Leonardo Fissicaro de Mello_

Software engineer · Belo Horizonte, BR

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$ about

// engineer · co-founder · eternally tweaking

Software engineer based in Belo Horizonte, Brazil. I build pragmatic web platforms — from data infrastructure to AI-powered tooling — and care a lot about craft, performance, and how a product actually feels in the hand.

> Computer Science Degree

UniCEUB · 2020 — 2024

Type: Document · Rarity: Uncommon

Grants: Algorithms, Systems Design, Data Structures

"It looks heavy, but mostly with potential."

> now

Co-founding GoodStream. Shipping the engineering side of a social-network engine — live streaming, monetization, recommendations — that creators and brands run on their own domain.

> from

Belo Horizonte, MG. Mineiro until the end — pão de queijo for breakfast, mountain views from the kitchen, and the slow start that mineiros are famous for.

> into

  • pão de queijo
  • synths
  • cli tools
  • Cruzeiro
  • local-first apps
  • static sites

> reading

Designing Data-Intensive Applications — Martin Kleppmann. Slow re-read; the kind of book you owe yourself a second pass on.

$ work

  1. GoodStream 2025 — present
    Co-founder & Software Engineer

    Social-network engine for creators and brands — live streaming, short-form content, and monetization on a custom domain. Full-stack engineering and infra.

  2. Me4U 2024 — 2025
    Software Engineer

    AI-companion platform that turns creators and celebrities into chat-ready AI versions of themselves. Full-stack engineering on the consumer product.

  3. Serasa Experian 2023 — 2024
    Software Engineer

    Brazil's largest credit bureau (since 1968, part of Experian) — credit scoring, identity, and fraud-prevention products at national scale.

  4. Agrosatélite 2022 — 2023
    Software Engineer

    Geospatial intelligence built on satellite imagery — monitoring crops, supply chains, and zero-deforestation commitments across Brazilian agribusiness.

$ stack

Frontend

  • TypeScript
  • SvelteKit
  • Svelte 5
  • Tailwind v4

Backend

  • Hono
  • Drizzle
  • Cloudflare Workers

Infra

  • Cloudflare
  • Vite
  • pnpm/turbo
  • Biome

AI/Data

  • Braintrust
  • LLM evals
  • Prompt design

$ contact

[email protected] LinkedIn GitHub