**Role: Full Stack Tech Lead** **Location: Sao Paulo, Brazil \- Onsite** **Type: Contract** **Job Description:** We are seeking a highly skilled Full Stack Tech Lead with deep expertise across frontend and backend development to lead the design, development, and optimization of scalable, high\-performance web applications. The ideal candidate combines technical excellence in React, NodeJS, and AWS with strong leadership skills to guide engineering teams, ensure architectural soundness, and deliver business\-critical solutions. **Required Skills \& Qualifications** * 8–10 years of professional experience as a Full Stack Engineer. * Expert proficiency in JavaScript (ES6\+), NodeJS, ReactJS, and Express. * Strong knowledge of SQL and relational databases (preferably PostgreSQL). * Experience with RESTful APIs, microservices architecture, and backend integrations. * Proficiency with AWS cloud services and DevOps workflows. * Hands\-on expertise with Git/GitHub workflows. * Experience writing and maintaining unit and functional tests. * Strong understanding of HTML5, CSS3, and modern frontend build tools (Webpack, Babel, NPM/Yarn). * Demonstrated experience leading engineering teams or projects Job Type: Contract Contract length: 24 months Pay: R$15,000\.00 \- R$20,000\.00 per month