Open to opportunities

Sean Cornia

@seancornia

Message

I build and modernize enterprise web applications with React, .NET, headless CMS platforms, and AWS.

United States

Message

What I'm looking for

I'm looking to lead and build modern enterprise web applications, combining React and TypeScript frontends with .NET, cloud, headless CMS, accessibility, privacy, and scalable digital architecture.

I've led enterprise web modernization work at EX Squared and Builder Homesite for clients including Costco, Bank of America, and Lennar, building scalable customer-facing applications and digital experiences.

As a Technical Lead, I guide client implementations, run Scrum ceremonies, prioritize backlogs, and translate Figma designs into responsive React interfaces. I've built C# and ASP.NET Core solutions, headless architectures, GraphQL data models, reusable CMS components, checkout flows, and secure payment integrations across Optimizely and Sitecore platforms.

I also bring hands-on experience with accessibility, GDPR privacy controls, SEO metadata, REST APIs, React Native, and AWS-certified cloud development.

Experience

Work history, roles, and key accomplishments

Senior Full Stack Engineer & Technical Lead

EX Squared / Builder Homesite

Oct 2020 - Jun 2026 (5 years 8 months)

Served as Technical Lead in an agency consultancy environment, guiding client implementations, leading daily Scrum standups, and prioritizing sprint backlogs. Architected reusable content components, page templates, and GraphQL data models across modern SaaS and Headless CMS platforms, including Optimizely and Sitecore.