In the past 15 years I was working as Developer there was barely any web technology I had not at least marginally used at some point. I laid the foundation of my professional career doing HTML (optimized for IE5 and Netscape 4.7 at that time), a bit later I also started using CSS (which indeed was not available at the time I began using HTML).
I always try to use the right tool for the problems I have to solve instead of using the same toolset over and over again for each and every project no matter what the requirements are. These circumstances allowed me to grow a broad knowledge about many different technologies in the web sphere and usually I don't need much time to familiarize with unknown technologies or projects.
I must admit, though, that I have recently developed a lot of affection towards React (+ Ecosystem), Webpack and Node.js and so I try to primarily acquire projects where the usage of React would be useful.
The logos reflect some of the technologies I've worked with in the past.