Senior Full Stack Engineer / Tech Lead

This position is listed on behalf of a partner company, which manages all applications and next steps. Our partner is looking for a Senior Full Stack Engineer / Tech Lead based in Brazil. In this role, you will help build and evolve an end-to-end forecasting platform that brings machine learning capabilities into practical, user-facing applications. You will work across modern frontend and backend technologies, developing scalable applications and reliable cloud-based services. Using React, TypeScript, Node.js, and AWS serverless architecture, you will support automated workflows while enabling users to interact with forecasting models. The role emphasizes distributed systems, automated testing, continuous delivery, and responsible AI-assisted software development. You will collaborate closely with engineers, product stakeholders, and machine learning specialists to deliver high-quality solutions. As a Tech Lead, you will also shape architecture, guide technical decisions, mentor colleagues, and take ownership of delivery while remaining hands-on in development.