Blog Posts

• 05 Dec 2012 » BigDecimal example in Go [golang]
• 05 Oct 2010 » Incorrect ROUND_HALF_EVEN behavior in Ruby < 1.9.2
• 25 Jun 2010 » BCrypt maximum password length
• 06 Nov 2009 » IR_Black Terminal theme for OS X [updated for Lion]

Previous Projects

• ServerDensity
  Product development
• MacLes.nl
  Sales backend
• LJS
  Various automation and data extraction from legacy databases

Open Source

• IR_Black-OSX
  A black OS X Terminal theme that is actually readable (by Todd Werth)
  (Files for Mac OS 10.6+)
• sd-beanstalkd
  Beanstalk monitoring plugin for ServerDensity
• sd-elasticsearch
  ElasticSearch plugin for ServerDensity
• ZeroMQ
  Contributed various Ruby code examples

Misc

• Stripe CTF
  Captured the flag in Stripe's Capture the Flag 2.0 event

Previous Talks

• Online payments introduction (iDEAL, credit cards)
  March 7, 2012 OpenCoffee, The Hague
• ZeroMQ Introduction
  February 23, 2012 HackersNL, Utrecht
• Lightning talk on a weekend project called Kronisk (a simple task runner)
  October 28, 2011 DevHaag, The Hague