Justin Cappelle
Ecommerce website development
Ecommerce website development in Switzerland, built to sell.
Shopify and WooCommerceConversion rate optimisationSwiss payments (TWINT)
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Web engineering that drives your revenue
Your online shop is the heart of your digital business. It can't afford any friction at checkout, or a single second of extra load time.
01
Lightning-fast load times
Amazon calculated that one second of latency costs 1.6 billion a year. On mobile, a slow site kills the sale. I use modern architectures (Next.js, edge CDN) to keep load times under a second, so impulse buyers stay and buy.
Headless architecture
Core Web Vitals optimisation
Advanced caching
02
An optimised checkout
I track down and remove every point of friction in the buying journey. The payment methods Swiss shoppers prefer (TWINT, PostFinance, Apple Pay), clear delivery options and order forms cut to the bare minimum.
Swiss payments built in
Fewer abandoned carts
Checkout A/B testing
03
UX and UI design built for conversion
Online, people don't buy a product, they buy how it looks. I design immersive pages that show your products at their best: large images, embedded video, readable type. Every button and every contrast is there to guide the eye towards the purchase.
High-end visual identity
Immersive photos and video
Clear call-to-action buttons
04
ERP sync and automation
A growing online shop can't be run by hand. I connect your store to the rest of your stack: automatic stock sync with your POS software, orders sent straight to logistics, and automated accounting invoices.
APIs and webhooks
Winbiz and Odoo integration
Automated workflows
Get a full audit of your website
I review your website myself, for free: loading speed, SEO, design and conversion path. You get a tailored report by email, showing what is holding you back and how to fix it. No commitment, and no sales follow-up afterwards.
1
Your website2
Your emailA full redesign, with a direct impact on sales.
Moving an old, slow catalogue to a modern custom architecture. The goal was to cut mobile cart abandonment sharply and raise the average order value with smart product recommendations.
- Mobile load time down from 4.2s to 0.8s
- One-click checkout (TWINT, Apple Pay)
- Algorithmic cross-selling and upselling
- Two-way stock sync with the physical shop
What your shop is optimised for
More sales
Mobile conversion rateMobile-first
Average order valueCross-selling
Cart abandonmentSmooth payment
A sales machine,
tuned to the last detail.
In ecommerce, every detail counts. A badly placed button, a heavy image or a confusing checkout turns straight into lost sales. Your shop has to work flawlessly.
01
Wipe out cart abandonment
Checkout should be a motorway. I build frictionless checkouts with local payment methods (TWINT, PostFinance) and express wallets (Apple Pay, Google Pay).
- Express one-click checkout
- Automated abandoned cart reminders
Secure checkout
Total due
CHF 249.00
Credit card
TWINT
Pay in one clickGoogle Shopping | In stock
Trending
(342)
Swiss automatic watch, limited edition
CHF 2,450.00 CHF 2,800.00
02
Ecommerce SEO and customer acquisition
Your catalogue has to show up when customers search for your products. I structure your product pages, categories and rich snippets (Product schema) to rank at the top of organic search and Google Shopping.
- On-page SEO for product pages
- Top speed (Core Web Vitals) for SEO
Grow your
online sales.
Having an online shop is no longer enough. Your customers compare, expect a lot, and leave at the first sign of slowness. Hiring me as your freelance ecommerce developer (Shopify, Next.js, WooCommerce) means getting a digital asset that looks great, runs reliably and outperforms your competitors technically. I work with you from customer acquisition strategy through to post-purchase loyalty.
Shopify and WooCommerceHigh-end UX and UI designSEO and Google ShoppingSwiss payments (TWINT)Extreme speedERP automation
+20
5.0
100% satisfied clientsWhy an off-the-shelf shop
is no longer enough.
Most online shops run on slow themes, bloated with plugins they don't need. The result is a poor mobile experience and visitors who leave. Shoppers now expect lean platforms where every line of code serves speed and conversion.
Shopify and WooCommerce architecture
I build ultra-fast custom themes. You get the speed of a high-end, dependable interface, with a catalogue manager (CMS) your team can run easily in-house.
Scalability and B2B growth
Foundations built for growth: advanced price lists, specific delivery rules for your resellers, and room to add ERP and POS sync.
What a shop built to sell includes
- High-performance architecture (ultra-optimised theme)
- One-click checkout (TWINT, Apple Pay)
- Automated upselling and cross-selling
- Conversion-focused UI design (CRO)
- Easy-to-use back office (Shopify, WooCommerce)
Starting budgetFrom CHF 3,500
Real projects,
measurable results.
Every website is custom built around a real business need: it has to look good, earn trust and, above all, perform well enough to bring in results.
Au Koala Zen
A full redesign for Au Koala Zen, a gentle osteopathy and therapeutic massage practice in Penthalaz. New brand guidelines, a custom WordPress theme, on-page SEO rebuilt from scratch and a built-in blog.
WordPressCustom themeSEO
NORA Immobilier
A new website for NORA Immobilier, a close-knit property management firm in Nyon. Custom WordPress build, digital identity created with Immosprint and listings synced from the property CRM.
WordPressProperty CRMCustom build
FLAA architectes associés
A full redesign for FLAA, an architecture firm in Bussigny and Lausanne. Hand-coded WordPress theme, carefully crafted animations and projects shown at their best. Delivered in partnership with Immosprint.
WordPressCustom themeArchitecture
Régal'Animals
A full redesign of Régal'Animals, an online shop specialising in food for dogs, cats and ferrets. New WooCommerce store, restructured catalogue and a checkout built to convert.
WooCommerceWordPressE-commerce
Get your shop ready for traffic spikes.
Black Friday, the festive season, a TV feature. Your site can't afford to crash. Solid ecommerce infrastructure absorbs the traffic and stays smooth for every single visitor.
High availability
Scalable cloud hosting and fast CDNs for 99.9% uptime.
Re-platforming
Migration from older platforms (Magento, PrestaShop) to Next.js or Shopify, with no loss of SEO.
Ecommerce performance
Solid infrastructure
A fast, reliable online shop that can keep up as your brand grows.
Tell me about your project,I'll handle the rest.
Describe what you need in a few clicks. I'll get back to you within 24 hours with a personal analysis and a free quote.
Association Artémont
Concerts and cultural events
“Justin brought together creativity, responsiveness and technical expertise to build a website that lives up to our standards. He listened, he was flexible, and the result is flawless. We will be calling on him again for our next projects without a second thought.”
Nathanaël B.
Alpura Lodges
“A modern, smooth website that is completely true to our image. Justin listened at every stage, came up with relevant ideas and delivered work of exceptional quality, on schedule. A serious, creative and passionate developer.”
Joel Lopez
ImmoSprint
“Impeccable work of flawless quality. Justin designed a website that matches our vision exactly, while bringing his own technical and creative expertise. The result: a professional, modern and extremely fast website.”
Romain B.
Leedy
“Available, committed and attentive, Justin built a website that goes beyond what I expected. He took the time to understand my needs and delivered a beautiful result, on time. I highly recommend him to anyone looking for a real professional.”
Association Artémont
Concerts and cultural events
“Justin brought together creativity, responsiveness and technical expertise to build a website that lives up to our standards. He listened, he was flexible, and the result is flawless. We will be calling on him again for our next projects without a second thought.”
Nathanaël B.
Alpura Lodges
“A modern, smooth website that is completely true to our image. Justin listened at every stage, came up with relevant ideas and delivered work of exceptional quality, on schedule. A serious, creative and passionate developer.”
Joel Lopez
ImmoSprint
“Impeccable work of flawless quality. Justin designed a website that matches our vision exactly, while bringing his own technical and creative expertise. The result: a professional, modern and extremely fast website.”
Romain B.
Leedy
“Available, committed and attentive, Justin built a website that goes beyond what I expected. He took the time to understand my needs and delivered a beautiful result, on time. I highly recommend him to anyone looking for a real professional.”
Yann Wegmüller
Chantemerle
“Meticulous, reliable work with excellent value for money. Justin delivers exactly what he promises, on time and with no unpleasant surprises. A dependable, rigorous developer. I recommend him without any hesitation.”
Yann Chaplet
Trio De Turismo
“Justin built our website to perfection. He respected our wishes while bringing his professional touch and sound advice. The result goes beyond our expectations. Excellent service, I recommend him without the slightest hesitation.”
Reviews translated from French
Common questions about online shops
Can't find what you're looking for? Get in touch directly, I always reply within 24 hours.
Get in touchIt depends on your business model. Shopify is excellent for a fast launch and a standard catalogue. WooCommerce suits custom shops that need very specific features tied to WordPress. For B2B catalogues or high volumes, I go for a headless setup (Next.js paired with a back office).
Conversion comes down to zero friction. We optimise load time (under 1 second), rethink the payment funnel (a stripped-down checkout with Apple Pay and TWINT) and add trust signals (verified customer reviews, a clear returns policy).
Yes. A high-performing online shop is connected to the rest of the business. I can build custom API integrations to sync your stock in real time between your physical shop, your ERP (Odoo, Winbiz) and your ecommerce site.
Absolutely. Before any redesign, I offer a performance audit. Sometimes, rather than rebuilding everything, optimising the existing code, moving to a faster dedicated cloud server and compressing media is enough to double sales.
An optimised, turnkey Shopify store starts at around CHF 3,500. For complex projects (custom WooCommerce, headless ecommerce, B2B with multiple price lists, ERP integrations), the budget depends on the brief, usually between CHF 6,000 and CHF 15,000.
Technologies and specialities
The areas I know best for building custom websites, interfaces and apps.