hello, I'm Alex Rivera —
I build things
for the web.
Full-stack developer with 6 years of experience shipping production software. I specialize in React, Node.js, and scalable APIs. Currently open to senior roles at product-focused companies.
// tech stack
TypeScriptReactNext.jsNode.jsPostgreSQLRedisDockerAWSGraphQLTailwindPrismaGit
// selected projects
Featured
OpenMetrics — Real-time Analytics Engine
A high-performance analytics pipeline processing 50M+ events/day. Built with Kafka, ClickHouse, and a React dashboard. Reduced query time from 8s to 120ms.
TypeScriptKafkaClickHouseReact
Open Source
Formkit — Headless Form Builder
A zero-dependency TypeScript library for building type-safe forms with validation. 4.2k GitHub stars, used by 800+ projects.
TypeScriptReactZod
Freelance
PayRoute — Multi-Currency Payment API
REST API supporting 12 payment providers and 40+ currencies. Handles $2M+ monthly transaction volume with 99.98% uptime.
Node.jsPostgreSQLStripeAWS
// experience
2023 — Present
Vercel
Senior Software Engineer
Leading development of Next.js edge runtime features. Contributed to open-source framework used by 1M+ developers worldwide.
2020 — 2023
Stripe
Software Engineer II
Built and maintained core payment processing APIs. Improved P50 API response time by 34% through query optimization and caching.
2018 — 2020
Acme Corp
Frontend Engineer
Rebuilt the customer dashboard from scratch using React. Reduced load time by 60% and improved NPS by 18 points.
Let's work together
I'm available for senior full-stack roles and interesting freelance projects.