Kateryna K.

I'm a full-stack WordPress developer with 11 years of experience building and maintaining production sites for businesses that can't afford downtime or slow load times.

💻 My work spans:
🏗️ WordPress & Gutenberg Development

Custom themes, blocks, and plugin architecture, built for teams that need to actually maintain the site afterward.

🛒 WooCommerce

Checkout flows, payment gateway integration (PayPal, Stripe), subscription logic, and database structure (HPOS vs. legacy) for stores handling real transaction volume.

⚡ Performance Optimization

I've taken sites from failing PageSpeed audits to fast, Core Web Vitals-passing builds by fixing the actual bottlenecks: render-blocking scripts, duplicate tag loading, unoptimized assets—not just installing a caching plugin and hoping.

🌍 Multilingual & Compliance

WPML setups across 5+ languages, GDPR/CCPA cookie consent implementation.

🤖 AI-Powered Development & Automation

Integrating AI tools into WordPress workflows and client products, building automation that removes manual work from day-to-day operations.

🔗 JavaScript & Integrations

Custom front-end logic, API integrations, third-party SDK work (forms, interactive demos, consent management).

👥 Team Support

I work with a dedicated team of experienced developers, so your project always has coverage—urgent issues get handled fast, and we maintain a deep understanding of your codebase throughout, with everything delivered on time.

📈 Recent Work

✅ Untangling a WooCommerce/PayPal sandbox testing setup.

✅ Cutting a client's mobile PageSpeed score from a failing state to a passing one.

✅ Building JavaScript automation for consent and tracking scripts across a WPML multilingual site.

🤝 Let's Work Together

If you need a WordPress developer who can own a project end to end—architecture, performance, payments, and ongoing maintenance—let's talk.

🔍 Keywords

WordPress Developer, Full-Stack WordPress Developer, Senior WordPress Developer, WooCommerce Developer, PHP, JavaScript, TypeScript, React, HTML5, CSS3, SCSS, jQuery, MySQL, SQL, WordPress, WooCommerce, Gutenberg, Block Editor, Custom Gutenberg Blocks, Custom Themes, Plugin Development, Custom Plugins, ACF (Advanced Custom Fields), WPML, Multilingual Websites, REST API, WordPress REST API, API Integration, Third-Party APIs, Webhooks, SDK Integration, AI Development, AI Integration, AI Automation, ChatGPT, OpenAI API, Claude, GitHub Copilot, Stripe, PayPal, WooCommerce Subscriptions, WooCommerce HPOS, Performance Optimization, Google PageSpeed Insights, Core Web Vitals, Lighthouse, Caching, Asset Optimization, Database Optimization, Query Optimization, Git, GitHub, GitLab, Bitbucket, Docker, DDEV, DevKinsta, Bedrock, Composer, npm, Yarn, Vite, Webpack, WP-CLI, Linux, Apache, Nginx, CI/CD, GitHub Actions, Bug Fixing, Website Maintenance, Enterprise WordPress, Responsive Web Development, Google Tag Manager, Google Analytics, Cookie Consent, GDPR, CCPA, Tracking Scripts.