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Senior Product Engineer, AI

I build production AI products: voice and chat assistants, retrieval, and the admin tools a team needs to run them after launch. 15+ years across TypeScript, React Native, Next.js, and cloud. Fluent in English, Spanish, Portuguese, and Italian.

Highlights

  • 12+ years building 0→1 products for startups and growth-stage teams
  • Shipped an AI legal assistant with voice, chat, and retrieval in React Native
  • Built the bitlauncher.ai RAG chatbot and Masterbots chat prompting on production launchpad products
  • Led engineering for Wink, Costa Rica's first neobank, from architecture to launch

Experience

Software Engineer, LegalAgent

Remote • Contract • 2025

AI legal platform with voice, chat, and retrieval for case context, documents, and procedures.

  • Shipped a voice and chat assistant in React Native (Expo).
  • Built RAG for case context and document summaries.
  • Built the admin with Microsoft SSO, documents, and retrieval.
  • Shipped bilingual voice with realtime transcription and speech synthesis.
  • Tuned the AI agent's persona and AI SDK tool-calling from attorney usage.

Product Engineer, Bitlauncher

Remote • Full-time • Nov 2023 – Nov 2025

AI and crypto launchpad with retrieval, research tools, and specialized assistant work.

  • Owned product direction, roadmap priorities, and delivery planning while remaining hands-on in architecture.
  • Built the bitlauncher.ai chatbot with RAG and tools for current news and video.
  • Implemented Masterbots prompting and AI-assisted internationalization.

Software Engineer, Opyn

Remote • Contract • Oct 2024 – Feb 2025

Options protocol on Arbitrum with a trading interface and indexed onchain data.

  • Prototyped an LLM assistant for onboarding and support.

Lead Engineer, Bitcash

Remote • Part-time • Jan 2020 – Jul 2021

Fiat-to-stablecoin and crypto exchange with peer-to-peer trading, chat, and browser signing.

  • Built the React, Vite, Node.js, PostgreSQL, Hasura, and Google Cloud stack.
  • Built the peer-to-peer exchange, realtime chat, and matching engine.
  • Built WebAuthn key management for in-browser transaction signing without an external wallet.

Lead Engineer, Wink

On-site • Full-time • Apr 2015 – Mar 2018

Costa Rica's first neobank: React Native app, AWS backend, partner-bank APIs, and biometrics (holawink.com).

  • Built the React Native app and AWS backend.
  • Built biometric KYC with a React Native native bridge.
  • Coordinated with partner-bank teams and vendors on the first version.
  • Integrated partner-bank APIs so deposits, transfers, and account data moved through the app.

Additional experience

Between those roles I led engineering at EOS Costa Rica (2018–2020) through the EOS mainnet launch and a private-chain MVP for Grant Thornton Labs, and worked on Emanate's streaming platform (2019–2020). From 2021 to 2023 I built an NFT indexer and marketplace at RareMint (2021–2022) and a WebGL wallet connector for ZTX (2022–2023). Earlier I led frontend for AMC Networks' YEAH! (2012–2014) and built card marketing products at American Express (2010–2012).

Skills

  • Languages: TypeScript, JavaScript, SQL
  • AI / ML: LLMs, OpenAI, AI SDK, RAG, Realtime Voice
  • Frontend: React, Next.js, React Native, Expo, Tailwind, shadcn/ui, TanStack
  • Backend: Node.js, PostgreSQL, Supabase, Redis, GraphQL
  • Cloud & Infra: AWS, GCP, Vercel, Docker, Serverless

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