San Francisco, CaliforniaSoftware / Applied AI

AngeloDe Leon.

I build software that works.
And AI that does, too.

Full-stack & applied AI engineer.
Head of AI at TechInSF.
Turning complex problems into useful tools.

Explore the work

Independent thinking. Hands-on engineering.Scroll to explore ↘

01 / Selected workA few things I’ve put into the world

Built out of
curiosity.

Tools for the way I work.
Ideas taken all the way to code.

BHASSISTANTBROWSER

Concept illustration / BrowserHelm

01

Agent infrastructure

BrowserHelm

A native macOS gateway between AI assistants and browser agents. Less context overhead. More deliberate automation.

SwiftUIPythonMCP

watchtowerlocal agent observability

Concept illustration / Agent Watchtower

02

Developer observability

Agent Watchtower

A local observer for coding agents. Bring sessions, token use, and API-price estimates into one place.

TypeScriptNode.jsSQLite

Your content.
Your canvas.

Concept illustration / SocialCanvas

03

Full-stack product

SocialCanvas

An open-source Instagram widget platform. A way to bring social content into a website you control.

TypeScriptReactNode.js

More tools, experiments & source code View all projects ↗

02 / The approachBuilder. Operator. Teacher.

From the first
“what if” to the
thing that works.

I work across the whole system: the interface, the agent, the infrastructure, and the people using it. At TechInSF, I help teams put AI into practice. Here, I share what I’m building along the way.

A little about me ↗

03 / Field notesAll writing ↗

Thinking
out loud.

The browser as an agent boundary

The idea behind BrowserHelm, and separating navigation from the decisions that matter.

Why I’m building local observability for coding agents

The questions behind Agent Watchtower: activity, tokens, and what the numbers actually mean.