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Working from home
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Achievements

Achievement: Pair Extraordinairex3Achievement: Pull Sharkx3Achievement: YOLOAchievement: QuickdrawAchievement: Arctic Code Vault Contributor

Achievements

Achievement: Pair Extraordinairex3Achievement: Pull Sharkx3Achievement: YOLOAchievement: QuickdrawAchievement: Arctic Code Vault Contributor

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Rinava/README.md

Lara Mateo, Tech Lead and AI Product Engineer. Open to new work. Based in Buenos Aires, remote with US overlap.

Portfolio LinkedIn Email

About

Six years building software in regulated, high-stakes domains: healthcare billing, fintech payments, the kind of systems where a small mistake has real consequences. These days I build LLM-powered products with Claude and the Vercel AI SDK, I work end to end rather than only the frontend, and I have a habit of catching the risks others miss, like a HIPAA compliance gap I found at design time, before any code shipped.

Cat enthusiast and dog fan, building from Buenos Aires and sharing tools (often open source) along the way.

Open to remote Tech Lead and AI Product Engineer roles, US overlap.

What I'm building

  • Pagewise: a Claude-powered reader that summarizes any web page at three depths (brief, detailed, or ELI5), with grounded follow-up Q&A and shareable, read-only links. Free, no signup.
  • Marksight: an open-source Markdown editor with live preview (React, Next.js, CodeMirror) that grew to 200+ users organically, through search and referrals.
  • More AI experiments and side projects live on laramateo.com.

Tech I work with

AI & LLM

Claude Vercel AI SDK RAG Prompt Engineering AI Agents

Frontend

React Next.js TypeScript Tailwind CSS TanStack

Backend & Data

Node.js Prisma MySQL MongoDB AWS S3

Testing & Observability

Jest Vitest Playwright Datadog GitHub Actions

GitHub activity

Lara's contribution graph rendered as a snake game
Built from scratch in Buenos Aires. More at laramateo.com.

Pinned Loading

  1. MarkSight MarkSight Public

    TypeScript 8 3

  2. words-of-encouragement words-of-encouragement Public

    Write a message to someone who needs it.

    CSS

  3. chat-bot chat-bot Public

    TypeScript

  4. Santiago-j-s/mermaid-diagram-tool Santiago-j-s/mermaid-diagram-tool Public

    TypeScript 5

  5. public-apis/public-apis public-apis/public-apis Public

    A collective list of free APIs

    Python 445k 48.9k