Open for consulting
Clean code. Clear ideas.
I'm João, a software engineer from Brazil. I build backend systems, run cloud infrastructure and teach software engineering. Here you'll find my consulting work, my products and what I write.
- Readability
- Maintainability
- Scalability
- People
Consulting
Fixed-scope technical diagnosis for companies that need more control over their cloud and backend, with a written plan they can act on.
Products & work
Software products I build and run, and the experience behind my consulting.
Apgees ERP
Management software for small businesses. Apgees Clubes, its subscription and access module for renewals, is part of the same product.
Gesttock
Real-time inventory management, focused on data consistency and concurrency at scale.
1FinOps
Cloud cost management for AWS, Azure and GCP: real-time cost monitoring, forecasts, optimization insights and budget alerts.
MyNutriFit
AI-powered meal planning and nutrition tracking, with personalized plans, macro tracking and grocery lists.
Writing
Technical notes on production systems, architecture and the practice of software engineering.
Internationalization Starts With Business Rules, Not Translation
Internationalizing software is not mainly translation. Four markets show how business rules, fiscal documents, identifiers, and workflows reshape architecture.
Designing Systems That Outlive Frameworks
Frameworks change faster than systems. Sustainable architecture protects business behavior, data, and operational knowledge without abstracting everything.
Why Business Rules Age Faster Than Code
Software rarely becomes legacy because of its language. It becomes legacy when changing business rules outgrow the architecture built to contain them.
Let's talk
Have a system that needs a second look, or a product idea to discuss? Start with a short message.