Cesar Castillo
WHO I AM
With extensive email development experience, I build performant, accessible, and responsive emails using semantic, modular HTML and CSS. I leverage ESP scripting (AMPscript, Liquid, Handlebars) to deliver dynamic, data-driven personalization at scale. I lead rebrands, migrations, and audits—focusing on deliverability, dark mode, and WCAG accessibility—while emphasizing scalable architecture, reusable components, and robust QA. I also engineer and maintain internal design systems and frameworks to streamline production and ensure campaign consistency.
COMPANIES
I've worked with
Google Fiber
DoorDash
InboxMonster
OpenSea
Indeed
Target
BeachBody
FITURE
Really Good Emails
ESPs
I've mastered
Iterable
SFMC
Braze
Customer.io
HubSpot
Mailchimp
AND MORE.