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Alex Rivera

Senior Full-Stack Engineer

Open to Opportunities

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

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Experience

Vercel

Senior Software Engineer

2022 โ€“ 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

Stripe

Software Engineer II

2020 โ€“ 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
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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
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Skills

Languages

TypeScriptRustPythonGoRuby

Frontend

ReactNext.jsTailwind CSSRadix UIFramer Motion

Backend & Infra

Node.jsPostgreSQLRedisKafkaDockerAWS
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Education

UC Berkeley

B.S. Computer Science

GPA 3.9 ยท Dean's List ยท Teaching Assistant for CS61B

2016 โ€“ 2020
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Contact

Excited to connect, collaborate, and grow together!

alex@alexrivera.dev GitHub LinkedIn