Senior Full Stack Engineer - Ruby / React

### About Ubiminds Ubiminds is a GPTW-certified, people-first company that partners with American software product companies to scale their development footprint. We custom-curate Brazil’s top 5% talent to support LATAM strategies through a unique combination of staff augmentation and employer-of-record services. ### Challenge We are assisting a U.S.-based company in expanding its engineering team with a Senior Full Stack Engineer who enjoys working across backend and frontend, delivering scalable, secure, and high-quality software solutions. ### What You’ll Do - Design, build, and maintain full stack applications using Ruby, Ruby on Rails, and React.js. - Architect backend services with clean separation of concerns and scalable design. - Develop and enhance user-facing features using React. - Work across the entire SDLC in Agile, Scrum, and DevOps environments. - Design and consume RESTful APIs and GraphQL services. - Implement and maintain CI/CD pipelines using tools like Docker, CircleCI, and GitHub Actions. - Write and maintain unit and integration tests. - Apply security best practices, including authentication and authorization. - Deploy, monitor, and maintain applications in cloud environments (AWS, Azure, or GCP). - Collaborate with cross-functional teams on planning, design, and delivery. ### Required Skills & Qualifications - 4+ years of experience in software engineering. - Strong proficiency in Ruby, Ruby on Rails, and React.js. - Solid understanding of full stack development and modern SDLC practices. - Experience with system design and architecture, focusing on maintainability. - Knowledge of SQL databases (PostgreSQL, MySQL). - Experience with cloud platforms (AWS, Azure, or Google Cloud). - Familiarity with REST APIs, GraphQL, and MVC architecture. - Experience with DevOps and CI/CD tools (Docker, CircleCI, GitHub Actions). - Strong testing and debugging skills. - Awareness of security best practices. - Proficiency with Git and workflows such as GitFlow. - Strong communication skills in English (written and verbal – C1 level). ### Preferred Qualifications (Bonus Points) - Experience in consumer credit, lending, loans, or insurance domains. ### Perks @Ubiminds - Work with U.S.-based product teams. - Remote-first culture + MacBook provided. - English lessons, referral bonuses, tech talks, and learning initiatives. - Full back-office support: HR, career development, and admin services. **Apply now and grow your international career as a Senior Full Stack Engineer, building end-to-end solutions with modern technologies.**