My name is Johan Liseborn and Castlerock is the company through which I offer services in programming, system architecture, deployment practices, and system administration. I also work with product management and system development team practices. I have been working with system development since 1989, and I have experience from the telecommunications, internet, and financial industries. I am based in Stockholm, Sweden, but I am open to do work outside of Sweden as well. If you wish, you can read more about me, and you can also find out what I work on and what interests me by following the links below.

Don’t hesitate to contact me to discuss opportunities for collaboration.

Recent Posts

On Comments (Feb 23, 2018) · RPi 2 Bitcoin Full Node (Jul 25, 2015)


rtos · micropython · vm · lfe


micropython · secd · wallrite