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Asterism IT Solutions
AS400 Developer / Administrator – ContractAsterism IT Solutions • Oklahoma City, OK, OK, US
AS400 Developer / Administrator – Contract

AS400 Developer / Administrator – Contract

Asterism IT Solutions • Oklahoma City, OK, OK, US
16 hours ago
Job type
  • Full-time
  • Quick Apply
Job description

AS400 Developer / Administrator – Contract Location:

  • Oklahoma City, OK – Hybrid Position Type: Contract Duration: 12 Months Hours: 20 Hours/Week Extension: High probability of extension Job Overview We are seeking an experienced AS400 Developer / Administrator to support a critical IBM AS/400 (IBM i / iSeries) environment.
  • The ideal candidate will have strong hands-on experience in legacy application development and maintenance, IBM i application administration, DB2 for i, production support, troubleshooting, integrations, and modernization/migration support .
  • The underlying AS400 hardware and operating system infrastructure is externally hosted and managed.
  • This role focuses primarily on application-level development, administration, database support, integrations, and coordination with the external hosting provider .

Key Responsibilities Maintain, modify, enhance, and troubleshoot legacy applications developed using RPG, RPG III, RPG IV, ILE RPG/RPGLE, CL, and SQL Provide production-level application maintenance and support Troubleshoot application defects, batch processing issues, and operational problems Modify application logic to support business and regulatory changes Manage IBM i application-level administration and work management Manage job queues, subsystems, and application job scheduling Manage IBM i user profiles, application security, and object-level authorities Review system audit information including QAUDJRN Coordinate with external hosting/service providers on environmental and infrastructure-related issues Support application backup, disaster recovery, and restoration activities Query, manage, and optimize DB2 for i databases Develop and optimize SQL queries and database indexes Troubleshoot database performance and application data-access issues Support FTP/SFTP and automated file-transfer processes Maintain integrations between IBM i and external/downstream systems Extract, cleanse, archive, and prepare legacy data for migration Document application flows, database schemas, dependencies, business logic, and system relationships Collaborate with DBAs and cloud/modernization teams on legacy-to-cloud migration initiatives Required Skills & Qualifications 5+ years of hands-on AS400 / IBM i / iSeries experience 5+ years of IBM i application development and production support Strong proficiency in:

  • RPG RPG III RPG IV ILE RPG / RPGLE CL / CLLE SQL DB2 for i Strong experience maintaining and troubleshooting legacy IBM i applications Experience working in a hosted or managed IBM i environment Experience coordinating with external hosting/service providers Experience with IBM i: Work management Job queues Subsystems Job scheduling User profile management Application security Object-level authorities QAUDJRN / audit logs Strong DB2 for i and SQL experience, including performance and index optimization Experience with FTP/SFTP and automated file transfers Experience supporting external system integrations Strong production troubleshooting and application support experience Preferred Qualifications Legacy-to-cloud migration experience Data warehousing/data extraction experience Legacy data cleansing and archiving Experience with Rational Developer for i (RDi) Public-sector/government IT experience Insurance or regulatory systems experience Experience documenting legacy business logic and application dependencies Work Environment Oklahoma City, OK Hybrid work arrangement Candidates should be local to Oklahoma City or willing to relocate for required onsite work Ability to work effectively with IT leadership, technical teams, and external service providers Powered by JazzHR
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AS400 Developer / Administrator – Contract • Oklahoma City, OK, OK, US

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