IBM Mainframe CICS Support Engineer

Required Technical Skill Set

IBM Z, z/OS, CICS Transaction Server for z/OS, z/OS Connect EE, CICS Application File Control (CAFC), CICS JVM, CICS Performance Analyzer, CICS Configuration Manager, DB2, MQ, RACF, Omegamon, RMF, SMF, Splunk, AppDynamics, DevOps, CI/CD, automation, Ansible, Jenkins, GitHub, REXX, production support, performance management, disaster recovery and operational risk compliance

Desired Experience Range

10+ years of IBM Mainframe / CICS support experience. Candidates with fewer years of experience but strong hands-on CICS expertise will also be considered.

Desired Competencies (Technical/Behavioral Competency)

Must-Have

• University degree in Computer Science, Information Technology or a related discipline.
• Strong proficiency in IBM Z mainframe system and middleware technologies, including CICS, z/OS, DB2 and MQ.
• Hands-on experience with product installation, customization and maintenance of CICS Transaction Server for z/OS and related CICS tools.
• Knowledge of RACF security tools and performance monitoring using Omegamon, CICS Performance Analyzer, RMF and SMF.
• Excellent problem determination skills, with the ability to detect, investigate and control processing anomalies or system errors.
• English is required. Cantonese is preferred for local team communication. Mandarin is beneficial but not mandatory.
• Sound analytical, communication and interpersonal skills; proactive, self-motivated and able to work collaboratively in an agile, multicultural environment.
• No regular shift requirement; participation in a rotational maintenance support arrangement is required.
• Maintenance windows are typically Sunday 00:00–06:00, approximately once every 2 weeks on rotation, generally supported remotely with time-off in lieu after overnight support.

Good-to-Have

• Experience with z/OS Connect EE, CICS Application File Control (CAFC), CICS JVM, CICS Performance Analyzer and CICS Configuration Manager.
• Banking or financial services industry experience, preferably in enterprise production and mission-critical systems environments.
• Knowledge of DevOps principles and CI/CD implementation, including z/OSMF, Ansible automation framework, Jenkins and GitHub.
• REXX programming skills and experience automating system changes, housekeeping, monitoring, alerting and capacity planning activities.
• Open to both senior and mid-level professionals with strong hands-on platform support experience.
• Existing Hong Kong-based candidates are preferred.

Role descriptions / Expectations from the Role

• Handle product installation, customization and maintenance of IBM Z products and tools, including CICS Transaction Server for z/OS, z/OS Connect EE, CAFC, CICS JVM, CICS Performance Analyzer and CICS Configuration Manager.
• Manage system performance, reliability and availability against service level agreements using tools such as Omegamon, CICS Performance Analyzer, MOI, Splunk and AppDynamics.
• Determine and resolve issues across managed systems, including incident investigation, problem resolution and root-cause analysis.
• Work closely with global application teams to deliver projects, consultancy services and platform standardisation initiatives.
• Provide operations support, including on-call and after-hours support during approved maintenance windows.
• Automate operational processes, including CI/CD pipelines, system changes, housekeeping, monitoring, alerting, capacity management and capacity planning.
• Ensure compliance with security standards and operational risk requirements.
• Develop, manage and maintain comprehensive disaster recovery plans for all managed systems.
• Create and maintain installation, configuration and administration documentation.