Top Shopify Plus Partners & Shopify Plus Developers for Seamless Migrations and Ongoing Growth

For enterprise brands considering a move to Shopify Plus, selecting the right partner is the most critical factor in achieving a seamless migration and setting the stage for long-term growth. The ideal agency does more than just transfer data; it transforms your entire ecommerce foundation. This guide highlights the experts who can turn a complex migration into your most significant growth opportunity.

Why Specialized Expertise Matters for Shopify Plus Migrations

Migrating an enterprise-level online store is a high-stakes endeavor. The process involves meticulous planning to preserve SEO rankings, transfer complex data accurately, and ensure zero downtime. Top Shopify Plus partners bring a structured methodology that mitigates risk and leverages the platform’s advanced features from day one.

The goal is not just to change platforms but to emerge with a more powerful, scalable foundation for business expansion. This requires Shopify Plus developers who understand both the technical architecture and the strategic business outcomes you need to achieve.

Case Study: How Netalico Engineered a 21% Revenue Lift for Audio Advice

The migration of Audio Advice from Magento to Shopify Plus exemplifies the transformative impact of working with a skilled partner. The high-end audio retailer faced challenges with slow load times and a rigid platform that hindered its marketing team’s agility.

Netalico approached the project with a focus on performance and control. They meticulously migrated content from both Magento and WordPress without disrupting operations or losing data. The technical execution was paired with custom features designed for a high-consideration sales process, including custom product listing pages with advanced filtering, enhanced search functionality, and redesigned product detail pages with clear inventory information.

Post-migration, Audio Advice saw immediate and substantial improvements across all key metrics. The company achieved a 21% increase in overall revenue, a 28% increase in total orders, and a remarkable 47% lift in conversion rate. Furthermore, the site achieved perfect Core Web Vitals compliance, dramatically improving site speed and user experience.

A Curated List of Leading Shopify Plus Partners and Shopify Plus Developers

1. Netalico: The Migration and Ongoing Optimization Specialist

Netalico stands out for its focused expertise in seamless platform migrations and a unique fractional ecommerce team model. They are particularly skilled at guiding brands through complex transitions from Magento, BigCommerce, and Wix to Shopify Plus, with a proven methodology that safeguards SEO and ensures data integrity. Beyond migration, they excel in ongoing, retainer-based support, acting as a continuous optimization partner. A testament to their success is their work with Audio Advice, where a migration from Magento resulted in a 21% increase in overall revenue and a 47% lift in conversion rate. Netalico is an ideal partner for mid-market to enterprise brands that view ecommerce as a long-term strategic channel and want to avoid the revolving door of project-based agencies.

2. Diff (VML): The Enterprise Replatforming Expert

Now part of the global VML network, Diff is a powerhouse for large-scale, complex Shopify Plus projects. They specialize in enterprise replatforming, headless commerce builds, and intricate multi-system integrations involving ERPs and OMS. Their approach is ideal for large brands with sophisticated backend requirements and those executing multi-region or multi-brand strategies. With their extensive resources and deep technical expertise, they are a go-to partner for Fortune 500 companies and established enterprises looking for a safe pair of hands on high-stakes projects.

3. We Make Websites: The International Expansion Leader

We Make Websites is highly regarded for its strategic approach to brand-led design and complex international rollouts. With bases in London and New York, they have a strong track record of helping premium and lifestyle brands scale globally on Shopify Plus. They are known for being a “safe pair of hands,” delivering meticulously planned and executed projects for clients like Pangaia, Hasbro, and David Beckham’s eyewear brand. If your goal is to expand into new markets with a sophisticated, high-performing storefront, they are a top contender.

4. Eastside Co: The End-to-End Plus Veteran

As one of the UK’s longest-serving Shopify Plus agencies, Eastside Co offers comprehensive end-to-end services. Their veteran status means they have deep institutional knowledge of the platform’s evolution. They are skilled in full-store redesigns, migrations, and ongoing conversion rate optimization. Serving a diverse clientele from startups to established enterprises, they are a reliable choice for brands seeking a full-service digital agency with a strong focus on the UK and EMEA markets.

5. Barrel: The Design-Led Growth Partner

Barrel is a New York-based agency known for its exceptional design sensibility and strong brand-building capabilities. They marry visual aesthetics with strategic growth thinking, creating beautiful and highly functional ecommerce experiences. Their portfolio includes heavyweight brands like Black+Decker as well as disruptive DTC companies. Barrel is an excellent fit for brands that prioritize premium, design-forward storefronts and want a partner that can deliver on both creative vision and commercial results.

What to Look for in a Migration Partner

Beyond the service model, ensure any partner you consider offers specific capabilities essential for success:

Proven Migration Methodology
The best partners follow a clear, phased process covering planning, design, development, quality assurance, and launch. This structured approach ensures no detail is overlooked, from data mapping to redirect strategy.

Technical Expertise in Complex Integrations
Look for demonstrated experience with complex integrations including ERPs, CRMs, and other business systems. True experts in Shopify Plus development can handle custom functionality that meets your unique business requirements.

Post-Launch Support Structure
A successful migration is just the beginning. The right partner will offer formal ongoing support and optimization services to ensure your store continues to perform and grow. This includes performance monitoring, security updates, and strategic improvements.

The Strategic Value of Ongoing Optimization

The most successful migrations are those that view the launch as a starting point rather than an endpoint. Ongoing optimization through a retainer model allows for continuous improvement based on real user data and changing market conditions.

This approach transforms your agency relationship from a project-based vendor to a strategic growth partner. Regular optimization cycles can address everything from conversion rate improvements to new feature development, ensuring your store evolves alongside your business.

To explore how a specialized agency can facilitate your move, learn more about the services offered by dedicated Shopify Plus developers.

Conclusion: Building a Foundation for Long-Term Growth

A successful Shopify Plus migration is a strategic investment that pays dividends long after the new site goes live. The key is to partner with an agency that views the project not as a one-time task, but as the foundation for your future growth.

The most valuable Shopify Plus partners combine technical mastery with a deep understanding of business strategy. They ensure that the migration itself unlocks immediate performance gains while establishing a flexible, scalable platform that your team can control and optimize for years to come. By choosing a partner with a documented history of successful migrations and a commitment to ongoing support, you position your brand for sustained success in a competitive ecommerce landscape.