Lead/Senior Full-Stack Engineer (PHP/WordPress/JS)

Company
The company specializes in lead generation within the iGaming domain, primarily through SEO-driven solutions. They work on long-term client projects and are currently expanding their internal development team.

Position Overview
We are looking for a Lead / Senior Full-Stack Engineer who operates at a true senior / lead level not by years of experience, but by depth of expertise and ownership.

This role is for someone who:
takes full ownership of complex systems
makes architectural decisions
builds scalable solutions (not just features)
sets and raises engineering standards within the team

Location & Format
Remote
EU time zone required
Full-time, long-term cooperation

Language Requirements
English required for daily communication
Strong English is a significant advantage

Team & Projects
You will join a stable team working on long-term lead generation platforms.
This is not a task-execution role. We expect you to:
take ownership of complex technical decisions
improve architecture and system performance
raise the overall engineering bar within the team

Tech Stack
PHP (Symfony)
WordPress
JavaScript
HTML / CSS

Key Requirements
WordPress (must-have, advanced level)
Experience building complex, large-scale WordPress systems (not content websites)
Hands-on experience with WordPress Multisite (production)
Strong experience with custom plugin development, including:OOP
Composer / autoloading
Typed properties

Experience with:custom database structures
custom caching strategies (not plugin-based)
advanced use of WP_Query
improving developer & admin tooling

If your experience is mostly theme customization or plugin usage this role is not a fit.

PHP (strong senior level required)
5+ years with modern PHP (8+)
Ability to design abstractions, libraries, and internal frameworks
Experience with:phpcs / phpcbf
custom sniffs OR PHPParser / AST
reflection & introspection
DTOs, Value Objects, clean architecture principles

Frontend / CSS
Strong modern CSS skills (must-have)
Understanding of browser rendering, layout, and performance
Performance & Optimization (critical)
Deep understanding of Core Web Vitals
Real experience with performance optimization (not just tools/plugins)
Ability to identify bottlenecks and design custom solutions
Mindset & Approach
We are looking for engineers who:
think analytically and architecturally
deeply understand systems, not just tasks
challenge working solutions" and improve them
proactively raise engineering standards

If you mainly execute tasks and rely on predefined solutions this role is not a fit.

AI Usage
AI is allowed, but must not be a dependency
Strong preference for engineers with deep system understanding
AI-generated communication is discouraged

Start Date
ASAP