Top Shopify Plus Agencies in the US by Specialty (2026)

Every “best Shopify Plus agency” list you've opened this year has the same tell. Read far enough and the agency that wrote it ranks itself first, with a “book a call” button waiting at the bottom. Or every agency gets an identical five stars, with no criteria and no reason one belongs above another.

You've learned to open five of these, trust none of them, and build your own shortlist from whatever case studies you can verify yourself.

That instinct is correct. So here's what we did differently. We published the bar before ranking anyone against it. We verified every agency against a live source. And we're telling you upfront that we wrote this.

The best Shopify Plus agencies at a glance

Verified ratings and published results

Ratings checked October 4, 2026. They change, so check them yourself before you shortlist.

How did we choose these agencies?

An agency had to clear five things before it was eligible for any category, including ours:

1. A verified Shopify Plus partner listing, at Plus tier or above, in the live Shopify Partner Directory.
2. US headquarters or US-primary operations.
3. A demonstrable Plus-level track record, not just a directory listing.
4. Verifiable evidence for its category: a public case study, a named client, a third-party review or an industry award.
5. Active and taking clients as of 2026.

Clearing the bar got an agency considered. Winning a category took something sharper: depth in that specific job, not general competence across all of them.

• A migration winner needed documented replatforming work.
• A headless winner needed a public Hydrogen build.
• A CRO winner needed a verified result in conversion work specifically, not a services page listing “CRO” as one of nine things it does.

That test is also why some categories are missing. International and cross-border, and subscriptions and retention, both had strong specialists. But every one we could verify was UK-headquartered, which fails our US bar.

Blend Commerce is a real example. It won Global CRO Agency of the Year 2026 at the Global Agency Awards, a genuine third-party award. By its own account, it's registered in London. So it isn't on this list, even though it would make the list look more impressive. We cut both categories rather than hand the placement to a runner-up who didn't earn it.

What does a Shopify partner tier actually tell you?

Shopify's partner program runs five tiers on its service track: Registered, Select, Plus, Premier and Platinum. When Shopify introduced them in 2025, it said placement would be based on “key performance metrics associated with each program track, including achieving commercial impact and required credentials.”

For 2026, Shopify has gone further. Its current tiering guide says credentials are waived for the year, and only commercial activity is evaluated.

Every roundup that ranks purely by tier is measuring the wrong thing. You can prove it yourself: compare any two “top Shopify agencies” lists from this year and watch the order change depending on who wrote it.

Which Shopify Plus agency is best overall? Solo Media Group

What we can show you is why a brand outgrowing a single specialist often ends up with a team built to hold brand strategy and technical execution together, instead of hiring one agency per problem.

Solo Media Group is a Shopify Platinum Partner, rated 4.9 on Clutch from 48 reviews and 5.0 on the Shopify Partner Directory from 38. We've completed 500+ merchant projects and 75+ replatforms. Four of those merchants, in four different verticals, show the range this list tests for:

Four different jobs, four verticals, one body of work.

Two of them, the Manukora retention engine and the Medik8 multi-store international build, sit in the exact two categories we cut from this list. We're not counting those as wins. We cut the categories rather than crown ourselves in them. What they show is range: the depth each specialist below brings to one job, we've brought to several, with the same team.

How does Solo Media Group compare across the specialties?

On migration, Solo Media Group has completed 75+ replatforms. The clearest example is Lifelines, where we merged two platforms and two domains into one Shopify store. Sessions rose 171%, total sales 78% and orders 53%.

On CRO, our product page and checkout work includes a Shopify revamp with a sticky add-to-cart for Newark Auto. Its conversion rate rose 20% to 30%, according to a verified Clutch review from 2023.

On B2B, we built a dedicated Shopify Plus wholesale store for Elm Biosciences alongside its consumer store, with approval flows, order minimums and ShipHero inventory sync.

On design-led builds, we created a custom Shopify Plus store for Fine By Me and rebuilt Alp N Rock on Shopify 2.0. Alp N Rock's pages now load about 40% faster, with zero loss of search traffic.

On headless, we're not the pick. We don't publish a Hydrogen build, so for a headless project, choose Domaine.

Which other Shopify Plus agency is best for enterprise migration and replatforming?

Publicis Sapient. Platinum partner, New York.

This is the team that joined the Shopify Plus partner network in August 2017 as Corra. Publicis acquired Corra in 2023, and it now operates under the Publicis Sapient name. The Shopify Partner Directory lists its focus areas as store builds and redesigns, custom apps and integrations, wholesale and B2B, and business strategy.

If your project is a Magento, Salesforce Commerce Cloud or custom-platform migration onto Plus, this is a team documented in the Shopify Plus network since 2017.

Which Shopify Plus agency is best for headless and composable commerce?

Domaine. Platinum partner, New York per the Shopify Partner Directory.

Domaine formed in September 2023 from the merger of Tomorrow and Half Helix. Before the merger, Half Helix rebuilt Shopify Supply, Shopify's own merch store, as a custom Hydrogen storefront — the first site shipped on Hydrogen, documented on Shopify's enterprise blog. It's the clearest public case on this list of a Plus partner shipping a real headless build, not just listing “headless” as a service.

Which other Shopify Plus agency is best for CRO and conversion?

Electric Eye. Premier partner, Columbus, Ohio.

The Shopify Partner Directory lists conversion optimization, migrations, store design and site performance as its focus. Electric Eye positions itself as a CRO specialist on Shopify Plus, not a generalist that also offers testing, and its 58 directory reviews are the second-largest review base on this list.

Which other Shopify Plus agency is best for B2B and wholesale?

Uncap. Platinum partner, Chicago, Illinois.

Uncap built Uncap Quotes, a configure-price-quote tool for Shopify B2B. Its named clients, including Canon Medical Systems, ULE Group, Vermont Woods Studios and Jerico, sit squarely in manufacturing and distribution, not general DTC. It also has the strongest review base on this list: 5.0 from 74 Clutch reviews.

If your Plus build has to handle quoting, tiered pricing or ERP-heavy wholesale logic, this is the specialist built around exactly that.

Which other Shopify Plus agency is best for design-led brand builds?

Avex Designs. Platinum partner, New York. Shopify partner since 2012.

The Partner Directory lists clothing and fashion, health and beauty, jewelry and lifestyle as Avex's industries, and its client work includes KHAITE, Kith and Hugo Boss. This is UX-first, design-led work, where the storefront itself is the differentiator, not just the backend running it.

How should you actually use this list?

Don't start with the badge. Start with the job:

• A migration
• A headless rebuild
• A CRO program
• A B2B storefront
• A design-led relaunch

Pull the two or three agencies here whose evidence matches that job. Then verify their current tier yourself in the live Shopify Partner Directory. Tiers change, and ours will too.

Ask each agency for the specific proof this list ran on: a public case study, a named client, a documented result. If they can't produce it, that's your answer.

Not sure which type of partner you need? Start with our guide to agency archetypes.

Frequently asked questions

We compete for one line on this page. We'd rather you pick the right specialist for your job than pick us for the wrong one.

Book a free consultation

Data checked October 4, 2026, from the Shopify Partner Directory, Clutch, Shopify case studies and each agency's published work.