Initially trained as a mechanical engineer, I spent 20 years in a non-IT industry. I then started developing some open source web projects, mostly centered around SEO, including several Joomla! extensions. This was a hobby in 2006, but 3 years later, and to this date, it became my full time job. I run Weeblr, a small company handling development and support for our open source CMS plugins.
Our main Joomla! extensions are 4SEO, our all-in-one SEO extension for Joomla 3 and Joomla 4, sh404SEF, the veteran SEO extension and wbAMP, the first AMP plugin for Joomla.
We also have a range of SEO-related free of charge products: 4Video to embed Youtube and Vimeo videos in an SEO-compatible way or SEOInfo, an SEO browser extension.
A large part of my days is spent tracking every bit of SEO and marketing information available, experiment with it to decide what should and should not make it into our extensions.