Job Summary: Ruby on Rails Developer to participate in the full development lifecycle, building scalable and secure solutions while collaborating within a team. Key Highlights: 1. Work with a modern tech stack and cutting-edge AI 2. Collaborate in a dynamic and challenging environment 3. A culture focused on innovation and technology At Blu, we connect over 50,000 retailers and 5,000 manufacturers across Brazil through intelligent financial solutions—making a real impact on independent retail and manufacturing. We seek people who inspire innovation, value autonomy, and thrive in dynamic, collaborative, and challenging environments. If you want to join one of the best fintechs to work for—featuring an innovation-driven culture, cutting-edge technology, and exceptional people—this role is for you. We currently have an opening for a **Ruby on Rails Developer** on our Engineering team. Here, you’ll have the opportunity to work with a modern tech stack and the market’s best artificial intelligence tools. **Responsibilities:** * Develop and maintain backend APIs and services using Ruby on Rails. * Implement scalable and secure solutions, ensuring performance and data integrity. * Create and maintain automated tests (unit, integration, and end-to-end) to guarantee code quality. * Collaborate with the team to define coding best practices aligned with the project. * Conduct code reviews and participate in technical discussions. * Participate in the full development lifecycle—from planning through deployment. * Efficiently integrate external systems and APIs. * Stay updated on best practices and emerging technologies. **Requirements:** * Experience with Ruby on Rails for backend development. * Hands-on experience with automated testing (unit, integration, and E2E). * Knowledge of testing frameworks such as RSpec, Capybara, and Selenium. * Experience designing RESTful APIs and applying architectural best practices. * Proficiency in relational databases (PostgreSQL, MySQL). * Git in your veins. * Ability to solve complex problems with sound technical reasoning. * Experience with agile methodologies (Scrum, Kanban). * Strong communication and teamwork skills. **Nice-to-Haves:** * Experience with CI/CD. * Knowledge of cloud platforms (AWS, Heroku, Google Cloud). * Familiarity with Docker/Kubernetes. * Experience with microservices and distributed systems. * Understanding of web application performance and security. **BENEFITS:** * For Meals: VA: R$ 305.14/month and VR: R$ 36.79/day (business day) * For Remote Work: Internet Allowance: R$ 115.61/month and Remote Work Support Payment: R$ 345.78 (one-time payment in the first month) * For Your Health: Bradesco Health Plan — fully subsidized for the employee; Bradesco Dental Plan — fully subsidized for the employee. * Totalpass Plans — Partnership with a network of 5,000+ gyms nationwide (including SmartFit and Bioritmo chains); Daily workout program from home; Plans offering therapy options. * Education: Partnerships with universities for undergraduate and postgraduate studies; Partnership with a 100% online English course (extendable to dependents); Konquest learning platform. * For Your Family: Daycare allowance (for children up to 5 years old). * To Enjoy Your Day: Birthday day off (valid only for the birthday date). * Others: Life insurance and funeral assistance plans; Partnerships with Movida (car rentals) and Itaú. **#JoinBlu**