An RPG Programmer designs, develops, and maintains applications using RPG programming language on IBM i systems. This role is vital for optimizing business solutions and ensuring system efficiency. Key responsibilities include coding, debugging, and collaborating with analysts and stakeholders. Required skills include proficiency in RPG, SQL, and knowledge of database systems. Typically found in IT departments, RPG Programmers work closely with software engineers and project managers. Career progression may lead to senior developer or system architect roles, offering opportunities for further specialization and leadership.