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 Python Engineer based in Brazil. We are seeking a Senior / Principal Python Engineer to design and develop scalable backend solutions powering modern financial technology platforms. This role offers the opportunity to work on high-performance systems, distributed architectures, and payment infrastructure used by businesses globally. You will contribute to critical engineering decisions, shape technical strategies, and help build reliable cloud-native applications. Working closely with Product, Frontend, AI, and Engineering teams, you will solve complex technical challenges while driving innovation and engineering excellence. The ideal candidate is passionate about backend development, enjoys architectural problem-solving, and thrives in a collaborative international environment. This is an opportunity to make a significant impact while working with modern technologies and AI-driven solutions.