MX Development

Freelance Shopify developer · Netherlands · EN/NL

I build what standard Shopify apps can't.

Product configurators, ERP integrations, automations and custom themes, built for e-commerce agencies that need a developer who ships, and for stores that outgrew their theme. Don't take my word for it: this site is the demo.

Psst: every CTA on this site feeds a real cart drawer. Try one.

Shopify ThemesShopify FunctionsShopify AppsCheckout ExtensionsLiquidReactNext.jsTypeScriptNode.jsTailwind CSSMongoDBGraphQLKlaviyoRechargeBusiness CentralLightspeedMollieStripeMeta CAPIShopify ThemesShopify FunctionsShopify AppsCheckout ExtensionsLiquidReactNext.jsTypeScriptNode.jsTailwind CSSMongoDBGraphQLKlaviyoRechargeBusiness CentralLightspeedMollieStripeMeta CAPI

What I build

Every service links to real, shipped work. Add what you need to your project. Yes, like a cart.

Product configurator

Custom product configurators for Shopify: made-to-measure pricing, live previews, dynamic product creation.

Automation

Custom Shopify automations: order flows, product syncs, scheduled jobs, Shopify Functions and Flow.

Integrations & APIs

Custom Shopify integrations with ERP, POS, PIM and any API: Business Central, Lightspeed, Klaviyo and more.

Custom themes

Custom Shopify themes built from scratch or heavily customized: bespoke sections, custom PDPs, cart drawers, multi-market setups.

Figma to Shopify

I turn Figma designs into pixel-perfect, fast Shopify themes and sections.

App development

Custom Shopify apps for one store or many: admin tools, theme app extensions, app proxies, checkout extensions.

Headless Shopify

Headless Shopify builds with Next.

Store overhaul

Store making money but built on a messy, slow, outgrown theme? I audit, clean up and rebuild Shopify stores without breaking what works.

50+

e-commerce projects delivered

10+

years building for the web

100%

hands-on: you talk to the developer

Recent work

Most projects ship under agency flags or NDAs, so no logos, just what was actually built.

Made-to-measure brands · via agency

Made-to-measure configurators for three Shopify stores

Three webshops selling made-to-measure products, each with completely different measurement and pricing rules, needed real add-to-cart flows instead of quote requests. I built React configurators with CSV-driven price engines and a shared multi-store backend.

ReactViteTailwindExpress

B2B wholesale brand · via agency

Business Central ↔ Shopify: B2B contract pricing on autopilot

A B2B store where every customer has negotiated contract prices living in Microsoft Dynamics 365 Business Central. I built the integration that keeps thousands of customer-specific prices correct in Shopify, automatically. And it runs entirely without Shopify Plus, on a plan that officially doesn't support per-customer pricing at all.

Node.jsBusiness Central APIOAuthShopify Admin API

Made-to-measure manufacturer · via agency

WooCommerce → Shopify without touching the factory's software

A manufacturer wanted to move from WooCommerce to Shopify, but their production-planning application, deeply wired into the WooCommerce API, could not be rebuilt. I designed a middleware that speaks WooCommerce to the factory and Shopify to the world.

Node.jsShopify Admin APIWooCommerce APIWebhooks

Personalized gifts brand

AI image generation + print-on-demand, inside Shopify

A storefront experience where customers upload a photo, AI turns it into artwork, and the result is ordered as a printed product, fully automated from upload to fulfillment via a custom Shopify app.

Shopify AppApp ProxyTheme App ExtensionExpress

European supplement brand (NL/DE/UK)

Scaling a subscription brand: custom portal, Functions & 670-section theme

Long-running development for a fast-growing subscription supplement brand across three markets: a custom subscription portal replacing Recharge's default, Shopify Functions for discount logic, a checkout UI extension and a huge multi-market theme system tuned for paid traffic.

ReactRecharge APIApp ProxyShopify Functions

Community & education brand

A headless membership platform on Shopify

A brand whose product is really a community: masterclasses, onboarding journeys and an affiliate program. Built as a headless Next.js platform with Shopify handling commerce underneath.

Next.jsShopify Storefront APIShopify Admin APIMongoDB

Why stores and agencies keep coming back

One developer, senior level, no overhead

You talk directly to the person writing the code. No account managers, no junior handoffs, no telephone game between you and the build.

I've probably built it before

Configurators, ERP syncs, subscription portals, checkout logic, AI product tools: 50+ projects mean your 'weird edge case' is usually familiar territory.

Code your next developer will thank you for

Documented handovers, theme-editor-friendly sections, no lock-in. I build like someone else will maintain it, because someday, someone will.

Quick answers

How much does a Shopify product configurator cost?+

It depends on pricing complexity, previews and admin needs. A focused configurator is typically a few weeks of work; multi-product or multi-store platforms take longer. You'll get a fixed, scoped quote before anything starts.

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Can you connect Shopify to our ERP or backoffice system?+

Almost certainly. If your system has any kind of API (modern REST, SOAP, or even CSV exports), I can build a reliable sync. I've connected Shopify to Microsoft Business Central, Lightspeed POS and several legacy systems.

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Do you work white-label for agencies?+

Yes. A large share of my work is exactly that: agencies hand me designs or specs, I deliver the build. Your client never has to know I exist; I work in your tools under your flag.

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Custom theme, custom app, or an app-store app: what do I actually need?+

Rule of thumb: visual and content changes → theme; new functionality for your store only → private app or theme customization; functionality tied to checkout/discounts → Shopify Functions. A good app-store app beats custom when it genuinely fits.

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Tell me what you're stuck on.

A 30-minute intro call is free, honest and concrete: you'll leave knowing whether it can be built, roughly what it takes, and whether I'm the right person. No pitch deck, no pressure.