In short: Three names stand out. RESONEO suits brands and e-commerce sites that want to gain visibility on Google, Google Shopping and in AI answers. Soledis is aimed at B2C and B2B brands that want to build, redesign or grow a high-performing online shop. Benoît Gaillat supports micro-businesses, SMEs, manufacturers and large groups launching, structuring or relaunching their online business. The other seven cover more specific needs: conversion, Magento, SEO, paid advertising.
- RESONEO: For brands and e-commerce sites that want to gain visibility on Google, Shopping and LLMs.
- Soledis: For B2C and B2B brands that want to build, redesign or grow a high-performing e-commerce site.
- Benoît Gaillat: For micro-businesses, SMEs, manufacturers and large groups that want to launch, structure or relaunch their e-commerce business.
- Paul Moure: For online retailers and agencies whose traffic is not converting into enough sales.
- Concilium Digital: For companies, foundations and institutions that want a single partner for their strategy and their e-commerce site.
- Xtand: For B2B or B2C merchants who want a high-performing Magento site and ongoing technical advice.
- Guillaume Guersan: For online retailers who want a single point of contact to manage SEO and paid advertising.
- Samy Thuillier: For businesses, including e-commerce sites, that want revenue-driven organic search with a single point of contact.
- Julien Gourdon: For brands and e-commerce sites that want to stay visible on Google and be cited by AI.
- UpMyBiz: For businesses that want to launch, structure or grow their e-commerce operation with strategic and hands-on support.
Updated on 13 November 2026.
Why hire an e-commerce consultant in 2026?
The market keeps growing. According to the report published by Fevad in February 2026, online sales of products and services reached €196.4 billion in 2025, up 7% year on year, with 42.2 million online shoppers in France. Fevad then announced growth of 6.6% in the first half of 2026.
But this growth mainly benefits the biggest players. Again according to Fevad, nearly 69% of sites generate less than €100,000 in revenue per year. Conversely, sites above €10 million account for just over 1% of players but capture more than 78% of revenue. For an average site, every decision about traffic, conversion or technology carries a lot of weight.
Business leaders looking for a consultant often share the same fears. Paying for an audit that ends up gathering dust in a drawer. Becoming dependent on a technology or a provider. Losing visibility as Google and AI assistants change the way customers find products. A good consultant addresses these fears with clear priorities and measurable results.
How did we choose these 10 consultants?
This ranking is based solely on what each company publishes itself (its website, its methodology and case-study pages), as read at the time of the update. Four criteria counted:
- Clear specialism: We selected profiles whose core business is easy to read: visibility, conversion, technology or overall strategy.
- E-commerce experience: Each player already works for online shops and understands their constraints: catalogue, margins, seasonality, logistics.
- Results focus: We favoured those who link their work to sales and revenue, not just to traffic or rankings.
- Transparent offering: Each player's website clearly sets out its services, its method and the type of clients it supports.
The 10 Best E-commerce Consultants in France (2026)
1. RESONEO
RESONEO is an independent digital marketing consultancy specialising in search engines, data strategies and digital media performance. Its consultants work on SEO, GEO, Search & Shopping, Display & Social Ads and Analytics. The approach combines business vision, a technical approach, media expertise and artificial intelligence applied to Search. The consultancy relies on external tools and on its own in-house platform, MATRICEO. It also offers training and support for international expansion.
Strengths:
- More than 90 expert consultants, according to the website
- In-house tool platform MATRICEO
- Clients cited: Ducray, Generali, Easyvoyage, Dassault Systèmes
Who it's for: Brands and e-commerce sites that want to gain visibility on Google, Shopping and LLMs.
2. Soledis
Soledis is an e-commerce and web marketing agency based in Brittany. It builds, redesigns and migrates sites on Shopify, PrestaShop, Sylius or WordPress, for both B2C and B2B. It also activates acquisition levers: SEO, GEO, Ads, marketing automation, tracking and data. The agency offers AI agents and services, branding and UX/UI, ERP, CRM and PIM connectors, as well as hosting and maintenance. It champions a holistic approach, demanding choices and a committed team for tangible results.
Strengths:
- Shopify, PrestaShop and Sylius expertise, including migrations and B2B portals
- 360° approach: platform, web marketing, data, AI and hosting
- Clients cited include Café Joyeux and Véto Avenue
Who it's for: B2C and B2B brands that want to build, redesign or grow a high-performing e-commerce site.
3. Benoît Gaillat
Benoît Gaillat is a senior e-commerce consultant working in Bordeaux, Paris and remotely. An online retailer since 2004, he has worked at Cdiscount, Rueducommerce and Le Palais des Thés. He says he has carried out more than 400 support and audit assignments. He offers coaching, interim e-commerce management, and expertise in acquisition, conversion, Shopify, SEO and Google Analytics. He builds strategy and business plans, manages providers and redesigns, and trains teams. He also specialises in turning around struggling sites.
Strengths:
- Hands-on experience at Cdiscount, Rueducommerce and Palais des Thés
- More than 400 support and audit assignments claimed
- Shopify, SEO and Google Analytics expertise, with teaching in business schools
Who it's for: Micro-businesses, SMEs, manufacturers and large groups that want to launch, structure or relaunch their e-commerce business.
Visit the Benoît Gaillat website
4. Paul Moure
Paul Moure is a freelance e-commerce CRO consultant. He identifies what is holding back sales on your site and fixes it. He offers two services: a full CRO audit (web analytics, qualitative data, competitors, traffic quality, heuristic analysis) concluding with an ICE table and a prioritised roadmap, followed by CRO project management with A/B testing, user testing, coaching and team management. His method follows five steps, with no gut-feeling decisions. He works directly with clients or on a white-label basis.
Strengths:
- Five-step, data-driven CRO method
- Audit delivered with an ICE table and a prioritised roadmap
- Works directly or white-label for agencies
Who it's for: Online retailers and agencies whose traffic is not converting into enough sales.
5. Concilium Digital
CONCILIUM is an independent digital transformation consultancy, based in Paris since 2015. It brings together advice and implementation: digital strategy, artificial intelligence, websites, business platforms and influencer marketing. On the e-commerce side, it designs sites with design, development, SEO and hosting included. A multidisciplinary team takes your project from diagnosis to go-live, as with the complete digital overhaul for the British luxury house Swaine.
Strengths:
- Consulting and execution combined, from brief to go-live
- E-commerce site with design, development, SEO and hosting included
- Clients cited: Swaine, Accuracy, KPMG, e-Enfance / 3018
Who it's for: Companies, foundations and institutions that want a single partner for their strategy and their e-commerce site.
Visit the Concilium Digital website
6. Xtand
XTAND is an e-commerce agency based in Bordeaux, in business for more than 15 years. It builds and maintains B2B and B2C e-commerce sites on Magento, Hyvä, WordPress and Shopify. Its e-commerce consulting offer covers B2B, B2C and unified commerce advice. It carries out technical audits, defines a growth strategy and selects the right technologies. A team of experts is managed by a single point of contact, with a method tailored to your organisation and budget.
Strengths:
- Hyvä bronze partner, recognised Magento expertise
- More than 200 B2B and B2C projects delivered
- Single point of contact for consulting, development and maintenance
Who it's for: B2B or B2C merchants who want a high-performing Magento site and ongoing technical advice.
7. Guillaume Guersan
Guillaume Guersan has been a freelance digital marketing consultant for more than ten years. He brings three levers under a single management: SEO, Google Ads and Meta Ads. His method is gradual. He first stabilises one channel, then activates the others to create synergies. Google Ads data guides the SEO content, and Meta Ads is used for retargeting. Every SEO strategy starts with an audit. His case studies include e-commerce sites, among them a Shopify store.
Strengths:
- Unified management of SEO, Google Ads and Meta Ads
- Gradual three-phase method to create synergies
- Detailed e-commerce case studies with the method explained
Who it's for: Online retailers who want a single point of contact to manage SEO and paid advertising.
Visit the Guillaume Guersan website
8. Samy Thuillier
Samy Thuillier is a B2B SEO consultant whose only stated metric is revenue generated, not traffic. He covers SEO, SEO for AI, CRO and content, with a single point of contact from strategy to invoice. His four-week method moves from a technical audit and quick wins to an intent-led content roadmap, publishing and on-page optimisation, and then the first revenue signals. He notes that he also works with e-commerce sites, B2C businesses and marketplaces.
Strengths:
- Approach focused on revenue rather than traffic
- Structured four-week method, from audit to results
- Published case studies and many named client testimonials
Who it's for: Businesses, including e-commerce sites, that want revenue-driven organic search with a single point of contact.
Visit the Samy Thuillier website
9. Julien Gourdon
Julien Gourdon is a senior SEO consultant and GEO specialist. He makes your brand visible on Google and cited by ChatGPT, Gemini, Perplexity and AI Overviews. His method combines a data-driven SEO strategy, optimisation for generative engines and AI-powered automation, using proprietary tools. He offers three formats: a GEO strategy sprint, an outsourced Head of SEO role, or training and coaching. You work with him alone, from scoping to execution.
Strengths:
- More than ten years of SEO experience, including stints at Havas Market and Resoneo
- Public barometer measuring how often consultants are cited in ChatGPT
- Clients include CANAL+, E.Leclerc, GrandVision and L'atelier des chefs
Who it's for: Brands and e-commerce sites that want to stay visible on Google and be cited by AI.
Visit Julien Gourdon's website
10. UpMyBiz
UpMyBiz is an e-business consultancy based in Lyon. The team, made up of former e-commerce retailers, helps companies make the right strategic choices and manages their implementation. The method starts with analysis phases (business, technology choices, market, benchmark) to define an action plan and validate its feasibility. This is followed by support from a dedicated e-commerce consultant or a website redesign project. Their work covers SEO, SEA, analytics, conversion and customer loyalty, as well as recruitment, training and funding.
Strengths:
- A team of former e-commerce retailers, with hands-on recommendations
- More than 200 audit and strategy projects since 2012
- A dedicated e-commerce consultant, from strategy to execution
Who it's for: Companies that want to launch, structure or grow their e-commerce business with strategic and operational support.
The 10 Compared in One Table
| # | Company | Who it's for | Key strength | Website |
|---|---|---|---|---|
| 1 | RESONEO | Brands and e-commerce sites that want greater visibility on Google, Shopping and LLMs. | More than 90 expert consultants, according to the website | resoneo.com |
| 2 | Soledis | B2C and B2B brands that want to build, redesign or grow a high-performing e-commerce site. | Shopify, PrestaShop and Sylius expertise, including migrations and B2B portals | soledis.com |
| 3 | Benoît Gaillat | Micro-businesses, SMEs, manufacturers and large groups that want to launch, structure or relaunch their e-commerce business. | Hands-on experience at Cdiscount, Rueducommerce and Palais des Thés | gaillat.com |
| 4 | Paul Moure | E-commerce retailers and agencies whose traffic isn't turning into enough sales. | Five-step, data-driven CRO method | paulmoure.com |
| 5 | Concilium Digital | Companies, foundations and institutions that want a single partner for their e-commerce strategy and website. | Consulting and execution combined, from brief to go-live | concilium.digital |
| 6 | Xtand | B2B or B2C merchants who want a high-performing Magento site and ongoing technical advice. | Hyvä bronze partner, recognised Magento expertise | xtand.fr |
| 7 | Guillaume Guersan | E-commerce retailers who want a single point of contact to manage SEO and paid advertising. | Unified management of SEO, Google Ads and Meta Ads | guersanguillaume.com |
| 8 | Samy Thuillier | Companies, including e-commerce sites, that want revenue-focused SEO with a single point of contact. | Approach focused on revenue rather than traffic | samythuillier.com |
| 9 | Julien Gourdon | Brands and e-commerce sites that want to stay visible on Google and be cited by AI. | More than ten years of SEO experience, including stints at Havas Market and Resoneo | julien-gourdon.fr |
| 10 | UpMyBiz | Companies that want to launch, structure or grow their e-commerce business with strategic and operational support. | A team of former e-commerce retailers, with hands-on recommendations | upmybiz.com |
What should you check before signing?
- Ask for references from e-commerce sites comparable to yours, in both size and sector.
- Check who will actually do the work: the consultant themselves, an in-house team or subcontractors.
- Insist on written deliverables and a prioritised action plan, not just a diagnosis.
- Agree from the outset on the metrics to be tracked, such as conversion rate, revenue or customer acquisition cost.
- Read the contract's exit terms and make sure you keep ownership of your accounts, data and content.
Where Does Esekai Fit In?
Where does Esekai fit in? Esekai is a video agency in Paris, a vertical video studio founded by Tony Lo. The consultants ranked here work on your website, traffic and conversion. Esekai produces what feeds those channels: short-form videos, creative ads, UGC, AI videos and TikTok Ads and Meta Ads campaigns. More than 350 brands and businesses supported in 3 years, including e-commerce retailers. Esekai, creative ads agency.
Conclusion
The right consultant isn't the best known, but the one who solves your main problem. Visibility, conversion, technical issues or strategy: identify what's holding you back, then compare two or three profiles from this ranking. Ask for references, a written action plan and clear metrics. Only then can you sign with confidence.
Honourable Mentions: 10 More Worth Knowing
| Company | Who it's for | Website |
|---|---|---|
| Wapiti Agency | Online merchants, especially on PrestaShop or Shopify, who want a solid store and more sales. | wapiti-agency.com |
| Campioni | B2B or B2C companies that want to structure and accelerate their e-commerce with an experienced senior leader. | campioni.fr |
| Call to Action | SMEs and large accounts looking for an experienced e-commerce consultant to strengthen or lead a digital project. | ctacweb.com |
| ÇABOOST | Companies that want to strengthen their e-commerce teams with embedded experts on secondment. | caboost.fr |
| VOO Conseil | SMEs and mid-sized companies that want to build or structure their e-commerce business with step-by-step support. | voo-conseil.fr |
| Digital Experience | Companies that want to scope, launch or turn around an e-commerce project with an experienced consultant by their side. | digitalexperience.fr |
| Sixième Sens Business | SMEs and e-commerce retailers who want a pragmatic consultant to structure and manage their online sales. | sixiemesensbusiness.fr |
| Cursim | Retail chains looking for a senior e-commerce project manager embedded in their teams for several months. | cursim.fr |
| Piweb | B2B SMEs and micro-businesses in Loire-Atlantique with no in-house marketing resources that sell online to professionals. | piweb.fr |
| Aymeric Marquant | Tradespeople, lawyers, notaries, restaurants and small businesses that want a WordPress site or an online store that ranks well. | aymericmarquant.fr |
Does your company deserve a place in this ranking? Write to us at contact@esekai.fr: we read every submission.
Our Other Rankings
- The 10 Best Digital Marketing Consultants in France (2026)
- The 10 Best Growth Marketing Consultants in France (2026)
- The 10 Best Brand Strategy Consultants in France (2026)
- The 10 Best Google Ads Consultants in France (2026)
- The 10 Best SEO Consultants in France (2026)
- The 10 Best Link-Building Content Creators in France (2026)
Frequently Asked Questions
- What is the difference between an e-commerce consultant and an e-commerce agency?
- A consultant advises, diagnoses and sets priorities. They often work alone or with a small network. An agency does more of the hands-on work: website creation, development, campaigns. Some of the players in this ranking combine both. If you have an in-house team capable of executing, a consultant is often enough. If not, an agency or a hybrid profile will be a better fit.
- Do you need a generalist or a specialist consultant?
- It all depends on your problem. If you are launching or restructuring your business, a generalist will help you lay the foundations. If your difficulty is specific, such as traffic that doesn't convert or declining visibility on Google, a specialist will get results faster. First identify what's holding you back most, then choose the profile that addresses it.
- How much does an e-commerce consultant cost?
- Rates vary widely depending on the profile, duration and scope of the engagement. A one-off audit doesn't cost the same as monthly support or a complete redesign. Ask for several detailed quotes, compare the deliverables rather than just the price, and check what is included in each proposal before signing.
- How can you stay visible when customers use AI to search?
- AI assistants and Google's new results are changing the way shoppers discover products. Several players in this ranking, such as RESONEO and Julien Gourdon, work specifically on visibility in these answers. Ask your consultant how they measure this presence and what actions they recommend for your product pages and content.