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This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Technical Leader (Fullstack), Industry Experience based in Brazil. This is a senior technical leadership opportunity for an engineer who combines deep full-stack expertise with strong backend architecture capabilities. You will shape the technical direction of high-impact fintech products while remaining closely involved in engineering execution. The role combines architecture, hands-on development, team mentorship, cloud infrastructure, and AI-driven engineering practices. You will help integrate machine learning capabilities into products serving demanding trading environments. Working across technical and business stakeholders, you will translate strategic priorities into scalable and reliable solutions. This is an ideal environment for an AI-forward technology leader who thrives on ownership, speed, and continuous improvement.