Senior RPG Developer for IBM iSeries / AS400

cloudatus helps international enterprise customers design, migrate, modernize, and support business-critical IT environments across cloud, infrastructure, workplace, security, managed services, and enterprise legacy systems.

• Strong commercial experience with IBM iSeries / AS400 environments
• Hands-on experience with RPG, RPGLE, ILE RPG
• Practical knowledge of CL and CLLE
• Good knowledge of Db2 for i and SQL
• Experience with 5250-based applications and IBM i system commands
• Ability to analyze application logic, job logs, system messages, and data issues
• Experience with file-based integrations: IFS, SFTP/FTP, CSV, XML
• Understanding enterprise application support and production troubleshooting
• Ability to read, understand, and safely modify legacy code
• English language proficiency at minimum B2 level

Nice to have:

• Experience with free-format RPG or SQLRPG
• Experience with REST APIs, JSON, XML, or middleware integrations
• Knowledge of RDi, VS Code / Code for IBM i or similar modern development tools
• Experience with ODBC/JDBC integrations
• Knowledge of DDS, Query/400, or legacy green-screen applications
• Experience in manufacturing, logistics, ERP, warehouse, or SAP-integrated environments
• German language skills

• Analyse IBM iSeries applications, databases, interfaces, and dependencies
• Develop and maintain solutions using RPG IV, RPGLE, ILE RPG, Free-Format RPG, and CLLE
• Design and optimise Db2 for i database structures and SQL queries
• Diagnose complex application, database, integration, and system issues
• Analyse job logs, batch processes, queues, and performance bottlenecks
• Plan, test, implement, and document production changes
• Build and maintain integrations using REST, SOAP, JSON, XML, ODBC, JDBC, and file transfers
• Support integrations with ERP, CRM, finance, manufacturing, logistics, and sales systems
• Participate in automation, migration, and application modernisation projects
• Cooperate with customers, external vendors, and internal technical teams
• Provide advanced third-line support for critical incidents

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