10/23/2026 updated
100 % available
Freelance Senior PHP / Symfony Developer
Gelderland, Netherlands
Germany +1
MBO Technical Computer Science / Office Automationinfo: Germany, Netherlands
About me
Senior PHP/Symfony-Entwickler aus den Niederlanden (Grenzregion) mit 15+ Jahren Erfahrung. Schwerpunkt: DDD, CQRS, hexagonale Architektur und Kubernetes. Zuletzt Fintech-Plattform bei Framna und eigene SaaS-Produkte. Arbeitssprache Englisch, Deutsch auf Gesprächsniveau. Verfügbar ab Dezember 2026.
Tailwind CSSPHPLaravelMySQLAngular 2+SymfonyTypeScriptWooCommerceWordPressReact.jsGitLabEvent Driven ArchitectureReact NativeRestful ApiDomain Driven Design
PHP & Symfony Development
Over 15 years of experience building custom backend systems with PHP (up to version 8.4) and Symfony (up to version 7.4), including REST APIs, Doctrine ORM, RoadRunner, and OpenAPI. Extensive work on fintech platforms, multi-tenant SaaS products, and microservices architectures.
Domain-Driven Design & Architecture
Deep hands-on expertise in Domain-Driven Design (DDD), CQRS, hexagonal architecture, and event-driven systems using RedPanda and Kafka. Application of bounded contexts, ubiquitous language, and clean domain models across multiple complex projects.
DevOps & Cloud Infrastructure
Practical experience with Docker, Kubernetes (k3s), kustomize, GitLab CI/CD, GitHub Actions, AWS Elastic Beanstalk, OpenTelemetry/Grafana, and Linux server administration. Delivery of complete deployment pipelines from development to production.
Frontend & Mobile Development
Solid skills in React, TypeScript, Angular, Vue, React Native/Expo, PWA, Twig, and TailwindCSS. Delivery of full-stack products including mobile apps and progressive web apps as sole developer.
Database Management
Experience with PostgreSQL (including row-level security), MySQL, Oracle, and Supabase. Implementation of role-based access control at the database level and complex data modelling.
Testing & Quality Assurance
Use of PHPUnit, Behat, PHPSpec, PHPStan, and Cypress for unit, integration, and end-to-end testing. Establishment of robust test infrastructures and automated quality gates in CI/CD pipelines.
Third-Party Integrations
Integration of Stripe (full payment chain including webhooks, entitlements, and Tax), Firebase/APNs push notifications, S3, and external telecom and banking APIs across multiple production projects.
Laravel & Additional PHP Frameworks
Working knowledge of Laravel as well as earlier frameworks including CodeIgniter, Yii 2, and Zend Framework, applied across various client and employer projects.
WordPress & WooCommerce
Development and long-term maintenance of WordPress and WooCommerce websites including VPS hosting, server migrations, and SSL and IPv6 configuration.
Over 15 years of experience building custom backend systems with PHP (up to version 8.4) and Symfony (up to version 7.4), including REST APIs, Doctrine ORM, RoadRunner, and OpenAPI. Extensive work on fintech platforms, multi-tenant SaaS products, and microservices architectures.
Domain-Driven Design & Architecture
Deep hands-on expertise in Domain-Driven Design (DDD), CQRS, hexagonal architecture, and event-driven systems using RedPanda and Kafka. Application of bounded contexts, ubiquitous language, and clean domain models across multiple complex projects.
DevOps & Cloud Infrastructure
Practical experience with Docker, Kubernetes (k3s), kustomize, GitLab CI/CD, GitHub Actions, AWS Elastic Beanstalk, OpenTelemetry/Grafana, and Linux server administration. Delivery of complete deployment pipelines from development to production.
Frontend & Mobile Development
Solid skills in React, TypeScript, Angular, Vue, React Native/Expo, PWA, Twig, and TailwindCSS. Delivery of full-stack products including mobile apps and progressive web apps as sole developer.
Database Management
Experience with PostgreSQL (including row-level security), MySQL, Oracle, and Supabase. Implementation of role-based access control at the database level and complex data modelling.
Testing & Quality Assurance
Use of PHPUnit, Behat, PHPSpec, PHPStan, and Cypress for unit, integration, and end-to-end testing. Establishment of robust test infrastructures and automated quality gates in CI/CD pipelines.
Third-Party Integrations
Integration of Stripe (full payment chain including webhooks, entitlements, and Tax), Firebase/APNs push notifications, S3, and external telecom and banking APIs across multiple production projects.
Laravel & Additional PHP Frameworks
Working knowledge of Laravel as well as earlier frameworks including CodeIgniter, Yii 2, and Zend Framework, applied across various client and employer projects.
WordPress & WooCommerce
Development and long-term maintenance of WordPress and WooCommerce websites including VPS hosting, server migrations, and SSL and IPv6 configuration.
Experience
Professional experience10+ years
Freelancer since2006
Languages
GermanBasic knowledgeEnglishGoodDutchNative speaker
Project history
Backend developer on several client platforms built with Symfony following a domain-driven architecture. Main projects: Mope (financial platform and mobile wallet for Suriname, Symfony backend, Angular admin portal, hosted on AWS) and Nutt (workforce and planning platform for installation companies, multi-tenant Symfony backend, Angular frontend). Technologies: PHP 8.4, Symfony 7.4, DDD, CQRS, hexagonal architecture, Doctrine, RoadRunner, AWS Elastic Beanstalk, GitHub Actions, Behat, PHPSpec, PHPStan, Angular.
Freelance web and app development under own company since 2006. Recent projects include: Innexora (multi-tenant SaaS for organisational analysis, React, TypeScript, Supabase/PostgreSQL, Symfony, Aug 2025 to Jul 2026); Voltone (guitar web shop as monorepo, Symfony 7, RoadRunner, React/Vite, Kubernetes, May to Jul 2026); Operation Steel (SaaS product with Symfony API, web app and Expo app, Stripe integration, Aug 2026); Client project DevOps/infrastructure (Kubernetes, kustomize, GitLab CI/CD, Symfony, Feb to Jun 2026); Powerfulness (activity and registration iOS PWA, Expo/React Native, Supabase, Dec 2025 to Apr 2026); NEB (React/TypeScript/Supabase app released to App Store, Jan to Jun 2026); helix-ipad open source (native iPad editor for Line 6 HX Stomp XL, Swift/SwiftUI, May to Jul 2026); Bonhof Wellness (WordPress/WooCommerce website and hosting, 2020 to present).
Modernised legacy systems into an event-driven architecture using DDD principles and hexagonal architecture. Redesigned legacy applications with RedPanda as message broker, designed domain models with CQRS, developed Symfony microservices, wrote unit and integration tests, and worked with automated CI/CD. Technologies: PHP 8.3, Symfony, SQL, Docker, Kubernetes, RedPanda, GitLab CI/CD, PHPUnit.