Unix Systems Admin, Sr. (Red Hat)

Stefanini, Inc; Pasay; On-site; PHP 900,000 - 1,500,000; Full time

Job summary

Stefanini, Inc. is seeking an experienced UNIX/Linux System Administrator (Senior) to manage, maintain, and support enterprise Linux/UNIX environments in Pasay.

You will handle system administration, troubleshooting, performance optimization, security, patching, automation, and production support. The role involves installing and maintaining RHEL/UNIX servers, managing users and permissions, patching and hardening, monitoring performance, troubleshooting issues, configuring services, supporting

Qualifications

• Bachelor's degree in Computer Science, Information Technology, or a related field, or equivalent experience.
• 3-7 years of experience in UNIX/Linux system administration.
• Strong hands-on experience with Red Hat Enterprise Linux.
• Knowledge of UNIX systems such as AIX, Solaris, or HP-UX is preferred.
• Experience with Shell scripting and Linux command-line tools.
• Working knowledge of TCP/IP, DNS, DHCP, SSH, firewalls, and networking concepts.
• Experience with system monitoring, backup, patching, and configuration management tools.
• Familiarity with ITIL processes, ticketing systems, and change-control procedures.
• Ability to troubleshoot complex production issues independently.

Responsibilities

• Install, configure, administer, and maintain Red Hat Enterprise Linux (RHEL) and UNIX servers.
• Manage user accounts, groups, permissions, sudo access, and authentication services.
• Perform operating system patching, upgrades, hardening, and vulnerability remediation.
• Monitor system performance, capacity, availability, and resource utilization.
• Troubleshoot server, operating system, network, storage, and application-related issues.
• Manage filesystems, LVM, NFS, RAID, multipathing, and disk space utilization.
• Configure and maintain services such as SSH, DNS, NTP, FTP/SFTP, HTTP, and SMTP.
• Support high-availability, clustering, backup, and disaster-recovery environments.
• Automate routine administrative tasks using Shell scripting, Ansible, or Python.
• Review system logs and conduct root-cause analysis for incidents and recurring problems.
• Collaborate with application, database, network, security, and infrastructure teams.
• Participate in change management, incident management, and on-call support activities.Maintain system documentation, operational procedures, and troubleshooting guides.
• Ensure compliance with organizational security standards and regulatory requirements.

Skills

UNIX/Linux administration

Shell scripting

TCP/IP networking

Root-cause analysis

On-call support

Education

Bachelor's degree in Computer Science/IT or related

Tools

Ansible

Git

Python

Terraform

Docker

Kubernetes

OpenShift

VMware

RHCSA/RHCE

Job description

Join us to co-create solutions for a better future!

Job Details

Systems Administration

Unix Systems Admin, Sr. (Red Hat) Pasay, Posted:8/3/2026 Job Description Job ID#: 64504

Job Category: Systems Administration

Position Type: Full Time

Duration: 2 year

Remaining Positions: 2

Details

Job Description: UNIX / Red Hat Linux Administrator

We are seeking an experienced UNIX / Red Hat Linux Administrator to manage, maintain, and support enterprise Linux and UNIX environments. The successful candidate will be responsible for system administration, troubleshooting, performance optimization, security, patching, automation, and production support.

• Install, configure, administer, and maintain Red Hat Enterprise Linux (RHEL) and UNIX servers.
• Manage user accounts, groups, permissions, sudo access, and authentication services.
• Perform operating system patching, upgrades, hardening, and vulnerability remediation.
• Monitor system performance, capacity, availability, and resource utilization.
• Troubleshoot server, operating system, network, storage, and application-related issues.
• Manage filesystems, LVM, NFS, RAID, multipathing, and disk space utilization.
• Configure and maintain services such as SSH, DNS, NTP, FTP/SFTP, HTTP, and SMTP.
• Support high-availability, clustering, backup, and disaster-recovery environments.
• Automate routine administrative tasks using Shell scripting, Ansible, or Python.
• Review system logs and conduct root-cause analysis for incidents and recurring problems.
• Collaborate with application, database, network, security, and infrastructure teams.
• Participate in change management, incident management, and on-call support activities.Maintain system documentation, operational procedures, and troubleshooting guides.
• Ensure compliance with organizational security standards and regulatory requirements.

Job Requirements Details

• Bachelor's degree in Computer Science, Information Technology, or a related field, or equivalent experience.
• 3-7 years of experience in UNIX/Linux system administration.
• Strong hands-on experience with Red Hat Enterprise Linux.
• Knowledge of UNIX systems such as AIX, Solaris, or HP-UX is preferred.
• Experience with Shell scripting and Linux command-line tools.
• Working knowledge of TCP/IP, DNS, DHCP, SSH, firewalls, and networking concepts.
• Experience with system monitoring, backup, patching, and configuration management tools.
• Familiarity with ITIL processes, ticketing systems, and change-control procedures.
• Ability to troubleshoot complex production issues independently.

Preferred Skills

• Red Hat Certified System Administrator (RHCSA) or Red Hat Certified Engineer (RHCE).
• Experience with Ansible, Git, Python, or Terraform.
• Knowledge of cloud platforms such as AWS, Microsoft Azure, or Google Cloud.
• Experience with Docker, Kubernetes, or OpenShift.
• Familiarity with virtualization technologies such as VMware.
• Knowledge of security tools, vulnerability management, and compliance frameworks.
• Experience supporting clustered or highly available environments.

Technical Skills

• Operating Systems: RHEL 7/8/9, CentOS, UNIX, AIX, Solaris
• Scripting: Bash, KornShell, Python

Pay Range

Based on Experience