Software Engineer & Fullstack Developer

FelipeGorostiaga

Engineer, builder, creator.

An engineer driven by passion and creativity. I've spent my career building products for millions of people, and turning ideas into real things is still my favorite part of the job.

Portrait of Felipe Gorostiaga
Experience

Where I've been building

Senior React Software Engineer

Feb 2024 – NowCurrent

Humand · Senior front-end engineer on the Humand platform.

  • Drive key technical decisions for the Service Management, Forms and Surveys modules, used by millions of people around the world.
  • Build responsive, accessible features for the web and admin apps with React, TypeScript and Material UI, and contribute to the design system they share.
  • Lead framework upgrades across the apps, such as the move from React Query v3 to v5.
  • Mentor colleagues and review pull requests to keep the codebase healthy.
  • Interview engineering candidates and help grow the team.
ReactTypeScriptMaterial UIReact QueryZod

Prompt Engineer

Jun 2023 – Feb 2024

Scale AI (freelance) · Freelance reviewer and task writer for LLM training data.

  • Reviewed model answers to computer-science and STEM prompts for correctness, reasoning and clarity.
  • Rewrote weak responses into reference-quality answers.
  • Wrote prompts and evaluation criteria that expose where models fail.
AIPrompt EngineeringFine-tuningLLM evaluationComputer Science

Senior Fullstack Developer

Mar 2023 – Feb 2024

Banco Galicia · Transactional team of the bank's B2B web platform.

  • Built React screens that match the design team's high-fidelity specs.
  • Created configurable components shared by several teams in a micro-frontend architecture.
  • Developed, tested and deployed NestJS microservices with a focus on the security of transactional flows.
ReactNestJSNext.jsMicro-frontends

Backend Developer

Nov 2022 – Mar 2023

Banco Galicia · Core team of the bank's B2B mobile app.

  • Designed, tested and deployed the NestJS microservices behind the mobile app.
  • Shaped the technical decisions of its backend-for-frontend (BFF) layer.
NestJSMicroservicesBFF

Software Engineer

Apr 2022 – Dec 2022

Dome.xyz (freelance) · Lead developer of a four-person team at a crypto startup.

  • Designed the architecture around cost, scalability and performance.
  • Built the REST API, the web app, scheduled jobs and serverless functions.
  • Integrated several web3 providers and APIs.
  • Ran the infrastructure on AWS and Vercel and advised on UI/UX.
NestJSNext.jsPostgreSQLAWSVercel

Junior Developer

Dec 2021 – Nov 2022

Banco Galicia · Core team of the bank's B2B web platform.

  • Built React components for the business web app.
  • Developed, tested and deployed NestJS microservices.
ReactNestJSNext.js

Business Intelligence Developer

Jun 2020 – Dec 2020

Bolsas y Mercados Argentinos (BYMA) · Investor relations team at Argentina's stock exchange.

  • Built interactive dashboards on historical market activity.
  • Wrote scheduled jobs that parse each day's market data.
  • Helped analyze and present the quarterly reports.
PythonPower BI
Projects

Things I've shipped

Side projects I've designed and built, live and open to explore.

Screenshot of Greenboom
greenboom.xyz

Greenboom

Greenboom keeps every watering, feeding and growth note in one calm place, so your plants get what they need, on the day they need it.

Next.jsTailwind CSS
Visit Greenboom
Screenshot of Splitsea
splitsea.dev

Splitsea

Track expenses and split them, effortlessly. Splitsea helps groups track shared expenses, split bills fairly and stay on top of balances, across currencies and across time. An AI feature reads your credit card statements and generates the month’s expenses, built with strong security measures.

Next.jsReact 19TypeScriptTailwind CSSSupabaseClaude / Gemini
Visit Splitsea
Skills

My weapons of choice

01Frontend

React

Declarative UIs built from small, composable components.

02Framework

Next.js

Full-stack React with nested routing, middleware and multiple rendering strategies.

03Language

TypeScript

JavaScript with types: better tooling and fewer surprises in production.

04Runtime

Node.js

Event-driven, non-blocking I/O for real-time and streaming apps.

05Backend

NestJS

Modular, scalable server-side apps on top of Express or Fastify.

06Styling

Tailwind CSS

Utility-first styling on a consistent, fully customizable system.

07UI kit

Material UI

Accessible React components, themed to fit the product.

08AI

AI-first engineering

Coding agents do the legwork, my taste decides what ships.

Off the clock

Things I do outside work

Contact

Let's get in touch.

Looking for a developer, or just want to talk about the meaning of life? Send me a message.

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