Full Stack Engineer Location: Remote (Brazil) Employment Type: PJ We’re looking for Full Stack Engineer to join our Seller team — a group of passionate, collaborative developers building seamless on-platform experiences that help us acquire and activate high-value customers. You’ll work closely with Product, Marketing, and Engineering teams to deliver elegant, scalable solutions that drive engagement and business growth. What You’ll Do Produce high-quality, performant, and testable code that drives company-wide initiatives. Lead the product development process — from ideation and prototyping to implementation and release. Architect and build scalable systems supporting millions of users. Contribute to design and architectural decisions shaping the future of our software systems. Rapidly prototype and run A/B tests to validate and optimize user experiences. Mentor teammates, conduct code reviews, and pair-program to support shared learning. Collaborate closely with Product and Engineering Management to align technical solutions with business goals. Tech Stacks Languages Elixir Erlang Ruby JavaScript TypeScript Frameworks & Libraries React Next.js GraphQL Technologies & Architecture Kafka AWS / Lambda Microservices RESTful APIs Event-based architecture Databases PostgreSQL DynamoDB Tools & Practices Git / Version control IDEs Continuous integration & deployment tools Testing frameworks and best practices CMS (Prismic) A/B Testing What You Bring Minimum Requirements 7+ years of web application development experience with a proven track record of shipping successful products. Strong background in writing reliable, maintainable code and building reusable component libraries. Proficiency in at least one of the core languages or frameworks listed above. Passion for testing, code quality, and continuous improvement. Familiarity with RESTful APIs, Git, TypeScript, and remote deployment tools. Experience with event-based architectures, GraphQL, and database fundamentals. Excellent communication and cross-functional collaboration skills. Curiosity about retail/e-commerce and enthusiasm for sustainability and circular economies. Preferred Requirements Experience with React, HTML/CSS, and JavaScript. Background in GraphQL and microservices architecture. Experience developing eCommerce platforms or working with CMS tools (especially Prismic). Familiarity with mobile development (iOS and/or Android) is a plus.