MX Development

Shipped work

Most of my work runs in production for clients of e-commerce agencies. I describe projects without naming names, but I'm happy to go deeper on a call.

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

Supplement brand (BE/international)

A from-scratch theme for a multi-market supplement brand

A complete custom theme built from scratch with Tailwind and Alpine.js: multi-market via Shopify Markets, three languages, a metafield-driven bundle/subscription selector and a fully custom PDP and cart drawer.

LiquidTailwindAlpine.jsShopify Markets

Specialty coffee brand

A coffee calculator that picks the right subscription for you

An interactive calculator in the theme: tell it how much coffee you drink, and a scoring engine compares strategies on price, freshness, coverage and shipping efficiency, landing on the exact variant and subscription plan to buy.

LiquidJavaScriptSelling PlansSection Rendering API

Footwear brand (US)

Turning a spreadsheet catalog into thousands of Shopify products

A footwear brand managing hundreds of styles × colorways × sizes in spreadsheets needed its catalog in Shopify without an army of interns. I built an embedded app that generates and maintains the whole parent/child product structure automatically.

Shopify AppNode.jsExpressReact

Entertainment group (NL)

Merch, tickets and live auctions in one custom theme

For a popular Dutch entertainment group I built a fully custom theme on Shopify's newest architecture: merch, tour agenda with ticketing, live product auctions with custom bid cards, Spotify integration and a press kit, all in one brand experience.

LiquidHorizon architectureTailwindJavaScript

Fresh food delivery brand (NL)

Custom cart & PDP that survive app updates, documentation included

For a fresh food delivery store: a custom two-column cart with free-shipping progress, a delivery-widget override that survives the app's own re-renders, and a metafield-driven PDP, all delivered with full handover documentation.

LiquidJavaScriptMutationObserverMetafields

E-commerce venture builder

An AI platform that tests product ideas before you buy stock

A platform that takes a product idea and spins up everything needed to test it with real traffic: AI-written landing pages, AI-generated ad creatives in every placement format, Shopify products and full-funnel tracking.

Next.jsOpenAIfal.aiShopify APIs

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.