217 System Administration jobs in Singapore

Seeking an exceptional System Administrator to join our organization. As a key member of the IT team, you will be responsible for ensuring the security and compliance of our systems. Your expertise in system administration and cybersecurity will play a crucial role in driving our company's growth and excellence in IT.

• Overall system & security administrations
• Ability to administrate M365, Domains, GPOs, File Permission hierarchy, Events, PowerShell and achieve with secured setup
• Open to lead/carried-out security implementations, investigations, incidents, documentations
• Conducts periodical assessment of cybersecurity risks for onshore & offshore, ensuring compliance-in-checks
• Preparation of cybersecurity information and awareness training/topics
• Open opportunity of Network administration on assignment in a non-cisco environment
• Foster team collaboration with L1 team on day-to-day requirement
• Assist on other related administrative duties

• At least 3+ years of system administration, with foresight in cybersecurity areas
• Preferrable with MCSA/MCSE, Windows Server Hybrid Administrator Associate, CCNA or equivalent
• Good to have CISSP, Security+ or past relevant security implementation work or documentation
• Familiarity with IMO guidelines, ISO27001, ISO9000 are commendable
• Full independence and ready to respond effectively on security incidents and escalations
• A hands-on person, commitment on the tech-end, and of excellent problem-solving, analytical abilities
• Excellent tech-savvy, always motivated and continuous forward-learning mentality

• At least a Diploma/Degree in Computer Science, Information Systems, Science, Engineering, or an Equivalent.

• Have good knowledge and skillset in the following platforms and applications:
• SAP Systems installation, configuration, upgrade, patching, administration and monitoring (SAP NetWeaver, SAP Solution Manager, SAP ECC)
• Database (SAP HANA, Sybase ASE Database, SAP IQ).
• Operating Systems (Windows Server, Linux).
• Microsoft Applications (Active Directory, System Centre Suite).
• Management Tools (SCCM, WSUS, SEPM, SCVMM). Virtualisation Platform (VMware, Hyper-V).
• Storage and Backup (Symantec NetBackup).
• Web Tools (F5 Load Balancer, Proxy/Reverse Proxy Setup, Apache, IIS, SAP Web dispatcher).
• IT Security Hardening on Windows Server and Linux.
• Various methodologies of SAP system cloning/copy (Hierarchical/Homogeneous).
• SAP backup and restore procedures for database-specific and OS-specific systems,
• Ability to work independently and efficiently, managing timelines and expectations and producing high-quality deliverables and support with minimum supervision.
• Good planning, communication and coordination skills.
• Good team player, responsible and conscientious, responsive, pro-active.
• Required Working Experience for Basis Support
• At least 3 years of working experience in SAP Basis.
• At least 3 years of experience in IT infrastructure, system implementation and support.
• Experience in client copies, system cloning/copy (Heterogeneous/Homogeneous), transport management, user accounts management, patch management, and backup/restore of SAP systems is preferred.
• Experience in installation, configuration, and maintenance of core SAP platforms is preferred.
• Experience in the administration of Microsoft Technologies is preferred.
• Experience in the administration of Linux is preferred.
• Experience in HR projects is preferred.

We are seeking a highly skilled System Administrator to join our team.

The ideal candidate will possess excellent technical skills, including experience with Active Directory, Windows Update Services, and DNS records.

• Technical Requirements:
• Active Directory administration
• Windows Update Services management
• DNS record maintenance
• Group Policy management
• Problem resolution and escalation
• System recovery and deployment
• Patch implementation and testing
• Service request completion and reporting

Benefits of the Role:

• Opportunity to work on a range of technical projects
• Chance to develop and maintain system configurations
• Collaboration with experienced professionals in the field
• Professional growth and development opportunities

How to Apply:

• Candidates must have relevant technical experience
• Excellent communication and problem-solving skills
• Ability to work independently and as part of a team
• Willingness to learn and adapt to new technologies

Education Qualification

• At least a Diploma/Degree in Computer Science, Information Systems, Science, Engineering, or an Equivalent.

Required Competencies

• Have good knowledge and skillset in the following platforms and applications:
• SAP Systems installation, configuration, upgrade, patching, administration and monitoring (SAP NetWeaver, SAP Solution Manager, SAP ECC)
• Database (SAP HANA, Sybase ASE Database, SAP IQ).
• Operating Systems (Windows Server, Linux).
• Microsoft Applications (Active Directory, System Centre Suite).
• Management Tools (SCCM, WSUS, SEPM, SCVMM). Virtualisation Platform (VMware, Hyper-V).
• Storage and Backup (Symantec NetBackup).
• Web Tools (F5 Load Balancer, Proxy/Reverse Proxy Setup, Apache, IIS, SAP Web dispatcher).
• IT Security Hardening on Windows Server and Linux.
• Various methodologies of SAP system cloning/copy (Hierarchical/Homogeneous).
• SAP backup and restore procedures for database-specific and OS-specific systems,
• Ability to work independently and efficiently, managing timelines and expectations and producing high-quality deliverables and support with minimum supervision.
• Good planning, communication and coordination skills.
• Good team player, responsible and conscientious, responsive, pro-active.
• Required Working Experience for Basis Support
• At least 3 years of working experience in SAP Basis.
• At least 3 years of experience in IT infrastructure, system implementation and support.
• Experience in client copies, system cloning/copy (Heterogeneous/Homogeneous), transport management, user accounts management, patch management, and backup/restore of SAP systems is preferred.
• Experience in installation, configuration, and maintenance of core SAP platforms is preferred.
• Experience in the administration of Microsoft Technologies is preferred.
• Experience in the administration of Linux is preferred.
• Experience in HR projects is preferred.

Our organization is seeking a highly skilled and motivated SAP Basis System Administrator to join our team. As a key member of the SAP Basis Team, you will be responsible for ensuring the smooth operation and maintenance of our SAP systems.

• Perform regular system installations, upgrades, patching, and landscape maintenance to ensure optimal system performance.
• Administer SAP databases, including HANA and MSSQL, to guarantee system health and performance.
• Monitor systems, troubleshoot issues, and optimize performance to minimize downtime and ensure high availability.
• Manage transports, system backups, and disaster recovery planning and testing to mitigate risks and ensure business continuity.
• Collaborate with infrastructure, cloud service, and functional teams to achieve common goals and objectives.
• Handle user administration, role assignments, and security configurations to ensure secure access and data protection.
• Provide on-call support for production systems as part of a support rotation to ensure 24/7 coverage.
• Maintain clear and up-to-date documentation of system configurations, procedures, and enhancements to facilitate knowledge sharing and transfer.

• A Bachelor's degree in Computer Science, Information Technology, or a related field.
• A genuine interest in SAP technology, system administration, or enterprise IT.
• Familiarity with operating systems such as Linux or Windows Server.
• Basic understanding of databases and networking concepts.
• Strong problem-solving skills and the ability to communicate clearly with team members.
• No prior SAP experience is required, but internships, projects, or certifications will be advantageous.

• A competitive salary package.
• A comprehensive benefits program, including health insurance, retirement savings plan, and paid time off.
• The opportunity to work with a talented and dedicated team.
• Ongoing training and professional development opportunities.
• A dynamic and supportive work environment.

Education Qualification

• At least a Diploma/Degree in Computer Science, Information Systems, Science, Engineering, or an Equivalent.

Required Competencies

• Have good knowledge and skillset in the following platforms and applications:
• SAP Systems installation, configuration, upgrade, patching, administration and monitoring (SAP NetWeaver, SAP Solution Manager, SAP ECC)
• Database (SAP HANA, Sybase ASE Database, SAP IQ).
• Operating Systems (Windows Server, Linux).
• Microsoft Applications (Active Directory, System Centre Suite).
• Management Tools (SCCM, WSUS, SEPM, SCVMM). Virtualisation Platform (VMware, Hyper-V).
• Storage and Backup (Symantec NetBackup).
• Web Tools (F5 Load Balancer, Proxy/Reverse Proxy Setup, Apache, IIS, SAP Web dispatcher).
• IT Security Hardening on Windows Server and Linux.
• Various methodologies of SAP system cloning/copy (Hierarchical/Homogeneous).
• SAP backup and restore procedures for database-specific and OS-specific systems,
• Ability to work independently and efficiently, managing timelines and expectations and producing high-quality deliverables and support with minimum supervision.
• Good planning, communication and coordination skills.
• Good team player, responsible and conscientious, responsive, pro-active.
• Required Working Experience for Basis Support
• At least 3 years of working experience in SAP Basis.
• At least 3 years of experience in IT infrastructure, system implementation and support.
• Experience in client copies, system cloning/copy (Heterogeneous/Homogeneous), transport management, user accounts management, patch management, and backup/restore of SAP systems is preferred.
• Experience in installation, configuration, and maintenance of core SAP platforms is preferred.
• Experience in the administration of Microsoft Technologies is preferred.
• Experience in the administration of Linux is preferred.
• Experience in HR projects is preferred.

Job Summary
We are seeking an experienced Linux Administrator with over 6 years of hands-on expertise in managing and supporting Linux systems. The ideal candidate must hold certification in Red Hat Linux, Oracle Linux, or AWS, and have strong skills in system administration, troubleshooting, and automation.

Key Responsibilities

• Install, configure, and maintain Linux servers (Red Hat, Oracle Linux, AWS Linux).
• Perform system upgrades, patching, and performance tuning.
• Manage user accounts, access controls, and security policies.
• Monitor server health, troubleshoot issues, and ensure high availability.
• Support virtualization and cloud deployments (AWS preferred).
• Automate operational tasks with shell scripting or other tools.
• Implement and maintain backup, recovery, and disaster recovery processes.
• Work with cross-functional teams to support business-critical applications.
• Maintain documentation of system configurations and standard operating procedures.

Requirements

• Bachelor’s degree in Computer Science, Information Technology, or related field.
• 6+ years of Linux administration experience in enterprise environments.
• Certification in Red Hat Linux, Oracle Linux, or AWS (mandatory).
• Strong knowledge of Linux server administration, clustering, and storage.
• Hands-on experience with virtualization (VMware, KVM) and cloud platforms.
• Proficiency in shell scripting or automation tools (Ansible, Puppet).
• Good understanding of networking and security concepts.
• Strong troubleshooting and problem-solving skills.
• Ability to work independently and in a team environment.

EA License: R

Company EA License: 11C4879

• Administer and support AS/400 System i, including planning, implementation, and upgrades;
• Manage OS400 security, BRMS backup, operations monitoring, alerting, and data replication;
• Perform installation, configuration, and maintenance of 3rd party tools (e.g., MQ, Thenon, Windows Menu, Robot Schedule, Alert Console);
• Plan, review, and execute OS, PTF, and 3rd party software upgrades;
• Support PowerHA, Admin Domain, VIOS management, and copy services in an iASP environment;
• Troubleshoot data, application, and system performance issues using tools such as IBM iDoctor, DBMON Traces, and Job Watcher;
• Provide administration and operational support for IBM DS8K storage and SAN switches (including global and metro mirror);
• Implement and manage ACS client installation and setup, SKLM, and Spectrum Control;
• Ensure compliance with access and security guidelines for AS/400 networked systems;
• Collaborate with BAU project support and infrastructure teams, providing operational stability and project delivery;

• A good degree with experience in administration and troubleshooting of AS/400 System i with iASP model;
• Strong knowledge of IBM DS8K storage and SAN switches, including mirroring configurations;
• Good understanding of TCP/IP protocols and network troubleshooting techniques;
• Experience with PowerHA, Admin Domain, copy services, and VIOS management;
• Knowledge of SQL, CL, RPG, and proficiency with MS Office tools (including MS Access);
• Familiarity with ACS client, SKLM, Spectrum Control, and 3rd party system tools;
• Knowledge of ITIL processes and best practices;
• Strong troubleshooting and analytical skills for system, network, and application-level issues;
• Ability to multitask and manage multiple initiatives simultaneously;
• Willingness to support off-hours or weekends when required for deployment and upgrade activities.

The ideal candidate will be proactive, detail-oriented, and able to work independently. Excellent communication and problem-solving skills are essential for this role.

We are looking for an experienced Senior Linux Administrator to join our team and take ownership of our critical Linux infrastructure. You will be responsible for ensuring high availability, performance, security, and scalability of enterprise-grade systems across on-premises and cloud environments.

If you’re passionate about Linux, automation, and large-scale infrastructure, we’d love to hear from you!

• Manage and maintain enterprise Linux environments (RHEL, CentOS, Ubuntu/Debian).
• Automate infrastructure deployment and configuration using IaC tools (Ansible, Terraform, cloud APIs).
• Support Linux systems on high-density HPE Enterprise Hardware (MoonShot, ProLiant).
• Deploy and manage Linux environments in Microsoft Azure and hybrid cloud setups.
• Implement and optimize Linux system monitoring (Zabbix, Nagios, Prometheus, Icinga, etc.).
• Create Linux binary packages from source (RPM/DPKG).
• Support virtualization technologies (QEMU/KVM, VMware).
• Manage automated OS/application installations (e.g., Kickstart).
• Collaborate on security initiatives, identity management (Azure AD, SAML, Active Directory), and SIEM solutions (Splunk).
• Contribute to technical documentation, process improvements, and change management.

• 5+ years of hands-on enterprise Linux administration (senior-level).
• RHCE certified (or equivalent deep Linux expertise).
• Strong experience with:
• Linux automation at scale (Ansible, Terraform, Cloud APIs).
• Linux packaging (RPM/DPKG).
• Monitoring and logging platforms.
• TCP/IP networking and IT security concepts.
• Proficiency in scripting (Shell, Python, or Perl).
• Exposure to FreeBSD, embedded Linux, or SAP on Linux (nice to have).
• Working knowledge of:
• Microsoft Azure cloud services (SaaS/PaaS desirable).
• Active Directory, Azure AD, SAML SSO.
• VMware and Microsoft Windows Server/desktop systems.

• Experience with Thin/Zero Client architectures.
• Knowledge of Linux Kernel internals.
• ITIL framework experience.
• International/multi-regional IT operations exposure.

• Strong communication skills (English mandatory).
• Excellent documentation and coaching ability.
• Detail-oriented with strong problem-solving skills.
• Team player with a collaborative mindset.
• Customer service oriented and self-motivated.

• Mid-Senior level

• Full-time

• Other

• IT Services and IT Consulting