JGJack Gardner
San Francisco · —
SHIPPEDthis site · 04 may 26✻
BUILDINGStealth startup — production beta in weeks✻
WRITINGNotes on organizational memory benchmarks · 5 min✻
WALKINGOcean Beach with Freddie the dog · sunrise on saturday✻
READINGWorking in Public — Nadia Eghbal✻
INTOlong-running tool use, second-hour failure modes✻
SHIPPEDthis site · 04 may 26✻
BUILDINGStealth startup — production beta in weeks✻
WRITINGNotes on organizational memory benchmarks · 5 min✻
WALKINGOcean Beach with Freddie the dog · sunrise on saturday✻
READINGWorking in Public — Nadia Eghbal✻
INTOlong-running tool use, second-hour failure modes✻
SHIPPEDthis site · 04 may 26✻
BUILDINGStealth startup — production beta in weeks✻
WRITINGNotes on organizational memory benchmarks · 5 min✻
WALKINGOcean Beach with Freddie the dog · sunrise on saturday✻
READINGWorking in Public — Nadia Eghbal✻
INTOlong-running tool use, second-hour failure modes✻
№ 01introductionfiled 04 may 26

JackGardner.

basedSan Francisco, CA
roleFounder, stealth startup
since2025—
prior11x · Track Titan · Amazon · Williams F1
intovoice, agents, forward-deployed

I make AI products that hit production fast. Voice, agents, the customer-facing surface area where things have to actually work in front of someone.

010M+AI calls / monthvoice AI at 11x
$0 → $1M+ ARR in under 6 monthsconceived → created → led → delegated
0210→100Kuserstrack titan
gave motorsports fans AI coaching.processed TBs of racing telemetry a week
030years shippingamazon → stealth
apprentice → engineer → lead → foundernever stopped being the person who writes the code
040orgs / 2 citieslondon · san francisco
London: where I became an engineer.San Francisco: where I came to build something of my own.
№ 02Selected work
№ 01

Stealth startup

Founder
“the one i'm building now”
2025—
current · San Francisco
In stealth. Production beta in weeks.
↗
№ 02

11x

Founding Eng Lead → Tech Lead → Product Lead, Voice AI
“this is where i became a maker at scale”
2023–25
2 yrs · London / SF
Scaled voice AI past 1M calls/month.
↗
№ 03

Track Titan

Tech Lead / CTO
“first time i ran the whole thing”
2021–23
2 yrs · London
100k+ users · prototype to production.
↗
№ 04

Amazon

SDE, Prime Video
“learned to ship at production scale”
2017–21
4 yrs · London
Personalisation across the Prime Video stack.
↗
№ 05

Williams F1

Simulation Engineer
“first time curiosity paid the rent”
2015–16
1 yr · Grove, UK
First neural-net tire-wear model.
↗
№ 03Nowupdated this week
BUILDING✻
Stealth startup — production beta in weeks
— stealth · founding customer signed
INTO✻
long-running tool use, second-hour failure modes
— draft · agents
READING✻
Working in Public — Nadia Eghbal
— stripe press · everything they publish is gold
SHIPPED✻
this site
— 04 may 26
№ 04Writingmonthly
15·05·26

Notes on organizational memory benchmarks

State-of-the-art numbers on Locomo, and why the benchmark probably isn't asking what organizational memory actually has to answer.

5 min→07·05·26

How AI-Native Organizations Will Work

How leverage and coordination change when agents do the work, an extension of Conway's Law for the AI-native firm.

11 min→
№ 05Get in touch

If you're working on something hard in voice, agents, or customer-facing AI — I'd love to talk.

contact me→
linkedingithubx
Currently in San Francisco, CA·— local