A Ruby Developer specializes in using Ruby programming to build and maintain web applications, significantly enhancing an organization's digital offerings. Key responsibilities include writing clean, maintainable code, debugging, and collaborating with cross-functional teams like designers, project managers, and QA testers. Required skills include proficiency in Ruby on Rails, databases, and version control. Typical environments are agile, fostering innovation. Career progression can lead to senior developer roles, tech lead positions, or even managerial opportunities, offering avenues for specialization and leadership.