Senior Full Stack Engineer | Ruby on RailsLocation: Brazil (Remote)Supporting: US-Based Fintech CompanyPackage: Competitive Salary + Growth OpportunityAbout the CompanyA rapidly growing US fintech SaaS company is looking for a Senior Full Stack Engineer based in Brazil to help scale a market-leading platform used within the alternative investments sector.The business has experienced significant year-on-year growth and continues to expand its engineering team following multiple industry awards and increasing demand for its platform.Their technology streamlines and digitises complex onboarding, transaction, and reporting workflows for investment firms and service providers. The platform connects stakeholders through a modern, collaborative ecosystem designed to reduce operational friction and improve efficiency.What You'll Be DoingLeading technical delivery across major product initiativesDesigning and building scalable backend APIs using Ruby on RailsDeveloping modern frontend applications with React.jsCollaborating closely with Product and Engineering teams to solve real user problemsWriting clean, maintainable, and well-tested code across the full stackContributing to ongoing product and platform improvementsWhat They're Looking For3+ years of software engineering experienceStrong commercial experience with Ruby on Rails and React.jsComfortable working across the full stack in a product-focused environmentAbility to work cross-functionally and contribute to technical discussionsPassion for building high-quality software and delivering value to usersStrong communication skills and a collaborative mindsetTech StackRuby on RailsReact.jsRSpecAWS (S3, RDS, ECS)Argo CI/CDWhy Join?This is an opportunity to join a high-growth engineering team where you'll have genuine ownership, influence over product direction, and the chance to make a meaningful impact in a fast-moving environment.