Mainframe System Administrator

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

Job Description

We are looking for an experiencedMainframe System Administrator / z/OS System Programmerto support and manage the organization's mainframe infrastructure and platform technologies.

Key Responsibilities

The role will be responsible for administration, support, maintenance, and enhancement of:

• Mainframe CICS and MQ
• IBM zSeries / Mainframe hardware
• z/OS operating system
• IBM and third-party vendor system software
• Mainframe Storage Area Network (SAN)
• Attached disk storage systems
• Attached tape storage systems

Role & Responsibilities

• Create and maintainHost Platform technology strategy, architecture, and roadmap
• ManageHost Platform infrastructure initiatives and projects
• Design, install, configure, and deploy host infrastructure and solutions
• ProvideHost Platform project support and Level 3 (L3) technical support
• Plan and manage Host Platform maintenance, upkeep, and change schedules
• Execute and deploy Host Platform upgrades, maintenance, and changes
• Manage technology risks and controls and provide audit support
• PerformRCSA (Risk and Control Self-Assessment)activities for the Host Platform
• Ensure platform availability, stability, security, and operational compliance

Required Skills

Candidates should have hands‑on experience withMainframe operating systems and administration, including:

• z/OS
• TSO
• JES2
• ISPF
• RACF
• JCL
• CICS
• MQ
• Mainframe hardware and system software
• Mainframe storage and tape technologies

Candidate Profile

• Strong experience inMainframe System Administration / z/OS
• Banking and financial services experience preferred
• Good understanding of infrastructure operations, production support, change management, risk, and controls
• Experience providing L3 support and working with multiple technology/vendor teams