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JCBrian Refugia

@jcbrianrefugia

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Senior Unix/Linux engineer focused on automation, reliability, and high-availability.

Philippines

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What I'm looking for

I seek senior infrastructure or platform roles where I can lead automation, improve HA/resilience, manage Unix/Linux estates, and mentor teams in a collaborative, process-driven environment.

I am a Senior Unix/Linux engineer with extensive experience designing, deploying, and maintaining enterprise Unix environments across Solaris, AIX, HP-UX and Linux. I specialize in automation (bash, Ansible), high-availability solutions, storage and volume management (LVM, SVM, ZFS, VxVM), virtualization (KVM, VMware), monitoring and disaster recovery — driving operational stability and performance for 24x7 critical platforms.

I have led platform migrations, patching and capacity planning, provided tier-3 support and incident management, and created scripts and processes that reduce manual effort and improve reliability. I hold Red Hat Certified System Administrator (RHCSA) for RHEL 9 and a Bachelor of Science in Electronics and Communications Engineering, and I seek roles where I can improve resilience, automation, and operational excellence.

Experience

Work history, roles, and key accomplishments

Current

Senior Unix Server Engineer

Current

Broadridge Financial Solutions

Dec 2024 - Present (9 months)

Managed and maintained Unix/Linux servers to ensure performance, availability, and security; developed automation and disaster recovery plans and resolved critical incidents to improve operational reliability.

Linux Administration Shell Scripting Nagios Zabbix Datadog NFS DNS System Security

Senior Unix Operation Consultant

Aeven IT Services and IT Consulting

Jun 2022 - Dec 2024 (2 years 6 months)

Deployed and migrated Unix/Linux servers, managed patching and high-availability clusters, and provided Tier 3 support and capacity planning to maintain system stability.

Server Migration Patching SAN NAS Automation)Capacity Planning VMWare

System Specialist

Amdocs Corporation Philippines Inc.

Dec 2018 - Jun 2022 (3 years 6 months)

Supported global production Unix environments, managed incidents and changes, performed capacity planning and root cause analysis, and administered HA, LVM/ZFS/VxVM and patching.

Incident Management VCS Service Guard ZFS Shell Scripting VMWare Capacity Planning

Senior Unix Administrator

HCL Technologies Philippines

Nov 2015 - Dec 2018 (3 years 1 month)

Installed and maintained Linux/Solaris servers, configured HA environments, automated routine tasks with scripts, and managed incident/change processes to meet SLAs.

Linux HA Configuration Shell Scripting Patch Management VMWare Disaster Recovery Incident Management

Senior Unix Administrator

FIS Global Solutions Inc.

Nov 2014 - Nov 2015 (1 year)

Maintained complex Unix infrastructures (Solaris, AIX, HP-UX, Linux), improved monitoring and automation, and delivered high-level diagnostics and technical support to ensure availability.

HP UX Linux Monitoring Automation)

UNIX Server Administrator

Telus International Philippines

Aug 2013 - Nov 2014 (1 year 3 months)

Managed large-scale enterprise Unix server infrastructure in 24x7 environments, performed performance tuning, capacity planning, and cross-team incident resolution to improve availability.

Performance Tuning Capacity Planning HP UX

UNIX System Administrator

Hewlett Packard Philippines

Feb 2011 - Aug 2013 (2 years 6 months)

Provided incident management and technical support for Unix environments, maintained documentation and compliance with ITSM/SLA standards, and supported service availability and escalation processes.

Incident Management ITSM Unix)Documentation Escalation Management SLA Technical Support

Assistant Engineer

Shindengen Philippines

Sep 2009 - Oct 2010 (1 year 1 month)

Performed calibration and preventive maintenance of production testers and equipment, set up new machines, and managed maintenance records and calibration schedules.

Equipment Calibration Equipment Maintenance Scheduling Repair Coordination Reporting

Failure Analysis Engineer

Winstron Infocomm (Philippines)

Feb 2008 - Feb 2009 (1 year)

Troubleshot and analyzed root causes of failures in mobile device mainboards, monitored production line issues, and prepared daily technical reports to inform process improvements.

Root Cause Analysis Technical Reporting