Replatforming to Shopify Plus is rarely a simple switch. It often involves migrating large product catalogs, preserving SEO equity, integrating ERP and CRM systems, and rethinking how teams manage ecommerce at scale. For established brands, the quality of the agency leading this process can directly affect timelines, data integrity, and long-term platform stability.
This article highlights the best agencies for replatforming to Shopify Plus, teams with proven experience moving complex ecommerce operations from legacy platforms to Shopify Plus. The agencies featured here help brands manage structured migrations, work through technical and organizational dependencies, and move to new platforms.
Fyresite is a digital agency that works with brands on Shopify Plus design and development, along with broader ecommerce strategy and custom digital work. The team takes time to understand how each business operates before shaping the platform, which helps them build solutions that fit real workflows rather than forcing a standard setup. Their projects often include Shopify Plus migrations, custom themes or apps, and ongoing technical support for teams planning larger platform changes.
Instead of focusing on quick wins, the agency tends to work through core challenges step by step. This usually means refining the user experience, connecting Shopify Plus with existing systems, and setting up a foundation that can scale as the business grows. Fyresite’s approach supports gradual improvement over time, with close collaboration and clear communication throughout the project.
Services and expertise: Custom Shopify app and theme development, Shopify Plus migration, site speed optimisation, API integrations, checkout extensibility, ongoing support
Location: Phoenix, Arizona
Team size: 11-50 experts
Clients: Corbeau, Chassis Unlimited, Darts.com, State Forty Eight, Pooltables.com
Pointer Creative, also known as P3, is a digital commerce agency focused on building and evolving ecommerce experiences for established consumer brands. The agency works on complex Shopify Plus projects that often involve platform transitions, custom design systems, and ongoing optimization. Its work places a strong emphasis on performance, scalability, and long-term maintainability rather than one-off launches, which positions the team among leading Shopify Plus partners for growth-stage and enterprise brands.
The agency typically collaborates closely with in-house teams and stakeholders throughout the project lifecycle. Its engagement model is built around planned replatforming, followed by ongoing refinement after launch. P3 is usually brought in when brands need a technically strong partner that can still stay closely aligned with brand direction and day-to-day operational needs as the business grows on Shopify Plus.
Services and expertise: Shopify Plus development, ecommerce replatforming, UX/UI design, custom storefronts, systems integration, ongoing optimization
Diff is an ecommerce agency that works with established brands on complex Shopify Plus projects. The team often steps in when businesses need to rebuild or rethink their existing commerce setups and move them to Shopify Plus in a way that fits real operational needs. Instead of relying on templates, Diff focuses on custom solutions designed around how each business runs and plans to grow, which is why it’s often seen as one of the top agencies for replatforming to Shopify Plus.
The agency supports projects across design, development, and technical architecture, staying closely involved throughout the transition. Its work usually continues after launch, with ongoing improvements tied to performance, scalability, and changing business requirements. Diff has experience working with both high-volume retail brands and subscription-based businesses, where stability and flexibility matter over the long term.
Services and expertise: Shopify Plus development, ecommerce replatforming, headless and Hydrogen builds, custom integrations, UX/UI design, CRO
Absolute Web is an ecommerce agency that works with established brands on Shopify Plus projects, often supporting businesses that are moving away from legacy platforms. The team handles structured migrations and custom implementations, paying close attention to how existing data, integrations, and workflows translate to Shopify Plus. Its experience with complex store setups and performance-focused builds places it among the best agencies for replatforming to Shopify Plus for brands that need more than a basic platform switch.
The agency usually stays involved after launch, helping teams refine their storefronts as the business evolves. This ongoing work may include improving usability, adjusting features as requirements change, and supporting growth as traffic and operations scale. Rather than treating replatforming as a one-time project, Absolute Web tends to approach it as a longer-term process tied to broader ecommerce strategy and day-to-day operations.
Services and expertise: Shopify Plus migrations and development, custom storefronts, UI/UX design, system integrations, performance optimization, ecommerce strategy
Location: Miami, Florida, United States (also operates from Los Angeles)
Team size: 50–100 experts
Clients: Open Farm, Summer Fridays, Lashify, Modloft, The Elder Statesman
DigitalSuits is an ecommerce development agency focused on Shopify and Shopify Plus projects. The company works with brands on building and updating Shopify Plus stores, as well as moving existing platforms to more scalable setups. Its background in custom development and carefully planned migrations makes it a solid option for businesses that need experienced Shopify Plus specialists for complex ecommerce environments.
The team typically supports projects beyond the initial launch. This can include adjusting integrations, improving how the storefront functions, and helping the platform evolve as business needs change. The focus stays on long-term stability and growth, not short-term fixes.
Services and expertise: Shopify Plus development, Shopify migrations, custom storefronts, system integrations, UI/UX design, performance optimization, software development
Mobikasa works with brands that are dealing with more complex ecommerce needs, from building new stores to migrating existing platforms. The team develops custom Shopify Plus solutions that help businesses move away from legacy systems and improve the overall performance of their online stores. Its structured process and technical experience make the agency a fit when brands seek best Shopify Plus migration services with strategic execution.
The team blends development, design, and systems work in its projects. This allows clients to align business goals with commerce technology. Mobikasa’s work often focuses on solving technical challenges and supporting long-term growth after launch rather than quick, template-style builds.
Services and expertise: Shopify Plus migrations, custom development, UX/UI design, integrations, performance optimization, digital strategy
Codal is a digital product and ecommerce consultancy that helps brands solve complex technical challenges and build customized commerce experiences. Its work helping businesses modernize and migrate commerce setups underscores the benefits of replatforming to Shopify Plus, such as improved scalability, performance, and unified operational workflows.
The team pairs strategy with technical delivery to help clients translate business needs into digital solutions. Codal’s approach often focuses on optimizing user experience, improving backend systems integrations, and supporting long-term platform growth rather than one-off builds.
Services and expertise: Shopify Plus migrations, ecommerce strategy, UX/UI design, custom development, systems integrations, performance optimization
Location: Chicago, Illinois, United States (with additional offices)
Arctic Grey is a Shopify Plus design and development agency that works with established brands on complex ecommerce projects. The company supports platform rebuilds, redesigns, and migrations where performance, usability, and scalability matter. Its focus on custom solutions and enterprise-level requirements places it among teams considered for the best ecommerce replatforming service on Shopify Plus.
The agency combines design and engineering to support long-term platform use rather than short-term launches. Projects often involve custom themes, backend integrations, and performance improvements that help brands adapt Shopify Plus to their operational needs.
Services and expertise: Shopify Plus migrations and development, custom theme builds, UX/UI design, frontend and backend integrations, performance optimization, ecommerce strategy
Location: New York, United States
Team size: 50–99 employees
Clients: EBY by Sofia Vergara, The Cashmere Sale, BarkBox, Olaplex, Harvard University, Lids
Storm Brain is a digital agency that combines web design, ecommerce, and brand work under one roof. The team supports Shopify projects that involve rebuilding existing sites and improving how brands operate online. This broader perspective makes Storm Brain a relevant option for businesses looking to find Shopify Plus consultants who can balance technical execution with brand consistency during platform changes.
Rather than focusing on quick launches, the agency puts emphasis on custom design and a structured development process. Its projects often aim to improve usability, support scalability, and maintain a consistent digital identity over time, instead of relying on templates or short-term solutions.
Services and expertise: Shopify and ecommerce development, website design, UX/UI, branding, digital marketing, system integrations
Location: San Diego, California, United States
Team size: 50–249 experts
Clients: Unite Professional Salon Systems, House of Lashes, Ancestral Supplements, Ammunition Whiskey & Wine, iam8bit
Praella works with established and growing brands to build and improve Shopify Plus stores that support more advanced ecommerce needs. The team handles complex projects where design, strategy, and technical execution need to work together, and its background in large-scale implementations places it among leading Shopify Plus partners for brands operating at scale.
The agency usually stays involved after launch, helping clients adjust their Shopify Plus setups as priorities and requirements change. Much of its work focuses on keeping platforms scalable, fast, and easy to use, with an emphasis on long-term stability rather than short-term fixes.
Services and expertise: Shopify Plus migrations and development, UX/UI and conversion-focused design, system integrations, ecommerce strategy, app development, performance optimization
Replatforming to Shopify Plus is a strategic move that affects far more than the storefront. Data accuracy, system integrations, SEO continuity, and internal workflows all depend on how the migration is planned and executed. Working with a team that understands these dependencies reduces risk and helps brands stay focused on business operations during the transition.
If you plan to hire Shopify Plus migration experts, look for agencies with hands-on experience in complex replatforming projects, not just new builds. The right partner can guide technical decisions, manage platform trade-offs, and support a stable launch that sets the foundation for long-term growth on Shopify Plus.
If you want to feature your agency for replatforming to Shopify Plus on this list, email us or submit a form in the Top Choices section. After a thorough assessment, we’ll decide whether it’s a valuable addition.
