74 Linux Administrator jobs in Singapore

Linux System Administration:

o Install, configure, and maintain Linux servers (CentOS, Ubuntu, Red Hat, etc.) and ensure high availability, security, and performance.

o Perform regular system updates, patching, and upgrades.

o Manage user permissions, file systems, and configurations in multi-server environments.

o Troubleshoot and resolve complex issues related to Linux systems.

• Docker Administration:

o Design, deploy, and maintain Docker containers across environments, ensuring efficient, scalable, and reliable deployments.

o Manage containerized applications, create Dockerfiles, and optimize Docker images.

o Monitor container performance and resolve issues related to container orchestration and networking.

o Integrate Docker with Continuous Integration/Continuous Deployment (CI/CD) pipelines.

• Automation & Scripting:

o Automate tasks and processes using shell scripting, Python, or other automation tools.

o Develop and maintain scripts for monitoring, reporting, and system health checks.

• Monitoring & Performance Tuning:

o Implement and configure monitoring tools to track server performance and container health.

o Proactively identify performance bottlenecks and optimize both system and application performance.

• Security & Compliance:

o Implement and enforce security best practices on Linux systems and Docker containers.

o Manage firewalls, access control lists (ACLs), VPNs, and other security protocols to ensure the integrity of the environment.

o Conduct regular security audits and ensure compliance with industry standards.

• Collaboration & Support:

o Work closely with development, DevOps, and infrastructure teams to ensure smooth deployments.

o Provide technical support and mentorship to junior administrators and other team members.

o Assist with troubleshooting and resolving issues within the production environment.

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Qualifications:

- 10+ years of hands-on experience with Linux system administration (Ubuntu, CentOS, RHEL).

Linux System Administration:

o Install, configure, and maintain Linux servers (CentOS, Ubuntu, Red Hat, etc.) and ensure high availability, security, and performance.

o erform regular system updates, patching, and upgrades.

o Manage user permissions, file systems, and configurations in multi-server environments.

o Troubleshoot and resolve complex issues related to Linux systems.

• D cker Administration:

o Design, deploy, and maintain Docker containers across environments, ensuring efficient, scalable, and reliable deployments.

o Manage containerized applications, create Dockerfiles, and optimize Docker images.

o Monitor container performance and resolve issues related to container orchestration and networking.

o Integrate Docker with Continuous Integration/Continuous Deployment (CI/CD) pipelines.

• A tomation & Scripting:

o Automate tasks and processes using shell scripting, Python, or other automation tools.

o Develop and maintain scripts for monitoring, reporting, and system health checks.

• M nitoring & Performance Tuning:

o Implement and configure monitoring tools to track server performance and container health.

o Proactively identify performance bottlenecks and optimize both system and application performance.

• S curity & Compliance:

o Implement and enforce security best practices on Linux systems and Docker containers.

o Manage firewalls, access control lists (ACLs), VPNs, and other security protocols to ensure the integrity of the environment.

o Conduct regular security audits and ensure compliance with industry standards.

• C llaboration & Support:

o Work closely with development, DevOps, and infrastructure teams to ensure smooth deployments.

o Provide technical support and mentorship to junior administrators and other team members.

o Assist with troubleshooting and resolving issues within the production environment.

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Qualifications:

- 10+ years of hands-on experience with Linux system administration (Ubuntu, CentOS, RHEL).

Description

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Key Responsibilities:

• Administer and maintain Linux/Unix servers across development and production environments.
• Troubleshoot and resolve issues with Unix/Linux-based applications .
• Develop, deploy, and support applications using RHEL, JBoss, WebLogic, MQ, and Kafka .
• Write and optimize SQL queries for Oracle and MySQL databases.
• Lead technical teams in the configuration, deployment, and performance tuning of infrastructure and middleware solutions.
• Design and implement automation solutions to streamline processes and reduce manual tasks.
• Monitor system performance, logs, and alerts to ensure high availability and reliability.
• Provide advanced support for infrastructure and middleware-related incidents and escalations.
• Collaborate with cross-functional teams for seamless project delivery and solution integration.
• Ensure systems meet security, patching, and compliance standards .
• Troubleshoot and resolve complex hardware, software, and networking issues .
• Automate routine tasks using shell scripting or configuration management tools .
• Maintain effective backup and disaster recovery strategies.
• Prepare and maintain detailed documentation of system configurations, procedures, and troubleshooting guides.
• Participate in on-call rotation and provide after-hours support as required.
• Contribute to overall IT strategy, architecture , and long-term infrastructure planning.
• Guide and mentor junior engineers, ensuring best practices are followed.

Required Qualifications:

• Bachelor’s degree in Computer Science, Information Technology , or a related field.
• 5+ years of experience in Linux system administration .
• Proven experience in technical delivery , infrastructure management , and middleware support .
• Hands-on expertise with JBoss, WebLogic, MQ , and Kafka .
• Proficiency in Unix shell scripting and strong command over SQL for Oracle/MySQL databases.

Preferred Qualifications:

• Red Hat Certified Specialist or equivalent certification.
• Experience with VMware administration and configuration .

• Seniority level Mid-Senior level

• Employment type Contract

• Job function Information Technology
• Industries Banking

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Ang Mo Kio, North East Community Development Council, Singapore 1 week ago

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Industry

Other

Category

IT & Technology

Sub Category

Technical Support & Administration

About the client:

Our client is a Reputed Bank.

Responsibilities:

• Install, configure, and manage RHEL servers ensuring security, performance, and high availability.
• Monitor, troubleshoot and optimize Linux infrastructure, including storage, networking and security.
• Design, implement and maintain anti-virus solutions to protect Linux system from malware and viruses.
• Developing, maintaining, and updating configuration management solutions, utilizing tools like Ansible to automate and streamline system administration tasks.
• Design, implement and maintain automation scripts using Ansible to streamline repetitive tasks, deployments, and configuration management.
• Proactively monitoring system performance and conducting capacity planning to anticipate resource needs and ensure optimal performance.
• Plan and perform scheduled preventive maintenance, OS patching/upgrades/hardening, system performance tuning, optimization, and capacity planning.
• Provide day-to-day systems administration and operations, including 24x7 standby.

Requirement:

• 5 years of relevant working experience as a Unix administrator.
• Strong technical knowledge and experience in administration and maintenance of Linux.
• Strong background in Unix technologies including High Availability and virtualization.
• Experience with anti-virus implementation in RHEL. Strong knowledge on anti-virus solutions like SEP, McAfee etc.
• Storage admin/SAN technology from system perspective.
• Experience in VMware
• Familiarity with ITSM, ITIL, or other relevant frameworks is a plus.

Interested candidates, who wish to apply for the above position, please send in your resume to

We regret that only shortlisted candidates will be contacted.

EA License No. 01C4394

EA Personnel Reg.No. R1104824 (Samsudeen Mohamed Basith)

This is in partnership with Employment and Employability Institute Pte Ltd (“e2i”). e2i is the empowering network for workers and employers seeking employment and employability solutions. e2i serves as a bridge between workers and employers, connecting with workers to offer job security through job-matching, career guidance and skills upgrading services, and partnering employers to address their manpower needs through recruitment, training and job redesign solutions. e2i is a tripartite initiative of the National Trades Union Congress set up to support nation-wide manpower and skills upgrading initiatives. By applying for this role, you consent to e2i’s PDPA.

By sending us your personal data and curriculum vitae (CV), you are deemed to consent to PERSOLKELLY Singapore Pte Ltd and its affiliates to collect, use and disclose your personal data for the purposes set out in the Privacy Policy available at You acknowledge that you have read, understood, and agree with the Privacy Policy.

Responsibilities :

• Administrate and manage Linux and Unix servers
• Troubleshoot and maintain Unix/Linux-based applications in the servers.
• Develop, deploy, and support applications on RHEL, JBoss, WebLogic, MQ, and Kafka.
• Write and optimize SQL queries for Oracle/MySQL databases.
• Lead and guide technical teams in deploying, configuring, and optimizing RHEL, JBoss, WebLogic, MQ, and Kafka solutions.
• Drive automation and process improvements to enhance system efficiency and reduce manual intervention.
• Assist in system monitoring, logging, and automation.
• Provide support for infrastructure and middleware-related incidents.
• Collaborate with teams for project delivery and documentation.
• Ensure system security, patching, and compliance.
• Troubleshoot and resolve complex hardware, software, and networking issues.
• Automate tasks using shell scripting or configuration management tools.
• Maintain robust backup and disaster recovery procedures.
• Collaborate with cross-functional teams for deployments and upgrades.
• Document system configurations, procedures, and troubleshooting steps.
• Participate in on-call rotation and provide after-hours support as needed.
• Contribute to IT strategy, architecture, and infrastructure planning.
• Proven ability to lead technical teams and manage complex system deployments

Requirements:

• Bachelor’s degree in computer science, Information Technology, or related field.
• 5+ years of experience in Linux system administration.
• Experience in technical delivery, infrastructure management, and middleware platforms.
• Experience in JBoss, WebLogic, MQ, and Kafka.
• Strong knowledge of Unix shell scripting and SQL (Oracle/MySQL).
• Red Hat Certified Specialist
• VMware configurations and administration.
• Strong stakeholder management and communication skills.
• Strong leadership, analytical, and problem-solving skills.
• Excellent communication and documentation abilities.
• Ability to manage teams and projects effectively.
• Detail-oriented with a proactive approach to system reliability

Responsibilities

• Provide technical support and administration on Windows 2012 / 2016 / 2019 / 2022 Server, Microsoft Active Directory/ADFS/DNS/DHCP, Office 365, Red Hat Linux Servers and AWS (Amazon Web Services) Cloud Environment.
• Installing, configuring, testing and maintaining operating systems, application software and system management tools, including system and file restoration (if required).
• Monitor (and respond to) all system alerts and provide daily technical support in terms of troubleshooting, diagnosing and resolving hardware, software, and other network and system problems.
• Collaborate with the Cyber Security team and perform regular system and security patches on a timely basis.
• Perform ad-hoc root cause analysis and problem resolution.
• Coordinate with the IT Infrastructure and Operations Manager in system capacity planning and management.
• Monitor IT tickets and provide appropriate resolution on a timely basis.
• Ensure and follow standard IT service delivery processes in accordance with IT policies and procedures.
• Assist on the coordination of internal and external IT audit for the IT Infrastructure.
• Assist his/her immediate superior in defining the methods for issue resolution and prevention.
• Perform other duties as assigned.

Requirements

• Diploma/Bachelor degree in Information Technology, Computer Engineering or equivalent
• At least 5 years of relevant working experience in system administration and cloud operations.
• AWS Certified SysOps Administrator, Microsoft Certified System Engineer (MCSE), and Red Hat Certified Engineer (RHCE).
• Strong knowledge on VMWare
• Strong knowledge on Windows Active Directory, ADFS, DNS, DHCP and Office 365.
• Database management experience is preferred.
• ITIL Certification Foundation Level will be an advantage.
• Be ready to be on stan dby and perform system maintenance activities after office-hours, if required.
• 5 days week, East

All Successful candidates can expect a very competitive remuneration package and a comprehensive range of benefits.

Kindly email your resume in a detailed Word/pdf format to

We regret that only shortlisted candidates will be notified

People Profilers Pte Ltd

Tel: 6950 9753

EA Registration Number: R111375

EA licence number 02C4944

EA Personnel: Lee Hui En Ashley

Responsibilities:

• Provide technical support and administration on Windows 2012 / 2016 / 2019 / 2022 Server, Microsoft Active Directory/ADFS/DNS/DHCP, Office 365, Red Hat Linux Servers and AWS (Amazon Web Services) Cloud Environment.
• Design, install, configure and maintain Oracle and MSSQL database systems, including monitoring, tuning and troubleshooting issues.
• Installing, configuring, testing and maintaining operating systems, application software and system management tools, including system and file restoration (if required).
• Monitor (and respond to) all system alerts and provide daily technical support in terms of troubleshooting, diagnosing and resolving hardware, software, and other network and system problems.
• Collaborate with the Cyber Security team and perform regular system and security patches on a timely basis.
• Perform ad-hoc root cause analysis and problem resolution.
• Coordinate with the IT Infrastructure and Operations Manager in system capacity planning and management.
• Monitor IT tickets and provide appropriate resolution on a timely basis.
• Ensure and follow standard IT service delivery processes in accordance with IT policies and procedures.
• Assist on the coordination of internal and external IT audit for the IT Infrastructure.
• Assist his/her immediate superior in defining the methods for issue resolution and prevention.

Requirements:

• Diploma/ Degree in Information Technology, Computer Engineering or equivalent
• At least 5 years of relevant working experience in system administration and cloud operations .
• AWS Certified SysOps Administrator, Microsoft Certified System Engineer (MCSE), and Red Hat Certified Engineer (RHCE).
• Strong knowledge on VMWare.
• Strong knowledge on Windows Active Directory, DNS, DHCP and Office 365.
• Oracle and MSSQL Database management knowledge is required
• Must be independent and proactive.
• Good interpersonal, communication and analytical skills.
• ITIL Certification Foundation Level will be an advantage.
• Be ready to be on standby and perform system maintenance activities after office-hours, if required.
• 5 days week, East
• Job Reference: QVV39Y88

All Successful candidates can expect a very competitive remuneration package and a comprehensive range of benefits.

We regret that only shortlisted candidates will be notified

Role and responsibilities:

• Manage and monitor all installed systems and infrastructure
• Install, configure, test and maintain operating systems, application software and system management tools
• Participate in the design of information and operational support systems
• Liaise with vendors and other IT personnel for problem resolution
• Provide enterprise-wide support to Linux , VMWare and Microsoft Windows environements

Ideal candidate:

• Diploma in Computer Science or related technology disciplines
• Possess initiative, positive attitude and strong passion in operation support
• Good communication skills and able to work independently
• 2+ years of experience with Linux
• Proficient with Linux, virtualization (KVM, VMWare)
• Windows server is a plus