I am a Full Stack Developer focused on building reliable, maintainable, and production-ready software. I work across modern web applications, backend platforms, cloud environments, data workflows, and AI-enabled product experiences.

On the frontend, I build with React, Next.js, TypeScript, SSR patterns, and performance-focused interfaces. On the backend, I work with Node.js, NestJS, Java/Spring Boot, and C#/.NET, designing APIs, integrations, domain models, and scalable services.

I am especially interested in teams where software quality, ownership, and execution matter: product engineering, platform work, backend-heavy full stack roles, and systems that require clean architecture, reliability, and operational discipline.

• Full stack development with React, Next.js, TypeScript, Node.js, and NestJS
• Backend architecture with APIs, domain modeling, integrations, and data workflows
• Practical database experience with PostgreSQL, MongoDB, MySQL, and Supabase
• Production-minded engineering with Docker, CI/CD, cloud services, and performance concerns
• Applied AI work with LLM integrations, RAG, agents, embeddings, and streaming pipelines
• Strong focus on clean code, testing, maintainability, and predictable delivery

• Built and evolved full stack products in fast-moving environments with responsibility across architecture and execution
• Delivered backend services and integrations for B2B and SaaS systems with emphasis on reliability and scalability
• Worked on high-traffic digital products involving SSR, performance optimization, and production support
• Contributed to AI platforms with multi-agent workflows, custom tooling, and operational improvements

• Shipping useful software without sacrificing maintainability
• Understanding existing systems before changing critical flows
• Balancing speed, technical quality, and production stability
• Writing software that is easier to evolve, observe, and operate

• GitHub: github.com/teuzowebdeveloper9
• LinkedIn: Mateus da Silva Oliveira
• Portfolio: my-new-portfolio-ten-orpin.vercel.app
• AnotEX.ai: anoteexai.tight-resonance-42ff.workers.dev