My picks for ecommerce UX work on checkout, product discovery, Shopify Plus, headless builds, and mobile shopping
Last updated: Oct 26, 2026. Written by Nick Babich.
The right ecommerce UX agency is the one that can show you a checkout, a product page, or a filter system it improved, with a number attached. Store design is unusually measurable: add-to-cart rate, checkout completion, and average order value move within weeks of a release, so an agency's past work either moved them or it didn't. The stakes keep rising, too. The US Census Bureau's quarterly retail e-commerce report puts Q2 2026 online sales at $340.2 billion, 17.1% of all retail, growing 12.2% year over year while total retail grew 6.7%.
I wrote this list for DTC founders, ecommerce directors, and product teams at retailers and marketplaces who are comparing an ecommerce design agency for a replatform, a redesign, or a conversion program. For every studio I cite one piece of published store work, explain where it fits, and list what I'd check before a contract is signed.
Editorial note: No agency paid to appear here. Ramotion holds the first spot because it is my default pick when a commerce product needs UX, UI, and brand from one team, from the shopping app to the seller dashboard. Clutch minimums, rates, and client rosters change, so confirm them with each agency before you sign.
I ranked agencies on published store results first and visual polish second. To make the list, a studio had to show a named ecommerce client and describe what it changed in the cart, the checkout, the product page, or the catalog. I then scored each one on the eight criteria below.
I looked for case studies that name the brand, the platform, and the metric that moved, such as add-to-cart rate, checkout completion, or orders. A gallery of pretty product photography with no conversion data scored low.
Most revenue is lost between the cart icon and the order confirmation. I gave credit to studios that redesign shipping and payment steps, slide-out carts, guest checkout, and express wallets, and that explain how they reduced cart abandonment.
Shoppers who can't find a product can't buy it. I checked for work on taxonomy, faceted filters, search synonyms, sorting on product listing pages (PLPs), and the information hierarchy of product detail pages (PDPs).
Design decisions are limited by what the platform allows in checkout. I noted which agencies have shipped on Shopify Plus, BigCommerce, Magento (Adobe Commerce), SAP Hybris, or a headless front end, and whether they know where each one bends.
Ecommerce has a deep body of usability research on forms, filters, and product pages. I favored agencies that run moderated tests with shoppers, use heuristic store audits, and back A/B tests with qualitative findings instead of guessing.
Most store traffic arrives on phones, where thumb reach, sticky add-to-cart buttons, and short checkout forms decide the sale. I looked for mobile-specific changes in each case study, not just responsive layouts.
An inaccessible checkout loses customers and invites legal demand letters. I checked whether studios mention WCAG 2.2, screen reader testing of cart and checkout, and keyboard access to filters and product variants.
Store budgets vary by a factor of fifty across this list, so I read each agency's Clutch profile for its minimum engagement and hourly band, then used those numbers to rank price. If a profile shows no pricing, the profile below tells you.
Details on each ecommerce UX agency, with one linked case study per studio so you can check the store work yourself.
Best for (ecommerce): commerce platforms, shopping apps, and DTC brands that need product UX and identity designed together
Ramotion's ecommerce work leans toward the products that power online selling. It designed Vela, a multichannel listing tool the case says serves more than 70,000 sellers, rebranded Volusion, a store platform behind 30,000 stores and more than $28 billion in transactions, and created PoGo, a social shopping app. A Clutch review from Advance Auto Parts describes an ecommerce redesign aimed at shortening time to purchase and lowering cart abandonment.
Why I would shortlist Ramotion
Commerce companies often need two experiences at once: the storefront a shopper sees and the dashboard a merchant uses to manage listings and orders. Ramotion designs both and ties them to one brand system, so product cards, seller tools, and checkout screens feel like the same company.
Best fit
Verify before hiring
Score: 5.0
Best for (ecommerce): global retail brands redesigning the full store, from navigation to one-page checkout
Work & Co's Aesop case study is the most complete store redesign on this list. The team rebuilt Aesop's store end to end, rolled it out to 43 countries, and had a working prototype two weeks after kickoff. The redesign added a one-page checkout, personalized recommendations for returning customers, and product bundles by skin type, all on a Hybris back end. Work & Co reports a 15% higher conversion rate within 60 days of launch.
Why I would shortlist Work & Co
Multi-country stores break on currencies, languages, tax rules, and regional payment methods. Work & Co has shown it can keep a premium brand feel while simplifying checkout across dozens of markets.
Best fit
Verify before hiring
Score: 4.9
Best for (ecommerce): brand-led stores where the product story and the purchase path have to work together
Instrument redesigned the Oura ring store, and its Oura case study describes new information architecture, navigation, and rounds of user testing. Instrument reports a 3% lift in funnel progression one month after launch, and the site was named an E-commerce Design Awards Site of the Day in 2025.
Why I would shortlist Instrument
Smart hardware, apparel, and premium goods need a PDP that explains the product without slowing the buyer down. Instrument balances editorial storytelling with a clear path to size selection, add-to-cart, and checkout, and it tests that path with shoppers before launch.
Best fit
Verify before hiring
Score: 4.8
Best for (ecommerce): Shopify Plus and BigCommerce stores that want UX changes proven by A/B tests
Codal's Origin case study is a clear example of conversion work on Shopify Plus. Over 12 months the team ran more than 30 A/B tests for the apparel brand and reports a 46% lift in add-to-cart, 28% higher checkout completion, 21% more orders, and $3.31 million in additional sales. Codal also lists a Magento to Shopify Plus migration for Thermos completed in eight weeks and moderated user testing for Garrett Popcorn on BigCommerce.
Why I would shortlist Codal
Replatforming and optimization usually go to different vendors, which slows everything down. Codal covers migration, store UX, and experimentation in one contract, so test ideas reach production without a handoff.
Best fit
Verify before hiring
Score: 4.7
Best for (ecommerce): DTC brands on Shopify Plus that need better search, filtering, and product pages
Avex is a New York Shopify studio, and its TYR case study reads like a product discovery checklist. The team reworked the product taxonomy, filters, and search synonyms, made PLP filters sticky, kept the PDP add-to-cart button persistent on scroll, and added a slide-out cart. Avex reports TYR's Q4 2025 revenue up 25% and orders up 37% year over year. It also replatformed Quip to Shopify Plus with Recharge subscriptions.
Why I would shortlist Avex
For catalogs with many sizes, colors, and use cases, the filter panel and the product page do most of the selling. Avex focuses on exactly those surfaces and builds on the platform most DTC brands already use.
Best fit
Verify before hiring
Score: 4.6
Best for (ecommerce): conversion research and ongoing optimization for established online stores
The Good is a conversion optimization studio for ecommerce brands. Its Swiss Gear results page reports a 328% increase in email signups, and a mobile menu change that cut mobile bounce by 8% and raised time on site by 84%. The firm also describes an audit for the furniture maker Knoll that examined mobile cart abandonment.
Why I would shortlist The Good
Many stores don't need a redesign; they need to find the five issues blocking checkout and fix them in order. The Good starts from analytics and shopper research, then prioritizes changes, which suits teams with traffic but flat conversion.
Best fit
Verify before hiring
Score: 4.5
Best for (ecommerce): Shopify and Magento stores with subscriptions, bundles, and custom cart logic
Absolute Web has built stores in Miami since 1999. Its Four Sigmatic case study covers a move from a headless setup back to native Shopify, a Rebuy smart cart, and a subscription program. In a Clutch review, the produce delivery brand Farmbox says its conversion rate rose from about 3 to 4% to about 5 to 6% after Absolute Web added Recharge subscriptions and a drawer cart.
Why I would shortlist Absolute Web
Subscription commerce adds plan selection, skip and swap controls, and account management to the usual store flows. Absolute Web has shipped those patterns on both Shopify and Magento, and it is honest that headless isn't always the right answer.
Best fit
Verify before hiring
Score: 4.5
Best for (ecommerce): accessible Shopify stores, custom bundles, and B2B ordering on a moderate budget
DigitalSuits' Seven Sundays case study pairs a custom bundle builder with subscriptions and an accessibility overhaul. The agency reports raising the store's WCAG 2.2 score from 57% to 95% and selling 2,861 bags through the new bundles. In a Clutch review, water brand Aquablu describes a Shopify Plus store serving both B2B and B2C buyers with ERP integration, which cut manual order work by 60%.
Why I would shortlist DigitalSuits
Few agencies treat accessibility as a conversion lever, but keyboard-friendly variant pickers and labeled checkout fields help every shopper. DigitalSuits also handles wholesale price lists and account ordering, which many DTC studios avoid.
Best fit
Verify before hiring
Score: 4.4
Best for (ecommerce): shopper research and usability testing before a redesign or replatform
BIXA is a research firm, and its retail and ecommerce research page covers checkout and cart abandonment studies plus usability testing with real shoppers. Its Clutch portfolio says ShopPBS saw product conversions rise by over 400% after implementing BIXA's recommendations, and lists more than 500 in-store interviews for the thrift retailer 2nd Ave.
Why I would shortlist BIXA
A redesign built on assumptions tends to move the wrong buttons. BIXA tells you why shoppers leave the cart, what they search for, and how they compare products, so your design partner works from evidence.
Best fit
Verify before hiring
Score: 4.3
Ramotion leads overall, Codal and The Good lead on checkout and conversion, and Avex leads on search and filtering. In the chart, every studio gets a 0 to 10 mark on five ecommerce criteria and an overall mark. The marks reflect my reading of the published store work, not reviews from shoppers or clients.
Pick the agency whose store work matches your platform, your catalog, and your biggest leak in the funnel. A studio that shines at luxury PDP storytelling may be slow at the steady A/B testing a mature store needs, and a CRO shop may not be the right team for a full replatform.
Pull your funnel before you talk to agencies. If shoppers drop on product listing pages, you need search and filtering work. If they add to cart and leave, you need checkout and shipping-cost clarity. An agency that asks for this data in the first call is usually the right kind.
Platform rules shape checkout design more than taste does. Shopify's guide to checkout extensibility notes that the additional scripts section of checkout settings became view-only on August 28, 2025, so custom thank-you page and tracking code now has to be rebuilt as apps, pixels, and extensions. Ask every Shopify agency how it handles that limit.
Design changes to the payment page touch security rules. The PCI Security Standards Council explains in its guidance on payment page security and e-skimming that PCI DSS v4 requirements 6.4.3 and 11.6.1 require merchants to authorize and monitor every script on payment pages. A new review widget or tracking tag in checkout needs sign-off, so the agency should plan for it.
If you sell into Europe, the European Commission lists e-commerce among the services covered by the European Accessibility Act, which has applied since June 28, 2025. In the US, inaccessible checkout and product filters are a common source of ADA complaints. Ask each finalist to show how a blind shopper or a keyboard user would pick a size, open the cart, and pay.
A strong ecommerce UX proposal names the funnel metric it will move, the pages it will touch, and how results will be measured after launch. If you're writing the brief yourself, my template for a UX design brief covers the sections an agency needs to price the work.
Every ecommerce sub-niche has a different pressure point, so I match agencies to the store type first. A subscription brand worries about plan selection and churn, while a B2B distributor worries about reorders and account pricing. For each store type, the image pairs the UX priority with the platform question to settle and the studios from this page I'd call first.
Ecommerce UX projects with the agencies on this list start at $5,000 for a focused fix and run past $250,000 for an enterprise store redesign. These figures are the minimum project sizes the agencies list on Clutch, checked on Oct 26, 2026, so treat them as planning floors rather than quotes.
Hourly bands on Clutch run from $50 to $99 (DigitalSuits) through $100 to $149 (Absolute Web, Avex) and $150 to $199 (Ramotion, Codal, BIXA) up to $200 to $300 (Instrument). The Good doesn't list pricing, and Work & Co's listed figures look like placeholders. Before you compare quotes, estimate what a lift in checkout conversion is worth; my article on UX ROI shows how to do that math.
An ecommerce UX project follows the usual product design stages, with more measurement at each step because every change shows up in revenue. If you're deciding between a full rebuild and targeted fixes, my guide to a UX redesign explains when each makes sense.
The four graphs below are about working style, not rank, and each axis runs from 0 to 10. On the marketing-driven vs product-focused graph, the left side holds studios known for brand storefronts and campaign pages, and the right side holds teams that build commerce products such as shopping apps and seller tools. Ideation vs execution separates research and concept teams from studios that build and launch Shopify or headless stores. Usability vs aesthetics shows whether checkout efficiency or visual merchandising leads the work. The price graph follows the Clutch numbers from the cost block above, from the $5,000 entry tier to the $250,000 enterprise tier.
Walk away from any agency that quotes a conversion lift before it has opened your analytics or tried your checkout on a phone. The store-specific warning signs are below, and my broader guide to warning signs in a UX design partner adds the ones that apply to any project.
Key Takeaways
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