Senior Linux Systems Administrator – Azure/AWS

About Us

GECO Philippines, part of the GECO Asia Group of Companies, is a specialist IT Consulting Services company with headquarters in Singapore and two delivery centers in the Philippines. 💼 We’re Hiring: Senior Linux Systems Administrator – Azure/AWS We are looking for a Senior Linux System Administrator to provide technical leadership in managing, securing, and continuously improving enterprise Linux environments across on-premises, virtualized, and cloud platforms .

The role will handle complex infrastructure incidents, platform lifecycle activities, automation, security hardening, performance optimization, and major changes across a globally distributed IT environment. 🏢 Deployment Setup 🔁 Work Arrangement: Hybrid (3 days onsite / 2 days remote) ⚙️ Key Responsibilities Lead the administration, hardening, monitoring, maintenance, and lifecycle management of enterprise Linux platforms.

Manage and troubleshoot Red Hat, SUSE, Ubuntu, Rocky, Alma. Linux , and other Linux distributions. Lead resolution of complex incidents, root-cause analysis, service restoration, and preventive actions. Plan and execute OS patching, upgrades, vulnerability remediation, configuration changes, backup validation, and disaster recovery activities.

Develop automation and configuration-management solutions using Ansible, Bash, Python , and related tools. Perform system performance analysis, capacity planning, kernel tuning, storage management, and troubleshooting. Manage Linux services including NFS, CIFS, FTP, syslog, SNMP , and other enterprise services. Support Linux environments across VMware, KVM, Nutanix , physical servers, and cloud infrastructure.

Work with Azure and AWS cloud infrastructure, including compute, networking, storage, identity, monitoring, and disaster recovery. Collaborate with Cloud, Network, Security, Database, Application, Service Delivery, and vendor teams. Maintain technical standards, documentation, procedures, knowledge articles, and project-to-BAU transition documentation.

Provide technical guidance, mentoring, and functional supervision to OS administration teams. Participate in shifting schedules, on-call rotations, after-hours support, and planned maintenance . 💡 Technical Competencies Linux: Red Hat Enterprise Linux, SUSE, Ubuntu, Rocky, Alma. Linux Cloud: Microsoft Azure, AWS, Oracle Cloud Infrastructure (OCI) Virtualization: VMware, KVM, Nutanix Storage: Net.

App, Pure Storage, Azure Storage, AWS Storage Backup: Veeam, Commvault, Azure/AWS Backup DR: Zerto, Azure Site Recovery Security: Cortex XDR Monitoring: Nagios, BMC/MOMA Directory Services: Active Directory, LDAP Infrastructure: Dell, Cisco UCS, Oracle Exadata/Exalogic 🎓 Qualifications 8+ years of infrastructure experience , with at least 7 years of hands-on Linux administration experience .

Strong expertise in enterprise Linux installation, configuration, patching, troubleshooting, performance tuning, security hardening, recovery, and lifecycle management. Strong knowledge of: Red Hat Enterprise Linux and other major Linux distributions Bash, AWK, SED, and basic Perl scripting Ansible and automation LVM and SAN storage using dm-multipath Linux networking and system services User, access, and security management OS hardening and vulnerability remediation Experience with Azure and/or AWS cloud infrastructure.

Experience with VMware and/or KVM virtualization. Knowledge of enterprise storage, backup, and disaster recovery solutions. Familiarity with Active Directory, LDAP, monitoring, and ITIL processes . Strong troubleshooting, analytical, documentation, and stakeholder-management skills. 🤝 Preferred Qualifications Red Hat Enterprise Linux Automation with Ansible (RH294) training/certification.

Red Hat Satellite 6 Administration (RH403) training/certification. Microsoft AZ-104 and/or AZ-305 training/certification. Relevant Linux, Cloud, Automation, Security, or IT Service Management certifications. 🚀 Ready to make an impact? Be part of a team that delivers world-class IT support, empowers users, and keeps business operations running smoothly.

📩 Apply now and help us provide seamless, reliable, and customer-focused service!