Best Shopify and Shopify Plus Agency in the USA

Why Shopify Plus Is the Standard for Serious eCommerce Brands

Most brands start on standard Shopify. It's fast, affordable, and gets the job done. But at a certain point - usually around $1M in annual revenue - the platform's limits start costing you money.

That's where Shopify Plus changes everything.

A fully certified Shopify Plus Agency will also inform you that:
Plus is much more than simply a larger version of the Standard Plan. Plus represents an entirely different framework to support large brand requirements.

The things Shopify plus unlocks which Shopify does not:

• Checkout extensibility - Full control over checkout UI and design, additional custom fields in checkout, ability to include additional products after purchase (upsell) and use shopify functions for customized discounting. Brands using advanced checkout customization often improve AOV through upsells, bundles, and personalized checkout logic powered by Shopify Functions and custom extensions.
  
• Native b2b commerce capabilities - Customizable company profile information, customizable price lists by customer, net payment terms (e.g. Net 30/60/90) and buyer specific catalogs without using third party apps.
  
• Multi-store architecture - Ability to create up to 10 separate storefronts all managed through the same administrative interface. Each store can be localized with respect to languages, currencies and regional pricing.
  
• Shopify flow and launchpad - More complex automation tools for managing inventory, orders, flash sales and campaigns.
  
• 10,000+ checkouts per minute - load-tested infrastructure that doesn't buckle during product drops or peak seasons
  
• Headless & composable commerce - decouple your frontend for maximum speed and creative freedom
  
• Higher API rate limits - critical for ERP, CRM, and 3PL integrations that break under standard limits
  

Who actually needs Shopify Plus?

• DTC brands doing $1M+ GMV who need checkout customization and automation
  
• B2B and wholesale businesses requiring tiered pricing, net terms, and buyer portals
  
• Enterprise brands managing multi-store, multi-currency, or multi-region operations
  
• Brands migrating from Magento, WooCommerce, or BigCommerce who need a scalable destination
  

Working with a dedicated Shopify ecommerce agency that specializes in Plus means you're not figuring this out as you go. You're building on a foundation that's already been proven across hundreds of high-growth stores.

What Makes a Great Shopify Plus Agency?

Not every agency that claims Shopify expertise is equipped for Plus-level work. The gap between a generalist and a specialist shows up fast - usually six months after launch, when order volume grows and the shortcuts surface.

Here's what actually separates the best Shopify Plus agencies from the rest.

Certified Shopify Plus Partner Status

This is non-negotiable. A certified Shopify Plus agency has been vetted by Shopify directly - not just registered in the partner directory. Certification means the agency has demonstrated enterprise-level delivery, passed Shopify's quality standards, and has access to Plus-exclusive resources, APIs, and support channels.

There are roughly 255 Plus-tier partners in the US as of 2026. That's a small pool. Check the official Shopify Partner Directory before you shortlist anyone.

Deep Custom Development (Not Just Apps)

Any agency can install apps. The best ones write custom code when apps hit their limits - and on Shopify Plus, they always do eventually.

The main areas to find meaningful separation from other shops are through developing custom functions on your shopify site (Checkout UI extensions, Private Apps, etc.), or creating bespoke API integration(s). If a firm cannot provide examples of logic that has been developed specifically for your needs, then they are in fact merely configuring applications rather than being a Shopify plus developer firm.

Full-Service: Strategy, Design, Build, and Growth

The role of a comprehensive Shopify agency is to provide a complete service through all phases of the project including discovery, UX strategy, design, development, integration, launch, and optimization post-launch. The problem with fragmented teams is that they create disjointed processes and delays.

The best agencies own the outcome end-to-end.

Proven Track Record with Real Case Studies

Ask for case studies in your vertical. Not generic "we increased conversions" claims - specific projects, named clients (where possible), and measurable outcomes. Revenue growth, page speed improvements, migration timelines, B2B portal deployments. Numbers, not narratives.

Post-Launch Support and Maintenance

Launch day is the beginning, not the finish line. Before going live, every enterprise store should complete a structured pre-launch QA process. Use our Shopify launch checklist to validate payments, shipping, legal pages, and checkout flows. Your agency should have a defined support model - SLAs, retainer options, dedicated contacts - so your store keeps performing after go-live. Agencies that disappear after launch are a liability at scale.

The 10 Best Shopify Plus Agencies in the USA

1. Webcontrive - Best Overall Shopify Plus Agency in the USA

Certified Shopify Plus Partner | 13+ Years | 1,500+ Brands Built

Webcontrive is the most experienced shopify plus development agency on this list by volume and tenure. Founded over 13 years ago, the team has delivered for 1,500+ brands across fashion, food & beverage, lifestyle, beauty, and B2B - making it the strongest all-around choice for brands that need a single agency to own the full project lifecycle.

What Webcontrive builds:

Shopify Plus store development. Every build starts with a discovery phase covering your business model, tech stack, integration requirements, and growth roadmap. Custom Shopify Functions, Checkout Extensibility, and advanced storefront logic are standard - not add-ons.

Custom theme design and development. Pixel-perfect, performance-optimized themes built from scratch. Mobile-first, accessibility-compliant, and tested across devices before launch. Not a $350 theme everyone else is running.

Shopify app development and integrations. When the App Store doesn't have what you need, Webcontrive builds it. Custom public and private apps, plus documented integrations with ERPs (NetSuite, SAP), CRMs (Salesforce, HubSpot), PIMs, 3PLs, and loyalty platforms.

B2B commerce. As a dedicated Shopify Plus agency for B2B, Webcontrive creates native wholesale portals featuring business profiles, region-based pricing, customized catalogs, payment methods such as Net 30/60/90, support for PO numbers, and automation via Shopify Flow order approval process. Manufacturers, wholesalers, and direct-to-consumer brands expanding their business into wholesale can utilize our service.

Migration. Being a professional Shopify Plus migration agency, Webcontrive offers a full range of services including data migration of products, customers, orders, URL mapping and 301 redirection to preserve SEO equity, system integration architecture and performance testing before launch.  Platforms migrated from include Magento, WooCommerce, BigCommerce, Salesforce Commerce Cloud, and customized systems. Preserving SEO during migration is critical, especially for stores with established organic traffic. Our Shopify Plus migration guide explains how to handle redirects, data transfer, and launch without losing rankings.

Headless commerce. For brands needing maximum frontend flexibility, Webcontrive builds headless Shopify Plus architectures using Hydrogen or custom stacks. They'll also tell you honestly if headless isn't the right move for your use case.

Why Webcontrive?

• Certified Shopify Plus Partner - officially vetted by Shopify
  
• 13+ years of Shopify development experience, longer than most agencies on this list
  
• 1,500+ brands built across fashion, food, lifestyle, beauty, and B2B
  
• Full in-house capability: strategy, design, development, custom apps, integrations, and post-launch support
  
• US-focused project management with a global delivery model
  

As a shopify development agency usa with this depth of experience, Webcontrive is the default choice for brands that need a certified, full-service partner - not a team that's figuring out Plus on your project.

2. GetDevDone™

GetDevDone™ is the engineering partner for digital agencies. Since 2005, GetDevDone has
delivered projects for 15,150+ agencies worldwide across website development, front-end
development, eCommerce development, digital design, and AI engineering.
As a white-label delivery backbone, the agency helps digital teams handle complex technical workloads and scale production without taking on extra management overhead.
What GetDevDone builds:

• Shopify and Shopify Plus development. Custom theme builds, Checkout Extensibility
  setup, headless commerce architectures, and platform migrations from legacy systems. Designed to deliver fast, mobile-first, performance-optimised stores that hold up under high order volume.
• Website and front-end development. Pixel-perfect design-to-code conversions
  producing fast, accessible, and extensible front-ends across custom CMS solutions,
  landing pages, and web apps.
• Custom eCommerce integrations. White-label eCommerce engineering with stable
  API integrations for ERPs, CRMs, 3PLs, and payment gateways, backed by built-in
  analytics to support long-term growth decisions.
• AI engineering. Prototype-to-production AI delivery, embedded AI features for web apps and eCommerce platforms, and AI-generated code rescue—all seamlessly integrated into existing agency workflows.
• Digital design services. Launch-ready UI/UX, design systems, research, and campaign assets delivered with clear guidelines and clean developer handoffs.

Why GetDevDone?

• Backed by 400+ in-house engineers and zero freelancers
  
• Direct integration into agency processes and tools with 100% white-label execution
  
• 21+ years of process maturity with a 95% client return rate
  
• Multi-platform versatility spanning web, custom eCommerce, and embedded AI solutions

Best for: Digital agencies, marketing teams, and web development shops looking for a reliable white-label partner to execute custom Shopify, CMS, and AI projects on time and under their own brand.

3. Eastside Co

Location: Birmingham, UK | Shopify Platinum Partner

Eastside Co focuses on conversion rate optimization and data-driven iterative improvements for brands already on Shopify Plus. Their CRO programs use heatmapping, behavioral analytics, and rigorous A/B testing to improve bounce rates, average order values, and customer retention without requiring a full redesign.

Documented results include a 52% increase in conversions for Archer Roose in 60 days and a £116 return per £1 spent on ads for Tropic Skincare. They work best with stores generating 50,000+ sessions per month, where testing data is statistically meaningful.

Best for: Brands with an existing Shopify Plus store that want to scale revenue per visitor through ongoing CRO, not another rebuild.

4. We Make Websites

Location: London, UK | Founded 2008

We Make Websites are the headless commerce specialists on this list. They decouple Shopify's frontend using React, Vue, and Next.js to achieve lightning-fast load times and flexible buyer workflows that standard themes can't match. Their B2B wholesale portal builds include multi-cart logic, custom user permissions, quote-to-order flows, and real-time inventory API integrations.

They're a strong choice for enterprise brands that have outgrown standard Shopify Plus themes and need a composable architecture built for scale.

Best for: Enterprise brands needing headless or composable Shopify Plus architecture, and B2B brands requiring sophisticated wholesale portals.

5. Atwix

Location: US and EU | Founded 2006

Atwix is the go-to shopify plus agency for manufacturers and distributors with deep ERP dependency. Their proprietary Sirius integration platform includes pre-built, tested connectors for NetSuite, SAP, Microsoft Dynamics, Infor, Epicor, Salesforce, and more - cutting integration timelines that would otherwise take months and cost six figures.

They manage complex B2B catalog structures, tiered pricing, multi-account permissions, and automated workflow scenarios. Their 96% client retention rate reflects the operational depth they bring to enterprise engagements.

Best for: Manufacturers and distributors with complex ERP/CRM integration requirements and large-scale B2B operations.

6. Digital Silk

Location: USA | Founded 2013

Digital Silk leads with brand strategy before writing a line of code. Their Shopify Plus builds are visually premium, with strong UX/UI design and backend systems built to match. They're particularly well-suited to B2B organizations in fashion, luxury, and lifestyle sectors where product presentation and brand narrative need to convert institutional buyers.

Case studies highlight direct impact on lead generation, revenue growth, and global expansion for multi-channel brands.

Best for: Brands that want a design-led Shopify Plus build where brand positioning drives the architecture decisions.

7. Swanky Agency

Location: UK with North America focus | Certified Shopify Plus Partner

Swanky specializes in DTC and B2B Shopify Plus with a particular strength in subscription commerce, loyalty programs, and retention strategy. They're a data-driven agency - their builds are designed around measurable growth outcomes, not just launch-day deliverables.

They serve brands scaling in North America and the UK, with a collaborative approach that keeps client goals tightly tied to technical execution.

Best for: DTC brands scaling in North America that want subscription commerce, loyalty integration, and retention-focused development alongside their Shopify Plus build.

8. Codingkart

Location: New York, USA | Building on Shopify since 2013

Codingkart has 500+ projects under its belt, with a core focus on custom Shopify Plus development for growth-stage DTC and subscription brands. They build checkout customization with Checkout UI Extensions, custom pricing and discount logic with Shopify Functions, and CRM/ERP integrations with Klaviyo, NetSuite, and HubSpot.

Their deepest expertise is in subscription brands - one of their earliest builds, Driftaway Coffee, has been live for over eight years and serves 4,000+ active subscribers today.

Best for: Growth-stage DTC and subscription brands that need custom Plus functionality beyond what themes and apps can deliver.

9. Coalition Technologies

Location: Los Angeles, CA | Shopify Plus Partner + Google Premier Partner

Coalition Technologies is the only agency on this list holding both Shopify Plus Partner and Google Premier Partner certifications. Their differentiator is baking technical SEO directly into the development process - site architecture, page speed, URL structures, and schema markup are built right the first time, not retrofitted after launch. If SEO is a major acquisition channel for your brand, follow our Shopify SEO checklist to ensure your store is optimized for crawling, indexing, and rankings from day one.

They've delivered over $500 million in revenue for clients across 1,500+ documented case studies, with a 4.8-star average across 1,500+ reviews.

Best for: Brands where organic search is a primary acquisition channel and SEO needs to be embedded in the build, not bolted on.

10. Lounge Lizard

Location: USA | Certified Shopify Plus Partner

Lounge Lizard is a creative-first agency known for award-winning design and immersive UX on Shopify Plus. Their builds prioritize brand storytelling and visual experience - the kind of storefront where the design itself drives purchase intent.

They offer custom development, branding, integrations, and ongoing optimization, with a client focus on lifestyle and luxury brands where the first impression is the conversion.

Best for: Lifestyle and luxury brands where a distinctive, immersive brand experience is the primary purchase driver.

How to Choose the Right Shopify Plus Agency in the USA

When you compare shopify plus agencies, the differences aren't always obvious from a website. Here's the process that actually works.

Check Shopify Plus Partner Certification

Start here. Verify status in the official Shopify Partner Directory. A shopify plus agency in the usa that can't show certified Plus-tier status is a risk at the enterprise level. There are thousands of general Shopify Partners - there are roughly 255 Plus-tier partners in the US.

Review Case Studies in Your Vertical

Generic case studies are easy to produce. Ask for projects in your vertical, at your revenue range, with your type of complexity. If they can't show relevant work, they're learning on your budget.

Evaluate Custom Development Depth

Ask directly: "What do you build custom, and what do you solve with apps?" The answer tells you everything. A strong shopify agency usa partner has a clear philosophy - and examples of both custom code and app configuration.

Assess Post-Launch Support Models

How is the project managed? Who's your primary contact? What's the SLA for post-launch support? What happens when something breaks at 2am on Black Friday? These aren't hypotheticals. Get real answers before you sign.

Define KPIs Before You Sign

Conversion rate, page speed, AOV, migration timeline, B2B portal adoption - define the metrics before the contract is signed. The best Shopify Plus agencies will push you to do this. Agencies that avoid it are avoiding accountability.

When to Migrate to Shopify Plus (And Who to Call)

Most brands don't migrate too early. They migrate too late - after they've already lost revenue to platform limitations.

These are the signals that it's time:

• Revenue threshold - You're consistently doing $1M+ annually and transaction fees on standard Shopify are eating into margins
  
• Checkout limitations - You need custom logic, post-purchase flows, or branded checkout experiences that standard Shopify won't allow
  
• B2B requirements - You're adding a wholesale channel and need native buyer portals, net terms, and tiered pricing
  
• Multi-store needs - You're expanding internationally or running multiple brands and need centralised management
  
• Integration failures - Your ERP, CRM, or 3PL integrations are hitting API rate limits or breaking under order volume
  
• Automation gaps - Manual processes (order routing, discount logic, campaign scheduling) are slowing your team down
  

When those signals appear, you need a Shopify Plus migration agency that's done this before - not one that's figuring it out on your project.

Webcontrive has managed migrations from Magento, WooCommerce, BigCommerce, Salesforce Commerce Cloud, and custom-built platforms. We protect your SEO, preserve your data, and improve your store in the process. The migration is the opportunity - we treat it that way.

Conclusion

Choosing the best Shopify Plus agency in the USA is about more than just development. It’s about finding a partner that understands how to build scalable, high-performance ecommerce experiences that support long-term growth. Shopify Plus gives enterprise brands the flexibility, automation, and infrastructure needed to scale efficiently, but getting the most out of it requires the right expertise. With 13+ years of Shopify experience and 1,500+ successful store builds, Webcontrive helps brands launch, migrate, and grow with confidence. If you're ready to scale your ecommerce business with Shopify Plus, our team is here to help.

FAQ

What does a Shopify Plus agency do?

A Shopify Plus agency designs, builds, and scales enterprise-level stores on Shopify Plus. The work typically includes custom storefront development, checkout customization using Shopify Functions and Checkout Extensibility, ERP/CRM/3PL integrations, B2B commerce setup, platform migrations, and ongoing performance optimization. The best agencies also handle strategy, UX design, and post-launch support - not just the technical build.

How much does a Shopify Plus agency cost in the USA?

It depends on scope. A full Shopify Plus store build from an established agency typically runs between $25,000 and $150,000, with complex, integration-heavy projects landing in the $40,000–$120,000 range. Hourly rates for Shopify Plus specialists generally run $100–$250/hour. Ongoing retainers for support and optimization are separate. The right way to get an accurate number: brief two or three agencies on the same requirements and compare scoped proposals.

What is the difference between a Shopify Partner and a Shopify Plus Partner?

A Shopify Partner is any agency or developer registered in Shopify's general partner program - there are thousands of them. A Shopify Plus Partner is a smaller, vetted group specifically approved for enterprise-level work on the Plus platform. As of 2026, Shopify's partner tiers include Registered, Select, Plus, Premier, and Platinum - with roughly 255 Plus-tier and 45 Premier-tier partners in the US. For a Plus build, you want Plus-tier status or above, not just a general partner registration.

How long does a Shopify Plus store build take?

A standard Shopify Plus store build takes 8–16 weeks from kickoff to launch. Complex projects with custom app development, ERP integrations, or headless architecture can run 20–30 weeks. Migration projects vary by data volume and platform complexity. The timeline is driven by scope - a well-defined project brief at the start is the single biggest factor in keeping delivery on schedule.

Which Shopify Plus agency is best for B2B commerce?

Webcontrive is the strongest choice for native B2B on Shopify Plus: company profiles, buyer-specific catalogs, custom price lists, net payment terms, PO number support, and Shopify Flow automation for approval workflows. Atwix is the best option for manufacturers and distributors with complex ERP integration requirements. We Make Websites leads for headless B2B wholesale portals.

Is Webcontrive a certified Shopify Plus Partner?

Yes. Webcontrive is a Certified Shopify Plus Partner - officially vetted by Shopify, not self-declared. With 13+ years of Shopify development experience and 1,500+ brands delivered across fashion, food, lifestyle, beauty, and B2B, Webcontrive is one of the most experienced Shopify Plus agencies operating in the US market.

Useful Sources

• Shopify Plus - Official Platform Page
  
• Shopify Partner Directory - Find Certified Plus Partners
  
• Shopify B2B Commerce - Official Documentation
  
• Shopify Plus Pricing - Official Plans and Features

About the Author

Jay Raval

SEO & Content Marketing Specialist at WebContrive

Jay Raval is an SEO & Content Marketing Specialist at WebContrive, a Certified Shopify Plus Partner agency. He writes about Shopify SEO, eCommerce growth, CRO, AI commerce, and Shopify apps based on real-world experience working with Shopify brands.

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