AS400 Developer/Admin

NRI, Inc.; Oklahoma City (OK); Hybrid; USD 55,000 - 83,000; Part time

Job summary

NRI, Inc. seeks an experienced AS400 Developer/Admin to support a core IBM AS/400 (IBM i/iSeries) environment on a long-term contract. You will handle legacy application development, database management, and system administration, with modernizing initiatives as needed.

The role emphasizes hands-on work with RPGLE/RPG IV, CL/CLLE, SQL, DB2 for i, and FTP/SFTP, plus IBM i admin tasks. Hybrid schedule is approx. 20 hours per week.

Qualifications

• Experience in IBM AS/400 or IBM i environments and legacy apps.
• Hands-on with RPGLE/RPG IV, CL/CLLE, SQL, and DB2 for i.
• Knowledge of FTP/SFTP and IBM i system administration.

Responsibilities

• Maintain, troubleshoot, and optimize legacy applications in RPG, RPG III, RPG IV/ILE RPG, RPGLE, and CL.
• Investigate issues, batch problems, and user-reported system issues.
• Modify logic for regulatory/licensing changes and business processes.
• Coordinate with hosting providers for OS patching and environment changes.
• Manage security, user profiles, and object-level authority.
• Review QAUDJRN and maintain system integrity.
• Manage job queues, subsystems, and scheduling.
• Coordinate backups, DR testing, and restoration verification.
• Query and optimize DB2 for i databases; tune SQL and indexes.
• Support secure FTP/SFTP file transfers and data exports.
• Maintain interfaces between AS400 and partner systems.
• Work with DBAs and cloud architects to extract/archive legacy data.
• Document application flows, DB structures, and dependencies.
• Assist in transitioning legacy processes to cloud-based environments.

Skills

AS400

RPGLE/RPG IV

CL/CLLE

SQL

DB2 for i

FTP/SFTP

IBM i Admin

Job description

We are seeking an experienced AS400 Developer/Admin for a long-term contract opportunity supporting a core IBM AS/400 (IBM i/iSeries) environment. This position will be responsible for legacy application development and maintenance, database management, application administration, troubleshooting, system integrations, and modernization initiatives. The ideal candidate will have strong hands-on experience with RPGLE/RPG IV, CL/CLLE, SQL, DB2 for i, and FTP/SFTP, along with experience in IBM i system administration and work management.

Responsibilities

• Maintain, modify, troubleshoot, and optimize legacy applications developed in RPG, RPG III, RPG IV/ILE RPG, RPGLE, and CL.
• Investigate application issues, operational bugs, batch-processing problems, and user-reported system issues.
• Modify existing application logic to support regulatory requirements, licensing changes, and business-process updates.
• Coordinate with external hosting providers regarding system maintenance, OS patching, database utilities, and environmental changes.
• Manage application-level security, including user profiles and object-level authority.
• Review system audit information, including QAUDJRN, to help maintain system integrity.
• Manage job queues, active subsystems, and application-level job scheduling.
• Coordinate with storage and backup teams regarding application backup windows, disaster recovery testing, and restoration verification.
• Query, manage, and optimize DB2 for i databases.
• Tune SQL queries and indexes to improve database performance.
• Support automated and secure FTP/SFTP file transfers.
• Maintain interfaces between the AS400 environment and state, regional, or partner systems.
• Work with database administrators and cloud architects to extract, clean, and archive legacy data.
• Document application flows, database structures, system dependencies, and integrations.
• Assist with transitioning legacy business processes and applications to modern, cloud-based environments.

Schedule: Hybrid, approximately 20 hours per week