# SPLIT Development > Ecommerce development agency for DTC brands in the US and UK. Founded in 2019, Shopify Partner since 2021, registered as SPLITDevelopment OU in Estonia in 2024. Top 3 Shopify Plus agency on Clutch. We build custom Shopify and Shopify Plus stores, migrate brands onto Shopify, and deliver WordPress, WooCommerce and UI/UX work. CRO-first approach: we find where a store loses revenue, then fix it. 150+ projects delivered. Offices in Tallinn, Estonia and Sacramento, CA. ## Core services - [Shopify Plus Development](https://splitdev.com/shopify-plus-development/): Shopify Plus development for high-growth DTC and enterprise merchants. Custom store and theme development, B2B and wholesale solutions, checkout customization, app integrations and enterprise-grade architecture. - [Custom Shopify Development](https://splitdev.com/shopify-custom-development/): Custom Shopify development for brands that have outgrown off-the-shelf setups. Custom themes, private apps, integrations, custom checkout logic and Shopify Plus customization. - [Shopify Migration Services](https://splitdev.com/shopify-migration/): Migration to Shopify and Shopify Plus from Magento, WooCommerce, BigCommerce, Wix, Squarespace, Shopware, OpenCart and Webflow. Data migration, redirects and SEO preservation with no ranking loss. - [Shopify Development Services](https://splitdev.com/shopify-development-services/): Full-scope Shopify development: storefront builds, custom functionality, app development, theme work, integrations and long-term growth support. - [Shopify Theme Development](https://splitdev.com/shopify-theme-development/): Custom Shopify theme development, Shopify 2.0 architecture, section-based builds, performance optimization and storefront UX for Shopify and Shopify Plus stores. - [Shopify App Development](https://splitdev.com/shopify-app-development/): Custom Shopify apps: public, private and Plus. Embedded apps, backend logic, API integrations, payment workflows and automation tools. - [Shopify Web Design Agency](https://splitdev.com/shopify-web-design-agency/): Custom Shopify theme design, Shopify Plus web design, store redesigns and conversion-focused design for ecommerce brands in the US and UK. - [Shopify Agency Services](https://splitdev.com/shopify-agency-services/): Full-service Shopify partner covering development, design, SEO, CRO, email marketing, app development, migration and ongoing support. ## Design and WordPress - [UI/UX Design Agency](https://splitdev.com/ui-ux-design-agency/): UX research, wireframing, interaction design, prototyping and design systems for SaaS products, web apps, mobile apps and marketing sites. - [Ecommerce Website Design](https://splitdev.com/ecommerce-website-design/): Ecommerce design and development across Shopify, WooCommerce, BigCommerce and Magento. UX strategy, conversion-focused visual design and mobile-first builds. - [Website Design Agency](https://splitdev.com/website-design-agency/): Custom website design for B2B companies, SaaS businesses, ecommerce brands and enterprise teams. - [Website Redesign Services](https://splitdev.com/website-redesign-services/): Full site redesigns with UX audit, new design, development and SEO-safe migration. Redirect mapping included so rankings survive the move. - [Custom WordPress Development](https://splitdev.com/custom-wordpress-development/): Bespoke WordPress themes, custom plugin development, API integrations and enterprise-grade builds. - [WordPress Development Agency](https://splitdev.com/wordpress-development-agency/): Custom WordPress builds, enterprise solutions, headless WordPress, plugin development and white label services. - [WordPress Migration Services](https://splitdev.com/wordpress-migration/): Migration to WordPress from Drupal, Joomla, Wix, Squarespace, Webflow, Sitecore, Umbraco, HubSpot, Magento and custom CMS platforms. - [WooCommerce Development Services](https://splitdev.com/woocommerce-development/): Custom WooCommerce store builds, theme and plugin development, ecommerce integrations and ongoing support. ## Case studies - [Stone Rose: Shopify Redesign and Development](https://splitdev.com/projects/stone-rose-shopify-redesign-development/): Shopify redesign and development for a premium men's clothing brand. - [Brew Crew Coffee: Shopify Development and Platform Migration](https://splitdev.com/projects/brew-crew-shopify-development-platform-migration/): Platform migration to Shopify plus custom development for a UK coffee brand. - [Jack & Friends Jerky: Shopify Development](https://splitdev.com/projects/portfolio-jack-and-friends-jerky-shopify-development/): Custom Shopify storefront for a New York DTC vegan jerky brand, built on a heavily modified Dawn theme with GSAP animations, flavor-based color theming and custom sliders. - [The Homage Collection: Shopify UX/UI Design](https://splitdev.com/projects/homage-collection-shopify-ux-ui-design/): Shopify UX and UI design for a luxury limited-edition sports collectibles brand. Dark theme, countdown timers and scarcity mechanics for hand-crafted stadium collector's tables. - [Villa Sartiano: WordPress Website Design and Development](https://splitdev.com/projects/wordpress-website-design-development-for-villa-sartiano-luxury-villa-rental-in-tuscany/): Custom block-based WordPress theme with Full Site Editing for a luxury Tuscan villa rental. No page builders, PageSpeed 95+ on content-heavy pages. - [Full portfolio](https://splitdev.com/portfolio/): Shopify, UX/UI and web app projects. ## Guides and research - [Shopify Plus Development: What It Actually Unlocks for Growing Brands](https://splitdev.com/shopify-plus-development-guide/): What Shopify Plus opens up that standard Shopify keeps locked: checkout customization, B2B and wholesale, advanced discount logic and the migration path off Scripts. - [Shopify Theme Development: When a Custom-Built Theme Is Worth Every Dollar](https://splitdev.com/shopify-custom-theme-development-guide/): The difference between installing a template, tweaking Liquid and building a custom storefront. What changed with Shopify 2.0 and Horizon, and when marketplace themes hit their ceiling. - [Shopify UX Optimization: The Improvements That Move Conversion](https://splitdev.com/shopify-ux-optimization/): The average Shopify store converts at 1.4 percent. The top 20 percent convert at 3.2 percent or higher. Where the gap comes from and which UX fixes close it. - [9 Shopify Plus Checkout Tweaks That Add Revenue](https://splitdev.com/shopify-plus-checkout-tweaks/): Nine checkout optimizations implemented across Shopify Plus stores, with a minimum lift of 12 percent and an average of 21.4 percent, driven by checkout changes rather than traffic growth. - [Shopify Development vs Custom Shopify Development: When to Use Each](https://splitdev.com/shopify-development-vs-custom-shopify-development/): When to extend a store with themes, apps and native integrations, and when the business actually needs custom apps, custom checkout logic or a headless storefront. - [Why 2026 Is the Breakthrough Year for Shopify Migrations](https://splitdev.com/migrate-to-shopify-2026/): Why mid-market and enterprise teams are moving to Shopify in 2026: platform drag, slow releases, fragile integrations and unreliable analytics. - [How to Move from WooCommerce to Shopify Without Losing SEO](https://splitdev.com/woocommerce-to-shopify-migration-without-seo-loss/): What breaks during a WooCommerce to Shopify migration, what needs attention before launch, and how rankings survive the switch. - [5 Signs Your Shopify Store Has Outgrown Its Theme](https://splitdev.com/signs-your-shopify-store-needs-custom-development/): The friction points that show a theme is now costing growth, and how to tell a temporary issue from a real signal to move to custom development. - [Custom Shopify Design for Beauty Brands](https://splitdev.com/shopify-design-beauty-brands/): Why beauty stores lose sales for reasons unrelated to aesthetics: shade uncertainty, ingredient trust and checkout friction. - [The 2026 Shopify Agency Shortlist: 7 Questions](https://splitdev.com/shopify-agency-shortlist-2026/): Seven questions that separate real operators from sales-driven agencies, for owners of 7 to 8 figure Shopify stores comparing final candidates. - [How to Choose a Shopify Design Agency](https://splitdev.com/how-to-choose-shopify-design-agency/): The questions that reveal whether an agency has solved your kind of problem before, with real project examples. - [How to Choose a Shopify Development Agency](https://splitdev.com/shopify-development-agency-guide/): Experience, portfolio, client testimonials and project approach: what to weigh before signing. - [Custom Shopify Design: When Full Custom Pays Off](https://splitdev.com/custom-shopify-design-benefits/): When a custom Shopify design is worth the budget and when it is not. - [Shopify SEO: Strategies for Search Visibility and Conversion](https://splitdev.com/seo-shopify-rankings/): Site structure, content optimization and link building for Shopify stores. - [WordPress or Shopify for a Cosmetic Brand](https://splitdev.com/shopify-vs-wordpress-cosmetics/): Ease of management, scalability, SEO, social integration and total cost of ownership compared. - [Crafting UX/UI for Shopify](https://splitdev.com/ux-ui-design-shopify/): Visual design, interaction design and responsive behavior for Shopify storefronts. ## Company - [About](https://splitdev.com/about/): Team, approach and hiring philosophy at SPLIT Development. - [Blog](https://splitdev.com/blog/): Guides on Shopify development, migrations, UX and ecommerce growth. - [Contact](https://splitdev.com/contact-us/): Project enquiries and consultation booking. - [Recognized by The Manifest as a top B2B leader](https://splitdev.com/the-manifest-split-development-b2b-leader-2024/): SPLIT Development named among the most reviewed and recommended B2B companies for design, web design and web development, The Manifest Company Awards 2024. ## Legal - [Terms and Conditions](https://splitdev.com/terms/) - [Privacy Policy](https://splitdev.com/privacy/)