Sorry about this, we are in read only mode. You can browse the site as normal but you won't be able to sign in or make changes.
Programmer, ballroom dancer and twitter n00b. Don't know if this is going to work.
bio from Twitter
Roald van Doorn has not yet claimed their profile.
Are you Roald van Doorn?
Sign in with Twitter to claim your profile and make changes.
23rd–25th October 2017
Roald van Doorn
See Roald van Doorn's full speaking history
1 event spoken at
1 event attended
Follow @lanyrd on Twitter.
Lanyrd on Facebook
+ Cookies · Email us