Hi, I'm Nirmal.
I'm a technology and company builder. I'm Amplitude's first engineer and a core part of the founding team, and I've flexed into whatever the day-to-day needed. On the side, I write about computing and AI, and I'm active in angel investing and the Bay Area tech scene.
Patent
US12530703B2 ↗The cohort targeting and identity resolution behind Amplitude Experiment.
Writing
- Lessons from building AI products in 2025 ↗
- Scaling Analytics at Amplitude ↗
Turing Award Series
Essays on the Turing Award winners and the history of computing
- The AI Winter Started With a Math Proof: Marvin Minsky and the XOR Problem ↗
- When Bits Flip and Everything Breaks: Richard Hamming's Self-Correcting Code ↗
- When Changing a Computer Meant Rewiring It: Maurice Wilkes and the Control Store ↗
- The First Compiler: How Alan Jay Perlis Made Programming Human ↗
Building
Nova
Amplitude's in-house column store and query engine for behavioral analytics. I co-architected it with co-founder Jeffrey Wang, then led the 2.0 rewrite.
Kronos
A storage system that uses S3 partial reads to cut per-user timeline storage costs by 10x.
Amplitude Experiment
Our experimentation and feature-flagging product. I started it from scratch. The cohort targeting and identity resolution behind it is patented.
Amplitude Plus
Our self-serve plan. Built it from scratch.