Yevhen Mikulenko

Senior WordPress Engineer

About Me

Hi, I’m Yevhen Mikulenko, a Senior WordPress Engineer with over 13 years of experience in web and software development. I specialize in building scalable, high-performance WordPress solutions, optimizing performance, and integrating complex systems.

My journey in web development began at Kharkiv National University of Radioelectronics (KHURE) in 2010. During that time, I discovered WordPress, which became my gateway into development—and eventually, my passion. Since then, I’ve been working with PHP, JavaScript, WordPress APIs, and modern development workflows to create efficient, flexible, and scalable web applications.

This blog is my personal space for sharing knowledge, documenting my experiences, and exploring technical deep dives. Whether you’re a beginner looking for step-by-step tutorials, an intermediate developer seeking insights, or a potential employer interested in my expertise, you’ll find valuable content here.

Experience

Senior WordPress Engineer
RubyStudio Aps – (2018 – Present)

At RubyStudio I develop advanced custom WordPress solutions, integrate external systems, lead migrations, and build scalable architectures for high-traffic websites, e-commerce platforms, and art/data portals.

Key responsibilities and achievements:

  • Developed large custom platforms using WordPress + Laravel, including REST APIs, automated data sync, cron pipelines, and background workers.
  • Built custom themes, plugins, and data models with ACF, custom post types, taxonomies, multilingual structures, and performance-first architecture.
  • Created complex data integrations with 3rd-party REST APIs, legacy systems (including MS Access → MySQL migrations), and media processing pipelines.
  • Delivered full website rebuilds and massive migrations (15,000+ articles, 40,000+ media files) preserving structure and custom components.
  • Built advanced WooCommerce features: event registration system with dynamic pricing, seat management, reward/credit systems with expiration logic, and mobile ticket scanning (PWA).
  • Implemented high-resolution image viewing using IIIF / IIPImage server, custom glossary systems, search filters, and interactive front-end features.
  • Optimized performance (queries, caching, media, infrastructure) and ensured long-term stability, security, automated updates, and maintenance.
  • Collaborated with designers and stakeholders, planned architecture, and delivered complete end-to-end solutions.

Senior WordPress Developer
flake GmbH – (2024 – Present)

At flake GmbH, I provide technical support, optimization, and feature development for a Themosis-based vacancies platform. I build and maintain WordPress websites using both custom and premium themes, focusing on performance optimization, malware removal, and security hardening.

Key responsibilities and achievements:

  • Maintained and enhanced a Themosis framework-based job platform with custom functionality and integrations.
  • Built and supported WordPress sites using custom themes and premium solutions, ensuring stability and scalability.
  • Performed performance optimization: database queries, caching strategies, asset optimization.
  • Conducted security audits, malware cleaning, and implemented hardening measures to protect client websites.
  • Delivered ongoing technical support and feature development aligned with client business goals.

Lead/Expert CMS Developer
NixSolutions Ltd. (2015 – 2018)

  • Architecting and building custom WordPress themes, plugins and reusable components
  • Developing maintainable PHP/OOP and modern JavaScript functionality
  • Developing complex WooCommerce features and custom checkout logic
  • Integrating external services via REST, XML and internal APIs
  • Executing deep performance optimization (queries, caching, front-end, server setup)
  • Conducting technical mentoring, performing code reviews

Middle CMS Developer
NixSolutions Ltd. (2012 – 2015)

  • Built custom WordPress functionality (plugins, widgets, templates)
  • Worked on JavaScript features and UI components
  • Integrated E-commerce and third-party APIs
  • Optimized performance and improved legacy code
  • Participated in architecture planning and project estimation

Junior CMS Developer
NixSolutions Ltd. (2010 – 2012)

  • Built front-end components (HTML, CSS, JS)
  • Created WordPress plugins and themes
  • Fixed bugs and improved existing functionality
  • Learned best coding and architecture practices from senior developers

Skills & Expertise

  • Full-Stack Development (PHP, JavaScript, HTML, CSS)
  • WordPress Development & Customization
  • Docker & DevOps
  • Distributed version control system
  • Scalable Web Architectures
  • API Design & Integration
  • WordPress CLI

What You’ll Find on This Blog

  • Technical Deep Dives – In-depth explorations of programming concepts, tools, and best practices.
  • Tutorials – Practical, hands-on guides to help you solve real-world problems.
  • Case Studies – Lessons learned from projects, including challenges, solutions, and takeaways.

Let’s Connect

I’m always open to discussing new opportunities, collaborations, or just exchanging ideas. Feel free to reach out via LinkedIn or GitHub.