Full Stack Engineer - Opportunity in Brazil (100% remote) Location: Fully Remote Contract: PJ (open-ended)About the RoleOne of our US-based clients is looking for a kind, curious, and collaborative Senior Software Engineer (Full Stack) who enjoys solving complex and meaningful problems. This team is responsible for building seamless and compelling experiences that make it easy for individuals to consign luxury items. We place a strong emphasis on personal growth, technical excellence, and a highly collaborative engineering culture. As a Senior Software Engineer, you will be a hands-on contributor while also influencing technical direction. You will lead impactful initiatives, participate in architectural decisions, and provide mentorship through thoughtful code reviews and pair programming. If you are excited about luxury retail, e-commerce, or sustainability—and passionate about contributing to a circular economy for high-end goods—this role is for you.What You’ll DoBuild high-quality, performant, and testable code that supports company-wide initiativesDevelop with modern technologies including Elixir, Ruby, React, TypeScript, GraphQL, Kafka, AWS (Lambda), PostgreSQL, and DynamoDBContribute to architectural and technical decisions shaping the future of our systemsReview pull requests and provide constructive, actionable feedbackCollaborate through pair programming and team-based feature developmentDeploy user-facing features to productionContinuously learn and introduce new patterns, tools, and improvementsRequired Skills & Experience5+ years of professional software development experienceFluency in Elixir or RubyStrong proficiency in modern JavaScript (ECMAScript), HTML, and CSSExperience with React and the broader React ecosystem (Node.js, npm)Experience working with RESTful APIsProficiency with Git and version control workflowsFamiliarity with TypeScriptUnderstanding of event-based architecturesStrong database fundamentalsExperience working with GraphQLEnthusiasm for solving user-centric problems with technologyDesired SkillsExperience with Kafka for event streamingExperience extracting or building microservices from a monolithic architectureInterest in luxury retail, e-commerce, or high-end consignment marketsPassion for sustainability and circular economy initiativesEducationBachelor’s degree in Computer Science, Engineering, or related field preferredEquivalent professional experience considered