Carlos Ferrer Online — Four Eras of the Web
A curriculum and portfolio interpreted through four eras of the Web.
- Next.js
- React
- TypeScript
- CSS
- Tailwind CSS
- Vitest
- Playwright
Software, product, and business
I work from problem framing to production, connecting architecture, product, design, and business to build software that can evolve.
Featured repositories
Updated in 2026Underground PB
A cultural platform documenting Paraíba’s independent scene: bands, events, venues, news, and memory.
- Python
- Django
- PWA
Experience
Byte Criativo
Founder & CEO / Software Engineer
I lead the software house while remaining hands-on: I work directly across strategy, architecture, product, design, and engineering.
- Product strategy and architecture
- Backend, frontend, and infrastructure
- UI/UX and application design
- Automation and integrations
- Custom solutions and continuous evolution
Jampa Ruby
Organizer and speaker
I run Jampa Ruby, Paraíba’s local Ruby and Ruby on Rails community: I organize its meetups and talks, and take the stage as a speaker too.
- Organizing meetups and talks
- Speaking on Ruby and Ruby on Rails
Lepidus Tecnologia
Web Developer
I built web applications for academic journals, events, and scientific groups, and contributed plugins to Public Knowledge Project software.
- Scholarly publishing applications
- Plugins for OJS, OMP, and OPS (PKP)
- REST architecture and APIs
- Java, JavaScript, SQL, HTML, and CSS
Technologies & areas
Backend
Web applications, APIs, and business rules.
- Ruby
- Ruby on Rails
- Python
- Django
- REST APIs
- Web architecture
Frontend
Accessible, responsive, product-led interfaces.
- JavaScript
- TypeScript
- React
- Next.js
- HTML
- CSS
- Tailwind CSS
- HTMX
Data
Application data modeling and persistence.
- PostgreSQL
- SQLite
- SQL
Infrastructure / DevOps
Pragmatic delivery, observability, and operations.
- Linux
- Git
- GitHub
- Docker
- Cloudflare
- Render
- Vercel
AI & automation
AI applied to real products and workflows.
- OpenAI APIs
- LLMs
- AI Agents
- LangChain
- AI-assisted development
- AI integrations
Product
From problem and prototype to production solution.
- Product architecture
- UI/UX
- Application design
- Prototyping
- Automation
- Integrations
Education
Postgraduate degree in Software Engineering
Faculdade Focus
2023Web Development bootcamp
Le Wagon
2022Associate degree in Systems Analysis and Development
Universidade Estácio de Sá
2021Bachelor of Laws
Centro Universitário de João Pessoa (UNIPÊ)
2016README.md
Four interfaces. One content model. One codebase.
Next.js · React · TypeScript · CSS · Vitest · Playwright
contribution graph (decorative)