Matej H.

I help businesses design, develop, migrate, integrate, optimize, and scale ecommerce stores, CMS platforms, SaaS products, and custom web applications. With 11+ years of experience, I’ve helped launch 500+ ecommerce stores and delivered 200+ custom web solutions for startups, SMBs, healthcare organizations, nonprofits, enterprise brands, real estate companies, and service businesses. I’m a Certified Shopify & BigCommerce Partner with strong hands-on experience across Shopify, Shopify Plus, WooCommerce, WordPress, BigCommerce, Magento, PHP, Laravel, React, Next.js, Node.js, and custom web application development. Whether you need a Full-Stack Developer to build a web application from scratch, a Shopify Plus developer for a complex ecommerce project, a WordPress/WooCommerce expert, a BigCommerce developer, a custom PHP/Laravel application, an API integration, or an existing platform migrated and optimized, I can help take your project from discovery and architecture through development, testing, deployment, and ongoing support. 💻 Full-Stack Web Development I build complete end-to-end web applications, handling both frontend and backend development, database architecture, APIs, integrations, authentication, business logic, dashboards, and deployment. 🔹 Custom Web Application Development 🔹 Full-Stack Website Development 🔹 SaaS Application Development 🔹 Business & Enterprise Web Applications 🔹 Client & Customer Portals 🔹 Admin Panels & Custom Dashboards 🔹 CRM & LMS Platforms 🔹 Membership & Subscription Platforms 🔹 Inventory & Workflow Management Systems 🔹 Ecommerce Automation Systems 🔹 Custom Backend & API Development 🔹 REST API Development & Integration 🔹 Third-Party API Integrations 🔹 Database Design & Development 🔹 Authentication & User Management 🔹 Payment Gateway Integrations 🔹 ERP / CRM / PIM Integrations 🔹 Cloud & Server-side Development 🔹 Performance Optimization & Scalability 🛒 Ecommerce Development 🔹 Shopify & Shopify Plus Development 🔹 Shopify 2.0 & Liquid Development 🔹 Shopify Theme Development & Customization 🔹 Custom Shopify Apps & Private Apps 🔹 Shopify Store Development & Optimization 🔹 Shopify Migration & Replatforming 🔹 WooCommerce & WordPress Development 🔹 Custom WordPress Themes & Plugins 🔹 BigCommerce Development & Stencil Customization 🔹 Magento / Adobe Commerce Development 🔹 Custom Ecommerce Functionality 🔹 Ecommerce API Integrations 🔹 Payment & Shipping Integrations 🔹 ERP, CRM & PIM Integrations 🔹 Ecommerce Automation 🔹 Product & Customer Data Migration 🔹 Ecommerce Performance Optimization 🔹 Conversion-focused UX Improvements ⚙️ Backend Development 🔹 PHP Development 🔹 Laravel Development 🔹 Custom PHP Applications 🔹 Node.js Backend Development 🔹 RESTful API Development 🔹 Third-Party API Integration 🔹 Database Architecture 🔹 MySQL / PostgreSQL / MongoDB 🔹 Authentication & Authorization 🔹 Business Logic & Workflow Development 🔹 Custom Admin Systems 🔹 Backend Optimization & Scalability 🎨 Frontend Development 🔹 React.js Development 🔹 Next.js Development 🔹 JavaScript Development 🔹 Shopify Liquid Development 🔹 HTML5 & CSS3 🔹 Responsive Web Design 🔹 Mobile-first Development 🔹 UI/UX Implementation 🔹 Headless Ecommerce 🔹 Frontend Performance Optimization 🔌 API, Integration & Automation I build and integrate systems that allow different platforms and business processes to communicate reliably. 🔹 REST API Integration 🔹 Custom API Development 🔹 Shopify APIs 🔹 Ecommerce Integrations 🔹 CRM & ERP Integrations 🔹 PIM Integrations 🔹 Payment Gateway APIs 🔹 Shipping & Fulfillment APIs 🔹 Marketing & Automation Platforms 🔹 Custom Business Automation 🔹 Data Synchronization & Workflow Automation 🧠 CMS & Platform Development 🔹 WordPress Development 🔹 Custom CMS Development 🔹 Headless CMS Development 🔹 CMS Customization 🔹 CMS Migration 🔹 Ecommerce Replatforming 🔹 Content Management Systems 🔹 Custom Admin Interfaces 🔹 Website Maintenance & Security 🚀 Performance, SEO & Optimization 🔹 Website Speed Optimization 🔹 Core Web Vitals Optimization 🔹 Technical SEO 🔹 SEO-Friendly Development 🔹 Mobile Performance Optimization 🔹 Database Optimization 🔹 Backend Performance Optimization 🔹 Conversion Rate Optimization 🔹 UI/UX Audit & Improvements 🔹 WCAG / Web Accessibility 🔹 UAT & QA Testing 🤖 AI/ML Development I also help businesses identify and implement practical AI/ML solutions into their existing systems and applications. 🔹 AI-powered Web Applications 🔹 AI Application Development 🔹 AI API Integration 🔹 AI-powered Business Automation 🔹 AI Features for Ecommerce 🔹 AI/ML Consulting 🔹 Custom AI Integrations 🔹 AI-enabled SaaS & Web Applications 🧰 Technology Stack Frontend: React, Next.js, JavaScript, Liquid, HTML5, CSS3 Backend: PHP, Laravel, Node.js, Custom PHP Ecommerce: Shopify, Shopify Plus, WooCommerce, BigCommerce, Magento CMS: WordPress, Custom CMS, Headless CMS Database: MySQL, PostgreSQL,