Freelancer profile translated to English.

Description

Freelance software developer from Hamburg, with PHP since 1999, self-employed since 2010. Focus: secure, scalable Symfony backends with a consistent focus on code quality, testing, and clean architecture (PHPUnit, Psalm, phpCS, PHPMD).

Experience with platforms serving millions of users – including a Hamburg-based statistics and market data platform (market data for thousands of companies from 170+ industries) and ESG/sustainability software for regulatory compliance for over 250 companies.

Strong DevOps/Cloud expertise: AWS, Open Telekom Cloud, Docker, Kubernetes, Terraform, CI/CD with GitHub Actions. Security/Auth via OAuth, OpenID, Okta.

I work with AI support and keep my tools up-to-date: Tools like Claude Code are an integral part of my workflow. On my own initiative, I have built open-source developer tools based on the Model Context Protocol (MCP) – this keeps me close to current developments and accelerates my daily work.

Industry field of expertise

Languages

German
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Hamburg (up to 50km)

freelancer
Freelance Software Developer (PHP/Symfony)
April 2010 - Today (16 years and 3 months)
Hamburg, Germany
- Statistics & Market Data Platform (2015–2024): Hamburg-based platform with millions of users; market data for thousands of companies across over 170 industries.
- Sustainability & ESG Software (2025–2026): ESG reporting, supply chain and climate management; assisting over 250 companies with regulatory compliance.
PHP Symfony Java Spring Boot Terraform
kontor eins
Software Developer
August 2008 - March 2010 (1 year and 7 months)
Hamburg, Germany
In this role, I primarily developed and maintained Drupal projects for small to medium-sized businesses.
asdag
Software Developer
June 2004 - May 2008 (3 years and 11 months)
Hamburg, Germany
Development and maintenance of an incentive system with an integrated webshop for employees of a bank belonging to a major German car manufacturer.