Job Summary: We are seeking a Ruby on Rails Developer to design, develop, and maintain complete web applications, APIs, and distributed services that support critical business operations. Key Highlights: 1. Develop robust web applications using Ruby on Rails 2. Work with real-time communication via WebSockets (ActionCable) 3. Promote technical growth within the team and engineering best practices We are looking for a Ruby on Rails Developer (Mid-level or Senior) to join our technology team. You will be responsible for designing, developing, and maintaining complete web applications (backend + frontend), APIs, and distributed services that support critical business operations. **What will be your mission in the Development team?** * Develop web applications using Ruby on Rails; * Build and maintain scalable APIs and services; * Implement and maintain asynchronous processing with background jobs; * Develop server-driven interfaces using Hotwire (Turbo + Stimulus); * Work with real-time communication via WebSockets (ActionCable); * Participate in platform architectural decisions; * Integrate Rails systems with the company’s .NET services; * Deploy artifacts to existing environments; * Promote technical growth within the team and engineering best practices. **Basic Requirements:** * Experience with Ruby and Ruby on Rails; * Experience with PostgreSQL; * Experience with Rails Migrations and data modeling; * Experience with REST API development; * Knowledge of asynchronous processing (e.g., Solid Queue); * Knowledge of WebSocket in the Rails ecosystem (ActionCable). **Nice-to-have Qualifications:** * Integration with .NET services (Web API / Worker Service); * Knowledge of service-oriented architecture and design patterns; * Experience with messaging and distributed processing. * Frontend: Hotwire (Turbo + Stimulus), Bootstrap, Sass, PostCSS (autoprefix), Bundling with esbuild + cssbundling, React and Redux; * DevOps Infrastructure: Docker, AWS (ECS and EC2), and concepts of continuous deployment and containers. **Additional Information:** * Fully on-site position — São Paulo unit (Faria Lima); * Contract type: PJ; * Health insurance; * Paid time off; * Variable compensation (bonus). **Join this growing team!**