JZ

John Zenk

Principal Engineer · Founder

Precision at Scale.

High-performance backend architecture for logistics and data.

Currently: Building Nash

Zappy Mappy

The World's Fastest Geocoding API Sub-10ms latency. Self-correcting. On-prem ready.

Calibrated Athlete

AI Platform for Coaches and Athletes

The Technical Manifest
RUSTSYSTEMS
PYTHONDATA / AI
TERRAFORMINFRA AS CODE
AWSCLOUD
DATADOGOBSERVABILITY
REDISHIGH PERF
NEXT.JSINTERFACE
POSTGRESSTORAGE

Build for Velocity.

Fractional CTO & Systems Architecture.

Precision at Scale · 2025