Consultant on database engine design, I take CS papers and provide practical open-source implementation. I provide support for my own open-source project. I also customize software like Zookeeper, Hazelcast or Spark.

My primary 'side' project is in my profile. A have several other 'side' projects. But all programming I do is done for money.

Before I started consulting my current work was just a hobby. I also had other projects in astronomy and strategy games, but I canceled that. I spend way too much time on computer.