Experienced MODX Revolution Developer for Long-Term Freelance Collaboration

We operate an established online platform for the German-speaking market and are looking for an experienced MODX developer for a long-term freelance collaboration. This is not a one-time project. We need a reliable developer who can become familiar with our existing platform, maintain the system and regularly implement new features. Technology: - MODX Revolution 3.x with ContentBlocks - PHP 8 - MySQL - Vanilla JavaScript - SCSS/CSS - Stripe Checkout, Subscriptions, Webhooks and invoicing - Git Typical tasks: - Maintain existing functions and fix bugs - Develop new frontend and backend features - Extend and optimise Stripe payment processes - Modify MODX templates, snippets and ContentBlocks - Perform smaller database migrations and maintenance work - Improve performance, accessibility and technical SEO - Provide clear estimates before starting a task - Test all work carefully before delivery Requirements: - Strong and proven experience with MODX Revolution - Very good PHP 8 and MySQL knowledge - Experience working with existing custom code - Solid Vanilla JavaScript and SCSS/CSS skills - Experience with Stripe APIs, subscriptions and webhooks - Clean, structured and reliable working style - Good communication in German - Ability to work independently and provide realistic estimates The use of AI tools is allowed, provided that you understand, review and test the code you deliver. The collaboration is: - Freelance and project-based - 100% remote - Long-term - Communication by email and video call - Code management through Git - Start immediately Please include: 1. A short introduction 2. Two or three relevant reference projects, preferably MODX projects 3. Details about your MODX and Stripe experience 4. Your hourly rate 5. Your availability 6. Your German language level Please start your application with the word “MODX” so we know that you have read the full description.