Serhii Krasylnykov

WordPress & Full-Stack Developer

12+ years
50+ projects
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Senior WordPress Developer with 12+ years of experience building custom plugins, themes, and WooCommerce solutions for international clients. Led a team of developers, conducted code reviews, and integrated 10+ third-party services — payments, AI, cloud, and Web3 APIs.

Skills

WordPress

  • Custom Plugin & Theme Dev
  • WooCommerce
  • Gutenberg / Block Editor
  • ACF, WordPress REST API
  • Multisite, WP-CLI
  • Security & Performance
  • WPML, Polylang
  • Elementor, WPBakery

Backend

  • PHP 8.x (OOP, PSR, SOLID)
  • MySQL
  • RESTful API
  • Redis, Memcached
  • PHPUnit, Composer
  • Laravel

Frontend

  • JavaScript (ES6+)
  • ReactJS
  • jQuery
  • HTML5 / CSS3, SASS/LESS
  • Bootstrap, Webpack
  • Fetch API / Axios

DevOps & Tools

  • Git (GitHub, GitLab, Bitbucket)
  • Linux, Nginx, Apache
  • Docker
  • AWS S3, Google Cloud
  • GitHub Actions
  • Bitbucket Pipelines

Integrations

  • Stripe, MoonPay, Coinbase
  • OpenAI, Gemini, Grok
  • Google APIs
  • MetaMask, Web3
  • Facebook API, Zapier

AI Tools

  • Claude Code
  • GitHub Copilot
  • Cursor
  • OpenAI Codex

Experience

Senior WordPress Developer / Team Lead

CreativeMinds
2020 — present
  • Developed and maintained commercial WordPress plugins sold on international markets
  • Led a team of up to 4 developers — code reviews, mentoring, knowledge sharing
  • Built custom solutions using WooCommerce, ACF, Gutenberg, REST API, OOP PHP
  • Integrated 10+ third-party APIs: Stripe, MoonPay, Coinbase, OpenAI, Gemini, AWS, Google Cloud, MetaMask, Zapier, Facebook

Independent Web Developer

Freelance
2014 — present
  • Built 50+ e-commerce and corporate sites on WordPress and other CMS platforms
  • Integrated payment gateways, marketplace feeds, and social APIs
  • WordPress performance optimization, security hardening, and ongoing maintenance

Web Developer

Sound Strategies
2013 — 2014
  • Front-end and back-end development for agency client projects
  • Delivered HTML/CSS markup, PHP backend logic, and CMS customizations