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Application Development AS400 Developer

Crescens Inc.

  • Oklahoma City, OK
  • 2 days ago

    Highlights

    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. Hosting Coordination : Prior experience working in a hosted/managed AS400 environment, collaborating with external hosting providers to resolve infrastructure or environmental issues.

    Numbers & Facts

    LocationOklahoma City, OK
    IndustryComputer/IT Services
    Company Size20 to 49 employees
    Year Founded2002
    Websitehttp://crescensinc.com/

    Description

    Job Title: Application Development AS400 Developer
    Location: Oklahoma City, OK
    Duration: 12+months
    Type: Contract

    1 round Teams Video call - 30 mins (Technical/Cultural FIT to OID), if needed, maybe a second round for the shortlisted candidates
    Hybrid Remote M-F 20 hrs a week

    Job Description:
    • The Office of Management and Enterprise Services (OMES), in coordination with the client 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:
    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.

    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.

    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.

    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)

    About Company

    Crescens Inc. is an industry leader in providing IT staffing services and tailored workforce solutions to meet the demanding expectations and distinctive needs of clients across the United States and Canada.  We have grown tremendously in the past years and have been applauded by our clients for the quality of workforce and the quick turnaround time. We have evolved from good service to great service and all management plans are geared towards quality. 

    Our vision is to be the best in Talent Acquisition and strive for excellence consistently by focusing on four performance dimensions; Quality, Efficiency, Cost and Risk.  A satisfied client and candidate are the backbone to our continued success. Headquartered in New Jersey, we are a team with unique expertise to deliver exceptional results to our clients by setting benchmarks and establishing best practices. 

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