Hans Joosep T.

Shopify Developer | Custom Apps, Integrations & Premium Storefronts

I build the Shopify systems that standard themes and off-the-shelf apps cannot handle: custom storefronts, embedded apps, product personalization, API integrations, and reliable backend workflows. Most of my projects start where ordinary theme customization stops being enough. The business may need a live product preview, a custom customer account experience, embedded analytics, complex cart rules, a dependable print-on-demand workflow, or a complete storefront rebuild that still remains easy for the internal team to manage. My job isn't only to make the interface look right. I take ownership of the entire flow, from architecture and UX through Liquid, JavaScript/TypeScript, React, Shopify APIs, Node/Python services, databases, testing, deployment, and handover. Recent work includes: - An art-commerce platform with a custom discovery experience, artist and artwork pages, saved and followed content, customer accounts, notifications, and an authenticated Shopify app backed by PostgreSQL. - A personalized children's-book system with live name previews, print-ready rendering, QR audio, cart upsells, Shopify webhooks, and Printify fulfillment. - Premium Shopify storefront rebuilds from design references and working prototypes, including custom sections, product and collection architecture, localization, cart flows, and responsive QA. - Shopify-Printify automation for order recovery, tracking, fulfillment synchronization, retry handling, and production-safe API communication. Clients usually bring me in when they need more than isolated theme edits: a developer who can understand the commercial goal, make sound technical decisions, care about the interface, and stay accountable through production. I'm a strong fit for: - Custom Shopify features and embedded apps - Storefront rebuilds and complex theme architecture - Product personalization, bundles, and upsells - Shopify API, POD, and third-party integrations - Debugging, stabilization, and ongoing platform development You work directly with me from scoping through launch. I communicate clearly, document what I build, and keep the implementation maintainable for the next phase. I'm Top Rated on Upwork with 100% Job Success, $20K+ earned, and clients who consistently highlight clear communication, collaboration, quality, and attention to detail. If your Shopify project is too custom for an off-the-shelf app and too important for a quick patch, send me the current setup and the outcome you need. I'll give you a clear view of the cleanest path, the risks, and the scope required to ship it properly.