37.8044° N · 122.2712° W

John Brown

I help teams turn complex ideas into useful products. My work spans technology, product, data, and design.

Oakland, California

At Apple, I work across voice, machine learning, product, and design, helping teams turn ambiguous problems into systems people can rely on.

My work moves between technical depth and product direction: shaping strategy, establishing metrics, using data to make decisions, and building the collaboration needed to ship.

Earlier, I spent seven years building fraud and abuse systems. I studied pure math, which still shapes how I break down problems and evaluate evidence.

Outside work, I'm usually carrying a camera or playing guitar.

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Much of my recent work is confidential, but these are the disciplines I bring together.

Technical depth

Voice and machine learning

I work on voice systems that understand conversations as they happen, including machine learning that runs privately and responsively on consumer devices.

voicemachine learningon-device
Decision-making

Metrics and data science

I establish metrics, design experiments, and use data to make difficult product decisions legible. The goal is evidence that helps a team act, not measurement for its own sake.

data scienceexperimentationmetrics
How I work

Design and collaboration

I bring engineering, product, design, and research perspectives into the same room, create a shared understanding of the problem, and help teams move forward together.

product designfacilitationteam leadership

I mostly photograph landscapes and close-up details with a Sony A7 IV and a small set of lenses.

Point Reyes, morning fog Sony A7 IV · Voigtländer 40mm f/1.2
Outgoing tide, long exposure Sony A7 IV · Voigtländer 40mm f/1.2
Oakland, botanical close-up Sony A7 IV · 90mm macro f/2.8
Redwood understory Sony A7 IV · Voigtländer 40mm f/1.2
Tide line, low tide Sony A7 IV · anamorphic 50mm
Oakland, moonless sky Sony A7 IV · Voigtländer 21mm f/3.5
Oakland, 5th Street Sony A7 IV · Voigtländer 40mm f/1.2

I mostly make guitar-driven music with baritone guitars and lap steel. It usually lands somewhere between metal and jungle. Nothing is released yet; these are works in progress.

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Abstract artwork for Untitled, baritone
Untitled, baritone
work in progress · 24-bit / 48 kHz · 2026
0:00 / 3:34
Abstract artwork for Untitled, lap steel
Untitled, lap steel
work in progress · 24-bit / 48 kHz · 2026
0:00 / 4:28
Abstract artwork for Untitled, jungle edit
Untitled, jungle edit
work in progress · 24-bit / 48 kHz · 2026
0:00 / 3:07
john@johntbrown.com

I'm based in Oakland. Email is the best way to reach me.