Senior Full Stack WordPress / PHP Developer

We’re helping a Swiss-based digital agency find a Senior Full Stack WordPress / PHP Developer to join their long-term, international team.

You’ll work on complex, high-quality WordPress builds, custom PHP systems, and e-commerce platforms — collaborating with developers and designers across Switzerland, Latvia, and Spain.

This is a senior-level, hands-on position for someone with strong technical expertise, proactive communication, and a long-term mindset.

Full-Time (Long-Term) Schedule : Swiss working hours (GMT+2) Location : Fully Remote Engagement : Independent Contractor Start Date : ASAP Rate :  $2400-$3200 / month (depending on level of experience) Key Responsibilities Build and maintain custom WordPress and PHP applications , ensuring high performance and scalability.

Modify and optimize existing PHP codebases , implementing efficient logic and caching.

Work with custom theme builders (UTheme, WooTheme) and advanced theme customization.

Implement front-end integrations using JavaScript, jQuery, HTML, and CSS.

Architect and optimize databases for speed and reliability (not relying solely on ACF).

Manage caching layers, cookie rules, and overall performance optimization .

Use Git for version control, clean commits, and branch management.

Collaborate with designers, PMs, and developers across multiple international projects.

Maintain clear, proactive communication and take ownership of deliverables.

Requirements 5+ years of professional experience as a Full Stack WordPress / PHP Developer .

Expert-level PHP & WordPress : deep knowledge of hooks, filters, post types, taxonomies, and theme architecture.

Experience with custom theme builders (UTheme Builder, WooTheme).

Intermediate–Advanced JavaScript / jQuery for dynamic interfaces.

Strong HTML / CSS skills for clean, responsive UI builds.

Understanding of database architecture , data structuring, and caching logic.

Comfortable using Git and working within version-controlled environments.

Excellent English communication (written and spoken).

Proven experience working in agency-style environments handling multiple projects.

High attention to detail — flawless work is non-negotiable ; you double-check your own output.

Nice-to-Haves Experience with ACF (Advanced Custom Fields) and REST API integrations.

Exposure to membership sites, funnel systems, or payment integrations .

Familiarity with caching frameworks and cookie rule management.

What We’re Looking For A seasoned, proactive developer who thrives on ownership, precision, and accountability.

Someone who respects Swiss standards of quality — structured, disciplined, and dependable.

A long-term collaborator who communicates clearly, solves problems independently, and continuously improves.

You’re not rigid — you bring expertise but stay flexible, open-minded, and receptive to feedback.

Portfolio showing  high-quality web apps, e-commerce platforms, membership sites, payment APIs, and dynamic content systems.

Recruitment Process Initial Interview Client Interview Technical Assessment / Portfolio Review Offer & Onboarding Powered by JazzHR