Alex Rivera

Senior Full-Stack Engineer

I build fast, accessible products — from design systems to distributed backends. Five years shipping features at scale for millions of users.

Experience

Senior Software Engineer at Vercel
2022 – Present
  • Led the rebuild of the deployments dashboard, reducing p95 load time by 68%
  • Shipped Edge Config from zero to 10,000+ customers in 3 months
  • Mentored 4 engineers and ran weekly architecture reviews across 2 time zones
Next.jsTypeScriptEdge RuntimeGo
Software Engineer II at Stripe
2020 – 2022
  • Built the Stripe Radar rules engine UI used by 250,000+ merchants globally
  • Reduced fraud false-positive rate by 23% through improved ML signal features
  • Designed the webhooks configuration system with a zero-downtime migration
RubyReactKafkaPostgreSQL

Projects

OpenBoard

Real-time collaborative whiteboard built on CRDTs. 2,000+ GitHub stars, featured on Hacker News front page.

RustWebSocketsReactYjs

Luma CLI

Developer tool for managing multi-environment deployments with zero config. Adopted by 3 YC-backed companies.

TypeScriptNode.jsCLI

Carta Design System

Accessible component library with 60+ components. Cut design-to-code time by 40% across 3 product teams.

ReactStorybookRadix UITailwind

Skills

Languages TypeScriptRustPythonGoRuby
Frontend ReactNext.jsTailwind CSSRadix UIFramer Motion
Backend & Infra Node.jsPostgreSQLRedisKafkaDockerAWS

Education

B.S. Computer Science · UC Berkeley (GPA 3.9 · Dean's List · Teaching Assistant for CS61B)
2016 – 2020

Get In Touch

Open to opportunities and collaborations

alex@alexrivera.dev GitHub ↗ LinkedIn ↗