Jonas Pfannschmidt

Specialities: Python, Java, Linux, Cloud, Web, DevOps, Blockchain

About Me

I have more than 10 years of professional experience in software development. Over these years I worked in different roles. As business analyst, architect, technical lead, project manager, tester, support and of course developer I have experienced every aspect of the software development life-cycle.

Corporate Experience

Since 01/2018

Principal Blockchain Engineer at Blockdaemon

10/2011 - 12/2017

Software developer and Consultant at Hewlett Packard Enterprise (Galway, Ireland)

07/2009 - 09/2011

IT Consultant at CSC Deutschland Solutions GmbH (Munich, Germany)

01/2006 - 08/2007

Software developer / Architect at Schwarzmeier Mediengesellschaft LTD (Munich, Germany)

Designed, implemented and maintained various web portals. E.g. guide-to-bavaria, a real-estate portal among others with HTML, Javascript, PHP and MySql.

10/2004 - 12/2005

Software developer at Aescon med GmbH (Tübingen, Germany), part-time

Implemented a web application to create and answer multiple choice questionnaires with HTML, PHP and MySql.

Open Source


Technical lead and project founder of Catena Blockchain as a Service , a simple way to deploy, maintain and work with blockchains on clouds.


Author of cpmerge, a clipboard manager for linux that merges primary selection and clipboard in an innovative way.


Contributor and former core developer of Freezer, a backup and disaster recovery tool for OpenStack. Mainly involved in the initial design and the web ui.


Author of some experimental test tools using OCR and comparing screenshots to detect visual regressions.


Bug fixes, Editor plugins, GameJam contributions and more.



An Introduction to Tools, Solidity & Smart Contracts delivered at the Galway Blockchain Meetup group.


Blockchain Introduction presented as part of the in-company events at Atlantec.


Talks about HTTP Requests and Magic Methods presented as part of a weekly internal training and knowledge exchange that I organized in HPE.


09/2007 - 07/2009

Apprenticeship as IT Specialist at CSC Deutschland Solutions GmbH (Munich, Germany)



B9Lab Certified Ethereum Developer


EXIN Foundation Certificate in OpenStack Software • +353 85 2811165 • Geeha South, Kinvara, Co. Galway, Ireland