116 Linux Administrator jobs in Singapore

Job Description & Requirements

Technical Requirements –

· Experienced in Redhat, Solaris, AIX in DC and Cloud infrastructure

· Redhat Satellite Management

· Experience on Installation, Administering, Patching, Upgradation of Sun Solaris/RedHat/AIX

· Administration of Puppet & Ansible

· Administration of Docker & Kubernetes

· Administration on Centrify

· Administration of IBM Symphony

· Administration of GPFS

· AWS/Azure – VM deployment and management

· Depth knowledge of UNIX, Linux Server Support, designing, troubleshooting and storage implementation

· Systems running on Solaris, Linux & AIX platforms and OS clustering, partitioning and virtualization (Solaris - Zones, LDOMs, AIX - VIOs and LPARs

· Handle day-to-day Solaris, Linux & AIX operating system installation, migration and break-fix support

· Demonstrable experience in AIX System Administrator and support various flavors of Unix servers along with experience in HA & VCS cluster technologies

· Create and maintain environment for running batch jobs associated with daily batch cycle and batch reporting subsystem

· Scripting knowledge is a must to automate tasks

· In depth knowledge of key AWS services like EC2, S3, ELB, Autoscaling etc

Other Requirements –

· Certifications and hands-on exposure with skillsets in relevant areas

· Must have strong communication skills (Verbal and Written) and the ability to articulate task management, priorities, and issues, participate in customer visits, conference calls, and assisting with defining the scope of services tasks

· Assess customer environment and requirements and design world-class solutions, leveraging best practices and best-of-breed technologies

· Performs system integration tasks

· Investigate and provide the RCA for the incidents

Preferred Qualifications -

· Bachelor's degree in Engineering, Computer Science, Management Information Systems, or related field

· At least Six (6+) years of information technology work experience and experience architecting, implementing, and/or managing virtual infrastructure environments

One or more of the following certifications

· RHCE- RED HAT Certified Engineer

· Solaris Certified Administrator

· Oracle Linux OCA and OCP

· Dockers certified

· AWS System Administrator

· Microsoft Azure or AWS Solution Architect Certified

We are seeking an experienced Linux Systems Engineer to lead the deployment and rollout of Linux-based solutions across enterprise environments. This role is ideal for someone passionate about building systems from the ground up, ensuring they are secure, scalable, and production-ready.

Key Responsibilities:

• Deploy and configure Linux servers across on-premises and virtualized environments.
• Automate installation, configuration, and patching to streamline deployments.
• Test, validate, and optimize systems for performance, stability, and security.
• Support integration with VMware, KVM, and Windows environments.
• Document and standardize deployment processes for repeatability and compliance.
• Collaborate with vendors, project teams, and internal stakeholders to ensure smooth rollouts.

Qualifications and Experience:

• Bachelor's Degree in Information Technology or equivalent.
• Minimum 2 years of experience with Linux deployment and system builds.
• Strong knowledge of Linux installation, configuration, updates, and troubleshooting.
• Hands-on experience with KVM/VMware virtualization.
• Initiative-driven, detail-oriented, with strong communication skills.

About Us

Linux System Administrators

Opencode Systems is a telecommunications solutions provider, dedicated to open systems for All-G and Telco-over-Cloud mobile networks. Our patented and specialized multi-channel converged services core network technology, Network Browser & Studio, is invisible to consumers but underlies many of the mobile services they use. Built on top of that technology, Opencode iSDP is the market leading Super Telecom Application Server (Super TAS) running hundreds of complex network applications while radically reducing time-to-market, operation costs and data center footprint.

Opencode specialized portfolio addresses key network and cloud domains such as Wireless Emergency Alerts and Cell Broadcast, Location Services, Network Orchestration and Exposure, Data and IoT, Messaging, and more.

80+ mobile operators in more than 70 countries worldwide rely 24/7 on Opencode.

The company is looking for highly motivated energetic person for the position of Linux System Administrators (Accоunt Engineers) helping mobile operators to launch and maintain new mobile services based on Opencode technology.

Responsibilities:

• Project Engineering (installation, integration, testing, commissioning, live activation)

• Account Engineering (live support, helpdesk, change requests, customer technical follow-up)

• Operational Support (system monitoring, heath-care, preventive maintenance, training)

• Emergency Support (first level emergency, incident reporting and follow-up, first level support includes requirement to be on-call on a 24 hours / 7 days a week basis as and when required)

• To be at customer site as and when required to provide necessary technical support.

• Ensure MOP and approval prior to implementation.

• Ensure work on-time delivery

• Ensure up-to-date and high quality documentation

• Ensure company/product documentation benefits from specific documentation and customer experience

• Work internally with project and product managers and teams

• To work in internal team's projects of automation installation of customer platforms

• Help build, maintain strong customer relationships through kind and professional communication

• Ensure full Customer satisfaction while preserving the Company reputation

• Identify and escalate sales needs

• Pre-sales Support (upon availability participate in sales tenders, proposals and meetings)

• Ability to grow as the team grows

• Reporting to the Project Manager / Team Lead

Requirements:

• English is a must, second language is an advantage

• 2+ years of Computer and/or Telecom Engineering

• Very good knowledge in Linux System Administration

• Very Good DB and SQL background, MySQL administration and maintenance

• Very Good background in networking and LAN technology

• Very Good core network knowledge and expertize

• Excellent customer service skills, both verbal and written

• Ability to lead the job

• Ability to work in international environment

• Ability to learn new technology and use it

• Ability to work with schedules and deadlines

• Teamwork skills, can-do attitude, must be assertive and approachable

• Specify and improve technical procedures, in a way that customers and company can reuse and benefit

• Specify technology in a way that customers can understand

Advantages:

• Knowledge in Docker, Kubernetes

• Knowledge in Ansible, Puppet, Vagrant

• Knowledge in Geoserver

We offer:

• An attractive remuneration package with a bonus system for performance.

• Dynamic opportunities for professional and personal growth.

• Working in an international environment of qualified professionals.

• The opportunity to work on projects in a market-leading and growing company and participate in the development of world-market innovative services.

If you are interested in this offer, please send your CV (in English).

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

• We require a proactive individual to monitor work queues, ensuring timely resolution of incidents and requests within agreed service level agreements.
• The successful candidate will perform operational tasks to resolve issues efficiently, update tickets with performed tasks, and identify issues prior to or when they occur.
• They will capture all relevant information for immediate resolution, provide second-level support, and communicate with other teams and clients for extended support.
• Additionally, the ideal candidate will execute changes with clear identification of risks and mitigation plans, follow shift handover processes, and escalate tickets as needed.

• Familiarity with Windows technologies such as Domain Services, SQL, and AWS administration is essential.
• SRE-oriented and focused individuals with moderate years of experience handling cross-technology infrastructure are preferred.
• The ideal candidate will have knowledge in ticketing tools, preferably Service Now, and moderate working knowledge of ITIL processes.
• They should also possess a moderate level of experience working with vendors and/or 3rd parties.

The role offers opportunities for growth and development, including the ability to contribute to change management processes, plan and execute approved maintenance activities, and produce trend analysis reports for identifying tasks for automation.

• A team player with excellent communication skills
• An individual who can work across various resolver groups and technology infrastructures
• A problem-solver with the ability to identify and address issues before they impact clients' services

This is an exciting opportunity for a motivated and experienced professional to join our team and make a meaningful contribution to our success.

Please apply through the provided link.

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

Information Technology - Senior Systems Engineer (Virtualization and Windows/Linux Administrator)
The successful candidate will be part of the Hybrid Platform Engineering team.
Key Responsibilities
Extensive experience administering on-premises Linux and/or Windows systems on virtualization platforms, including SAN and storage solutions.
Perform system administration and troubleshooting in accordance with company policies and procedures.
Monitor and optimize system performance to ensure operational efficiency.
Create and maintain documentation and operational processes.
Support audit activities, infrastructure/network security scans, disaster recovery, and security drills.
Research, evaluate, and deploy new technologies to reduce costs and improve operational efficiency.
Deliver automation solutions using Infrastructure-as-Code (IaC) tools such as Ansible, Python, and Terraform to enhance agility.
Provide on-call support according to the roster for troubleshooting and planned maintenance of production systems.
Requirements
Possess a degree in Information Technology or related fields.
Minimum of 5 years of IT experience, including at least 3 years in a similar hands-on role.
Proven experience managing both Unix (Linux and/or AIX) and Windows servers, with expert-level knowledge (certification preferred) in at least one area, covering installation, configuration, security, networking, storage, patching, and hardening.
Experience working in Virtualization environments.
Practical experience administering SAN and related storage technologies.
Proficient in scripting and automation using Python and Ansible for provisioning and managing dynamic infrastructure.
Strong knowledge of infrastructure components including virtualization technologies, storage, networking, internet protocols, operating systems, scripting and monitoring tools, and IT security.
Experience with Agile methodologies, DevOps, CI/CD, and related tools is preferred.
Strong analytical, project management, communication, and interpersonal skills.
Seniority level
Mid-Senior level
Employment type
Full-time
Job function
Information Technology
Industries
Airlines and Aviation
#J-18808-Ljbffr

The successful candidate will be part of the Hybrid Platform Engineering team.
He/She will be responsible for the following:
•Extensive experience administering on-premises Linux and/or Windows systems on virtualization platforms, including SAN and storage solutions.
•Perform system administration and troubleshooting in accordance with company policies and procedures.
•Monitor and optimize system performance to ensure operational efficiency.
•Create and maintain documentation and operational processes.
•Support audit activities, infrastructure/network security scans, disaster recovery, and security drills.
•Research, evaluate, and deploy new technologies to reduce costs and improve operational efficiency.
•Deliver automation solutions using Infrastructure-as-Code (IaC) tools such as Ansible, Python, and Terraform to enhance agility.
•Provide on-call support according to the roster for troubleshooting and planned maintenance of production systems.

Requirements
•Possess a degree in Information Technology or related fields.
•Minimum of 5 years of IT experience, including at least 3 years in a similar hands-on role.
•Proven experience managing both Unix (Linux and/or AIX) and Windows servers, with expert-level knowledge (certification preferred) in at least one area, covering installation, configuration, security, networking, storage, patching, and hardening.
•Experience working in Virtualization environments.
•Practical experience administering SAN and related storage technologies.
• Proficient in scripting and automation using Python and Ansible for provisioning and managing dynamic infrastructure.
•Strong knowledge of infrastructure components including virtualization technologies, storage, networking, internet protocols, operating systems, scripting and monitoring tools, and IT security.
•Experience with Agile methodologies, DevOps, CI/CD, and related tools is preferred.
•Strong analytical, project management, communication, and interpersonal skills.

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