Leave your Liquid theme or legacy CMS behind. Go Hydrogen headless.

I migrate e-commerce stores to Shopify Hydrogen headless, from a standard Shopify theme or from a CMS like PrestaShop. Performance, design freedom, zero tech debt.

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Portrait of Clément Martinelli, e-commerce engineer specializing in Shopify Hydrogen
€12M
Revenue generated
50K+
orders processed
€430K
equity raised
10
people managed

Two starting points, one goal: headless

YOU'RE ON SHOPIFY

Migrate to Hydrogen headless

Core Web Vitals hurt by third-party apps
App stack bill climbing every month
Design boxed in by theme limits
Product roadmap slowed down by Liquid
See the Shopify → Hydrogen path →
YOU'RE ON PRESTASHOP / ANOTHER CMS

Migrate to Shopify + Hydrogen

Maintenance and security eating your time
Limited hosting and scalability
Tech debt slowing every new feature
Checkout far from Shopify’s (best-in-class for conversion)
See the CMS → Shopify path →

Why Hydrogen

Native performance

Remix/Oxygen architecture built for speed, not a theme weighed down by apps.

Total design freedom

No theme constraints: every pixel and interaction is custom-built.

Shopify stays the back office

Your team keeps the Shopify admin they already know. Operations stay unchanged.

Catalog-scale ready

Built for large catalogs, ERP integrations, and international growth.

An engineer who has run an e-commerce business, not just a website developer

Engineer, CTO and co-founder of Limited Resell (sneakers & streetwear, €12M revenue). Repricing, logistics, marketplaces, infra: I designed and ran the whole system, with margin pressure and Sunday-night fires. When I migrate a store, I see product, ops and engineering as one, not just the front end.

See Limited Resell →

CTO & Co-Founder

2021 – 2026

Limited Resell

  • Homegrown ERP for stock, orders and billing€12M GMV
  • Shopify app + sync with Decathlon, Spartoo, Sarenza…
  • Supplier portal and order intake6,000+ partners
  • Automated catalog repricing+8000 products synchronized

Methodology

01

Audit

Data analysis (GA4/Clarity) + mockups before any development.

02

Staged build

Hydrogen storefront development against the agreed scope.

03

Zero-downtime migration

DNS cutover and SEO redirects designed for zero downtime.

04

Ongoing support

Post-launch follow-up to tune performance and conversion.

Case studies

SHOPIFY LIQUID → HYDROGEN

Sneaker & streetwear e-commerce

Migration from a standard Shopify theme to a headless Hydrogen storefront, with technical SEO and Core Web Vitals rework.

26→70+
Mobile PageSpeed
+35%
Mobile checkout

Full data audit, storefront rebuild, SEO redirects and post-launch conversion tracking.

PRESTASHOP → SHOPIFY + HYDROGEN

Furniture & home décor

Full PrestaShop replatforming for a furniture and home décor e-commerce, with a custom ERP and real-time catalog sync.

440
categories migrated
real-time
ERP sync

Oxygen + Next.js/Supabase ERP architecture, n8n automation, collection hierarchy and metafields preserved for a rich furniture catalog.

FROM SCRATCH → SHOPIFY + HYDROGEN

B2B personalized textiles

Built from scratch a Shopify Hydrogen store for textile and promo-product personalization, with a project-specific front end (configurator, catalog, quoting flow).

sync
supplier catalog
100%
custom front end

Custom Hydrogen storefront, catalog sync and configuration flows tailored to the business — not a generic theme.

FAQ

Some front-end apps get replaced by native Hydrogen code; back-office apps (accounting, fulfillment...) stay unchanged.

4 to 12 weeks depending on tier, from audit to migration.

Yes, redirects, URL structure and structured data are audited and reproduced before cutover.

They're audited then reconnected or rebuilt based on criticality, with real-time sync if needed.

Let's talk about your migration

Describe your current site and your goal. I'll get back to you with an initial diagnosis within 48h.

Or email me directly

Reply within 48h · no commitment