CISS System Administrator

  • Hong Kong
  • Contract
  • Wed Apr 8 02:27:10 2026
  • 41525


CISS System Administrator

What’s on Offer:

  • Industry: Consulting
  • Location: Hong Kong
  • 12 months contract role (with the possibility of extension)
  • Competitive Compensation

Job Summary:
We are seeking an experienced CICS System Administrator/Programmer to manage and support IBM CICS Transaction Server environments on z/OS mainframes. This role is responsible for ensuring the stability, performance, and security of mission-critical online transaction processing systems, while supporting integrations with enterprise platforms.
Job Description:
CICS System Administration & Support
  • Install, configure, upgrade, and maintain IBM CICS Transaction Server (CICS TS) environments
  • Manage multiple CICS regions, including startup, shutdown, and parameter configuration
  • Configure and maintain CICS system definitions (SIT, PPT, FCT, PCT, DCT, TST, etc.)
  • Support high availability and disaster recovery configurations
CICSplex Management
  • Administer and manage CICSPlex SM components (CMAS, MAS, WUI)
  • Define and maintain CICSplex topology and routing
  • Monitor workload balancing and region health across the CICSplex

    Performance Monitoring & Tuning
  • Monitor system performance using tools such as OMEGAMON, RMF, SYSVIEW
  • Analyze SMF, RMF, and CMF data to identify bottlenecks and optimize performance
  • Proactively tune CICS regions and transactions to ensure optimal throughput and response
    times
Incident Management & Troubleshooting
  • Investigate and resolve CICS system abends, dumps, and performance issues
  • Perform root cause analysis for system outages and recurring incidents
  • Provide Level 2/Level 3 support for production issues
Security & Compliance
  • Configure and maintain security using RACF / ACF2 / Top Secret
  • Ensure compliance with enterprise security policies and audit requirements
  • Manage user access, transaction security, and dataset permissions

Integration & Middleware Support
  • Support integration with MQ, DB2, IMS, and external systems
  • Assist in configuring CICS web services, APIs, and connectivity
  • Work closely with application and infrastructure teams for end-to-end system support
Change & Release Management
  • Participate in system upgrades, patching, and maintenance activities
  • Support deployment processes and ensure proper change management procedures
  • Maintain system documentation, runbooks, and operational procedures
Job Requirements:
  • Strong hands-on experience with IBM CICS TS on z/OS
  • Solid knowledge of z/OS utilities and tools (JCL, TSO/ISPF, SDSF, SMP/E)
  • Experience with CICSPlex SM administration
  • Familiarity with mainframe subsystems: MQ, DB2, IMS
  • Experience with performance monitoring tools (OMEGAMON, RMF, SYSVIEW)
  • Strong troubleshooting skills in a production environment
Preferred / Good to Have
  • Experience with CICS web services, APIs, or modernization initiatives
  • Knowledge of DevOps practices in mainframe environments
  • Exposure to automation and scripting (REXX, CLIST, etc.)
  • Experience in banking / financial services environments
Soft Skills
  • Strong analytical and problem-solving skills
  • Ability to work under pressure in a 24/7 production environment
  • Good communication skills and ability to work with cross-functional teams
Experience Level
  • Typically 5–10+ years of relevant mainframe / CICS system programming experience