AS400 Developer​/Admin - Part-Time

Location:

Oklahoma City, OK (Hybrid options available) Position Type:
Contract Contract Duration: 12-Month Initial Assignment (with high probability of extension) Key Responsibilities

Maintain, modify, and optimize custom legacy application code written in RPG, RPG III, RPG IV (ILE RPG), RPGLE, and Control Language (CL).

Investigate and troubleshoot operational bugs, batch run anomalies, and user-reported system issues.

Update existing logic to adapt to regulatory changes, licensing requirements, and agency business process updates.

Serve as the primary technical point of contact to coordinate with the hosting provider for system maintenance, OS patching schedules, database utilities, and environmental adjustments.

Manage application-level security configurations, including user profiles, object- level authority, and verify system audit logs (QAUDJRN) to maintain system integrity.

Manage local job queues, active subsystems, and application-level job schedulers.

Coordinate with Ensono’s storage and backup operations teams to ensure application backup windows, disaster recovery testing, and restoration

verifications are carried out successfully.

Query, manage, and tune DB2 for i databases, optimizing SQL queries and indexes to ensure database responsiveness.

Support secure, automated file transfers (SFTP/FTP) and interfaces between the hosted AS400 partition and downstream state, regional, or partner systems.

Cooperate with state database administrators and cloud architects to extract, clean, and archive legacy tables.

Document system flows, database schemas, and interdependencies to facilitate a seamless transition of legacy business logic to modern cloud systems.

Experience:

Minimum of five (5) years of hands-on experience in AS400 (IBM i, iSeries) application development and support.

Programming

Skills:

Exceptional proficiency in RPG IV (ILE RPG), RPGLE, CL, and SQL on DB2 for i.

Hosting Coordination:
Prior experience working in a hosted/managed AS400 environment, collaborating with external hosting providers (such as Ensono) to resolve infrastructure or environmental issues.

Application Administration:
Proven experience in IBM i work management, subsystem coordination, application security, and user profile management.

Data Integration:
Strong background in file transfer automation (FTP, SFTP) and managing external integrations.

Direct experience assisting in legacy-to-cloud migrations or data warehousing extractions.

Familiarity with modern IBM i tools, such as Rational Developer for i (RDi).

Prior experience working in public sector environments or supporting insurance regulatory systems.