Senior WordPress Developer (PHP) – Madrid

Description

Job Summary: We are seeking a Senior WordPress Developer with an engineering mindset to design, develop, and maintain robust and scalable WordPress solutions. Key Highlights: 1. Lead development from scratch in high-impact projects. 2. Participate in the entire software development lifecycle. 3. Stable project in a demanding technological environment. At **IT Partner España**, we continue growing and are looking to hire a **Senior WordPress Developer** with solid technical experience and the ability to lead development from scratch in high-impact projects. We seek a candidate with an engineering mindset, accustomed to working with best practices and possessing deep knowledge of the WordPress ecosystem beyond visual tools. What will be your mission? You will be responsible for designing, developing, and maintaining robust and scalable WordPress solutions, participating in the entire software development lifecycle: from architecture definition to optimization and deployment. Responsibilities: * Define and develop complete WordPress project architectures from scratch * Create **custom themes** without using page builders or commercial templates * Design and develop **decoupled custom plugins** * Model content using Custom Post Types, taxonomies, and custom fields * Extend and consume the **WP REST API** * Lead **complex migrations** between environments or from other CMSs * Optimize performance and database queries * Apply WordPress security best practices * Automate tasks using ecosystem tools * Participate in version control processes and code reviews ✅ Mandatory Requirements: * \+5 years of WordPress development experience * In-depth knowledge of WordPress core: hooks, Loop, WP\_Query, and template hierarchy * Experience developing custom themes and plugins * Advanced knowledge of **PHP 8\+** and object-oriented programming * Experience with Composer, namespaces, and design patterns * Advanced ACF expertise (including ACF Pro, flexible content, and blocks) * Experience with WP REST API (endpoints, authentication, permissions) * Experience with complex migrations (data, SEO, redirects, users, media) * Performance optimization (caching, transients, profiling) * Solid security knowledge (XSS, CSRF, SQL Injection, etc.) * Proficiency with tools such as WP\-CLI, Git (Gitflow), and local environments (Docker, DDEV, Local) Location: * Madrid (hybrid: 3 days in office / 2 remote) * Must be available to attend client offices Conditions: * Salary: **up to €42,000 gross/year** * Stable project in a demanding technological environment * Opportunities for growth and involvement in complex projects What do we value? * Ability to make technical decisions autonomously * Quality- and best-practices-oriented mindset * Experience in demanding environments or large-scale projects