Senior Full-Stack Engineer & Applied AI

Building AI-native products — LLMs, agents, and automation — with international startups.

LinkedInGitHubfermellone@gmail.comCV

Skills

  • Applied AI

    OpenAI APIs, Anthropic Claude, LangChain, LangGraph, RAG, vector DBs, agents, fine-tuning, prompt engineering

  • Full-Stack

    TypeScript, Python, React, Next.js, Node.js, PostgreSQL, AWS, Firebase

  • Blockchain / Web3

    Solidity, ERC-3643, Polygon, Wyoming LLC structures

Experience

  • Apr 2026 – Present

    Entrepreneur in Residence / Product & AI Strategy

    InzaiQ

    Wyoming, US (remote)

    ReactNode.jsPythonLLMsBlockchain / Web3

  • Apr 2025 – Mar 2026

    Founding Engineer

    Autograph (NFX-backed)

    San Francisco, US (remote)

    Next.jsElevenLabsTwilioDeepgramOpenAI

  • Sep 2024 – Mar 2025

    Software Engineer

    VeXtar

    Paraguay (remote)

    Next.jsPrismaPostgreSQLAWS

  • Apr 2024 – Sep 2024

    Senior Software Engineer

    Data Voices

    Argentina (remote)

    ReactReact NativeNodePythonRAGYOLOWhatsApp/Telegram bots

  • Dec 2023 – Sep 2024

    Senior Software Engineer

    Aplicable AI (500 Startups LatAm / Platanus alumni)

    US (remote)

    SvelteKitFirebaseLangChainOpenAIRAGWebLLM

  • Aug 2022 – Oct 2023

    Senior Software Engineer · Team Lead

    Penguin Lab

    Paraguay

    ReactSvelteKitFlutterNode.jsPostgreSQLLangChainOpenAI

  • Nov 2021 – Jul 2022

    Software Engineer · Bootcamp Instructor

    Penguin Academy

    Paraguay

    PythonNode.jsSvelteKit

  • Jun 2020 – Sep 2021

    Frontend Developer

    GolStats

    Mexico (remote)

    VueNuxt

Projects

  • Walter — AI Voice Interviewer (Autograph)

    Next.jsElevenLabsTwilioDeepgramOpenAI

    AI-led voice interviews for life-story preservation. Built as Founding Engineer at NFX-backed Autograph.

  • YC Job Finder

    Node.jsExpressLangChainVueNuxt

    Similarity-search tool for finding YC companies that match a user's profile and target company description.

  • LLM Utility

    SvelteKitTypeScriptArtificial AnalysisDrizzle ORM

    Benchmark-driven MVP for recommending quality-price optimal AI models from Artificial Analysis benchmark snapshots.

  • Spotify Playlist Generator

    Next.jsReactSpotifyClerk

    Spotify playlist generator deployed at spotify.fermellone.dev.

  • LongMemo

    Next.jsOpenAIPineconeClerk

    Long-term memory app for capturing, searching, and retrieving personal knowledge with AI.