Description
We are seeking an experienced mainframe professional to support the stability, resilience, and performance of HKEX's mission-critical IBM Z platform.
Working with infrastructure, application, and vendor teams, the role covers platform administration, technical implementation, operational support, security and control, performance management, and continuous service improvement.
Key responsibilities include:
- Supporting mission-critical IBM Z environments requiring high availability, high throughput, and effective CPU-capacity management
- Administering IBM Z infrastructure and core software, including z/OS, Db2 for z/OS, CICS Transaction Server, and IBM MQ
- Supporting BMC AMI storage-management and application-development software, including StopX37, and Broadcom mainframe software such as CA 1 Tape Management, CA 7 Workload Automation, and Endevor Software Change Manager
- Performing configuration, security setup, patching, upgrades, backup and recovery, performance tuning, stress testing, and capacity planning
- Providing database administration, implementation support, and performance analysis to application teams
- Partnering with application, infrastructure, information security, and operations teams to integrate the platform and deliver reliable production services
- Resolving complex incidents and recurring problems, and managing incidents, problems, changes, and releases through ServiceNow
- Implementing compliance requirements, reviewing controls, identifying vulnerabilities, and coordinating remediation while maintaining technical and recovery documentation
- Advising on platform architecture and database configuration, and managing vendors and delivery partners to ensure quality and timely delivery
Requirements:
- Bachelor's degree in Computer Science, Information Systems, Information Technology, or a related discipline
- At least 7 years of hands-on experience supporting IBM Z environments, with strong practical experience across core operating system, database, transaction-processing, and messaging technologies
- Proven experience supporting mission-critical, high-availability, and high-performance IBM Z platforms
- Practical experience in system administration, troubleshooting, performance management, security controls, patching, upgrades, backup, and recovery
- Experience with VTL architecture and major third-party mainframe software covering tape management, workload automation, software change management, storage management, or application development is an advantage
- Strong analytical and problem-solving skills, with a proactive, accountable, and collaborative working style
- Effective interpersonal, stakeholder-management, documentation, and presentation skills