Сергій

SERHII VASYLIEV
Senior WordPress / PHP Engineer — Performance & Content Automation
[відкрити контакти](див. вище в блоці «контактна інформація») | [відкрити контакти](див. вище в блоці «контактна інформація») | Kyiv, Ukraine · Remote / Hybrid | [відкрити контакти](див. вище в блоці «контактна інформація») |
github.com/Aberfort

SUMMARY
Senior WordPress/PHP Engineer with 10 years of commercial experience building custom WordPress platforms, plugins, and
automation tools for high-traffic content and SEO operations. Specialized in performance engineering (Core Web Vitals), ACF/
Gutenberg architecture, and content-automation systems that remove manual work from editorial and SEO teams. Comfortable
owning a feature from architecture through CI/CD deployment and production support.

CORE SKILLS
WordPress Custom plugins & themes, hooks/actions/filters, REST API, ACF, Gutenberg blocks, custom post types/
taxonomies, WP-CLI, WP-Cron, Action Scheduler, Yoast/Rank Math
PHP & Backend PHP (OOP), Laravel, REST APIs, MySQL, PostgreSQL, Redis, background queues, third-party API
integrations
Frontend JavaScript, React (Gutenberg blocks & interactive components), HTML5, CSS3/SCSS, Tailwind, Vite,
Webpack
Performance & SEO Core Web Vitals, page & object caching, preload strategy, Critical CSS, asset optimization, technical SEO
automation
Infrastructure Docker, Linux, GitHub/GitLab CI/CD, Nginx, Composer, NPM, versioned release pipelines
AI-Assisted Dev Claude Code, Codex — used to accelerate debugging, code review, and prototyping cycles

PROFESSIONAL EXPERIENCE
Senior WordPress Developer Aug 2024 – Aug 2026
Sharkscode
• Owned WordPress performance engineering across the company's site portfolio: built a caching, preload, and Critical CSS
pipeline that measurably improved Core Web Vitals scores across production sites.
• Designed and built SC Autoparser, an automated content-import and scheduled-publishing pipeline for multilingual content,
removing manual, repetitive publishing work from the content team.
• Architected reusable ACF/Gutenberg component libraries and custom post types adopted across the site portfolio, cutting new-
page build time and reducing duplicated front-end work between sites.
• Built PeopleForce API synchronization via WP-Cron/WP-CLI, and centralized website-management tooling with authenticated
REST APIs and monitoring, running on Docker with automated GitLab CI/CD release pipelines.
• Implemented private plugin delivery and update mechanism via GitLab CI/CD and versioned release packages, standardizing
updates across internal and client sites.
Founder & Full-Stack Developer 2026 – Present (side project, evenings/weekends)
SEO Content Control Center — independent product
• Building a multi-tenant SEO operations SaaS connecting WordPress content context with Google Search Console performance
data to surface traffic-loss causes and SEO opportunities.
• Designed a review-first execution pipeline: preview → dry run → explicit approval → signed, queued, retried requests with
recorded results — built to make automated site changes safe to trust.
• Delivered OAuth sync, role-based access, billing foundation, and Dockerized deployment as a solo full-stack build, from
architecture through release.

EARLIER EXPERIENCE
WordPress Developer Dec 2023 – Aug 2024 WordPress Developer Aug 2019 – Sep 2021
7Dxperts Intellectsoft
• Delivered custom themes and client sites end-to-end, from • Owned development and ongoing support of corporate/
requirements to launch and post-release support, including marketing websites for international campaigns, including
third-party integrations and performance/database custom templates, landing pages, and integrations.
optimization. WordPress Developer Aug 2016 – Aug 2019
WordPress Developer Nov 2021 – Dec 2023 White Label Agency (US clients)
Boosta • Built custom WordPress sites and landing pages for US
• Supported high-traffic content sites with custom functionality, agency clients from design to launch, plus ongoing
reusable ACF components, and editorial tooling. maintenance across a broad site portfolio.
• Built SEO/content-workflow plugins (custom taxonomies,
AJAX interfaces, automation) used by the SEO team across
multiple sites.
• Improved Core Web Vitals through asset optimization,
caching, and lazy loading; collaborated directly with SEO,
content, and QA teams on release stability.

LANGUAGES
Ukrainian — Native Russian — Fluent English — B1 (Intermediate) (technical reading/writing)