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FROM SCHEMA TO PIXELREAL USERS IN THE LOOPBUILT, SHIPPED, SOLD

AlonsoHerrera

Memoji-style avatar of Alonso Herrera

I currently work as a Fullstack Engineer at Tether Education, open to new opportunities and collaborations.

FROM SCHEMA TO PIXELREAL USERS IN THE LOOPBUILT, SHIPPED, SOLD

I'm a fullstack engineer from Santiago, Chile, who turns ideas into shipped products — owning everything from the database schema to the last pixel of UI, and keeping things simple along the way.

I've founded and sold my own SaaS product, built data pipelines and microservices for a national examination system, and shipped frontend features for brands like Coca-Cola and Kraft Heinz. I iterate fast, with real users in the loop.

I'm deep into AI-assisted development: building agent harnesses and robust AI-driven workflows that make shipping software faster — without giving up correctness or craft.

Away from the keyboard I play in a weekly amateur football league, go kayaking, and keep a close eye on investing.

  • Founder — built & sold a production SaaS
  • Fullstack Engineer @ Tether Education
  • Shipped features for Coca-Cola & Kraft Heinz
Full story on LinkedIn

Languages

TypeScript · Java · Python · Go · SQL

Frontend

React · Next.js · Tailwind CSS · shadcn/ui · Storybook

Backend

Node.js · NestJS · Spring Boot · Django · PostgreSQL · MongoDB · Prisma · REST APIs

Cloud & Tools

AWS · GCP · Vercel · Docker · Git · Nx · Jest · OAuth 2.0 · Keycloak

Still Young by The Cat EmpireLa Travesía by Juan Luis GuerraTime by Pink FloydD'yer Mak'er by Led ZeppelinTell Me Baby by Red Hot Chili PeppersHoliday by Green Day'Till I Collapse by EminemTimeless by The WeekndKemba Walker by Eladio Carrión

A few songs I can recommend if you're looking for some fresh tunes :)

MY PROJECTS

FROM PRODUCTION SAAS PLATFORMS TO DATA PIPELINES — EVERY BUILD HERE SOLVES A REAL-WORLD PROBLEM, END TO END.

Gourmind Analytics

Multi-tenant analytics platform automating co-financed discount campaigns between banks and ~140 restaurants in Chile — statement ingestion, copay calculation, approval workflows, and an AI chat that turns questions into SQL. Built solo, shipped, and sold to the client.

  • NEXT.JS
  • SUPABASE
  • PRISMA
  • OPENAI
Screenshot of Gourmind Analytics

Programa Socio-emocional

EdTech SaaS that turns socio-emotional card games into a measurable school program: psychometric entry/exit surveys, live classroom sessions with realtime monitoring, and before/after impact reports with risk alerts for school leadership. Live in production.

  • NEXT.JS
  • SUPABASE
  • REALTIME
  • RECHARTS
Screenshot of Programa Socio-emocional

University Finder Chile

Ingests Chile's official DEMRE admission data — 2,150 programs and 1.68M applications — so students can simulate their PAES scores against real program weightings, compare careers side by side, and explore historical cutoffs.

  • NEXT.JS
  • EXPRESS
  • POSTGRESQL
  • PYTHON
  • DOCKER
Screenshot of University Finder Chile

Serverless URL Shortener

Link shortener running entirely on AWS Lambda, API Gateway, and DynamoDB, deployed with SST in one command — vanity codes, self-expiring links, atomic click counters, and per-IP rate limiting, built to serve 1M+ redirects a month for under $5.

  • AWS LAMBDA
  • DYNAMODB
  • SST
  • REACT
  • TYPESCRIPT
Screenshot of Serverless URL Shortener
In construction

Vloset

Digitize your closet with photos and let an ML model estimate each garment's real dimensions — so online retail can surface clothes that actually fit your size, cutting the guesswork and returns of buying fashion online.

  • NEXT.JS
  • NEXTAUTH
  • PRISMA
  • UPLOADTHING
Screenshot of Vloset