I will build secure backend apis with nodejs and express

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Andre Carvalho

About this gig

I build secure, reliable backend systems using Node.js, Express, and PostgreSQL.

With hands-on experience developing full backend systems, including JWT authentication with refresh tokens, role-based access control, and IDOR-prevention middleware, I focus on writing clean, maintainable code that follows security best practices from day one.

What I can help you with: REST API design and development, database design and optimization with PostgreSQL, user authentication and authorization systems, backend architecture for web applications, bug fixes and code reviews.

I currently work as a Data Protection Officer for a professional regulatory council, where I also built and maintain internal management systems from scratch, so I understand both the technical and compliance side of building software that handles real user data responsibly.

I communicate clearly, deliver clean documented code, and I'm happy to explain technical decisions in plain language if you're not a developer yourself.

Let's discuss your project, send me a message before ordering if you have specific requirements!

Get to know Andre Carvalho

Andre Carvalho

Backend Developer and LGPD Compliance Specialist

  • FromBrazil
  • Member sinceSep 2026
  • Avg. response time2 hours
  • Languages

    Portuguese, English
Sou desenvolvedor backend (Node.js, Java/Spring Boot, PostgreSQL) e especialista em compliance com a LGPD, atuando como Encarregado de Dados (DPO) formalmente designado em um conselho profissional. Construo sistemas seguros do zero — autenticação, APIs e automações — com boas práticas de proteção de dados desde o design. Já desenvolvi sistemas de gestão completos e ferramentas de auditoria e adequação à LGPD. Ofereço tanto desenvolvimento backend sob medida quanto consultoria em compliance com a LGPD.

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