AS400 Systems Administrator
Questronix Corporation
| Company | Questronix Corporation |
| Category | Operations & Admin |
| Location | Makati City |
| Remote | On-site (inferred) |
| Employment | Contract |
| Level | Not stated |
| Salary | Not stated by the employer |
| Posted | 3 Jul 2026 |
| Last verified | 3 Aug 2026 |
| Source | Employer ATS (workable) |
Description
Job Description: Provide L2 support for IBM AS/400 / IBM i systems and applications Monitor system health, jobs, subsystems, message queues, and batch schedules Perform incident troubleshooting, root cause analysis, and resolution Manage user profiles, object authorities, and security access Review logs, investigate errors, and resolve job or program failures Monitor interfaces, file transfers (FTP/SFTP), MQ, and data flows Perform backup and restore activities (BRMS and native backups) Support change implementations and post-incident documentation Coordinate with L2, L3, and external vendors Participate in on-call or shift-based production support Requirements Qualifications: At least 1 to 2 years of hands-on experience with IBM AS/400 / IBM i and OS/400 Strong knowledge of job control, subsystems, job queues, and message queues Experience with spool file management, performance monitoring, and licensing L2 application support experience in production environments Basic knowledge of RPG/RPGLE and CL/CLLE (COBOL is a plus) DB2 for i fundamentals and basic SQL query skills Experience with schedulers (Control-M, Tivoli) and ticketing tools (ServiceNow, Jira) Understanding of batch vs online processing and Dev/UAT/Prod environments Knowledgeable with MIMIX Basic Linux and Windows system awareness Preferred Skills: AS/400 modernization or migration experience DevOps or automation exposure on IBM i Banking, retail, or manufacturing domain experience SaaS or large-scale enterprise production support background Benefits
