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Full-Stack Developer

Building digital|

Senior full-stack developer with over 15 years of experience building web applications, APIs, and digital products for businesses of all sizes. Based in São Paulo, Brazil.View GitHub
  • ReactReact
  • Next.jsNext.js
  • TypeScriptTypeScript
  • AngularAngular

From startups to enterprise companies, I've helped clients transform their ideas into powerful digital solutions. My focus is on writing clean, maintainable code that serves both technical requirements and business goals.

I specialize in PHP and Node.js ecosystems, with deep experience in React and Angular for frontend development. I'm also proficient with cloud infrastructure (AWS, Azure, GCP) and DevOps practices.

15+Years Experience
50+Projects Delivered
30+Happy Clients
Carlos O Carvalho
Carlos O CarvalhoFull-Stack Developer
  • TypeScript
  • Node.js
  • React
  • Next.js
  • Angular
  • PHP
  • Laravel
  • PostgreSQL
  • Docker
  • Google Cloud

Featured Projects

A selection of projects that showcase my expertise and passion for building quality software.

  1. Biolov - melhoramento de plantasBiolov - melhoramento de plantasnextnestjsmongodb
  2. Conecta SementesConecta Sementesphpmysqlnginx
  3. Guia de Paranaguá | Turismo, Passeios e Ilha do MelGuia de Paranaguá | Turismo, Passeios e Ilha do Melturismopasseiosilha do melparanaguá
  4. VaultDB - Backup Automático com BYOK para Bancos de DadosVaultDB - Backup Automático com BYOK para Bancos de Dadosnestjsedgeredis
  5. O4Flow — Automação com IA para empresas que querem escalarO4Flow — Automação com IA para empresas que querem escalarnextjsredis

What I can do for you

End-to-end development services tailored to your specific needs.

  1. Web Development

    Custom web applications built with modern frameworks. Fast, secure, and scalable solutions.

  2. Mobile Apps

    Cross-platform mobile applications with React Native. One codebase, iOS and Android.

  3. DevOps & Cloud

    Infrastructure setup, CI/CD pipelines, and cloud deployment. AWS, Azure, and GCP.

  4. API Development

    RESTful and GraphQL APIs designed for performance. Seamless integration with any frontend.

  5. Legacy Modernization

    Upgrade old systems with modern architecture. Improve performance and security.

  6. Technical Consulting

    Architecture reviews, code audits, and technical guidance for your tech stack.

How I work

A structured approach to deliver high quality results.

01

Discovery

Understanding your goals, requirements, and constraints to define the project scope.

02

Planning

Creating technical specifications, architecture design, and development timeline.

03

Development

Building your application using agile sprints with regular updates and feedback.

04

Launch

Deployment, testing, and ongoing support to ensure your success.

Productized Services

Fixed scope, fixed price, predictable delivery.

  1. Technical Audit

    Express Technical Audit

    Uncover risks and quick wins in your codebase in one week.

    Learn more

  2. MVP Development

    MVP in 60 Days

    Go from validated idea to live product, fast.

    Learn more

  3. Process Automation

    Process Automation

    Eliminate repetitive work and connect your tools.

    Learn more

What Clients Say

Real results, real clients — from MVPs to enterprise systems.

  • Carlos delivered a complex API integration well ahead of schedule. His technical depth and clear communication made the whole process smooth. I'd hire him again without hesitation.

    Roberto MendesTech Lead · Fintech Brasil

  • We went from idea to launched MVP in under 60 days. Carlos kept us on track, challenged assumptions that could have cost us time later, and built something we're proud to show investors.

    Ana LimaCEO · MedStart

  • The automation pipeline Carlos built eliminated 15 hours of manual work per week for our team. ROI was positive within the first month.

    Thiago SouzaProduct Manager · Retail Corp

Free Resource

Get the Free Technical Checklist

A practical checklist used in every project: architecture decisions, security baseline, performance foundations, and launch readiness. Download it free.

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Let's work together

Have a project in mind? I'd love to hear about it. Let's discuss how I can help.

Email
[email protected]
Location
São Paulo, Brazil