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 2022 I've worked as a senior engineer and technical lead at product companies including NitroPack (performance), Spiral Scout (agency), and AWTG Ltd (e-commerce gamification) — as well as running my own consultancy Gratta Studio.

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

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 (B2+), Ukrainian and Russian (native), and a little Spanish.

Valerii Vasyliev — WordPress Engineer

Valerii Vasyliev · Valencia, Spain

Experience

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 2022 – 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

Oct 2008 – Apr 2020

Full Stack PHP Developer

Burj Auto DWC LLC
  • Developed large-scale logistics & e-commerce systems from scratch

Jan 2007 – Mar 2021

Founder | Senior Web Developer

Gratta Web Design Studio
  • Developed 300+ websites & applications on WordPress, Joomla, and custom CMS

Skills & Tools

Languages
PHP JavaScript HTML CSS MySQL Redis
Platforms & CMS
WordPress WooCommerce Joomla
APIs & Integrations
REST API WP REST API Stripe PayPal SendGrid Zapier
Dev Tools
Git GitHub Composer WP-CLI Docker
Performance
NitroPack Cloudflare Varnish Object Caching CDN
Testing & QA
PHPUnit Codeception Manual QA
  • Strategy & Planning
  • Team Leadership
  • Client Communication
  • Project Estimation
  • Problem Solving
  • Agile / Scrum
English Professional Working (B2+)
Ukrainian Native
Russian Native
Spanish Pre-Intermediate (A2)
Indonesian Elementary (A1)

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.