Job Description

Singapore, Singapore

Company: Singtel Group

At Singtel, our mission is to Empower Every Generation. We are dedicated to fostering an equitable and forward-thinking work environment where our employees experience a strong sense of Belonging, to make meaningful Impact and Grow both personally and professionally. By joining Singtel, you will be part of a caring, inclusive and diverse workforce that creates positive impact and a sustainable future for all.

This role will work with a team of motivated, articulate and knowledgeable IT professionals.

The primary task will be focusing on improving the stability and performance of the system, maintaining and improving the security posture of the systems, continuous monitoring of system health, and troubleshooting issues that arise.

He must be exceptionally strong in Linux operating systems and other Unix system administration, a subject matter expert, able to provide sound proofs-of-concepts, willingness to perform cross-functional duties as necessary to aid the team and have a proven history of creating tools and automating routine IT/Business tasks.

He must also have experience in automation and configuration tool, such as Puppet, Ansible and Red Hat Satellite.

Responsibilities

Incident Management

Primarily responsible for level 3 Technical Support, Systems Management, Administration and Project Support for Unix and Linux platform.

Participate in 24/7 on-call operational support, which includes being available to assist with issues when not on call.

Assist and respond promptly to incident, investigate & provide temporary &/or permanent resolution of incidents escalated.

Performance and Capacity Management

Ensuring availability and performance of the Linux system that support the application system.

Installation, configuration and upgrade of Linux systems management software.

Proactively monitor the Linux systems to ensure secure services with minimum downtime.

Perform capacity planning, ensure high resiliency and optimal performance involving the associated hardware resources allocated to the operating system.

Maintain Linux security, managing access, privileges, role and database account that supports the application.

Responsible for providing trend analysis to management team to enable them to make informed decisions regarding resource management.

Change Management

Ensure that change management process is properly followed.

Plan and co-ordinate system changes. Present to CAB (change approval board) for changes that going into production for approval of change.

Manage changes through change request process & provide status reports to the relevant parties. (Service Now)

Operations and Support Management

Install and maintain security patches on the operational and development system, which includes but is not limited to, Red Hat Linux, Suse Linux, Apache Tomcat.

Perform daily system monitoring, verifying the integrity and availability of all hardware, server resources, systems and key processes, reviewing system and application logs, and verifying completion of scheduled jobs such as backups.

Perform regular file archival and purge as necessary.

Create, change, and delete user accounts per request as necessary.

Automate BAU tasks via shell scripting or tools, such as Ansible.

Write technical documents to include process, technical engineering and configuration documents as needed.

All other Linux administration responsibilities as assigned.

Provisioning of servers and services

Maintain our Linux infrastructure standard operating environment, including configurations and security management.

Highly proficient in provisioning of Linux VMs or Unix LPARs, LDOMs, OS installation, configuration and fine tuning.

Project manage operation projects related to Linux/Unix.

Automation

Hands-on experience in puppet coding as a primary automation skill, familiar with Ansible.

Vendor management

Work together with Infrastructure Manage Service vendor for RCA/PCA and adhere to Service Level Agreements.

Education and Qualifications - Degree in IT, Computer or Engineering

Work Experience - Possess a minimum of 8 years in-depth Linux (Redhat and Oracle Linux) administration experience in an enterprise level environment.

Strong Knowledge with experience in RedHat Clustering.

Strong Knowledge with experience in scripting such as Shell, Bash, Perl, Ruby and etc

2 Years of experience in Puppet coding.

Singtel