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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # AS400 / IBM i Application Developer - **Company:** First Soft Solutions - **Location:** Oklahoma City, OK, United States - **Experience:** Expert - **Contract:** Temporary to permanent - **Skills:** Db2400, Data Analysis, Applications Architecture, Business Logic, Application Services, IBM System I, Batch Processing, Static Program Analysis, Databases, Data Migration, Data Mining, Database Connection, Database Development, Database Schema, Database Storage Structures, Software Debugging, Disaster Recovery, File Transfer, IBM RPG (Programming Language), Information Technology Audit, Job Scheduling, Performance Tuning, Standard Sql, Software Engineering, SQL Databases, Subsystems, RPL (Programming Language), Systems Integration, File Transfer Protocol (FTP), Cloud Platform System, Software Security, Software Troubleshooting, Software Application Programming, Database Performance, Control Language, Database Tools and Utilities - **Published:** September 17, 2026 - **Apply:** https://www.careerjet.com/jobad/usa03dccb14bad7d046db24664860e3201 ## About the Role * Minimum 5 years of hands-on experience supporting and developing applications within an IBM AS400 / IBM i / iSeries environment. * Strong hands-on development experience with: * RPGLE * RPG IV / ILE RPG * Control Language (CL) * SQL * DB2 for i * Strong experience maintaining and supporting legacy AS400 applications. * Experience debugging RPG programs and troubleshooting production application issues. * Hands-on experience with DB2 for i database development, queries, and performance optimization. * Experience with IBM i work management, including: * Subsystems * Job queues * Job scheduling * User profiles * Object authorities * Application security * Experience supporting file transfers and system integrations using FTP and SFTP. * Experience working within a hosted or managed AS400 environment. * Ability to coordinate effectively with external hosting providers and infrastructure teams when resolving environmental or system-related issues. * Experience supporting backup, recovery, and disaster recovery activities. * Strong troubleshooting, analytical, and problem-solving capabilities. * Ability to document existing legacy applications, database structures, interfaces, and system dependencies. * Strong verbal and written communication skills. * Highly Relevant Skills * IBM AS400 / IBM i / iSeries * RPGLE * RPG IV / ILE RPG * RPG III * Control Language (CL) * DB2 for i * SQL, Job Overview: Requirement/Must Have: Minimum of 5+ years of hands-on experience in AS400 (IBM i, iSeries) application development and support. Exceptional proficiency in RPG IV… ## Description The Office of Management and Enterprise Services (OMES), in coordination with the Oklahoma Insurance Department (OID), is seeking an experienced AS400 / IBM i Developer and Application Administrator for a long-term contract engagement. This role will support OID's core IBM AS/400 / IBM iSeries environment, with responsibility for legacy application development and maintenance, DB2 database support, application-level system administration, integrations, production troubleshooting, and modernization activities. The ideal candidate will have strong hands-on experience with RPGLE, RPG IV/ILE RPG, Control Language (CL), DB2 for i, SQL, FTP/SFTP, and IBM i application administration. This individual will also serve as a key technical liaison between the agency, hosting providers, infrastructure teams, database administrators, and cloud modernization teams., AS400 / IBM i Application Development & Maintenance * Maintain, enhance, troubleshoot, and optimize legacy applications running within the IBM AS400 / IBM i environment. * Develop and maintain applications using: * RPG * RPG III * RPG IV / ILE RPG * RPGLE * Control Language (CL) * SQL * Analyze and resolve production defects, operational issues, batch-processing failures, and user-reported application problems. * Modify existing application logic to accommodate: * Regulatory changes * Licensing requirements * Agency policy changes * Business process enhancements * Perform code analysis, debugging, testing, and production support for existing AS400 applications. * IBM i Application Administration * Provide application-level administration and operational support within the IBM i environment. * Manage and support: * IBM i user profiles * Application security * Object-level authorities * Job queues * Active subsystems * Application job schedulers * Review and verify IBM i system audit logs, including QAUDJRN, to help maintain system and application integrity. * Troubleshoot application-related IBM i operational issues and coordinate resolution with infrastructure teams when necessary. Hosting Provider & Infrastructure Coordination * Serve as a primary technical liaison between OID and its external AS400 hosting/managed-services providers. * Coordinate activities related to: * IBM i operating system maintenance * OS patching * Database utilities * Environmental changes * Storage operations * Backup activities * Disaster recovery * System restoration * Work closely with Ensono and other infrastructure/hosting teams to coordinate application backup windows and operational activities. * Participate in disaster recovery testing and verify successful application and data restoration. * DB2 for i Database Management * Query, manage, troubleshoot, and optimize DB2 for i databases. * Develop and execute SQL queries for application support, data analysis, troubleshooting, and integration. * Analyze and optimize: * SQL queries * Database indexes * Database access patterns * Application/database performance * Assist with legacy table maintenance, data extraction, cleanup, migration, and archival activities. * File Transfer & Systems Integration * Develop and support secure file-transfer integrations using: * SFTP * FTP * Support interfaces between the hosted AS400 environment and downstream: * State systems * Regional systems * Partner systems * Third-party applications * Troubleshoot file-transfer failures and integration-related production issues. * Support automation of recurring data exchanges and file-transfer processes. * Modernization & Migration Support * Collaborate with state database administrators, application teams, and cloud architects on modernization initiatives. * Assist with extracting, cleaning, transforming, and archiving legacy AS400 data. * Analyze existing legacy applications and business logic to support migration to modern platforms and cloud environments. * Document: * Application architecture * System workflows * Database schemas * Interfaces * Application dependencies * Business rules * Batch processes * Integration points * Help identify legacy system dependencies that must be addressed during application modernization and migration., * IBM i Work Management * Subsystems * Job Queues * User Profile Management * Object-Level Security * QAUDJRN * SFTP * FTP * Batch Processing * Application Support * Production Support * Legacy Application Modernization * Data Migration * Disaster Recovery * Managed / Hosted AS400 Environments Interview Process Round 1: Approximately 30-minute Microsoft Teams video interview focused on technical qualifications and cultural fit with OID. A second interview may be conducted for shortlisted candidates if required. Work Schedule This is a part-time hybrid engagement requiring approximately 20 hours per week in support of the Oklahoma City-based environment. ## Related Videos - [Kubernetes and Microservices with Multi-Model Databases](https://www.wearedevelopers.com/videos/382-kubernetes-and-microservices-with-multi-model-databases) - [10M Data Records Lost, Underwater Computing, and Psychedelic Fish - Matthias Geniar](https://www.wearedevelopers.com/videos/1908-10m-data-records-lost-underwater-computing-and-psychedelic-fish-matthias-geniar) - [Building with IBM Bob](https://www.wearedevelopers.com/videos/100275-building-with-ibm-bob) - [Develop on Windows, Deploy on Red Hat Enterprise Linux](https://www.wearedevelopers.com/videos/1600-develop-on-windows-deploy-on-red-hat-enterprise-linux) - [".Net is too slow" was not an option](https://www.wearedevelopers.com/videos/100176-net-is-too-slow-was-not-an-option) - [Fault Tolerance and Consistency at Scale: Harnessing the Power of Distributed SQL Databases](https://www.wearedevelopers.com/videos/1146-fault-tolerance-and-consistency-at-scale-harnessing-the-power-of-distributed-sql-databases) ## Related Articles - [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for) - [7 Important Tips That Every Software Developer Should Know](https://www.wearedevelopers.com/magazine/101-7-important-tips-that-every-software-developer-should-know) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Should senior developers refuse interview coding challenges?](https://www.wearedevelopers.com/magazine/29-should-senior-developers-refuse-interview-coding-challenges) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Résumé-Driven Development: How IT trends affect the job market for software developers](https://www.wearedevelopers.com/magazine/59-resume-driven-development-how-it-trends-affect-the-job-market-for-software-developers)