AS400 Developer

HighCloud Solutions; Oklahoma City (OK); Hybrid; USD 90,000 - 130,000; Full time

Job summary

Office of Management and Enterprise Services (OMES) in Oklahoma City is seeking an experienced AS400 Developer/Admin for a long-term contract. The role focuses on legacy RPG/CL code maintenance, DB2 for i management, and coordinating with Ensono hosting for infrastructure tasks.

Requirements include at least five years in AS400 development, strong RPG IV/RPGLE/CL and SQL on DB2 for i, and experience with hosted environments and security management.

Qualifications

• Five+ years hands-on AS400 development and support.
• Proficiency in RPG IV, RPGLE, CL, and SQL on DB2 for i.
• Experience in hosted/managed AS400 environments with external hosting providers.
• Experience with IBM i work management, subsystems, and security.

Responsibilities

• Maintain and optimize legacy RPG/CL code on the AS/400 platform.
• Act as the application administration liaison for hosting and OS/db utilities.
• Query, tune, and manage DB2 for i databases and data integration tasks.
• Assist modernization and migration efforts to cloud-based systems.

Skills

RPG IV

RPGLE

CL

SQL on DB2 for i

FTP/SFTP

Tools

Ensono hosting

IBM i

Job description

Title: AS400 Developer

Location: Oklahoma City, OK (Remote (20 hrs a week))

Duration: 12 Months

Description

The Office of Management and Enterprise Services (OMES), in coordination with the Oklahoma Insurance Department (OID), is seeking an experienced, high-caliber AS400 Developer/Admin for a long-term contract engagement. This critical resource will provide essential application maintenance, database management, and application-level administration services for OID’s core IBM AS/400 (IBM i Series) environment.

Key Responsibilities

1. Legacy Application Maintenance & Support

• 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.

2. Application Administration & Infrastructure Liaison

• 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.

3. DB2 Database & Integration Management

• 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.

4. Modernization & Migration Enablement

• 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.

Requirements

• 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 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)