what is already installed: every app you keep is another script loading ahead of the buy button, so part of the work is removing the ones that stopped earning their place.
(10) RELATED SERVICES
Services that pair with a Shopify Plus build
Platform Migrations
Migrate from WooCommerce, Magento or BigCommerce to a conversion-designed Shopify Plus store. From €8,600 with full data migration and SEO preservation.
Learn more →Ecommerce CRO
Our 4-step CRO process for Shopify stores, built into every Shopify Plus build from day one rather than added as an afterthought.
Learn more →White label Shopify development
The same builds delivered under an agency's name, at trade prices, quoted in two working days.
Learn more →