Lead Frontend Engineer

I’m Bryan Guillen — a delivery-focused lead frontend engineer with 9 years of experience building reliable, high-performing UIs for B2B SaaS. I ship complex React/TypeScript workflows (tables, wizards, admin tooling), and I care a lot about quality: testing, maintainability, and a UI that holds up at scale.

I’m currently at Firstbase, where I’ve helped scale the frontend from Series A through acquisition.

If you want to see what I’ve built and how I think, head to my portfolio.

Reach me at bryan@bryanguillen.dev.