This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior / Principal Software Engineer based in Brazil. We are looking for an experienced Senior / Principal Software Engineer to help shape the evolution of an AI-powered revenue intelligence platform. In this role, you will design and develop sophisticated integrations, build intelligent workflows, and deliver scalable solutions that improve sales productivity and revenue visibility. You will work across a modern technology stack, including React, TypeScript, Next.js, Node.js, PostgreSQL, and AWS, solving complex engineering challenges in a growing SaaS environment. You will also help establish robust architectural foundations while leveraging AI-assisted development to accelerate delivery without compromising quality. Working closely with a distributed team, you will contribute to product innovation and support an expanding international customer base. This fully remote opportunity is ideal for an engineer who combines technical depth, strong architectural judgment, and a passion for building reliable software at scale.