Senior Ruby on Rails Developer (AI-Augmented Engineering) at Proxify AB

Headquarters: Sweden URL: http://career.proxify.io The Role: We are seeking a Senior Ruby on Rails Developer who treats software engineering as an art form and a discipline. In this role, you will lead the development and scaling of highly responsive, business-critical web applications. You won't just build features; you will optimize system architectures, manage complex domain models, and champion engineering practices that keep codebases sustainable over long lifecycles. We look for developers who understand the core principles of software craftsmanship and can leverage modern technologies—like AI development workflows—to compress delivery timelines without compromising code quality. If you are an active contributor to the broader tech community and are obsessed with writing clean, expressive Ruby, you will thrive here. What we are looking for: 5+ years of production experience writing object-oriented Ruby and scaling robust Rails applications. Strong command over architectural patte