Senior Software Engineer · building for the web since 2009 · Campinas, Brazil

I work mostly on the frontend — React, Next.js and TypeScript — with enough backend to take a product from the first conversation to production. Today I'm a Senior Software Craftsperson at Codurance, consulting on Clean Code, TDD and architecture for international clients. On the side, I take on selected freelance projects.

Before that: Avenue Code, Dextra (acquired by CI&T), Venturus. Along the way I've led a team of nine, trained 160+ people as a technical instructor, and turned an 8-hour critical process into a 10-minute one.

Portfolio · Blog · LinkedIn · Instagram · Email

• Gota de Cura — institutional site for a social project, rebuilt in 2026
• Portal da Morada — internal portal for a nonprofit organization
• Sympro — landing page for a property management platform
• GoLaser Barão Geraldo — site and booking flow for an aesthetics clinic
• Yane Leitão — personal brand site for a nutritionist

More, with the reasoning behind each one, at adrianomaringolo.dev/projects.

• The Open/Closed Principle in Practice — extending a React component without reopening it
• The Single Responsibility Principle in Practice — refactoring a real component, and where the rule backfires
• SOLID in React — a visual introduction to the five principles
• Why Every Developer Needs a Professional Portfolio

Every post is published in Portuguese and English.

TypeScript React Next.js Node.js Tailwind CSS Testing Library Vitest Angular C#/.NET Supabase Firebase PostgreSQL Vercel

_{Open to freelance work and interesting conversations — the fastest way to reach me is here.}