Johanes Ferreira "Joe"
Deep expertise in Java microservices and enterprise systems. Building full-stack applications with Rails and React. Creating AI workflows that shift engineering time from routine code to architecture and product thinking.
I build full-stack applications and AI-powered systems, from Rails APIs and React interfaces to LLM-driven extraction pipelines and development automation platforms.
End-to-End Ownership
I specialize in owning systems end to end, from architecture and database design to backend services, distributed processing, frontend delivery, and AI integration. My work focuses on turning complex, manual workflows into reliable, automated systems at scale.
AI-Driven Platforms
More recently, I've focused on AI-driven platforms, including multi-provider LLM extraction pipelines and development automation systems powered by specialized agents that handle routine tasks across the SDLC, freeing engineers to focus on architecture and product design.
Brazil · Portugal · France · South Korea · USA · Poland · Spain
Finance · Telecommunications · Retail · Construction · Agriculture
My background spans Java, SOA architecture, and test automation, building a strong, practical understanding of the full software development lifecycle. Today, I apply that foundation to design and deliver complete, production-ready systems.
“My best work isn't measured by lines of code, but by the time I've given back to my teammates and clients around the world. Because in the end, time is the most valuable currency we have.”
What People Say
What I Can Do
For Your Business
Available for project-based engagements and ongoing retainers.
AI Process Automation
- Turn manual, repetitive workflows into reliable AI-powered systems
- Document extraction, data processing, intelligent matching
- Multi-provider LLM architecture with failover for reliability
Full-Stack Application Development
- End-to-end systems from database design to production UI
- Ruby on Rails, React/TypeScript, Java/Spring Boot
- Multi-tenant SaaS, event-driven architectures, API design
AI Integration Consulting
- Integrate OpenAI, Gemini, Claude, or OpenRouter into existing products
- Prompt engineering, validation frameworks, cost optimization
- Multi-provider strategies for reliability and performance
DevOps & CI/CD Automation
- GitHub Actions, Docker, Kubernetes deployment pipelines
- Automated testing, build optimization, monitoring
- Developer workflow tooling that reduces friction
Career Timeline
Selected Work
Let's work
together.
Have a project in mind or need help with AI automation? I'd love to hear from you. Available for project-based engagements and ongoing retainers.