Haruto Sato

I've built and scaled e-commerce platforms, custom Shopify applications, and cloud web systems for more than six years.

At B2BGateway, I contributed to the Tesco Supplier Portal, upgrading B2B ordering and invoicing workflows for enterprise suppliers across Ireland and the UK. I supported integrations between Tesco and supplier networks, along with testing, debugging, and deployment for reliable portal operations.

At Subscribfy, I built merchant-facing subscription flows in an embedded Shopify admin app and developed loyalty features spanning configuration, tiers, rules, coupons, analytics, and data hooks. I also refreshed screens using Polaris patterns to make merchant tasks more consistent and easier to complete.

Earlier, I customized a luxury Shopify store for Kazumasa Kawasaki, translating creative concepts into responsive storefront UI and managing products, collections, and core e-commerce configuration. I enjoy connecting Shopify experiences with the systems that power payments, logistics, CRM, and ERP workflows.