This position is listed on behalf of a partner company, which manages all applications and next steps. Our partner is looking for a Desenvolvedor(a) Full Stack Sênior (Node.js, PHP & React) based in Brazil. Join a technology consulting environment where software engineering, data, and artificial intelligence come together to solve complex business challenges. As a Senior Full Stack Developer, you will take ownership of production support requests, investigate technical issues, and deliver effective solutions across backend and frontend systems. You will also contribute to new features and continuous improvements using Node.js, PHP/Laravel, and React.js. AI-powered development tools, including Claude and Claude Code, will be an integral part of your workflow, helping you accelerate debugging, coding, testing, and documentation. Working closely with technical teams, business stakeholders, and requesters, you will ensure clear communication, reliable delivery, and a positive support experience. This opportunity is ideal for an autonomous, proactive engineer who enjoys solving problems, improving applications, and sharing innovative practices with the team.