Summary
✨ AI‑Generated
We are looking for a full-stack developer with deep Shopify expertise to own an e-commerce platform end-to-end. You will build custom applications, shape theme architecture, integrate APIs with production systems, and help turn the commerce platform into a central operating layer for a highly customized, on-demand manufacturing experience.
Highlights
Own a major e-commerce platform end-to-end and push the boundaries of custom commerce technology. The role combines custom application development, theme architecture, deep API integrations, and close connection to innovative manufacturing systems in a highly ambitious environment.
Description
Zellerfeld is revolutionising the footwear industry with the world’s first 3D-printing technology for fully customizable shoes.
Our goal is simple: printed shoes on every foot.
We’re a passionate team of engineers, designers, and innovators, questioning the status quo and disrupting traditional manufacturing processes.
Backed by founders, influencers, and celebrities who believe in our vision, we’re committed to making a lasting, positive impact—not just on the footwear industry, but on the world.
Your Mission
You'll be our go-to Shopify expert, pushing the boundaries of what the platform can do to build the world's most advanced on-demand manufacturing experience.
From custom app development and theme architecture to deep API integrations with our production systems, your work will transform our Shopify store into the central operating system behind Zellerfeld's vision of sustainable, custom-fit footwear.
You'll own the platform end-to-end — shaping both its technical foundation today and its headless future tomorrow.
What You'll Do
Build and maintain custom Shopify Apps that power our on-demand manufacturing, foot-scanning, and recycling programsArchitect and develop our Shopify theme using Liquid, JSON templates, and modern JavaScriptDesign integrations between Shopify Plus and our manufacturing systems, ERP, and logistics partnersDefine the platform's data architecture — Metafields, Metaobjects, and the structures that hold a non-standard product model togetherResearch and prototype a headless architecture as the next step in the platform's evolutionUse Shopify Functions and Flow to customize checkout logic and automate operational workflowsMonitor and optimize Core Web Vitals, speed, and conversion across the storefrontMentor other developers and establish Shopify best practices as the team grows
Your profile
Required
Proven ability to build, deploy, and maintain custom Shopify Apps from scratch — including Shopify CLI, OAuth, and webhooksDeep theme development expertise: Liquid, Sections, Blocks, JSON templates, and modern JS for interactive experiencesExpert-level work with Shopify's APIs — both Storefront (GraphQL) and Admin (REST and GraphQL)Strong React, JavaScript/TypeScript, and modern HTML/CSS fundamentalsArchitectural judgment: knowing when to reach for a theme change, a custom app, a Function, or a headless buildHeadless frameworks (Next.js, Remix, or Shopify's Hydrogen/Oxygen)As a company specializing in both hardware and software, we value close collaboration within our team.
Therefore, we are seeking candidates who can join us at our office in Hamburg.
Nice To Have
Hands-on experience with Metafields and Metaobjects for complex product/content modelingShopify Functions and Flow in productionCI/CD setup and managementPerformance tooling (Lighthouse, WebPageTest, browser profiling)Experience integrating Shopify with manufacturing systems, ERP, or fulfillment platforms
