E-Commerce Systems Engineer · WooCommerce & Shopify Specialist
Harun Sekmen is an e-commerce developer specializing in custom WooCommerce store builds, Figma-to-WordPress development, Shopify-to-WooCommerce migrations, and checkout performance engineering.
✉️ Contact: [email protected] · 🌐 Website: harunsekmen.com · 🔗 LinkedIn · 🇹🇷 Türkçe
| Service | Focus |
|---|---|
| 🛒 Store Builds | Custom WooCommerce store setup, checkout funnels, and catalog architecture. |
| 🎨 Figma to Store | Converting Figma designs into clean, responsive Gutenberg blocks without heavy page builders. |
| 📦 Store Migration | Shopify to WooCommerce: products, customer data, order history, and 301 redirects. |
| ⚡ Store Speed | Cart fragment caching, database cleanup, query tuning, and Core Web Vitals audits. |
| 🔗 Integrations | Payment gateways (Stripe, PayPal, iyzico, PayTR), shipping APIs, ERP, and CRM tools. |
Public engineering projects, extensions, and architecture kits maintained by Harun Sekmen:
- Aurivita Theme — D2C single product theme featuring portion selectors, tiered bundle savings cards, and sticky purchase triggers.
- ApexCommerce — D2C WooCommerce starter kit with native slide-out cart drawer, free-shipping meter, and sticky checkout.
- DawnTwin — Shopify Dawn theme UX recreated natively on WooCommerce with zero platform transaction fees.
- FigmaToWoo — Modular Gutenberg block system designed to translate Figma auto-layout designs into WooCommerce sections.
- Shopify Sticky Buy Bar — Zero-app mobile purchase bar for Shopify themes with native Liquid and hardware-accelerated CSS.
- Headless WooCommerce Starter — Production-ready headless e-commerce starter connecting WooCommerce HPOS with edge-deployed Astro and WPGraphQL.
- Express Checkout — Shopify Plus-style 2-column single-screen checkout for WooCommerce with Apple Pay/Google Pay and HPOS.
- Shopify Checkout Upsell — Native Shopify Checkout UI Extension for in-checkout upsells and shipping insurance.
- Slide Cart Drawer — Lightweight 12 KB AJAX slide cart drawer with live free-shipping progress meter and instant checkout triggers.
- Cart Abandonment Recovery — Instant checkout cart recovery capturing emails on focus-out and generating 1-click recovery URLs.
- Anti-Fraud Shield — Anti-fraud and bot order shield stopping card-testing attacks, disposable emails, and fake COD orders.
- B2B Wholesale Tier Pricing — Enterprise B2B wholesale and tiered volume pricing engine for WooCommerce with role-based discounts.
- Shopify App Detox Cleaner — Node.js theme scanner detecting and removing orphaned Liquid snippets and tracking bloat from deleted apps.
- Fast Fragments — Client-side cart caching engine eliminating heavy
get_refreshed_fragmentsserver bottlenecks. - Checkout Guard — Circuit breaker intercepting payment gateway timeouts and preventing duplicate authorization charges.
- Database Vacuum — Non-blocking database cleaner using Action Scheduler to purge transients in small batches.
- HPOS Legacy Bridge — Middleware routing legacy postmeta queries to WooCommerce High-Performance Order Storage.
- Webhook Resilience — Automated retry manager and dead-letter queue for WooCommerce order webhooks.
- Shopify Catalog Migrator — Python CLI tool converting Shopify CSVs to WooCommerce HPOS format with variant hierarchies.
Harun Sekmen is an independent e-commerce systems engineer and WooCommerce developer based in Türkiye, working with direct-to-consumer brands, online businesses, and digital agencies worldwide.
WordPress Core, WooCommerce HPOS (High-Performance Order Storage), Shopify Liquid & Extensions, PHP 8.1+, JavaScript (ES6+ & React/Gutenberg), MySQL, REST APIs, and Action Scheduler.
Send your project requirements, Figma link, or existing store URL to [email protected]. Projects can be delivered in English or Turkish.