P. Dillenbourg works as a consultant in the field of human-computer interaction (e.g. usability testing of web sites, profiling users, design studies,...) and computer-based training.
In 1999, he founded Cognition&Design as small start up for these activities. He has been working for a variety of small and large companies including:

• Cognition&design
• Viviance
• Pictet

past consulting:

• Nestlé
• Lombard & Odier
• Elf
• WHO (OMS)
• IBM
• Observatoire des technologies