Gabo EsquivelPDF

Senior Product Engineer, Full Stack

I build the interface and the services behind it, on web and mobile. 15+ years across TypeScript, React, React Native, Next.js, Node.js, PostgreSQL, and cloud. Fluent in English, Spanish, Portuguese, and Italian.

Highlights

  • 12+ years building 0→1 products for startups and growth-stage teams
  • Led engineering for Wink, Costa Rica's first neobank, from architecture to launch
  • Built token bridge and auction flows across contracts, wallet state, indexed data, and interface
  • Delivered full-stack systems in fintech, AI, Web3, marketplaces, and consumer software

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.

Product Engineer, Bitlauncher

Remote • Full-time • Nov 2023 – Nov 2025

Helped take Bitlauncher from concept through delivery, owning product direction, technical decisions, and hands-on implementation.

  • Owned product decisions and delivery planning while architecting the full stack.
  • Built the launchpad on Next.js 14, Supabase, viem, and wagmi.
  • Built token bridge and auction flows across contracts, wallet state, indexed data, and interface.
  • Indexed transactions in Supabase for queries, subscriptions, and analytics.

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.

Lead UI Engineer, AMC Networks

Hybrid • Full-time • Nov 2012 – Apr 2014

Interactive streaming movie service YEAH! (SXSW 2013 launch): classic genre films with chapter navigation, in-player extras, and Brightcove.

  • Built the interactive movie-player frontend.
  • Wired Brightcove for streaming, chapter playback, and back-office editing.
  • Built Facebook identity, sharing, and in-player extras.

Additional experience

Between 2017 and 2023 I worked on blockchain products: Knowledge (2017–2018), EOS Costa Rica (2018–2020) as lead engineer, Emanate (2019–2020), an NFT marketplace and indexer at RareMint (2021–2022), and the ZTX virtual world (2022–2023). More recently I built the trading interface and onchain data layer for Opyn (2024–2025). At American Express (2010–2012) I built card marketing products and moved a frontend from Dojo to jQuery.

Skills

  • Languages: TypeScript, JavaScript, SQL
  • Frontend: React, Next.js, React Native, Expo, Tailwind, shadcn/ui, TanStack
  • Backend: Node.js, PostgreSQL, Supabase, GraphQL, Redis
  • Cloud & Infra: AWS, GCP, Azure, Docker, Vercel, Terraform, Serverless
  • AI & Web3: LLMs, AI SDK, RAG, EVM, Viem, Wagmi, Solidity

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