159 Linux Administrator jobs in Singapore

We are seeking an experienced Linux System Administrator to join our team. The ideal candidate will have a strong background in Linux system administration and be able to manage and maintain RHEL systems across development, testing, and production environments.

• Manage and maintain RHEL systems across development, testing, and production environments
• Design, implement, and support OpenShift container platforms
• Administer and troubleshoot JBoss application servers
• Utilise Red Hat Satellite for system provisioning, patching, and configuration management

The ideal candidate should possess the following skills:

• Advanced knowledge of RHEL system administration and troubleshooting
• Experience with containerisation technologies (Docker, Kubernetes)
• Proficiency in shell scripting (Bash) and at least one programming language (e.g., Python)
• Strong understanding of networking concepts and protocols

The ideal candidate should also possess the following preferred skills:

• Red Hat certifications (RHCSA, RHCE, or higher)
• Experience with cloud platforms (AWS, Azure, or GCP)
• Knowledge of CI/CD pipelines and DevOps practices

This is a full-time position that requires the ability to work independently and as part of a team. The successful candidate will be responsible for managing and maintaining RHEL systems, designing and implementing OpenShift container platforms, and administering JBoss application servers.

Job Summary:

One of our esteemed clients is seeking an experienced Linux System Administrator with a strong background in banking or financial institutions, The ideal candidate will have 5-8 years of experience in building and managing servers, both physical and virtual, and possess expertise in Linux and middleware platforms.

Key Responsibilities:

• Build and manage compute and database servers.
• Strong knowledge of server build and management.
• Collaborate with application teams to resolve server build issues.
• Independently manage tasks without relying on documentation.
• Validate that servers are built according to requirements.
• Validate VA ports opening.
• Perform JIRA sanity checks (ODIF, Server Count, Tech/Business Live date).
• Generate reports for Ops and Security for QA validation.
• Address vulnerabilities identified in Ops and Security reports.
• Provide support for 24x7 team operations or 9-hour shifts with on-call support.

Qualifications:

• 5-8 years of experience in building servers (physical and virtual).
• Expertise in Linux and middleware platforms (JBOSS, Weblogic, MQ series).
• Proven ability to work independently without documentation.
• Nice to have: DevOps experience and working with/executing pipelines.
• Linux certification is a plus.

Skills:

• Strong knowledge of server build and management.
• Excellent problem-solving and troubleshooting skills.
• Ability to work collaboratively with application teams.
• Strong communication and documentation skills.

Preferred Experience:

• Experience in banking or financial institutions.
• DevOps experience and familiarity with pipelines.
• Linux certification.

Linux System Administrator

Red Hat Enterprise Linux

Red Hat Enterprise Linux

Your role will include supporting and maintaining Linux platforms across Asia-Pacific, acting as the escalation point for incidents and guiding deployment of new services.

• 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
• Level 3 certified ontology: RHCSA minimum; RHCE preferred

As a Firewall Security Specialist, you will be responsible for maintaining firewalls to ensure proper security controls are in place. Your daily tasks will include providing operational support for networks to ensure services are delivered to internal, hosted, and managed service customers. It is essential to implement and maintain information security components in accordance with established procedures.Your role requires a customer-service-oriented mindset, and you must demonstrate tact when interacting with customers. A solid understanding of standard information security principles such as confidentiality, integrity, authentication, privacy, and security administration is crucial for success in this position. Additionally, knowledge of AWS, Digital Ocean, Cloud Server, Gmail Configuration, and Azure will be advantageous.The ideal candidate for this role will have 0.6 to 2 years of experience in firewall security. This full-time position is based in Sodala, Jaipur, with 5.5 working days per week. Health insurance benefits are provided, and the working schedule is during the day shift.Candidates should be willing to commute or relocate to Jaipur, Rajasthan. Reliable transportation or plans to relocate before starting work are preferred for this position.,

• Job Tags cyber security, it network, firewall, networks, information security

Sign-in & Get noticed by top recruiters and get hired fast

• Job Tags cyber security, it network, firewall, networks, information security

Sign-in & Get noticed by top recruiters and get hired fast

We are seeking an experienced System Administrator to join our team. As a key member of our technical staff, you will be responsible for the day-to-day management and maintenance of our servers and systems.

Roles and Responsibilities:

• Maintain UNIX/Linux Operating Systems
• Install operating systems for new servers
• Perform daily server maintenance and troubleshooting
• Retrofitting or testing feedback for tools and platforms
• Submit and track the part RMA process

Requirements:

• Bachelor's Degree in Computer Science or relevant field
• Knowledge of interdependencies of server functions and technologies
• Understanding of Shell/Bash scripts
• Work experience with Linux systems
• Basic network knowledge concepts - MAC, Subnet, TCP/IP

Skills:
Manufacturing Operations Management, Microsoft PowerPoint, Mac, Factory, Troubleshooting, Hardware, Ticketing, IDS, Arranging, System Testing, Industrial Engineering, System Design, Operating Systems, Electrical Engineering, Linux

We are seeking a highly skilled and experienced IT professional to fill the role of Linux Server Administrator. In this position, you will have the opportunity to work on a wide range of exciting projects involving HPC cluster management, network infrastructure engineering, and high-speed network experience.

• Proficient in multiple infrastructure technologies

• Ability to articulate to more experienced management a technical strategy in clear, concise, understandable terms

• At least 6+ years of RedHat Enterprise Linux (RHEL) administration / engineering experience with strong troubleshooting skills

• Experience in Infrastructure builds, Datacenter migration and project support

• Knowledge on Veritas/RHEL cluster, Block and object storage, Networking

• Understanding of Virtualization technologies

• Experience with Capacity management, Resiliency and Business Continuity Planning and execution

• Experience with Infrastructure automation – Puppet, Ansible

• Experience working on multiple service improvement programs and able to prioritize work loads

• Knowledge of DevOps, Work experience in SRE roles preferred

• Knowledge of cybersecurity and system security best practices

• Experience with multi-tiered application architecture

• Strong verbal and written communication skills

• Self-motivated team player, with strong organizational and time management skills