Coddy
Urban escape games
An online shop that's fast , found and free of sales commissions .
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
+1
Selling online in Belgium doesn't mean handing a cut of every transaction to Shopify. As an e-commerce developer in Brussels, I build custom online shops that are entirely yours — no monthly platform subscription, no commission on your sales. Using Snipcart for lighter catalogues or Medusa.js for advanced shops, your store is fast, visible on Google and includes the local payment methods that matter — Bancontact first. Whether you sell physical products, digital goods or services, a high-performance site paired with a catalogue your team manages independently gives you a clear edge over generic platforms. And if you want to rank on Google ahead of your competitors, SEO and GEO are integrated at code level — not added as an afterthought.
What's holding your online shop back
A slow checkout is killing your conversions.
A sluggish checkout, too many steps, a design that doesn't inspire trust — and the buyer abandons their cart. In Belgium, if Bancontact isn't offered, you lose more than half your potential conversions before the confirmation page even loads.
Platform fees grow with your success.
You sell more. Shopify charges you more. Transaction commissions, an ever-climbing subscription tier, essential plugins at €30/month each — your margins erode at exactly the moment they should be improving. That's the SaaS platform paradox.
Your product pages are invisible on Google.
Hundreds of product pages with no structured markup, duplicate URLs, unoptimised images — Google doesn't understand what you're selling. Result: your competitors rank on your keywords, and you spend on advertising to compensate for organic visibility you could have for free.
The mobile experience discourages buying.
60% of online purchases happen on mobile. If your shop takes 4 seconds to load on a phone, if buttons are too small, if the payment form is poorly adapted — the buyer leaves. And they don't come back, even if they genuinely wanted what you were selling.
Does this sound familiar?
25 minutes to assess your e-commerce situation and identify quick wins. Free, no commitment.
What I build for your online shop.
Custom e-commerce — Snipcart or Medusa.js, zero commission.
For light to mid-range shops, I integrate Snipcart into your ultra-fast site: product catalogue, variant management, optimised checkout. For more ambitious projects — multi-currency, vendor portal, advanced business logic — I develop with Medusa.js. In both cases, you pay once for the build, not on every transaction.
Product catalogue managed via CMS — no developer needed.
Adding a product, updating a price, editing a description — your team handles it independently from an interface built for non-developers. The catalogue is structured around your actual categories, with the fields you need. Not a generic template.
Payment integration — Bancontact, Stripe, PayPal.
I integrate the payment methods that matter on the Belgian market: Bancontact first (50%+ of online transactions in Belgium), Stripe for international cards, PayPal, Apple Pay and Google Pay. For B2B, I can also integrate deferred payment solutions (Klarna, Alma) or automated SEPA bank transfers. PSD2 compliance and 3D Secure included.
Inventory management and order automation.
Automatic order notifications, stock level management, confirmation and shipping emails, logistics synchronisation — every step of the order cycle can be automated. Fewer manual tasks, fewer errors, more time to sell. I apply the same automation logic I use for my international-scale projects.
Your shop deserves better than a template.
Let's talk about your e-commerce project. I'll show you how to build a shop that's truly yours — no commission, no platform subscription.
Coddy: automated payments across 9 countries, zero human intervention.
Coddy runs urban escape games across 9 European countries. I designed and built the entire booking and payment system: a visitor arrives on the site, picks their escape game, books, pays and receives their instructions — with no human involved at any step. Hundreds of thousands of transactions processed automatically, across multiple currencies, with the local payment methods of each market.
That's exactly the logic I apply to the online shops I build: every step of the purchase journey is designed to convert, every payment integration is tested to never block a transaction. User experience is not an option — it's what separates a shop that sells from a shop that merely exists.
— Sébastien, founder of Coddy and Numinam
What clients who worked with me have to say.
Real feedback, not generic quotes.
Sébastien is always attentive and understood our needs perfectly when it came to redesigning our website! The new site looks great and was delivered on time. We've already gained a few customers thanks to the improved SEO of the new site 🤩
Didier Boulvin
C3PO • Coddy
Numinam's contribution to the development of our App has been significant in its success with our B2C and B2B customers.
Stephane Draux
Founder • Spengo
Numinam (One More Pixel) is doing a fantastic job for Euronet. They’ve started the mission in saving our web-site from a cyber-attack. We had lost a lot of information and they had to rebuild our web-site. They had to recover the data left on our…
Valérie Van Belle.
Managing director • Euronet
Sebastien helped lifting Zetes' digital activities to a higher level, [...], a project successfully managed from design to development.
Joke Aerts
Marketing Director • Zetes
Numinam's technical and design vision has enabled us to improve our lead generation flows. A big step forward.
Jérôme Van De Sande
Product & Data Leader • Heat Me
Numinam has completely modernized our website. The design is clearer, more credible, and our visitors understand what we do. A real leap in quality. Also worth noting is the excellent collaboration between Numinam and our development agency. Thank…
Olivier Lafosse
Founder & CEO • Heat Me
It was a real pleasure to do business with Sebastien. He did a great job and transform our inefficient and boring website to a nice one that generate leads. Moreover, Sebastien is a patient and reliable partner and he's always ready to help.
Shirley Boterdael
Marketing & Com. Manager • Highcodata
Frequently asked questions — custom e-commerce website in Brussels
How much does a custom e-commerce website cost at Numinam?
The cost of a custom e-commerce website depends on the scope: number of products, payment integrations, inventory management system and the level of automation required. A shop built with Snipcart (simple catalogue, Stripe/Bancontact payment, up to a few hundred products) starts at around €5,000 to €8,000. A more advanced e-commerce site with Medusa.js — multi-currency management, vendor portal, order automation — represents an investment from €16,000. In all cases, there are no sales commissions and no monthly subscription to a third-party platform. A 30-minute call is enough to scope your requirements and provide a precise estimate.
How long does it take to deliver an e-commerce website?
An online shop built with Snipcart (product catalogue, integrated payment, order management) is delivered in 4 to 6 weeks. A more complex e-commerce project — dynamic catalogue, multi-stock management, ERP integrations or advanced automation — requires between 10 and 16 weeks. The timeline depends directly on functional complexity and the speed of your sign-offs. The wireframe and validation phase runs before development: what you approve is what gets built.
Why choose Snipcart or Medusa.js over Shopify?
Shopify is a convenient way to get started quickly, but its business model becomes problematic as you grow: sales commissions (0.5% to 2% depending on the plan), a monthly subscription that climbs with features, and no real ability to customise deeply without going through their ecosystem of paid plugins. With Snipcart or Medusa.js, you pay zero commission on your transactions — your margins stay intact. The code is 100% yours, you can host it wherever you choose and evolve it without depending on a third-party platform. For a Belgian shop targeting growth, the 3-year calculation consistently favours a custom solution.
Which payment methods can I integrate on my online shop?
I integrate the main payment solutions suited to the Belgian and European market: Stripe (Visa, Mastercard, American Express), Bancontact (essential in Belgium — accounting for over 50% of online transactions), PayPal, as well as Apple Pay and Google Pay for an optimal mobile experience. For B2B markets, I can also integrate deferred payment solutions (Klarna, Alma) or automated SEPA bank transfers. All integrations comply with PSD2 standards and 3D Secure two-factor authentication.
Will my e-commerce site rank well on Google?
SEO for e-commerce is a topic in its own right. I handle native technical SEO from the development phase: clean canonical URLs for each product and category, Schema.org structured markup (Product, Offer, BreadcrumbList), dynamic XML sitemap, OpenGraph tags for social sharing, and optimised load times (PageSpeed 95+). Product pages and category pages are designed to be both readable by Google and optimised for conversion. I can also support you with a full SEO/GEO strategy to position your shop on high-commercial-intent queries in your sector.
What happens if you are no longer available for my project?
This is a legitimate question I encourage you to ask any provider. Here is how your project is protected: the complete source code of your shop is hosted in your own Git repository (GitHub, GitLab or Bitbucket) — you own it from day one. Secure access is shared with trusted associate developers who know my technical stack. The project is built with standard open-source technologies (Astro, Snipcart, Medusa.js, Node.js) — any experienced developer can take over without a long onboarding period. Technical documentation is provided at delivery. In practice, your shop does not depend on my personal availability — it depends on well-written code and access that you control.
Our services for e-commerce
Articles you might find useful
Price
How much will an e-commerce site cost in Belgium in 2026?
Price of an e-commerce site in Belgium in 2026: €5,000 to €60,000 depending on complexity, integrations and product volume. Shopify, WooCommerce, Astro comparison.
Optimisation
Conversion Optimization (CRO): How to increase your leads and sales in 2026
Discover how to increase your conversions by 20 to 200% with CRO: UX, copywriting, performance, data, A/B testing. Complete guide for SMEs and Belgian companies.
Our solutions by industry
SaaS & Tech Products
Web developer for SaaS in Brussels
Custom SaaS marketing site in Brussels. Optimised conversion funnel, SEO feature pages, pricing page that guides to the right plan. The site that grows your MRR.
Learn moreHoReCa & TourismWebsite for HoReCa and tourism in Brussels
Website for restaurants, hotels and tourism businesses in Brussels. Commission-free online booking, interactive menu, local SEO, multilingual. The site that fills your tables and your rooms.
Learn more
Your online shop should work as hard as you do.
25 minutes to analyse your e-commerce situation and identify immediate wins — in conversion, visibility and automation. We review your checkout flow, your product SEO, your mobile experience and your pricing strategy.
You leave with a clear diagnosis and a concrete action plan. Free. No commitment. With Sébastien — Numinam founder, full-stack developer with over 10 years of experience — not a salesperson.