Christian O.

Hello dear clients,

I am Christian, 42, a developer from Berlin with a focus on PHP and over 15 years of professional experience. I have worked for or helped build from scratch companies like ABOUT YOU, Deinhandy.de, Momox / ubup (now Momox Fashion), kaufDA / Bonial, Xentral, and many others.

My focus is on developing custom applications, especially in the eCommerce environment: For Deinhandy.de (at the time Germany's highest-grossing mobile phone contract shop) and ubup.com (Germany's largest second-hand fashion shop, a brand of Momox), I built the online shops. For ABOUT YOU, I reconfigured the shopping system to be multi-tenant. For Neofonie GmbH, I helped shape the digitalization of pharmacies. For Xentral, I co-implemented the modular SAP competitor (focus: shop systems, tax). And for numerous small and large companies, I have implemented projects of all kinds.

I have extensive experience with Laravel and Symfony, and have also built my own micro-frameworks. I have been working with relational databases (MySQL, Postgres, MongoDB, ElasticSearch) for over 13 years and have worked with time-series data in the context of working with Grafana.

I can handle or develop REST APIs, and I have also worked with SOAP/XML interfaces. I have also been doing testing using Unit / Functional / Integration / Smoke tests (including frontend) and test and deployment pipelines for years.

I am, of course, reasonably proficient in the usual frontend technologies and have a lot of experience in DevOps (Docker, deployment pipelines, all major cloud providers, monitoring, etc.).

My hourly rate is currently €75 net.

Best regards