Senior RPG Developer for IBM iSeries / AS400 (part-time, 0.25 FTE)

Cloudatus is seeking a Senior RPG Developer for IBM iSeries / AS400 to support international enterprise customers in the manufacturing and distribution sector. You will play a key role in the development, maintenance, and modernization of business-critical legacy applications.

Key responsibilities

• Analyze IBM iSeries applications, databases, and system dependencies.
• Develop and maintain solutions using RPG IV, RPGLE, ILE RPG, and CLLE.
• Design and optimize Db2 for i database structures and complex SQL queries.
• Diagnose and resolve application, database, and performance bottlenecks.
• Build and maintain integrations using REST, SOAP, JSON, XML, and file transfers.

Requirements

• Strong commercial experience with IBM iSeries / AS400 environments.
• Hands-on expertise in RPG, RPGLE, ILE RPG, and CL/CLLE.
• Solid knowledge of Db2 for i, SQL, and 5250-based applications.
• Ability to analyze legacy code, job logs, and system messages effectively.
• Strong analytical skills and professional English proficiency (minimum B2).

What we offer

• Flexible working schedule and fully remote cooperation model.
• Comprehensive medical coverage and sports benefits.
• Opportunities for professional development through certifications and courses.
• Customizable language lessons in English or German.
• Modern computer equipment provided for your daily tasks.