Building Zipline: From Launch Disaster to Drone-Delivery Giant

• Zipline serves 5,000 hospitals, saves 17,000 lives/year, 135M autonomous miles flown.
• Aircraft is only ~15% of autonomous logistics complexity — rest is ops, infra, software.
  • Inventory, cold chain, ATC software, weather prediction, ground systems = the hard part.
  • 9 months to stabilize 1 hospital; 3 months more to hit 21 (full contract).
• Practical problem-solvers exist in <10% of humans — hire for that, not credentials.
  • Blind references non-negotiable; treat provided references as “paid.”
  • Ask: would they be in your first five hires if you founded a company?
• Alfred Lin rule: fire the first time the thought crosses your mind.
  • A/A+ performers never trigger retention doubt — hesitation is the signal.
• Rwanda launch was a disaster: launcher destroyed itself every 3rd cycle, mid-ceremony.
  • Cliffton fixed it on his back in dirt with screwdrivers, Navy SEALs watching.
  • Arrived the day after a mother died from delayed blood — ministry email thread was live.
• Hardware costs run 10X initial projections — Zipline bled for 2 years, reached 1/3X after 8.
• Most billion-dollar companies next decade will be hardware, not knowledge economy plays.

Keller Cliffton (Zipline Co-founder & CEO), interviewed by Brett Berson (First Round Capital) · 2026-03-12 · Read on review.firstround.com