Hi, I'm Guilherme

Backend Engineer building AI-powered products that actually ship.

4+ years shipping production systems in banking and global industry - now bringing that same discipline to features built on LLMs.

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C#
.NET
ASP.NET Core
Azure
Oracle
SQL Server
PostgreSQL
TypeScript
React
Next.js
Node.js
Kafka
RabbitMQ
Claude Code
MCP

About

I'm a backend engineer working mostly with C#, .NET and Azure. For the past 4+ years I've shipped production systems - REST APIs, identity flows, messaging, observability - in places where things breaking actually matters: regulated banking, global industry, client-facing platforms.

These days I lead backend design and mentor engineers at a software studio in São Paulo, working daily inside an AI-augmented workflow (Claude Code, MCP). I treat LLM features the way I treat any production system: contracts, evals, observability. Reliable, not just a demo.

On the side, I'm building a ticketing product end-to-end - scoping, frontend, backend, deploys and everything in between. Working outside my .NET comfort zone keeps my TypeScript and React honest.

Projects

Baila
Ticketing platform for events, built end-to-end: product scoping, payments, ticket issuance and deploys.
- TypeScript
- React
- Next.js
- Payments
arquivo.ai
Coming soon
An open archive of knowledge written with AI. The first courses cover enterprise blockchain, LLMs and transformers, and system design.
- AI
- Python
- Static Site
Wedding Platform
Coming soon
Multi-tenant platform for wedding sites: guest RSVP, gift registry with Pix, and an admin panel for guest lists, seating and finances.
- TypeScript
- Next.js
- Supabase
- Postgres