I will fix wordpress bugs, problems and update your website fast

S
sergiybard
S
sergiybard
Sergey K

About this gig

Your WordPress site broken, slow, or showing errors?


Im a FullStack WordPress & WooCommerce Developer with 7+ years of experience.

I fix bugs fast and solve problems at the server level (Nginx, PHPFPM, MySQL) where most freelancers never look.


I can fix:

  • 500 / 502 / 503 / 504 errors
  • Slow loading & performance issues
  • WooCommerce checkout & payment problems
  • Plugin conflicts, WSOD, broken admin
  • Security issues & malware
  • Updates, migrations, SSL, integrations


Why clients choose me:


  • Serverlevel troubleshooting
  • Fast delivery
  • WooCommerce expertise
  • GDPRcompliant solutions
  • EN / DE / RU / UA


Message me before ordering Ill check your issue and recommend the right package.

Respect third-party rights

Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.

Get to know Sergey K

Sergey K

WooCommerce Expert

  • FromUkraine
  • Member sinceJan 2026
  • Avg. response time8 hours
  • Languages

    English, Russian, Ukrainian, German
STOP LOSING SALES due to slow loading! I am an Austrian-based Server Engineer and Full-Stack WooCommerce Developer with 7+ years of experience. I don’t just build stores; I engineer high-performance e-commerce machines. Why work with me? Speed is Money: I optimize at the Nginx and MySQL level to hit 95+ PageSpeed scores. EU Standards: providing clear communication and GDPR-compliant technical solutions. Full-Stack Power: From React-based custom themes to Stripe/PayPal hardening. Clean code, secure servers, and stores that actually convert. Let’s make your business fly.

My Portfolio

Other Website Maintenance Services I Offer