$ whoami

Serhii Pylypenko

Senior WordPress/PHP Engineer · Tech Lead

Enterprise performance, tens of millions req/month · Building AI agents & MCP in PHP

Poland · fully remote · CET · EU work authorization

$ cat resume.txt

10+ years of commercial PHP, 2+ years leading teams. Currently lead engineer on a managed enterprise WordPress platform serving tens of millions of HTTP requests per month.

I work on the expensive end of WordPress — query and caching performance at scale — and I build agentic AI in plain PHP. The prompt at the bottom of this page is one: no frameworks, function calling, token and cost accounting, hard budget limits.

10s of millions
HTTP requests/month on the platform I lead
50s → 3–4s
critical production query, >90% faster
10+
years of commercial PHP

$ cat experience.txt

Lead Engineer — Enterprise WordPress platform

Enterprise media platform in Western Europe, via a European software partner·Mar 2026 — present

  • Platform serving tens of millions of HTTP requests per month on managed enterprise infrastructure.
  • Cut a critical production database query from ~50s to 3–4s — over 90% faster.
  • Sole technical contact with the client's CTO; design across the platform's edge-cache and object-cache layers within its standards.

Team Lead / Full-Stack PHP Developer

Mobilunity (remote)·Sep 2023 — present

  • Led a cross-functional squad — PM, 2 QA, 3 developers.
  • Migrated an enterprise CRM from WordPress to Laravel: REST API, RBAC, data migration pipeline.
  • Owned infrastructure: Linode VPS cluster (Nginx, Redis, Cloudflare WAF), Docker CI/CD — 10-minute deploys, sub-minute rollbacks.

Lead WordPress / Full-Stack Developer

Mobilunity (remote)·May 2018 — Sep 2023

  • Corporate WordPress network — main site plus 6 localized clones, 180k+ monthly visits, 99.9% uptime, absorbed 3× traffic growth.
  • PageSpeed Desktop 96–100 and LCP under 2.5s via granular asset loading.
  • Deep wp_postmeta / EAV-model, indexing and custom-table work — the subject of my proposed WordCamp talk.

Earlier — front-end development and systems administration

In-Create (Kyiv, 2017–2018); Web Studio Art (2015–2016); regional education department, Mykolaiv (2006–2015)·2006 — 2018

$ ls stack/

WordPress
Custom themes & plugins · Managed enterprise WordPress platforms · Gutenberg (React) · WP REST API · WP-CLI · WooCommerce · Multisite & multilingual
Backend
PHP 8 (OOP, SOLID, PSR-4) · Laravel 10+ (Eloquent, Queues, Events, Sanctum) · Livewire · Inertia.js · MySQL · REST API design · Composer · PHPUnit · Redis
Architecture
Domain-Driven Design · CQRS · PoEAA patterns · Microservices · Scalability patterns · System design
Infra
Docker · GitHub Actions CI/CD · Nginx · Cloudflare · Redis · Supervisor · Linode VPS · Linux · Object & edge caching · Core Web Vitals
AI
OpenAI-compatible APIs (OpenRouter) · Function calling · Agent loops · MCP · Claude Code as a daily driver · AI-assisted development workflows
Frontend
HTML5 · CSS3/SCSS · Vanilla JS (ES6+) · React for Gutenberg
Process
Agile/Scrum · Jira · Code review · Technical documentation · Figma (implementing from mockups)

$ cat recommendations.txt

An excellent Technical Lead — properly assesses the risks, does deep research before planning any new feature, and you can rely on him even in case of emergencies outside working hours.
Growth Director — managed Serhii directly
He doesn't just execute. He proactively proposes the best solution from the perspective of business logic, processes, and long-term scalability.
Project Manager — managed Serhii directly
He structures tasks so the next step is immediately obvious, and gives feedback constructively — never criticizing, but guiding.
WordPress Developer — reported to Serhii directly

Five recommendations, with names and full texts, on LinkedIn.

$ ls links/

$ ask — answers questions about my work. Type help to start.

$ ask --topics