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Kosta S

@qrkiingd

WordPress WooCommerce Engineer

Bulgaria
Bulgarian, English, German
About me
I am a WordPress and WooCommerce Engineer specializing in site speed, automation, and technical SEO. I make slow and broken stores fast and stable, utilizing Node.js and TypeScript tooling to ensure performance. My work includes building automated visual regression systems and managing large-scale production environments with thousands of products.... Read more

Skills

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qrkiingd
Kosta S
Offline • 
Average response time: 1 hour

See my services

Speed Optimization
I will do wordpress speed optimization and fix core web vitals
From$85 / projectMore details
Bug Fixes
I will fix any wordpress or woocommerce bug or error in 48 hours
From$60 / projectMore details

Work experience

Freelance

WordPress & WooCommerce Engineer

Freelance • Freelance

Jan 2022 - Present • 4 yrs 8 mos

Specialized in e-commerce performance engineering, production debugging, and technical SEO for high-scale stores. Rebuilt caching architectures to reduce TTFB from 24s to <2s, eliminated mobile layout shifts, and implemented automated visual QA systems using Playwright. Managed zero-downtime SEO migrations for stores with 6,600+ products and handled complex stock synchronization and checkout defect fixes.