Slavisa R.

E-Commerce Solutions Architect & Senior WordPress Engineer With 20 years of professional industry experience, I architect, optimize, and secure high-performance web applications and e-commerce platforms. Specializing in PHP, MySQL, JavaScript, and advanced WordPress/WooCommerce engineering, I transform complex technical challenges into clean, fast, and scalable digital solutions. Rather than just building websites, I focus on engineering clean-code systems that drive business growth through uncompromising speed, bulletproof security, and advanced SEO engineering. With over 29,000 hours tracked on Upwork and consistent 5-star feedback, I serve as a trusted technical partner for agencies and enterprise clients who require execution at the highest standard. Core Expertise: • Custom Core Development: Engineering bespoke, lightweight WordPress themes and plugins from scratch without relying on bloated, slow external dependencies. • E-Commerce Architecture: Scaling complex WooCommerce ecosystems, optimizing database queries, and integrating robust ERP/CRM or payment systems. • Web Performance Engineering: Diagnosing performance bottlenecks, refactoring legacy code, and maximizing Core Web Vitals for speed and conversion. • Cybersecurity & Malware Remediations: Deep-cleaning compromised systems, identifying backdoors, auditing vulnerabilities, and hardening environments against future attacks. • Platform Migrations & Prototyping: Pixel-perfect conversions from Figma to lightweight code, and executing seamless, zero-downtime platform migrations (e.g., Shopify to WooCommerce). Technical Stack & Skills • Languages & Core: PHP, JavaScript (ES6+), MySQL, HTML5, CSS3/SASS, AJAX • Platforms: WordPress (Core, Custom Themes & Plugins), WooCommerce Architecture, Shopify • Security: Malware Removal, Security Auditing, Server-Level Hardening, Vulnerability Patching • Design & Layout Engines: Figma-to-Code, Elementor, Divi, Enfold (utilized specifically for legacy support and client requirements)