Shopify agency, Stellar Projects
Looking for a Shopify agency that can turn your store into a real revenue driver? Stellar Projects has been supporting e-commerce brands on Shopify and Shopify Plus since 2018: strategy, build, SEO, Klaviyo CRM and ongoing operations.
- Our vision as a Shopify agency
- What a Shopify agency really is today
- When to call on us and what you can expect
- How to choose a Shopify agency
- Comparison of Shopify agencies in France
- How much does a Shopify agency cost?
- Where to find a Shopify agency?
- How we scope an engagement
- What we do for you
- Going further: topic cluster resources
This guide gives you our vision of the job, the criteria for choosing the right Shopify partner, a comparison of agencies in France, real price ranges and a complete FAQ covering the questions our clients ask before committing.
In summary - what you can expect from a Shopify agency:
- A clear, fast and reliable e‑commerce system that converts more
- An SEO architecture built to last and content that answers users' questions
- An email cycle that respects your customers and generates recurring revenue
- Clear support, readable metrics and genuine speed of execution
1. Our vision as a Shopify agency
We believe in a simple idea: a Shopify site is not a design object, it is a system that must explain fast, reassure fast and convert fast. Stellar Projects is a growth-focused Shopify agency: our value doesn't lie in the length of a specifications document, but in the clarity of your choices, speed of execution and the quality of what remains once the superfluous is stripped away.
We refuse visual effects that mask an inconsistent value proposition, gimmicky integrations that slow the store down and project rituals that consume energy without creating value.
In practice, we favor reusable components, understandable customer journeys, clean data, visible reassurance messages and respect for your customers' time. We take on the role of a partner: you ask us for tangible results, and we owe you clear deliverables and well-argued choices.
Our approach is formalized in the STELLAR™ Method, built on seven pillars: System, Traction, Execution, Leverage, Learning, Adaptation, Resilience. These seven dimensions structure every project scoping and every brand diagnostic we carry out. Details in our book Créer sa marque à l'ère de l'IA (Building Your Brand in the Age of AI, on Amazon).
Our promise as an official Shopify partner agency is verifiable: a theme that loads fast on mobile, SEO built on a clear architecture, an email cycle that earns more than it costs, and lightweight but effective operating rituals.
2. What a Shopify agency really is today
The term "Shopify agency" covers very different realities. Some teams sell an attractive but poorly structured theme, others pile up apps, and others still deliver redesigns that look perfect in the pitch but are slow to materialize.
Our definition is operational: a Shopify agency is a multidisciplinary team able to turn a business intention into a manageable Shopify commerce system, tailored to each brand's specific needs. If you want to understand what that means in practice, contact our Shopify agency for a tailored audit.
What we consider non-negotiable
- Mobile readability and real performance (Core Web Vitals)
- Clear architecture and well-thought-out internal linking
- Reliable tracking and GDPR-compliant consent
- Minimal but up-to-date documentation
What we avoid
- Bloated themes that are impossible to maintain
- Technical debt hidden behind effects
- Analyses with no action plan or ownership
- Operations with no metrics or decisions
One distinction comes up often in tenders: Shopify agency versus Shopify Plus agency. We covered it separately in our article Shopify Plus agency vs. Shopify agency: the certification matters less than what the team can actually deliver.
3. When to call on us and what you can expect
Call on our Shopify agency when you need clarity and execution. You give us a measurable goal, and we build the path that leads to it. We don't promise the moon, but a visible pace of progress and a store that breathes simplicity.
Here is what you can expect from the start:
Fast clarity
We distill your challenges into three concrete goals. This clarity lets you decide quickly and focus effort where it counts.
Useful deliverables
You receive editable components, action checklists and an iteration plan. No deliverables gathering dust.
Easy-to-read results
We track metrics you understand at first glance: conversion, speed, email revenue, SEO that matters.
A partner mindset
We challenge your ideas, not for sport, but to save your time and budget. Constructive disagreement is part of the service.
To dig deeper into choosing the right partner, two complementary resources: our comparison Shopify agency or freelancer, which covers that upstream decision, and our article on how to choose the right Shopify expert, which details the selection criteria.
4. How to choose a Shopify agency
Choosing a Shopify agency isn't just a matter of gut feeling or price. It's about identifying the partner who can turn your vision into measurable results. Here are our recommendations:
- Clarify your goals: revenue growth, better customer experience, migration, international expansion… The more precise your expectations, the easier it is to find the agency that meets them.
- Check the Shopify expertise: favor an official Shopify partner agency that masters the platform. Review its project portfolio, the diversity of its clients and the results achieved. Our client case studies showcase successful redesigns and migrations with no SEO loss.
- Assess communication and transparency: a reliable partner listens, asks the right questions and explains its methodology. Ask to meet the team that will work on your project.
- Compare scopes: some agencies focus on design, others offer end-to-end support (SEO, CRM, ERP integrations). Make sure the agency covers your strategic challenges.
- Plan the budget and ROI: require a detailed proposal with clear milestones, identified deliverables and measurable KPIs.
- Check references: talk to clients who have already worked with the agency. Their feedback on quality, responsiveness and meeting deadlines is invaluable.
Going further: How to find a Shopify agency to double my sales
These criteria are all the easier to assess when your needs are written down. A scoped project can be compared; a vague project can only be guessed at. Our guide to e-commerce specifications helps you set that framework before reaching out, which makes quotes genuinely comparable.
5. Comparison of Shopify agencies in France
We encourage you to compare. There is no universally best agency, only the best one for your goals. Use the table below to build a shortlist, then supplement it with directories such as HelloDarwin and Sortlist.
| Agency | Positioning | Recommended projects | Key services |
|---|---|---|---|
| Stellar Projects Our pick | Growth-focused Shopify agency, SEO and automation | Ambitious redesigns, migrations, CRO, SEO, lifecycle | UX UI, build, Shopify SEO, Klaviyo, integrations |
| Axome | E‑commerce agency with strong execution capacity | Large-scale redesigns and multi-team projects | Shopify build, integrations, support |
| W3Lead | Shopify and email marketing, luxury and fashion focus | Migrations with conversion and brand identity stakes | UX, headless, POS, marketing automation |
| Unique Paris | Shopify Plus and international | Complex flows, multi-market, polished art direction | UX, integrations, ongoing operations |
For the full comparison of the 10 best Shopify agencies in France in 2026, with ratings, industry references and detailed profiles, see our comparison article on the best Shopify agencies in France.
For a more detailed read, our rated comparison of the best Shopify agencies in France covers each player with its rates and specialties. If your priority is organic acquisition, our overview of the best SEO agencies in Paris covers a neighboring field.
6. How much does a Shopify agency cost?
A good budget doesn't buy hours, it buys results. Our approach is to clarify the scope, prioritize what creates value immediately, and organize what follows in short cycles.
Factors that affect the price
- Functional scope: pages, sections, templates, product variants, facets, search
- Design level: adjusted premium theme vs. custom design (UX/UI and component systems)
- Integrations: ERP, PIM, CRM, OMS, POS, carriers, payment
- Data migration: products, customers, orders, 301 redirects, attribute cleanup
- SEO and content: architecture, internal linking, FAQ, structured data, copywriting
- International: Shopify Markets, i18n, hreflang, taxes, catalogs by country
- Custom apps: specific development and associated maintenance
- Quality & compliance: mobile performance, accessibility, GDPR, QA
Indicative ranges (initial build)
- €10,000 to €25,000 ("Boost" offer): modular premium theme, 6-8 key sections, essential on-page SEO, FAQ JSON-LD, minimal email setup
- €25,000 to €60,000 ("Scale" offer): custom UX/UI, full migration + redirects, advanced SEO and topic cluster, major email flows
- €60,000 to €150,000+ ("Premier" offer): international, Shopify Plus, critical integrations, custom apps, reinforced QA, extended security and governance
These ranges cover the initial build. Ongoing operations (maintenance, enhancements, A/B tests) are then priced as a monthly fee based on the desired velocity.
Items often forgotten in a quote
- Content preparation (copy, visuals, video) and associated rights
- Product data cleanup and normalization
- Conversion-oriented micro-copy (promises, proof points, FAQ)
- 301 redirect plan and switchover tests to preserve SEO
- Documentation, training, handover and post-launch support
- Operations budget (tests, optimizations, regulatory changes)
How to read (and compare) an agency quote
- Concrete deliverables: pages, sections, components, named integrations
- KPIs & milestones: goals per phase, acceptance criteria
- Assumptions & exclusions: what is in vs. out
- Team & governance: who does what, meeting cadence, SLA
- Switchover plan & hypercare: who monitors what, and for how long
We detail these elements in our dedicated guide: How much does a Shopify agency cost?
And if your project falls under the enterprise version, our Shopify Plus budgets detail the ranges by project type, including migration, B2B and headless.
Need a precise estimate? Talk to a Shopify expert: share your 90-day goal, your main constraint and the state of your store, and we'll come back with a one-page scoping proposal.
The item most consistently missing from quotes is maintenance. A delivered store is not a finished store: our article on Shopify maintenance and technical support details what this recurring budget really covers.
7. Where to find a Shopify agency?
The right question isn't just "where are they?", but "where can I find the right agency for my context?". Geographic proximity, time zone, language, knowledge of your markets… all of these matter as much as the portfolio.
Our directory (recommended starting point)
We maintain an up-to-date list of Shopify agencies by city and specialty: see the list of Shopify agencies. Filter by region, project type (migration, redesign, Shopify Plus, CRM/email) and industry references.
When to favor an agency near you
- Regular in-person workshops and co-design
- Logistics and retail: POS rollouts, in-store training, media shoots
- Non-technical teams: meeting in person helps remove friction during change management
When distance isn't a problem
- Performance-driven projects: conversion-first redesign, SEO, integrations and analytics
- Digital-first organizations: teams used to online rituals
- Rare specialty: Shopify Plus, headless or industry expertise that outweighs proximity
Cities with a high density of Shopify expertise
We have dedicated pages for each major city covering the local ecosystem, regional agencies and industry specifics: Paris, Lyon, Marseille, Bordeaux, Toulouse, Lille, Montpellier, Nantes, Brussels. Rennes, Strasbourg and other cities are covered in our national overview.
How to source quickly (5-step method)
- Start from our list of agencies to generate 6-8 candidates (filter by city/specialty)
- Ask for 1 case comparable to yours, with a client contact
- Set up a 20-minute call to validate method, team and rituals
- Send the same mini test brief to 3 agencies (same assumptions, same figures)
- Decide on speed of execution + clarity of the plan, not on price alone
Where we work
Our Shopify agency works across France and Europe with a hybrid model: in-person scoping and design at kickoff, then execution and follow-up through online rituals. Few meetings, lots of execution, clear reporting (conversion, SEO, email, performance).
8. How we scope an engagement
A good project starts with good scoping. Our method reduces uncertainty, picks an ambitious but deliverable MVP, and organizes what follows in short cycles. We avoid six-month tunnels that exhaust teams and budgets.
- A useful diagnostic: inventory of what exists, risks, assumptions, dependencies. Scope qualification and putting sensitive topics on the table.
- A realistic MVP: selecting the pages, sections and integrations that create the most impact. Everything else goes into a prioritized backlog.
- Clear rituals: a short review every week, a decision point every two weeks, a monthly impact report.
- An attention contract: we protect your time and ours. Fewer meetings, more tested iterations.
9. What we do for you
We don't sell a website, we build a growth lever. Our Shopify team focuses on ordering your priorities, delivering a high-performance theme, structuring your SEO, automating customer relationships and setting up simple performance management.
Strategic consulting and scoping
- KPI-driven quarterly roadmap
- Clear scorecard to decide without friction
- Clear trade-offs between useful effects and "wow" effects
- Tracked goals: conversion rate, net revenue, margin, LTV
Conversion-focused user experience (UX) and interface design (UI)
- Library of modular sections ready to edit
- Micro-copy that removes doubts in the right place
- Consistent empty states, errors and reassurance messages
Design serves your revenue, not the other way around.
Shopify build and controlled integrations
- High-performance, accessible theme
- ERP, PIM, CRM, OMS and POS integrations when useful
- Clear, reliable marketing data layer
- Deliverables: versioned repo, editing guide, mobile performance check
Managed Shopify SEO
- Topic cluster plan and editorial briefs
- Internal linking and FAQ JSON-LD
- Monthly optimization calendar
Details: our Shopify SEO service
Klaviyo CRM and marketing automation
- Essential flows up and running (welcome, abandonment, post-purchase, repurchase, winback)
- RFM segments and useful campaigns
- Continuous A/B tests on subject line, offer and creative
See: Klaviyo × Shopify
International and Markets
- Market-by-market roadmap
- International SEO localization (i18n) and hreflang tags
- Operating rituals by country
Custom apps when necessary
- KPI-driven specifications
- Monitoring and maintenance
- Impact measurement and return on effort
Performance, accessibility, compliance
- Performance and image budgets
- GDPR consent and security
- Targeted accessibility checks
Some of the brands we work with
Our portfolio includes Le Petit Olivier (DTC solid cosmetics), Bienaimé 1935 (niche perfumery in the Marais), Maroquinerie Renouard (high-end leather goods), PERS Skincare (premium skincare), Le Minor (iconic Breton fashion) and our in-house brand Cabania (cabin beds, €100,000+ in monthly revenue since 2025). This industry diversity gives us perspective on every new project.
Going further: What services does an e-commerce agency offer
Migration and redesign: our end-to-end service
Changing platforms or redesigning a Shopify site isn't just about pages and modules. It is a shift in focus: what must become simple, fast and understandable. Our Shopify agency specializing in migration secures the transition and uses it to clarify the offer, reduce noise, improve conversion and preserve SEO value.
The details of the method, and above all of the most costly mistakes, are in our guide to Shopify migration by an expert agency, starting with the redirect plan, too often left until last.
- Due diligence: technical and SEO audit, mapping of URLs and dependencies, realistic schedule
- Architecture and useful content: simple, scalable site structure, internal linking designed for SEO, editorial briefs
- Data and continuity: migration of products/customers/orders, tested 301 redirects, attribute cleanup
- Build and hypercare: documented high-performance theme, necessary integrations, 30-day hypercare
Learn more about an e-commerce migration to Shopify.
Our offers and engagement models
| Offer | For whom | What's included | Indicative budget |
|---|---|---|---|
| Boost | Launch fast and well, or relaunch a store that lacks momentum | Express audit, modular theme, on-page SEO, FAQ JSON-LD, 3 Klaviyo flows | €10k to €25k |
| Scale | Redesign with ambition and integrate your key tools | Custom UX UI, migration + redirects, advanced SEO and topic cluster, 6 Klaviyo flows | €25k to €60k |
| Premier | High-growth brands or Shopify Plus | International, custom apps, data-driven operations, governance and enhanced SLA | €60k to €150k+ |
| Retainer / Maintenance | Stores operated over the long term | Monthly velocity, rituals, SLA, shared impact dashboard | Quote on request |
Use cases at a glance
A few typical scenarios we handle regularly:
- Migration with SEO constraints: URL mapping, 301s, simplified site structure, useful FAQs. Typical result: organic traffic maintained and +15% conversions.
- Conversion-first redesign: less noise, clearer benefits, structured product sections, proof points and micro-copy. Typical result: +25% add-to-cart.
- Pragmatic lifecycle: welcome, abandonment, post-purchase, repurchase. Typical result: email's share of revenue rises from 10% to 25% in three months.
- Continuous improvement operations: one test, one learning, one improvement every month. Typical result: +10% cumulative revenue in six months.
10. Going further: topic cluster resources
This guide is part of a set of resources we maintain on the Shopify ecosystem. These pages and articles go deeper into the topics covered here and point to our Shopify agency for hands-on support.
📚 Stellar Projects guides & resources
If this guide has helped you clarify your expectations, the simplest next step is to write to us with three pieces of information: your 90-day business goal, your main constraint and a link to your store or mockup. We'll come back with a scoping proposal that fits on one page.