111 System Administrator jobs in Singapore

System Engineer is a professional responsible for managing and maintaining the Windows-based infrastructure and associated technologies within an organization. Their primary role is to ensure the stability, security, and performance of Windows-based systems and applications.

Responsibilities:

• Administer Red Hat Enterprise Linux: installation, patching, upgrades, services (HTTP, NFS, LDAP, cron, etc.)
• Automate baseline installs and updates; manage services at boot-level, networking, users/groups, disk volumes (LVM, dm‑multipath), SELinux/PAM
• Monitor, tune, backup, and proactively fix performance issues
• Create and run Shell/perl/awk scripts for automation and troubleshooting
• Collaborate with peer teams and infrastructure stakeholders across business units
• Provide level‑3 support for major incidents, and participate in rollout of new services

Requirements:

• At least 5years of working experience in administering Linuxsystems.
• Min Diploma in Computer Science, Computing, Engineering, IT or equivalent.
• Level 3 certified ontology: RHCSA minimum; RHCE preferred

Overview:
We are seeking a mid-level System Administrator with solid experience in UNIX/Linux (Red Hat) and Windows Server environments. You will manage, secure, and optimize hybrid systems, ensuring performance, reliability, and compliance.

Key Responsibilities:
• Administer and maintain Red Hat Linux 9 and Windows Server 2022 systems.
• Perform system hardening, deployment, and patch management to meet security standards.
• Manage virtualization infrastructure using VMware ESXi, including configuration and resource optimization.
• Monitor and maintain system health, backups, and recovery processes.
• Implement and manage Symantec Endpoint Manager for endpoint protection.
• Troubleshoot system issues, perform root cause analysis, and ensure high uptime.
• Collaborate with cross-functional teams on deployments and upgrades.
• Maintain system documentation, procedures, and configuration records.

Requirements:
• Red Hat Certified System Administrator (RHCSA) or higher (mandatory).
• 4–5 years of experience in system administration across Linux and Windows platforms.
• Strong understanding of virtualization, networking, and security practices.
• Experience with automation and configuration tools is an advantage.
• Good problem-solving and communication skills.

Preferred:
• Experience with monitoring tools such as Zabbix or Nagios.
• Knowledge of scripting (Bash, PowerShell, or Python).

EA License: R

Company EA License: 11C4879

Responsiblities

• Handle daily technical support activities on desktop, server administrative management and data backup
• End user helpdesk support including maintaining system and user accounts and applications
• Set-up computers and install software for various applications and programs.
• Prepare and maintain system and and technical documents
• Ad-hoc projects assigned by HQ office
• Attend to Vessels for all IT related issues.

Requirements

• NITEC / Diploma in Computer Science, Computer Engineering
• Knowledge in Firewall, Cisco Routers, WAN/LAN, Server adminstration would be advantage
• Good knowledge in Infrastructure or Network (Can perform computer troubleshooting will be highly consider)
• Good interpesonal, communication and problem-solving skills with a pleasant personality
• Pro-active, committed to work and result oriented
• Independent and able to work with a team
• Conversant in English and Mandarin, able to liaise with Taiwan-counterparts

Responsibilities:

Responsible for the overall functionality and operations of network infrastructure, PC desktops, Notebooks and hardware peripherals

Deployment of PC and Notebook to users

Installation, maintenance and upgrading of IT hardware and software

Troubleshooting all hardware peripherals

Auditing of all PCs and Notebooks for software compliance for IT audit

Checking backup jobs to Disaster Recovery Site

Any other ad hoc duties or assignments as assigned by the supervisor

Requirements:

1. Degree/Diploma in Computer Science or Information Technology

related disciplines

1. Familiarity with Windows systems and environments

2. Must have strong coordination and follow up skill

3. Good communication skills, independent and team player

4. Good problem-solving skills with minimal supervision

5. Able to adapt in a fast-paced environment

6. Fresh graduates are welcome as training will be provided

Role Description

This is a full-time on-site role for a System Administrator . The System Administrator will be responsible for managing and maintaining computer systems and networks, providing technical support, and troubleshooting issues. The role involves configuring and updating system software and hardware, ensuring the reliability and security of IT infrastructure, and ensuring optimal performance and efficiency of systems.

Qualifications

• Proficiency in System Administration and Network Administration
• Strong Troubleshooting and Technical Support skills
• Extensive knowledge in Information Technology
• Excellent problem-solving and communication skills
• Ability to work independently and collaboratively in a team environment
• Bachelor's degree in Computer Science, Information Technology, or a related field is preferred
• Industry certifications such as CompTIA Network+, CompTIA Security+, and Microsoft Certified Systems Administrator (MCSA) are a plus

Key Responsibilities:

• Administer and maintain RHEL systems across dev, test, and production.
• Manage and troubleshoot JBoss application servers.
• Support and optimise OpenShift container platforms.
• Use Red Hat Satellite for provisioning, patching, and configuration.
• Implement security and compliance best practices.
• Perform upgrades, patches, and routine maintenance.
• Collaborate with development teams for deployments.
• Maintain system documentation and participate in on-call support.

Qualifications:

• Bachelor's degree in IT/CS or related field.
• 6+ years' experience in Unix/Linux administration with RHEL.
• Hands-on expertise in OpenShift and JBoss administration.
• Should be able to work on 24*7 rotational shift

Job Highlights:

• Salary: Up to $6,500/Month
• Contract Duration: 12 months contract
• Nearest MRT: Bedok Mrt Station

We are looking for a Senior Systems Administrator to join our dynamic team responsible for the operations, support, maintenance, and R&D of the Automatic Fare Collection (AFC) system. You will play a key role in ensuring continual innovation and operational excellence in the infrastructure systems.

Key Responsibilities:

• Provisioning, installation, configuration, and maintenance of systems hardware and software related to on-premise environments and Government Commercial Cloud (GCC).
• Participate in technical research and development to enable continuous innovation within the infrastructure.
• Ensure system hardware, software systems, and related processes align with organizational values and meet performance standards.
• Accountable for maintaining systems like Linux, Windows, UNIX (AIX), and backup software tools including Veritas NetBackup and Tivoli Storage Manager that support IT infrastructure.

• Degree in Engineering, Data Communications, or Computer Science (Diploma holders with relevant experience are also encouraged to apply).
• System Engineer certification in Linux and/or Microsoft (Virtualization and Cloud experience is an advantage, but not a must).
• Minimum 2 years of experience in system administration.
• Experience with Linux scripting, VMware Virtualization, and Cloud technologies (GCC experience is a plus).
• Strong troubleshooting skills with experience in Linux/Unix and the ability to solve complex system issues independently.

Only shortlisted applicants will be contacted.

Laurence Andaya

(Reg No.: R

BGC Group Pte Ltd (Outsourcing)

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DSO National Laboratories (DSO) is Singapore's largest defence research and development (R&D) organisation, with the critical mission to develop technological solutions to sharpen the cutting edge of Singapore's national security. At DSO, you will develop more than just a career. This is where you will make a real impact and shape the future of defence across the spectrum of air, land, sea, space and cyberspace.

The Robotics Division focuses on the research and development of advanced robotic systems and technologies across the air, land and maritime domains. These include aerodynamics, autonomy, platform control, guidance and navigation technologies.

People are DSO's greatest asset. You will get to realise your career aspirations and develop your own niche either as a deep technical expert or a leader in the team. With frequent career dialogues and a robust training and development framework, we will provide you with the necessary development tools for you to reach your potential. You will also be recognised and rewarded through competitive remuneration packages and scholarship opportunities.

System Administrator (Robotics)

In this role, you will:

• Assisting with setting up of IT systems in the Division, including requirements gathering and implementation of suitable hardware and software solutions
• Installation of software on servers / end point devices, and testing and troubleshooting after installation where applicable
• Assisting with implementation and maintenance of IT security of systems / devices in accordance with DSO Cybersecurity Policy
• Performing periodic preventive and corrective maintenance, updates and upgrades to software / hardware in the Division, including Operating Systems, end point devices and applications
• Performing audit of IT systems to ensure compliance with DSO IT Security Policy
• Providing advice to Division staff on IT related matters
• Maintaining database of IT systems and endpoint devices in the Division, and provide reports to the Division Management on the status of the systems and devices

• Bachelor's Degree in Infocomm Technology or Engineering related fields
• Good understanding in IT administration and networking
• Knowledge and hands on experience in the following areas would be an advantage: windows environment and security applications, Linux environment and security applications, database administration, IT asset management
• Proficiency in OS and software patch management via patch management software

LINUX

TROUBLESHOOTING

MAINTENANCE

IT SYSTEMS

DATABASE MANAGEMENT

0 ~ 4 years

ROBOTICS

PERMANENT

ROBOTICS

SYSTEM INFRASTRUCTURE

Job Scope

• New accounts set-up on active directory and M365.

• Manage M365 application suites such MS Office, SharePoint, OneDrive and Teams.

• Support project deployments such setting up servers, installing applications and hardening the system security.

• Design and testing of proposed architecture and technologies.

• Familiarity with virtualization environment, virtual machines, storage technologies containerized applications and container orchestration platforms.

• Working experience with Video management software such Milestone, Nx Witness or HikCentral.

• Working experience with CCTV, IP Telephony and access control system.

• Knowledgeable in system hardening, patching and upgrading of OS, firmware and software.

• Run reports on system performance for teams and wider organization.

• Optimise processes and lead process improvement.

• Manage staff and user credentials and frameworks.

• Troubleshoot technical issues.

• Create and implement training for staff.

• Coordinate and provide support for the Firewall and network system.

• Ensure systems are secure and protected from breach or viruses.

• Risk mitigation planning.

• Owning a motorcycle and having the ability to ride with a valid license is an advantage.

• A Transport allowance will be provided.

• Equipped with CCNA for Snr. Post. / is an advantage for Jnr. Post.