Structured review of theme, apps, data model, integrations, and checkout. Plain-language findings your team can share internally, plus a prioritised roadmap: foundation before features.
Our services
We audit, build & maintain Shopify stacks for established DTC brands.
- Shopify Stack Audits
- Theme Development
- Custom App Development
- Checkout Extensions
- Shopify Functions
- Shopify Migrations
- Merchant Experience
- Integrations
- Data Architecture
- Shopify Plus
- UI Extensions
- Replatforming
- Conversion Rate Optimisation



oContis Studio is a Shopify Partner agency based in London, working with established DTC brands across the UK, US, Europe, and the UAE. We partner with ambitious brands to assess, build, and maintain Shopify stacks through structured audits, foundation-first development, and a retained technical relationship.
From custom apps and checkout extensions to migrations and integrations, one team owns the architecture from first diagnosis through long-term delivery.
London Shopify Plus agency: stack audits, custom app development, theme development, checkout extensions, and long-term Shopify development partnership for established DTC brands.
Our expertise
Engineering that scales with your business
01 / 04
Foundation First
Technology
Bespoke Online Store 2.0 themes with modular sections, lean asset loading, and admin controls your merchandising team can actually use. Performance and conversion structure are decisions you make at build time, not patches you chase later.
- 03
Merchant Experience
Storefront UX, checkout flows, and admin workflows built for how your merchandising and ops teams actually work. Structural improvements in theme, checkout extensions, and apps, not overlay CRO patches.
Custom apps and private integrations when off-the-shelf tools create overlap, fragility, or margin erosion. Built on Shopify's APIs with maintainability and merchant workflow in mind.
Checkout and customer account extensions, plus Shopify Functions for pricing, delivery, and payment logic. For Shopify Plus brands that need checkout customisation without painting themselves into a corner.
End-to-end migrations from WooCommerce, Magento, BigCommerce, and custom platforms. Data mapping, URL redirects, theme rebuilds, and launch planning with minimal downtime and SEO continuity.
ERP, PIM, CRM, and fulfilment integrations wired into a coherent Shopify stack. We tidy data flow and cut app sprawl, which is the hidden tax on most stores trying to scale.
02 / 04
Built Properly
Creative
- 01
Branding and Identity
Brand identities that work on the storefront, in campaigns, and across lifecycle touchpoints. Visual systems meant to convert, not just look good in a guidelines PDF.
- 02
Data Architecture
Metafield, metaobject, and content models that keep merchandising flexible as your catalogue and campaigns grow. Having data is one thing. Your theme and admin being able to use it without a developer on speed dial is another.
- 03
Content Strategy
Editorial and product content frameworks tied to search intent, conversion paths, and brand voice. Consistent across PDPs, collections, email, and social instead of siloed by channel.
- 04
Design System
Component libraries and design tokens that keep storefront updates fast, cohesive, and on-brand. Cuts the cost of iteration as your team scales content and campaign output.
03 / 04
Informed Decisions
Strategy
- 01
Conversion Rate Optimisation
We run audits and test programmes focused on contribution margin and checkout completion. The friction that hurts most is usually buried in product discovery, merchandising, or the purchase flow, and it gets worse as traffic grows.
- 02
Brand discovery
We help you nail positioning, value proposition, and audience fit before you pour money into creative and tech. You walk away with a framework your team can actually use, not a deck that gathers dust.
- 03
Market, Customer & Competitor Analysis
Category, customer, and competitive research that feeds into merchandising, acquisition, and retention. Based on how your market actually works, not recycled playbooks from a generic ecommerce blog.
- 04
Personalisation
Segmented journeys and lifecycle personalisation that lift repeat purchase and LTV without bolting on apps you do not need. Built around your data architecture from the start.
04 / 04
Stack-Connected Growth
Marketing
- 01
Loyalty and Subscription Strategy
Retention models (subscriptions, replenishment, loyalty programmes) designed around payback period and LTV, not signup volume alone. Sustainable growth needs customers who come back profitably.
- 02
Email and SMS Marketing
Lifecycle flows and campaign architecture hooked into your Shopify data layer. Post-purchase, win-back, and replenishment sequences based on behaviour, not a batch-and-blast calendar.
- 03
Social Media Marketing
Channel strategy and creative direction aligned to product margins and acquisition efficiency. Social should feed the storefront and retention stack, not sit off on its own as a content exercise.
- 04
Personalised UX and A/B Testing
Structured experimentation on merchandising, navigation, and offer presentation. We tie tests to revenue and margin impact. A variant that lifts orders but erodes profit is not a win.
Free tools
Shopify planning calculators & assessments
- 01 UCP Catalogue Explorer Search Shopify's Global Catalog through UCP. Browse live product listings in an infinite 3D canvas. Free reference app for agentic commerce discovery.
- 02 Unit Economics Simulator Free calculator for LTV, CAC payback, churn, growth ceiling, and MRR/ARR for subscription and repeat-purchase ecommerce brands.
- 03 Shopify Migration Readiness Assessment Interactive readiness assessment for replatforming to Shopify. Score migration risk, estimate timeline, and download a personalised phase roadmap.
Shopify Services FAQs
What is Shopify Stack Recovery?
Shopify Stack Recovery is oContis Studio's methodology for established DTC brands whose Shopify setup no longer scales with the business. We diagnose your theme, apps, data model, integrations, and checkout, prioritize a foundation-first roadmap, rebuild what off-the-shelf tools cannot fix, then partner long term so your stack stays maintainable. It starts with a Shopify stack audit. See the four phases on this page or book a discovery call.
Do you work with Shopify Plus brands?
Yes. We are a Shopify Partner agency working with Shopify and Shopify Plus merchants across the UK, US, Europe, and UAE. Our technology work includes checkout UI extensions, Shopify Functions, custom apps, data architecture, and performance-focused theme builds. See our portfolio, including work with brands such as Scrumbles and Lanoguard.
Can you migrate my store to Shopify from another platform?
Yes. Replatforming is part of our rebuild phase when a strategic initiative requires it: data migration, URL redirects, theme rebuilds, integration mapping, and launch planning. We migrate stores from WooCommerce, Magento, BigCommerce, Shopware, PrestaShop, and other systems. Start with our free Shopify Migration Readiness Assessment. Platform guides: Magento, WooCommerce, and BigCommerce.
What is included in a Shopify stack audit?
A structured review of your theme architecture, app footprint, metafield and metaobject models, third-party integrations, and checkout setup. You receive plain-language findings the decision maker can share internally, plus a prioritised roadmap: foundation before features, including honest scoping on what should not be rebuilt yet. When growth has stalled, see what to do if your Shopify revenue is plateauing. For related technical context, see our articles on theme architecture, metaobjects, and app sprawl.
What is the difference between a custom Shopify theme and a premium theme?
Premium themes get you live fast, but they often pick up app dependency, performance debt, and rigid merchandising patterns as traffic and campaigns get more complex. A custom theme is built around your catalogue, integrations, and team workflows from day one. That means lower modification cost over time and fewer structural walls as you grow. The trade-off is higher upfront investment for less friction over the next 12 to 24 months.
How do I get started with oContis Studio?
Book a free 30-minute discovery call via our contact page or the schedule link on this page. We will talk through your stack, what is blocking growth, and whether Stack Recovery or a specific rebuild is the right entry point. If you are evaluating a replatform, try our free Migration Readiness Assessment.
Has Shopify become a constraint?
Start with a discovery call. We will assess whether Stack Recovery is the right entry point and outline what a scalable foundation looks like for your store.
About our Shopify services
oContis Studio is a Shopify Plus agency in London for established DTC brands. We provide Shopify stack audits, custom app development, theme development, checkout UI extensions, Shopify Functions, data architecture, and replatforming. Our Shopify Stack Recovery methodology starts with diagnosis and a foundation-first roadmap, then moves into scalable builds and a retained development partnership.
We work with Shopify and Shopify Plus merchants across the UK, US, Europe, and UAE on checkout customisation, app store sprawl, integrations, and migration from WooCommerce, Magento, and BigCommerce. Use our free Migration Readiness Assessment before booking a discovery call.
Ready to discuss your stack? Contact oContis Studio or explore our Shopify project portfolio. Browse work by industry: Fashion & Apparel, Beauty & Skincare, Auto/Moto, and Health & Wellness.









