Niall Deacon is a coordinator at the IAU Office of Astronomy for Education in Heidelberg. Niall did his PhD in Edinburgh and has since held postdoc positions in the Netherlands, USA, Germany and the UK. His research focuses on low mass stars, brown dwarfs and free-floating exoplanets.
In his current job Niall and his colleagues are working to support astronomy educators at primary and secondary level around the world. This includes building a global network of National Education Coordinators (NAECs). If you work in astronomy education and would be interested in becoming a NAEC then follow this link.
Niall is also active in outreach. His popular-level book about exoplanets, Twenty Worlds was recently published by Reaktion Books. He was previously an organizer of Astronomy on Tap Heidelberg, is a former moderator on @astrotweeps and was (way back in the mists of time) the first astrotweep. For the remaining 51 weeks of the year, you can follow Niall at @nialldeacon on Twitter.