08/08/2026 updated
100 % available
WooCommerce & Web Performance Engineer | WordPress Spezialist | Core Web Vitals Optimierung
Serbia
Germany
ITAbout me
WordPress & WooCommerce developer with 5+ years of experience. Specialized in performance optimization (96/100 Lighthouse), custom e-commerce solutions & API integrations. 20+ projects delivered. Seeking full-time position in Frankfurt – ready to relocate immediately. EU Blue Card eligible
HTML5CPanelWeb DevelopmentPHP DevelopmentTerminal EmulatorsWeb Application DevelopmentWooCommerceWordPressMysql DatabasesApi ManagementWeb Api
Ich bin WordPress- und WooCommerce-Entwicklerin mit über 5 Jahren Erfahrung in der Entwicklung maßgeschneiderter E‑Commerce-Lösungen, leistungsstarker Websites und interaktiver Webanwendungen. Meine Arbeit umfasst die gesamte Bandbreite der Webentwicklung – von der Konzeption und Architektur über die Umsetzung bis hin zur Optimierung und laufenden Wartung.
WordPress & WooCommerce Entwicklung
Ich entwickle individuelle WordPress-Themes und -Plugins von Grund auf oder passe bestehende Lösungen an spezifische Geschäftsanforderungen an. Zu meinen Kernkompetenzen gehören:
- Individuelle WooCommerce-Lösungen: Treuesysteme, dynamische Preisgestaltung, optimierte Checkout-Abläufe, individuelle Versandregeln
- Custom Post Types, Taxonomien, ACF, WPML für mehrsprachige Projekte
- Headless WordPress und REST-API-Integrationen
- Anbindung externer Systeme über REST-APIs (Zahlungsgateways, CRM, Versanddienstleister)
Performance-Optimierung
Ein Schwerpunkt meiner Arbeit liegt auf der Optimierung der Ladezeiten und der Verbesserung der Core Web Vitals. In einem großen WooCommerce-Projekt mit über 3.000 Produkten und 30.000 Bildern habe ich den Lighthouse-Performance-Score auf 96/100 gesteigert – bei 100/100 Best Practices und 92/100 SEO. Dazu nutze ich:
- Caching-Strategien (WP Rocket, Litespeed, Redis)
- Bildoptimierung (WebP, Lazy Loading, CDN)
- Code-Splitting, Defer-/Async-Loading von JavaScript
- Datenbankoptimierung und Optimierung von WooCommerce-Queries
- Minimierung von CSS/JS und Critical-CSS-Ansätze
Frontend & Backend
- PHP, MySQL, JavaScript (Vanilla JS, jQuery), HTML5, CSS3, SASS
- Git (GitHub), CI/CD-Workflows
- Elementor (Custom Widgets, dynamischer Content, Full Page Builds)
- cPanel, Linux-Hosting, Server-Konfiguration
API-Integrationen
Ich habe umfangreiche Erfahrung mit der Integration externer Systeme:
- Zahlungsgateways (PayPal, Stripe, klassische Überweisung)
- CRM-Anbindungen (HubSpot, Salesforce, individuelle Lösungen)
- Versand- und Logistik-APIs
- KI- und Chatbot-Integrationen (OpenAI API, ChatGPT-Widgets)
Sicherheit & Wartung
- Malware-Bereinigung, Firewalls, automatische Backups
- Sicherheitshärtung von WordPress und WooCommerce
- Regelmäßige Updates, Monitoring, Fehlerbehebung
Projekte & Referenzen
Meine Arbeit umfasst sowohl kleinere Unternehmenswebsites als auch große E‑Commerce-Plattformen mit mehreren Tausend Produkten. Ich habe über 20 Projekte für internationale Kunden realisiert – von einfachen WordPress-Seiten bis hin zu komplexen WooCommerce-Shops mit individuellen Funktionen.
Ich suche derzeit eine Festanstellung in Frankfurt am Main und bin bereit, sofort umzuziehen. Ich bin für die EU Blue Card gemäß §18g AufenthG qualifiziert (IT-Spezialistin ohne Hochschulabschluss, 3+ Jahre Berufserfahrung).
? Portfolio: zencode.website
? GitHub: github.com/MajaMica
? Referenzen: zencode.website/about-us/#reference
Experience
Professional experience5 - 10 years
Freelancer since2019
Languages
GermanBasic knowledgeEnglishGood
Project history
Full website development and ongoing maintenance for a company specializing in illuminated advertising, signage, and custom branding solutions.
- Complete redesign and implementation of a new website structure focused on usability, performance, and professional presentation of services.
- Development of custom WordPress functionality and tailored solutions based on specific business requirements.
- Implementation of an advanced AI-powered website chat assistant, enabling visitors to receive automated support and information about services in real time.
- Development and integration of custom API connections to enhance communication between the AI system and website functionality.
- Performance optimization, troubleshooting, and continuous technical improvements.
- Ensuring responsive design and consistent user experience across desktop and mobile devices.
- Ongoing technical support, updates, and implementation of new features as the business evolved.
Key strengths demonstrated: ability to understand business objectives and transform them into practical, modern, and effective technical solutions. Expertise in WordPress development, PHP, JavaScript, custom plugin development, API integrations, website optimization, and modern web technologies.
Full WooCommerce development and system architecture for a furniture e‑commerce business with multiple online stores.
- Independently managed end‑to‑end development processes, system architecture, technical maintenance, and continuous optimization of online store systems.
- Complete redevelopment and migration of the primary online store from onlinenamestaj.rs to huluviu.rs, including successful migration of over 3,000 products with full data integrity and zero critical data loss.
- Custom WooCommerce development aligned with specific business logic – checkout, pricing, shipping logic, advanced product filtering, and navigation systems.
- XML and REST API integrations with external systems.
- Database optimization and performance improvements.
Measurable outcomes:
- Page load time decreased by approximately 40%.
- Zero critical downtime following the migration.
- Solutions proven stable, scalable, and low‑maintenance.
Professional assessment: demonstrates a high level of technical independence, strong problem‑solving capabilities, and the ability to translate complex business requirements into scalable and reliable technical solutions.
Lead technical developer for approximately 10 WooCommerce‑based online stores, managing large product catalogs with 5,000–6,000 products and numerous variations.
Key solutions and improvements developed:
- Custom loyalty rewards system integrated directly into WooCommerce (“Vatrice”), where customers earned virtual rewards after purchases and redeemed them on future orders. System automated earning, tracking, and redemption – significantly boosting customer retention and repeat purchases.
- Advanced cart and checkout customizations, including automatic gift product additions, express delivery options, and various checkout UX improvements.
- Complex pricing and discount logic, such as quantity‑based tiered pricing (different unit prices when purchasing two or more identical items).
- Custom product and variation management tools designed to handle large WooCommerce catalogs efficiently.
- Interactive promotional campaigns with animated banners, seasonal visual effects, and multimedia elements aimed at increasing customer engagement.
- Performance optimization: consistently achieved 90+ scores on Google PageSpeed Insights across both desktop and mobile devices.
- Clear technical documentation and knowledge transfer.
Measurable outcomes: stable, high‑performance e‑commerce infrastructure, improved customer retention, and fast, reliable shopping experience even during peak traffic periods.