Head of development @ LeasingMarkt / AutoScout24, Düsseldorf03/2022 - now

LeasingMarkt GmbH is a car leasing marketplace with 2M+ monthly visitors, acquired by AutoScout24 Group. I led developer teams as an engineering manager and a tech lead.

• Led 15 developers across 4 engineering teams through acquisition
• Executed on-premises to AWS migration and cut cloud spend by 80+%
• Migrated engineering org to GitHub; re-architected CI/CD pipelines
• Introduced custom agile framework from scratch; doubled team velocity
• AI enabler: implemented agentic development across engineering team
• Mentored developers, organizing internal conferences and workshops

PHP Laravel AWS CDK Claude Code MariaDB Agile Gitlab CI/CD Github

CTO @ SportSpar, Leipzig 07/2019 - 03/2022

SportSpar is an e-commerce company processing thousands of orders per day. My tasks ranged from planning and high level technical decision making to designing a project architecture and hands-on development.

• Hired, organised and managed a team of 7 developers
• Fully rebuilt PMS architecture, infrastructure, test coverage, message queue
• Established team-oriented agile development processes
• Introduced quality standards and automated them via CI/CD processes
• Dramatically improved order processing speed

PHP MariaDB Laravel RabbitMQ PHPUnit Agile Redis Gitlab CI/CD Youtrack Ansible

Integrations Lead / Developer @ TraSo, Leipzig 05/2014 - 06/2019

TraSo GmbH builds a backend software for tour operators to place billions of travel offers on the market every day.

• Inherited the most problematic module; turned it into the most stable part of the system
• Drastically reduced the amount of errors with thousands of unit tests
• Tripled the number of connected third-party services/APIs
• Took over further domains: booking and transfer interfaces, OTDS export
• Organised, took over and mentored the integrations team

PHP MySQL Zend Framework PHPUnit Git Jira Stash Bamboo GitLab

PHP Developer @ netforge, Berlin 01/2011 – 04/2013

Online dating platform. Sole developer responsible for building a full accounting management system from scratch (Symfony/Doctrine), plus advertising modules and multi-tenancy features. Worked 100% remotely and independently.

PHP MySQL SQLite Symfony Framework Doctrine Lime (Test Framework) SVN Bootstrap

PHP Developer @ WEB-SHOP-HOSTING, Berlin 03/2010 – 12/2010

WEB-SHOP-HOSTING specializes in e-commerce hosting. I developed Symfony-based CMS and Drupal website for Teamdrive GmbH

PHP Symfony Nginx Bootstrap MySQL SQLite Drupal 7 Mercurial

PHP Developer @ RedFortress, Saint Petersburg 07/2008 – 03/2010

RedFortress is a SEO and web development company. I developed and maintained food delivery websites and internal tools for SEO.

PHP Symfony Apache CSS MySQL Javascript