Senior Mainframe System Administrator (z/OS, CICS & MQ)

Teamlease Digital; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

Teamlease Digital in Singapore is seeking an experienced Mainframe System Administrator / z/OS System Programmer to support and manage the organization’s mainframe infrastructure and platform technologies.

You will administer CICS, MQ, z/OS, RACF, JCL, and related subsystems, pursue platform enhancements, and ensure security, availability, and compliance. The role also involves coordinating with vendor teams for upgrades and providing Level 3 support.

Qualifications

• Hands-on experience with mainframe operating systems and administration (z/OS, TSO, JES2, ISPF).
• Experience with CICS and MQ messaging.
• Knowledge of mainframe hardware, storage, and tape technologies.
• Strong understanding of security (RACF) and JES2 scheduling.

Responsibilities

• Administer and maintain Mainframe CICS, MQ, and z/OS environments.
• Design, install, configure, and deploy host infrastructure and solutions.
• Provide Host Platform L3 technical support and on-site/on-call assistance.
• Plan maintenance, upgrades, and change schedules to ensure availability.
• Manage technology risks, controls, and audit support for the Host Platform.

Skills

Mainframe OS

z/OS

CICS

JCL

MQ

RACF

TSO

JES2

ISPF

Storage & Tape

Job description

Teamlease Digital in Singapore is seeking an experienced Mainframe System Administrator / z/OS System Programmer to support and manage the organization’s mainframe infrastructure and platform technologies.

You will administer CICS, MQ, z/OS, RACF, JCL, and related subsystems, pursue platform enhancements, and ensure security, availability, and compliance. The role also involves coordinating with vendor teams for upgrades and providing Level 3 support.