AS400 Developer / Administrator – Contract
About The Position
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.
Requirements
- 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
Nice To Haves
- 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
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
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What This Job Offers
Job Type
Part-time
Career Level
Mid Level
Education Level
No Education Listed
