Jonathan Cardoso
7+ years turning complex products into reliable systems with React, Node.js, TypeScript and Python. Creator of ASO360, a SaaS for occupational health clinics that I built and operate. Software Engineer at Getrak since March 2024, taking part in the architectural restructuring of a real-time vehicle tracking platform with microservices and micro frontends.
7+
years of experience
1M+
concurrent users (Getrak)
5,000+
concurrent users (SolarMarket)
13,100+
occupational health certificates generated on my own SaaS
Technologies
What I use professionally, from the frontend to infrastructure.
AI-assisted development with GitHub Copilot and Claude Code, always with human review.
Experience
Where I worked and the impact of the work, most recent first.
Took part in the architectural restructuring of a real-time vehicle tracking platform that had scalability and system-design limits.
2 years 10 months
Built and scaled a data-intensive platform handling large volumes of financial and user data in real time.
Natal, Brazil
Web systems and landing pages with Django, React and WordPress.
Work
Products and platforms I worked on, with what can be shared publicly.
A SaaS for occupational health clinics, covering occupational health certificates, exams, patient forms and billing.
Architectural restructuring of a real-time vehicle tracking platform, with microservices and micro frontends.
A business proposal generator for the solar energy industry, using artificial intelligence. A platform handling large volumes of financial and user data in real time.
A software house. Web systems and landing pages with Django, React and WordPress, with performance gains and subscription payment integration.
My first job as a developer: lead-capture websites for companies in many segments.
Beyond the day job
ASO360 is a SaaS I built and operate to manage occupational health clinics: certificates, exams, patient forms and billing, with automated PDF generation and regulation-aware checks.
ASO is the Occupational Health Certificate, required by Brazilian labor regulation.
A real product in use, with subscription plans and a free trial.
13,100+ certificates, 13,000+ exams and 14,000+ registered lives, according to the product website.
Encrypted storage with cloud backups, built with LGPD compliance in mind.
Numbers published on the product website, subject to change.
Blog
Notes on software engineering, architecture and product.
How I think about using GitHub Copilot and Claude Code: AI speeds up the work, but responsibility stays with whoever ships the code.
Setup, bug resolutions, memory and performance issues, versioning and WebView, from my first React Native app.
Making a portfolio more performant with Gatsby, Styled Components, Netlify and GraphQL.