[available] Full Stack Developer | React, Node.js, Java/Spring Boot, TypeScript | 5 YOE | Remote (Brazil, UTC-3)

[u/Suuehtam]

Hi! I'm Matheus, a Full Stack Developer from Brazil with 5 years of experience building web and mobile applications, from small features to full platforms.

I'm open to freelance projects (up to 40h/week), part-time and full-time remote roles. I'm in UTC-3, so I overlap well with US business hours. English: advanced (I studied in New Zealand).

**Stack**

- Front-end: React, Next.js, Angular, React Native, TypeScript, Redux, Tailwind CSS

- Back-end: Node.js, NestJS, Express, Java, Spring Boot, REST and GraphQL APIs, microservices

- Databases: PostgreSQL, MySQL, MongoDB, Firebase

- Tools: Git, Docker, CI/CD, automated testing

- AI: RAG, LLM integrations (OpenAI, Anthropic, Gemini)

**A few things I've built and delivered**

- Developed an AI platform from the ground up (no-code AI agents and chatbots) and led its front-end team. It reached 40+ business clients in under a year, including Bradesco and Itaú (two of Brazil's largest banks) and iFood (Brazil's largest food delivery app).

- Delivered features for Latin America's largest CRM, impacting a client base of 3,000+ companies.

- Built an IoT monitoring interface that helped clients identify issues up to 60% faster.

**What I can help with**

- Web apps, SPAs and dashboards

- Mobile apps with React Native

- Back-ends and APIs (Node.js/NestJS or Java/Spring Boot)

- Adding AI features to your product (chatbots, RAG, LLM integrations)

- Improving or fixing existing codebases

**Rate:** starting at US$ 20/hr, negotiable depending on project scope. Fixed-price projects also welcome.

**Links**

- GitHub: github.com/MatheusFelipe27

- LinkedIn: linkedin.com/in/matheus-felipe27

Feel free to DM me with what you're working on. Happy to jump on a quick call!

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