Application Developer

Full Time

Oklahoma City, OK , Oklahoma City, OK, US

Position Summary

LCI 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. Because the underlying AS/400 hardware partition, operating system, and baseline infrastructure are fully hosted and managed by an external provider, this position does not require hardware or OS-level systems engineering. Instead focus will be on application development, software support, database management, and serving as the technical liaison to Ensono for environment-level modifications. Additionally, the contractor will play a key role in assisting state IT leadership with database extraction, documentation of legacy business logic, and support for ongoing cloud migration and data archiving initiatives.

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Duties & 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.

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

• Maintain a working familiarity with legacy system architectures, dependencies, and integration points to safely support operational systems while building modern alternatives. Collaborate on code submission pipelines by submitting pull requests for technical staff review.

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

Education & Experience Requirements

• Experience: Minimum of two (2) 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.

• ​ 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.

Skill & Certification Requirements

• ​ This role is structured as a contract engagement. Candidates must be local to Oklahoma City

• Ability to deliver exceptional, production-grade work output with minimal defects under established project timelines.

• Ability to balance multiple simultaneous development tasks, managing time effectively between legacy system support and modern application development.

• Ability to collaborate seamlessly within a multi-disciplinary team environment consisting of technical staff, analysts, QA testers, and project managers.

• Strong communication skills, with a proven ability to translate complex technical architecture or functional constraints into clear concepts for both technical and non-technical audiences.

• Highly proficient in business software applications (i.e.: Microsoft Office – Outlook, Word, Excel, Project, SharePoint, and PowerPoint)

• Strong ability to lead, guide, and mentor personnel and multi—task

• Position requires sitting, for long periods of time. (Sedentary Work)

• Most duties require extended use of a keyboard and computer monitor

• Extended Telephone Use

• May require lifting of 20-50 lbs

• LCI is an Equal Opportunity Employer Veteran/Disabled