Best Ecommerce SEO Agencies in 2026

Founded in London in 2012 by Kevin Gibbons, Re:signal puts 80% of its work into ecommerce and retail, according to Clutch, and is a certified B Corp. Clients include ASICS, Under Armour, EssilorLuxottica, FatFace and Ocado, and it reports a 96% organic revenue lift for FatFace and £2.76m in sales for VivoBarefoot. It covers technical SEO, digital PR, Google Shopping and Amazon, plus an AI search practice for agentic commerce, and runs the Re:commerce conference.

Harry Sanders founded StudioHawk in 2015 to do only SEO, and it now claims more than 120 specialists working from Prahran, Sydney, London and Atlanta. Its client list leans toward retail, including Officeworks, City Beach, Clarks, PetStock, Kogan and The Good Guys, and it can field technical, content and digital PR specialists on one account for migrations and sites with thousands of product pages. Its 119 reviews average 4.8.

SALT.agency is an independent Leeds technical SEO firm founded in 2014 by Martin Woods and Reza Moaiandin. It works on enterprise ecommerce stacks such as Salesforce Commerce and SAP Commerce, plus JavaScript rendering, headless builds and log file analysis. Named clients include Reformation and TCGPlayer, and it reports that insurer Bikmo roughly doubled organic traffic after consolidating four country sites into one domain. It won the Queen's Award for Enterprise in International Trade in 2022.

Victorious is a San Francisco SEO company that does search and nothing else, covering technical SEO, migrations, link building, content and answer engine optimisation. It now serves mid-market and enterprise companies, and named clients include Wayfair, Bissell and SoFi; it reports a 200% revenue increase for apparel brand UNIONBAY. It holds a 4.8 rating from 70 reviews and has won Search Engine Land's Global SEO Agency of the Year.

Optimising has done only SEO from Richmond, Melbourne, since 2008, and a business magazine roundup singles out migrations and enterprise ecommerce as the work it is most often brought in for. Its services include technical audits, Shopify SEO, digital PR and GEO campaigns, and it names adidas, Chemist Warehouse and Nando's as clients. It is a certified B Corp and shows a 5.0 Google rating from around 61 reviews.

Siege Media built its name on linkable assets such as data studies and visual guides, and now packages GEO, digital PR and Reddit marketing alongside content. For consumer brands it reports 46.5K LLM citations and a 356% increase in traffic value for Instacart, with Purple among its published case studies. CEO Ross Hudgens wrote a book on generative engine optimization, and the agency holds a 5.0 rating from 20 reviews.

Calibre9 is a Collingwood SEO-only agency founded by Josh Thomson that pairs ecommerce SEO with Google Shopping and Merchant Center optimisation, link building and site migrations. Mizuno credits it with handling a 2020 site migration, and independent Melbourne roundups note an APAC Search Awards win for fashion brand Ghanda. Clients describe working with one named strategist who sends detailed reports, and its Google profile shows 4.9 from about 152 reviews.

ClickSlice is a Shoreditch ecommerce SEO agency founded by Joshua George, with Clutch showing about three quarters SEO and one quarter Google Ads and Shopping. Link earning is its largest SEO line, alongside migrations, CRO and AEO work, and engagements run month to month with no long lock-in. Clients include Udemy, Humax, Plumbworld and Honeypot Furniture, it reports a 501% organic traffic increase for Dino Decking, and it holds 5.0 from six Clutch reviews.

Growth Hacker is a founder-led Montreal shop that combines Shopify SEO with conversion testing, so new traffic is worked into orders. It reports doubling Steadiwear's organic traffic in under three months and a 40% online sales lift for Charlie B through CRO, and names Moroccanoil and Laurier Optical among clients. Work is delivered in English and French, and it holds a 4.9 average across 26 Clutch reviews, the latest from September 2026.

Coalition Technologies is a Los Angeles SEO and ecommerce agency founded in 2009, with offices in Seattle and Austin and a team of 50 to 249 on Clutch. SEO makes up about 70% of its work, with web design, development and conversion optimisation alongside it. It holds 167 Clutch reviews at a 4.8 average, and Clutch states SEO packages from $1,800 a month with a $1,000 minimum, which helps stores budget up front.

ICS-digital is a Leeds agency with more than 90 staff and a network of over 300 writers, editors and linguists, working in about 100 languages across 58 countries. It combines technical SEO with native-language content, digital PR and a sister translation brand. It reports 259% year-on-year traffic growth across 16 markets for IG, names Deliveroo and Loop Earplugs among clients, and holds a 4.8 rating from 11 Clutch reviews.

Infidigit is a Mumbai search-first agency founded in 2017 by Kaushal Thakkar, who previously ran SEO at Myntra. It focuses on SEO for large, complicated sites, including ecommerce category optimisation, and built Infigrowth for rank tracking and LLM monitoring. It reports organic revenue up 89% in four months for Babyshop's India launch and a 14x rise in AI-platform sessions for Flipkart Seller Hub, and was named Agency of the Year at two Indian awards in 2026.

RiseUp, formerly Global Search Marketing, is a Birmingham agency whose teams cover paid search, Amazon Ads, SEO, AI search optimisation, Shopify builds and GA4 attribution, so paid and organic are measured against the same revenue. Named brands include Levi's, Vax, Micro Scooters and Chemist Direct, where it reports a 3.1x rise in organic revenue. It holds 5.0 from 10 Clutch reviews and won PPC Agency of the Year at the UK Agency Awards 2026.

Searchbloom is a South Jordan, Utah agency founded in 2014 that splits work roughly 65% SEO, 25% paid search and 10% CRO, with ecommerce SEO on its menu. Each client gets a dedicated analyst, and published pricing starts at $3,000 a month for SEO. Client-reported outcomes include tripled page-one rankings for RXBAR and 53% more organic traffic plus a 47% revenue lift for Monster House Plans, and it holds 4.9 from 40 reviews.

eSearch Logix is a Noida SEO firm, operating since 2014, whose largest Clutch industry is ecommerce, with Shopify and WordPress as its main platforms. SEO plans start at $199 a month, hourly rates sit under $25, and in-house web and app developers can fix the issues its audits uncover. It also offers Amazon SEO and AI search work, and holds a perfect 5.0 across 25 Clutch reviews.