Software Development Engineer - .Net or RoR

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Software Development Engineer - .NET or RoR based in Brazil. This is a senior engineering opportunity focused on building reliable, scalable software for a global technology platform. You will contribute to a product built with Ruby on Rails and PostgreSQL while helping expand its APIs and user interfaces with C# and React. Working within a collaborative Scrum team, you will design, develop, test, and deploy high-quality features for large-scale production environments. The role combines hands-on development with technical ownership, troubleshooting, mentoring, and continuous improvement. You will work closely with Engineering, Product, and business stakeholders to solve complex problems involving security, performance, scalability, and reliability. AI is an important part of the engineering environment, with opportunities to use it to accelerate development, diagnostics, automation, and knowledge sharing. This remote role is ideal for an experienced engineer who combines strong technical judgment with curiosity, adaptability, and a results-oriented mindset.