To thrive as an RPGLE developer, you need a strong understanding of IBM i (AS/400) systems, proficiency in writing and maintaining RPG IV/ILE code, and experience with database concepts such as DB2. Familiarity with development tools like Rational Developer for i (RDi), version control systems, and knowledge of CL programming or SQL are typically expected. Strong analytical thinking, troubleshooting skills, and effective communication help RPGLE professionals excel in collaborating with cross-functional teams and solving complex business problems. These competencies are critical for ensuring high-quality, maintainable applications that support enterprise operations.