Who
Patrick van der Velde. Online mostly written as Petrik.
What
Studied aerodynamics and subsequently completed a PhD in mechanical engineering writing software sprinkled with some computational fluid dynamics and optimization calculations.
Commercial software developer since 2008. Worked on projects in C#, Golang, Python, Delphi and C++.
Where
Originally in The Netherlands but then at some point in Auckland, New Zealand
When
Some things since birth, other things since a varying point in time since birth.
Why
In general, and depending on the context, because I can, or because it's there. Pick one.
And finally
There is so much more to explore here, so do take a look.