AS/400 Developer & Admin - Legacy Modernization & DB2 for i

Appathon.Ai; Oklahoma City (OK); Hybrid; USD 90,000 - 120,000; Full time

Job summary

Appathon.Ai in Oklahoma City seeks an experienced AS400 Developer/Admin to support the state’s IBM i environment. The role focuses on legacy development, DB2 for i management, and system integrations, with modernization initiatives across hosted and cloud contexts.

The candidate will work with state IT teams and a managed hosting provider, handling security, job scheduling, and environment changes for ongoing modernization projects.

Qualifications

• 5+ years hands-on AS400/IBM i/iSeries experience
• Strong development experience with RPG IV, RPGLE, ILE RPG, CL, SQL, and DB2 for i
• Experience supporting and troubleshooting legacy AS400 applications
• Knowledge of IBM i application administration, security, and work management
• Experience with FTP/SFTP, data integrations, and automated file transfers
• Experience working within a hosted or managed AS400 environment

Responsibilities

• Maintain, enhance, and troubleshoot applications developed in RPG, RPG III, RPG IV (ILE RPG), RPGLE, and CL
• Investigate production issues, batch processing failures, and application defects
• Modify legacy applications to support changing business and regulatory requirements
• Query, manage, and optimize DB2 for i databases, SQL queries, and indexes
• Support IBM i application administration, including user profiles, security, job queues, subsystems, and job scheduling
• Coordinate system-level requirements with the external AS400 hosting provider
• Support FTP/SFTP integrations and automated data transfers with external systems
• Assist with legacy database extraction, data cleanup, archiving, and cloud migration initiatives
• Document application logic, database schemas, system flows, interfaces, and dependencies
• Work closely with state DBAs, cloud architects, technical teams, and business stakeholders

Skills

AS400/IBM i

RPG IV

RPGLE

ILE RPG

CL

SQL

DB2 for i

FTP/SFTP

Security

Automation

Tools

RDi

DB2 for i

IBM i Navigator

Job description

Appathon.Ai in Oklahoma City seeks an experienced AS400 Developer/Admin to support the state’s IBM i environment. The role focuses on legacy development, DB2 for i management, and system integrations, with modernization initiatives across hosted and cloud contexts.

The candidate will work with state IT teams and a managed hosting provider, handling security, job scheduling, and environment changes for ongoing modernization projects.