1. Stick to simple rules
2. Decentralize
3. Develop layered systems
4. Build in redundancy and overcompensation
5. Resist the urge to suppress randomness
6. Ensure everyone has skin in the game
7. Give higher status to practitioners rather than theoreticians

Sources: https://www.wired.com/2013/04/antifragile-system-design-principles/, http://edgeperspectives.typepad.com/edge_perspectives/2013/04/getting-stronger-through-stress-making-black-swans-work-for-you.html