Senior Frontend Engineer / 2026
I build front ends that stay fast after they ship.
I'm Miguel, a senior frontend engineer in Colombia. Nine production Next.js platforms since 2023, and a performance habit that predates all of them.
Read the writing ↘02What I do
The interesting part is never the first release. It's whether it still holds up a year later.
- 01
Performance that survives the release
96 desktop Lighthouse, 0.8 s LCP, 0 CLS on a production platform — and six years of the same work before the current stack, back to service workers and PWAs on storefronts.
- 02
Next.js platforms, nine of them
App Router, Server Components and Server Actions against headless WordPress and REST, shipped and maintained rather than prototyped.
- 03
Pipelines that catch things early
Matrix testing, CodeQL, Dependabot with auto-merge and SHA-pinned actions across 18+ repositories, plus CI that provisions and requests automated review.
03Writing
What each project actually taught me.
Not tutorials. The bug that took a week to find, the fix that turned out to be configuration, the assumption that measurement destroyed.