12 Best Shopify Plus Agencies in 2026 (USA): Compared on Focus, Tier & SEO

The best Shopify Plus agency for an established US brand is the one that has done a migration like yours, can show the redirect map and indexation policy it used, and has SEO and conversion people involved before launch rather than after. Below are 12 Shopify Plus agencies compared on focus, stated partner tier, US presence and SEO capability. Disclosure: we're a Shopify Plus agency and include ourselves, clearly labelled. Every other fact comes from each agency's own website as of 9 October 2026. Partner tiers are as the agencies state them, so check them in the Shopify Partner Directory before you sign.

What does a Shopify Plus agency do?

A Shopify Plus agency designs, builds, migrates and supports stores on Shopify's enterprise plan. Plus adds expansion stores, B2B Edition, Shopify Functions, Checkout Extensibility, Launchpad, Flow and higher API limits, so Plus agencies spend more time on integrations (ERP, PIM, 3PL), multi-market setup and migrations than on themes.

How we compared these agencies

• Focus: what the agency says it's best at (migrations, B2B, headless, design, CRO).
• Stated partner tier: quoted from the agency's own site. Shopify tiers include Select, Plus, Premier and Platinum.
• US presence: offices or locations listed on the agency's site.
• SEO capability: whether the agency publishes an SEO or migration-SEO service, because organic traffic is what a migration most often loses.
• Published pricing: rare. Only one agency besides us publishes engagement pricing.

No agency paid to be included, and we didn't rank on self-reported results. Order after our own entry is not a quality ranking: pick by fit.

The 12 best Shopify Plus agencies (2026)

1. Conversion: Plus builds with SEO and CRO in the same team

Conversion. We wrote this guide, so weigh this entry accordingly. Conversion is a San Francisco based Shopify Plus Partner that builds and migrates Plus stores with the SEO and CRO teams involved from day one: redirect maps, indexation policy for Markets and B2B Edition, and A/B-tested templates. Ongoing SEO and CRO engagements are month-to-month after the first 90 days.

• Best for: Brands that want the build, migration SEO and conversion work owned by one team.
• Watch out for: Shopify only. If you also need Salesforce Commerce Cloud or Adobe work, choose a multi-platform agency.

2. Netalico: Premier Partner for mid-market migrations and retainers

Netalico. Netalico describes itself as a Shopify Plus Premier Partner and lists US locations including San Francisco, Los Angeles, Chicago, New York and Miami. It focuses on migrations from BigCommerce and Magento, Plus development and Klaviyo, and says about 85% of clients work with it on a monthly retainer. Clients include Oatly, Big Green Egg and Feetures. Its Shopify SEO services publish retainers of $2,700 to $10,000 a month.

• Best for: Mid-market brands moving from Magento or BigCommerce that want a long-term retainer.
• Watch out for: SEO is part of the offering, but migration SEO is described as audits rather than a dedicated programme. Ask for the redirect-map process.

3. Domaine: Large-scale migrations and headless for established brands

Domaine. Domaine (domaineworldwide.com) is a remote-first Shopify partner with US locations in New York, Los Angeles and Charleston. It claims more than 150 migrations, including from Salesforce Commerce Cloud and Adobe, and works on headless, B2B, POS and internationalisation for brands such as Timex, Arhaus and Ulla Johnson. It quotes a 30 to 52 week average migration timeline.

• Best for: Established brands replatforming from SFCC or Adobe Commerce.
• Watch out for: Long timelines and enterprise budgets. Confirm who owns migration SEO and redirect QA.

4. Barrel: Full-service Plus agency with retention, SEO and CRO

Barrel. Barrel works with consumer brands such as McCormick, L'Oréal Paris and Kind Snacks on Shopify Plus builds, redesigns and migrations, plus retention, SEO, CRO and marketplaces. It lists New York, Los Angeles, Toronto and Philadelphia.

• Best for: Consumer brands that want design, build and growth services in one agency.
• Watch out for: We couldn't confirm Barrel's partner tier in text. Check the Shopify Partner Directory.

5. We Make Websites: Design-led Plus agency, now part of BORN Group

We Make Websites. We Make Websites has been a Shopify partner since 2011, with offices in London and New York, and is now part of BORN Group. It covers UX and UI, CRO, development, internationalisation and headless builds for brands such as Good American, UFC and Hasbro.

• Best for: Fashion and lifestyle brands that put design first.
• Watch out for: No dedicated SEO service found. Pair it with an SEO team for migrations.

6. Elogic Commerce: B2B, ERP and composable builds with published pricing

Elogic Commerce. Elogic is a Shopify Plus Partner headquartered in Tallinn, Estonia, with a New York office. It specialises in B2B, replatforming, headless and ERP/PIM integrations for clients including Disney, HP and Buff. It is the only agency in this list that publishes pricing: most engagements run $25,000 to $500,000+, B2B portals $75,000 to $150,000, and enterprise replatforming $200,000 to $500,000+.

• Best for: B2B and integration-heavy builds where ERP and PIM are the hard part.
• Watch out for: Multi-platform agency. Its migration pages promise no SEO loss but there's no dedicated SEO programme.

7. Codal: Unified commerce and product engineering

Codal. Codal describes itself as a Shopify Platinum Partner, with Chicago listed first among its offices. It works on unified commerce, headless and product engineering for clients such as Thermos, Cost Plus Drugs and Flexport.

• Best for: Complex, engineering-heavy builds with many systems to connect.
• Watch out for: Multi-platform, and SEO is limited to technical SEO.

8. Electric Eye: Ohio-based Premier Partner for builds, migrations and retainers

Electric Eye. Electric Eye, based in Columbus, Ohio, describes itself as a Shopify Premier Partner founded in 2016. It handles design, development, migrations and retainers for brands including Giordano's Pizza, Barton Perreira and Rancho Gordo, and offers a diagnostic service.

• Best for: US mid-market brands that want a Shopify-only build and support partner.
• Watch out for: No dedicated SEO service found.

9. Coalition Technologies: Shopify development plus large in-house SEO team

Coalition Technologies. Coalition, based in Culver City, California, has worked with Shopify since 2011 and combines design and development with a large SEO and paid-search practice, for brands such as Hedley & Bennett and Urban Armor Gear.

• Best for: Brands that want SEO-led growth from the same agency that maintains the store.
• Watch out for: Its Plus page looks dated. Ask who on the team has recent Plus and Markets experience.

10. Charle: Plus-accredited agency with dedicated migration SEO

Charle. Charle is a London-based agency with Shopify Plus accreditation, an office in Manchester and a New York phone line. It is the only agency in this list with a dedicated migration-SEO service page, alongside SEO, GEO, CRO and builds for brands such as Cambridge Satchel and Muc-Off.

• Best for: UK and US brands where protecting organic traffic in a migration is the priority.
• Watch out for: US presence is limited, so check time-zone overlap.

11. Blue Stout: CRO-first Plus agency for $5M–$100M+ brands

Blue Stout. Blue Stout positions itself as a long-standing CRO agency in the Shopify Plus Partner programme, combining A/B testing with Plus development and migrations for brands such as Mad Rabbit, Mountain House and BruMate. It says it works with $5M to $100M+ Shopify brands.

• Best for: Brands whose main constraint is conversion rate, not the build.
• Watch out for: No SEO service found. Bring separate SEO support for migrations.

12. Fuel Made: Plus builds with deep Klaviyo expertise

Fuel Made. Fuel Made is a Shopify Plus Partner and Klaviyo Master Elite partner covering design, development, Klaviyo and CRO for brands including Tuft & Paw, Beardbrand and Figs.

• Best for: DTC brands that want the store and email/SMS built together.
• Watch out for: No SEO service found.

How much does a Shopify Plus agency cost?

See our Shopify Plus pricing guide for the platform costs, and budget migration SEO as its own line item: redirect mapping, staging crawls and post-launch monitoring are where traffic is saved or lost.

Migration SEO: the part most Plus projects underbudget

• Full URL inventory first: crawl the legacy site and export every indexed URL from Search Console, including layered-navigation, paginated and CMS URLs.
• Map to Shopify's fixed structure: Magento and SFCC URLs collapse into /products/ and /collections/, so the redirect map is a real piece of work, not an export.
• Bulk import and test: large redirect sets go in through the Admin API or CSV, then get crawled on staging.
• Parity on top pages: titles, metadata, structured data and internal links rebuilt for the pages that carry revenue.
• Post-launch monitoring: Search Console coverage, 404s and rankings watched daily for the first weeks.

Our Shopify Plus SEO agency team scopes this as a project with acceptance criteria, alongside whichever build agency you choose.

Markets or expansion stores?

Ask every agency how they'd structure your international stores. Shopify Markets with subfolders keeps one domain and one catalog, and is the better SEO default. Expansion stores (separate storefronts) suit markets that need different catalogs, apps or legal entities, but each one has to rank on its own and needs a validated hreflang cluster with x-default.

Questions to ask a Shopify Plus agency

1. Can we see a redirect map and a post-launch traffic chart from a migration like ours?
2. Who owns SEO during the migration, and what are the acceptance criteria for launch?
3. How would you structure our international stores: Markets subfolders or expansion stores, and why?
4. How do you handle B2B Edition catalogs and price lists so they don't get indexed?
5. Which ERP, PIM and 3PL integrations have you shipped on Plus?
6. What is your partner tier, and can we verify it in the Shopify Partner Directory?
7. Who will be on our project, and who supports us after launch, under what SLA?
8. How do changes get to the live theme: version control, review and staging?

Red flags

• No migration case study with traffic before and after.
• "We'll handle redirects at launch" with no URL inventory.
• Edits made directly on the live theme.
• Partner tier that doesn't match the Shopify Partner Directory.
• No plan for B2B catalog indexation or international hreflang.
• Recommending headless without a server-side rendering and SEO plan.