640 Systems Administrator jobs in Singapore

The Systems Administrator is responsible for the installation, configuration, maintenance, and reliable operation of computer systems, servers, and networks, with a strong emphasis on security and compliance in today’s evolving threat landscape. This role ensures uptime, performance, resource availability, and robust protection of the IT infrastructure that supports business operations.

Key Responsibilities

Infrastructure Management

• Install, configure, and maintain physical and virtual servers, networking, firewall, operating systems (Windows and Linux), and enterprise software applications

• Manage Active Directory, DNS, DHCP, file servers, print servers, and Office 365 environments

• Perform regular system backups, recovery, and disaster recovery testing

• Coordinate with vendors for hardware/software procurement, licensing, and support

Security & Compliance

• Implement and maintain IT security protocols, including firewalls, intrusion detection/prevention systems, antivirus, and endpoint protection

• Perform regular patch management for operating systems, applications, and firmware

• Conduct vulnerability assessments, risk analysis, and security audits in alignment with frameworks such as CISSP domains, NIST, and ISO 27001

• Enforce identity and access management best practices by applying the principles of least privilege and zero trust

• Maintain security documentation, incident logs, and compliance reports

Monitoring & Incident Response

• Use system monitoring and SIEM tools to track system health, performance, and security events, if any

• Troubleshoot and resolve escalated hardware, software, and network issues promptly

• Lead disaster recovery and business continuity planning, testing, and execution

User & Access Management

• Manage user accounts, group policies, and access rights across systems and applications

• Provide escalation-level support to internal teams, ensuring security policies are consistently applied

Documentation & Process Improvement

• Keep detailed records of configurations, procedures, and change management activities

• Recommend and implement process improvements to enhance performance, security, and resilience

Qualifications & Skills

• Bachelor’s degree in Computer Science, Information Technology, or a related field

• Professional certification preferred: CCNA, CISSP, Microsoft Certified: Windows Server, CompTIA Security+, or equivalent

• 3-5 years of experience in systems administration or IT infrastructure support

• Strong knowledge of Windows and/or Linux server environments

• Experience with cybersecurity tools, vulnerability management, and incident response

• Excellent troubleshooting, problem-solving, and multitasking abilities

As a skilled support professional, this role offers the opportunity to contribute to the smooth operation of our systems and facilities. Key responsibilities include providing administrative assistance, managing procurement and contract documentation, overseeing equipment certification, and maintaining accurate inventory records.

• Offer general administrative support to the team
• Manage procurement and contract paperwork efficiently
• Ensure equipment certification and maintain inventory accuracy
• Coordinate with contractors and colleagues to meet objectives
• Organize documentation and prepare monthly reports to track progress
• Conduct regular stock checks and report on inventory levels
• Arrange contractor access to designated areas as required
• Closing maintenance work orders in a timely manner
• Support other tasks assigned by engineers or managers as needed

• Manage and monitor all installed systems and infrastructure to ensure high levels of availability and performance.
• Install, configure, test, and maintain operating systems, application software, and system management tools.
• Proactively identify potential issues and implement fixes to prevent downtime and improve overall system efficiency.
• Collaborate with developers to resolve technical issues and improve application performance.
• Develop and maintain custom scripts to automate tasks and improve system efficiency.
• Participate in the design and implementation of information and operational support systems.
• Provide level 2 and 3 support for IT-related issues.
• Liaise with vendors and other IT personnel to resolve complex technical issues.

• Bachelor's or Master's degree in Computer Science or a related field.
• Proven experience in administering and tuning application stacks (e.g., Tomcat, JBoss, Apache, Ruby, NGINX).
• Hands-on experience with virtualization and containerization (e.g., VMware, Virtual Box).
• Experience with cloud platforms (e.g., AWS) and automation software (e.g., Puppet, cfengine, Chef).
• Strong scripting skills (e.g., shell scripts, Perl, Ruby, Python).
• Deep understanding of networking principles (OSI network layers, TCP/IP).

Job Title: Database Systems Administrator

We are seeking a skilled Database Systems Administrator to join our team. In this role, you will be responsible for ensuring the stability and integrity of our databases.

Key Responsibilities:

• Database Administration: You will be responsible for administering multiple database instances across different platforms, including MSSQL 2016/2017/2022.
• Process Improvement: You will monitor and refine processes, procedures, and systems to optimize operational stability and integrity.
• Troubleshooting: You will have hands-on experience in troubleshooting patching issues and basic knowledge of Linux operating system (RedHat).
• Collaboration: You will coordinate with application teams on decision-making and scheduling to ensure smooth patching operations.
• Documentation: You will prepare documents to raise Change Requests.

Requirements:

• Experience: Minimum 2-8 years of experience in MSSQL 2016/2017/2022 Database Administration.
• Certifications: Relevant certifications in database administration would be an advantage.
• Skills: Strong understanding of database concepts, experience with database upgrade and patching, and basic knowledge of Linux operating system (RedHat).

Job Title: Cloud Systems Administrator

The ideal candidate will have hands-on experience with virtualization platforms, cloud architecture, and VMware. We are seeking a skilled systems administrator to manage and maintain our virtualized environment.

Key Responsibilities:

• Monitor VM health and performance in the new alternate hypervisor environment.
• Familiarity with virtualization technology such as vMotion, DRS, HA, and VM snapshots.
• Experience in supporting VM migration and firmware patching.
• Diagnose issues and resolve any performance or compatibility issues that arise post-migration.
• Ability to work with stakeholders for collaboration and support.
• Resolve migration failures and handle any errors or failures that may have occurred during the migration process.

Requirements:

• Degree in Computer Engineering/Information Technology/Computer Science.
• 10 years of related experience and knowledge in DC environments, with some time spent on VMware and cloud architecture.
• Willingness to work night hours during project migrations.

Job Title: Experienced Systems Administrator

We are seeking a highly skilled Systems Administrator to join our organization on a shift schedule.

• Perform general administration tasks to ensure the smooth operation of customer systems and infrastructure.
• Conduct daily operational tasks, scheduled tasks, system defects management, and monitoring system and network health status using Tivoli and Solarwinds.
• Submit daily and incident reports to stakeholders.
• Assist customers with exercise support and system audit services.

Key Responsibilities:

• Administer and manage computer systems, networks, and infrastructure.
• Develop and implement policies and procedures to ensure data security and compliance.
• Monitor system performance and troubleshoot issues in a timely manner.
• Collaborate with cross-functional teams to resolve technical issues and improve system efficiency.
• Stay up-to-date with industry trends and technologies to recommend improvements to existing systems.

Requirements:

• Diploma in Computer Science, Information Technology, Electrical and Electronics Engineering or equivalent qualification.
• At least 2 years of relevant experience as a System Administrator or in a related profession.
• Proficient with system monitoring, configuration, network systems, and system backup processes.
• Hands-on experience with hardware installation and deployment.
• Excellent knowledge of MSCE, Unix, Redhat, SQL, Cisco Networking, SAN Storage, VMware, Firewall, Tivoli, and Solarwinds is advantageous.

Working Schedule:

This is a 2-year agency contract position. The working schedule includes 12-hr shifts, weekends, and public holidays.

IT Program Engineer Role

The IT Program Engineer role is a critical position within our organization, responsible for ensuring the smooth operation of our digital technology and cloud transformation services. As an IT Program Engineer, you will play a key role in managing service delivery for applications, servers, and network infrastructure.

Key Responsibilities:

• Manage service delivery for applications, servers, and network infrastructure.
• Support and respond to user support/project/change requests, operational, cyber alerts, and incidents for PMO-PSB systems.
• Co-manage centralized monitoring dashboards and support PMO-PSB system verification testing after each routine patch with GTO Ops and vendor.
• Provide support to the programme management team in areas of technical solution analysis, design, planning, coordination, implementation, and testing.
• Prepare project-related reports and documentation for the PMO team.
• Maintain and update IT asset inventory, including tagging and tallying of assets.
• Execute IMAC services for end-user computing and infrastructure equipment.
• Liaise with internal teams and external vendors to ensure service standards and service level agreements are fulfilled.

Requirements:

• Diploma or degree in Information Technology or a related field.
• Possess relevant experience in IT Service Delivery or IT Operations.
• Basic knowledge and hands-on experience across IT infrastructure and systems.
• Strong organizational and documentation skills.
• Ability to multitask and manage priorities effectively.
• Experience in IT asset management and IMAC services is a strong advantage.
• Familiarity with project management methodology and lifecycle would be an advantage.
• Good analytical skills in diagnosing technical issues and ability to offer advisories and support.

Desirable Skills:

• Coding (such as C#, Java, JavaScript).
• DevOps/DevSecOps.
• Virtualisation and/or Cloud Computing (such as AWS, Azure).
• Database and Storage.
• Middleware and Services.
• Cybersecurity (such as best practices, system hardening, threat and vulnerability management).
• Windows/Linux server administration.
• Hardware, Infrastructure and Network.
• Software/Systems integration across one or more software/hardware components.
• Service delivery and management.

The role of a Systems Engineer involves supporting infrastructure deployments and operational systems support across both company-hosted environments and customer sites.

You will work across various platforms, including Windows, Linux (RHEL), VMware, and Hyper-V, performing setup, patching, and troubleshooting tasks in a lean and dynamic engineering team.