Shopify Developer
I help teams build and improve Shopify stores. This includes theme development, custom features, migrations, integrations, and ongoing technical support.

From one-off builds to ongoing technical support.
Building and customizing Shopify themes that match the brand and keep the store fast and easy to maintain.
Developing store functionality such as product logic, advanced filters, automations, and custom storefront behavior.
Moving stores to Shopify from platforms like PrestaShop or WooCommerce while keeping data, SEO rankings, and uptime intact.
Building custom Shopify apps when existing apps cannot solve the problem or when deeper integration is needed.
Bug fixes, performance improvements, and ongoing technical support for agencies.
Advice on Shopify architecture, integrations, performance, and choosing the right technical approach for a project.
Projects delivered for agencies and brands.






What clients and partners say about working together.
"I gave Matthias several technical tasks and he delivered on every one. From a custom loyalty program to automated PDF invoices and bug fixes, he improved the experience on my site. He is professional, responsive, and I would happily work with him again."
"I have worked with Matthias on several Shopify projects and the experience has always been excellent. He understands both the technical side and the business side of e-commerce, and he consistently proposes solid solutions."
"Matthias helped improve the technical structure of my store, optimized SEO, and handled several integrations. Professional, responsive, and easy to work with."
A simple process from first conversation to delivery.
We discuss the goals of the project and any constraints. I review the current setup and outline the technical approach and timeline.
You receive a detailed proposal with a clear scope of work and realistic timeline. Once approved, development begins.
I build following Shopify best practices. You receive updates along the way and can request adjustments if needed.
Testing and deployment are handled carefully. I can also walk your team or your client through what was built and remain available for future improvements.
I am a Shopify developer with a background in software engineering. For the past few years I have focused entirely on Shopify development. I work with agencies and brands on theme builds, custom features, and technical improvements.
Many of my projects involve collaborating with agencies as their Shopify development partner. I try to keep communication clear so projects move forward smoothly.