This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Tech Lead Full Stack based in Brazil. This is an opportunity to provide technical leadership within a product-focused technology environment that combines software engineering with human behavior insights.You will lead a development team while remaining hands-on in designing and building scalable full-stack applications.The role spans architecture, technical decision-making, mentoring, code quality, delivery, and collaboration with Product.You will work primarily with TypeScript, Node.js, React, distributed architectures, and AWS-based infrastructure.The position also offers exposure to AI technologies, Python, and vector databases, with opportunities to introduce meaningful innovation into products.You will have significant autonomy to shape engineering practices, improve technical standards, and guide the evolution of the platform.This role is ideal for a senior engineer who combines strong technical depth with leadership, communication, and a pragmatic product mindset.