Keith Williams
- Head of Engineering
- 8 posts
- Engineering, Sep 9, 2026
Scheduling is NP-Hard. We need responses in milliseconds.
- Engineering, May 11, 2026
How do we keep up with PR reviews in the age of AI?
- Engineering, Apr 15, 2026
Moving to closed-source: the technical changes
- Engineering, Jan 1, 2026
How We Cut Our CI Wall Time from 30 Minutes to 5 Minutes
- Engineering, Nov 18, 2025
Incident review: Bookings page update - November 14, 2025
- Engineering, Oct 14, 2025
Engineering in 2026 and beyond
- Engineering, Jul 12, 2025
Finding and fixing O(n²) performance bottlenecks: Lessons from Cal.com's algorithm optimizations
- Engineering, May 15, 2023
Cal.com Cold Start Resolution