May 14, 2013
Chief product at the startup Questionmark (looking for rails/frontend developers)
The Amsterdam based monthly Ruby meetup! amsrb.org /@amsrb
50% discount on e-books, and 40% on printed books with the code DSUG.
40% discount on e-books until the end of July with the code STROOPWAFEL.
510 Growth Hackers
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