Architecture and engineering case studies. Each one covers the context, the problem, the decisions taken, and what they cost.
Sales of finite, individually numbered inventory, opening at an announced time. The same number can never be sold twice, and the opening spike cannot take the database down.
My role
Platform architecture, backend engineering, data modeling, asynchronous pipelines, and infrastructure.
Transport operations platform serving multiple client environments and integrating with vehicle tracking hardware.
My role
Senior Software Engineer, with architecture-level responsibility over backend, database, and production infrastructure.
A CRM and operational communication platform focused on WhatsApp-based customer service, reminders, billing, and workflow automation.
My role
Product architecture, backend engineering, frontend decisions, infrastructure, integrations, and production operations.
A financial planning and cash-flow visibility platform: upcoming obligations, recurring entries, and projections.
My role
Software architecture, backend and frontend development, financial domain modeling, authentication, deployment, and infrastructure.
A free study platform for Brazilian K-12 and the national university entrance exam, built with no backend and no accounts: progress lives on the student's device.
My role
Architecture, development, education domain modeling, accessibility, testing, infrastructure, and deployment.
A campaign and user-participation platform with access peaks concentrated into short windows and non-negotiable campaign deadlines.
My role
Senior Software Engineer, focused on backend performance, Node.js services, database, and incident response.
WordPress to Next.js migrations, static sites on AWS S3 and CloudFront, with SEO preserved and performance gained.
My role
Architecture, development, infrastructure, and deployment.