Senior Mainframe Systems Engineer

3 days ago


Hong Kong, Central and Western District, Hong Kong SAR China Hong Kong Exchanges and Clearing Limited Full time

About Us:

Hong Kong Exchanges and Clearing Limited (HKEX) is a purpose-driven company that connects, promotes, and progresses our markets and the communities they support for the prosperity of all.

Job Summary:

We are seeking an experienced Senior Mainframe Systems Engineer to join our team. The successful candidate will be responsible for managing and supporting mission-critical systems on System z, working closely with talented technologists in support and implementation roles.

Duties and Responsibilities:

  • Implement and support infrastructure solutions in critical IBM System z environments requiring stability, high throughput, and controlled CPU resources.
  • Perform mainframe administration, support services, management of z/OS, DB2, CICS, and related 3rd party utilities and peripherals.
  • Configure, install, customize, secure, manage, report performance, tune, stress test, plan capacity, patch, upgrade, back up, and recover systems.
  • Provide support and implementation work to application teams including database administration and performance analysis.
  • Advise on operating policies, technical architecture, and configuration of database systems.
  • Implement compliance standards and regularly review system compliance.
  • Proactively assess exposure areas and reduce vulnerabilities.
  • Anticipate, evaluate, and resolve complex system problems to minimize downtime and performance degradation.
  • Support ITIL/ITSM Incident management, Problem Management, Change Management, and Release Management processes.
  • Manage vendors to ensure high-quality delivery and implementation.

Requirements:

  • Bachelor's degree in Computer Science, Information Systems, or related fields.
  • Minimum 8 years' experience with z/OS, DB2, CICS.
  • Experience supporting mission-critical, high-availability, high-performance platforms on System z.
  • Proficiency in VTL infrastructure, CA1, CA7, Endevor is advantageous.
  • Strong analytical, problem-solving, and presentation skills.
  • Excellent command of written and spoken English and Chinese.

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