Cesar Castillo

WHO I AM

I build AI-driven lifecycle and email systems that generate, optimize, and deploy production-ready templates. I create internal tools using structured prompting and rule-based parsing to produce modular, email-client-safe HTML with consistent rendering across environments. Using ESP scripting (AMPscript, Liquid, Handlebars) and AI-assisted workflows, I automate template generation, enforce quality standards (dark mode, accessibility, link integrity), and enable rapid iteration while maintaining clean, reliable email code.

EXAMPLES

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COMPANIES

I've worked with

Apple

Google Fiber

DoorDash

Indeed

Target

OpenSea

Strava

InboxMonster

FITURE

ESPs

I've mastered

Iterable

SFMC

Braze

Zeta Marketing

Customer.io

HubSpot

AND MORE.

CONTACT

Let's chat

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