About Me

Senior WordPress engineer, technology leader, and founder with 20+ years of experience building for the web.

From PHP programmer to technology leader

I started writing PHP in 2005 and have spent the last two decades building, leading, and shipping web software at every scale — from solo freelance projects to enterprise e-commerce platforms handling thousands of transactions.

In 2007 I founded Gratta Web Design Studio, where over 14 years I delivered 300+ websites and applications for clients across Europe, the UAE, and the CIS region. That experience taught me everything about running projects end-to-end: client communication, technical architecture, hiring, and shipping under real-world constraints.

Since 2021 I've worked as a senior engineer and technical lead at product companies and agencies including NitroPack (performance), Spiral Scout (agency), and AWTG Ltd (e-commerce gamification) — as well as running my own consultancy Gratta Studio.

Today I'm Lead WordPress Developer at Digital Trends Media Group, responsible for the architecture and delivery of high-traffic enterprise WordPress platforms on WordPress VIP / Altis — custom plugins, APIs and full-stack features in PHP, React and TypeScript, with a focus on performance, scalability and AI-powered integrations.

Since 2023 I hold the title of Certified Codeable Expert Developer — placing me among the top 2% of vetted WordPress freelancers on the platform.

Lately a large part of my work is AI-assisted engineering: setting up Claude Code for teams with tailored CLAUDE.md files and custom skills, building MCP servers that connect AI agents to WordPress and internal APIs, and integrating LLM APIs into plugins and editorial tooling.

I hold a Master's Degree in Applied Mathematics from the National Technical University of Ukraine (KPI), which shapes how I approach complex engineering problems: systematically, with attention to edge cases and underlying structure.

I'm based in Valencia, Spain and work remotely with clients worldwide. I speak English (full professional), Ukrainian and Russian (native), and Spanish (B1).

Valerii Vasyliev — WordPress Engineer

Valerii Vasyliev · Valencia, Spain

Experience

Feb 2026 – Present

Lead WordPress Developer

Digital Trends Media Group Now
  • Architecture and delivery of high-traffic enterprise WordPress platforms (WordPress VIP / Altis)
  • Custom plugins, APIs and full-stack features across PHP, React and TypeScript
  • Performance, scalability and AI-powered integrations; owns technical decisions and development standards

Jan 2023 – Present

Certified Codeable Expert Developer

Codeable Now
  • Direct client communication, project estimation, and milestone planning
  • Custom API integrations and WordPress plugin development & maintenance
  • Solving complex programming challenges for front-end & back-end development

Oct 2022 – Present

Lead WordPress Developer

Gratta Studio Now
  • Architectural planning, development, and team management
  • Direct collaboration with customers to align technical and business goals
  • WordPress & WooCommerce agency specialising in custom builds

Jun 2024 – Jan 2025

Sr. Fullstack WordPress Developer

VANYOO
  • Ongoing site maintenance and performance optimization
  • Feature enhancements and UX-focused development

Oct 2021 – Mar 2024

Lead WordPress Developer

Spiral Scout
  • Full-cycle WordPress project development
  • Led development teams, technical troubleshooting, and project reporting

Nov 2022 – Oct 2023

Senior WordPress Developer

NitroPack
  • Research, design, and performance-driven software development
  • Improved WordPress integrations for speed and efficiency

Mar 2021 – Jun 2022

Lead WordPress Developer | Ecommerce Technical Lead

AWTG Ltd
  • Built an advanced e-commerce platform with gamification features
  • Integrated multiple third-party partners & API solutions

Sep 2012 – Aug 2015

Lead PHP Developer

Froza Auto
  • Led architecture, development, and optimization of a major e-commerce platform

2008 – 2012 · 2015 – 2016 · 2019 – 2020

Lead / Full Stack PHP Developer

Burj Auto DWC LLC
  • Three engagements (Kyiv, then Dubai) building large-scale logistics & e-commerce systems from scratch
  • Project architecture, programming, team management and technical support

Jan 2007 – Mar 2021

Founder | Senior Web Developer

Gratta Web Design Studio
  • Owner and senior developer of a 4-person studio; 300+ websites & applications on WordPress, Joomla, PrestaShop, DLE and the in-house GrattaCMS
  • Project management, PHP & JavaScript development, managing other developers

Aug 2005 – Jan 2007

PHP Programmer

Oksima Biz · IMU
  • Website development and technical support (Kyiv)

Skills & Tools

Languages
PHP JavaScript TypeScript React HTML CSS MySQL Redis
Platforms & CMS
WordPress WordPress VIP Altis WooCommerce Joomla
APIs & Integrations
REST API WP REST API Stripe PayPal SendGrid Zapier
AI & Automation
Claude Code CLAUDE.md Custom Skills MCP Servers AI Agents LLM APIs
Dev Tools & QA
Git GitHub Composer WP-CLI Docker PHPUnit Codeception
Performance
NitroPack Cloudflare Varnish Object Caching CDN
  • Strategy & Planning
  • Team Leadership
  • Client Communication
  • Project Estimation
  • Problem Solving
  • Agile / Scrum
English Full Professional
Ukrainian Native
Russian Native
Spanish Limited Working (B1)

Master's in Applied Mathematics

National Technical University of Ukraine (KPI)

Sep 2003 – Jun 2009

All-around SEO Semrush Academy
Technical SEO — Hosting & Server Configuration Semrush Academy
Negotiations Manual LinkedIn Learning
Customer Service — Discovering Customer Needs LinkedIn Learning
Customer Service — Engaging with Customers LinkedIn Learning
Customer Service — Adapting to Customer Cues LinkedIn Learning
Customer Service — Interpreting Service Priorities LinkedIn Learning
Customer Service — Fostering a Service Mindset LinkedIn Learning
ChatGPT Complete Guide — Learn Midjourney, ChatGPT 4 & More Udemy

Let's work together

Looking for a reliable senior WordPress engineer? Let's talk about your project.