Senior FullStack Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior FullStack Engineer based in Brazil. Join a remote-first engineering team building reliable, modern business systems and payment solutions for growing companies. As a Senior FullStack Engineer, you will develop and ship features for a prepaid card and payments platform, combining hands-on software engineering with AI-assisted development. You will use tools such as Claude Code to accelerate implementation while applying strong engineering judgment to review code, debug complex issues, and validate changes through rigorous testing. Working across backend services, frontend applications, databases, cloud infrastructure, and payment integrations, you will help ensure that financial transactions and sensitive customer data remain secure and reliable. The role emphasizes problem-solving, accountability, and delivering production-ready software rather than simply generating code. You will also benefit from dedicated learning time, paid certifications, and the flexibility of a distributed working environment.