Senior UNIX/Linux Systems Administrator

EISENHOWER LEONG

San Jose, ***** CA 408-***-**** ********@*****.***

WWW: https://www.linkedin.com/in/ikeleong52b7851/

Summary

I am an experienced UNIX/Linux professional with over 13 years of supporting complex enterprise environments and ensuring systems run smoothly, securely, and efficiently. I take pride in solving problems, improving processes, and helping teams work smarter through automation, data insights, and reliable technical support. My background spans systems administration, business analysis, resource management, and hands-on technical support, allowing me to bridge both

high availability, and contributing positively to every team I'm a part of.

Systems administration for HPE UNIX and Linux Redhat, includes:

-ordering servers

-unpack and rack servers

-ensure PDU redundancy

-connection to site wide network

-install redhat operating system

-shared 24x7 oncall rotation, after calls with 15minute response time

-monitor ticketing system and ownership of tickets

-monitor production memory bottlenecks

-monitor production disk usage and locate sudden high disk usage

-relationships with project teams

-used change control to apply changes for development first, before rolling out to production

-downtimes based on that regions after hours

-PC desktop support

-implemented product testing for storage devices

-implemented rollover from one Oracle version to another working with Oracle team

-Beta testing of operating systems before going to production

Systems administration for Legacy servers running UNIX under HPUX 11i

Enterprise scale data center administration

Skills

Linux Administration

HP-UX administration

Shell scripting

VMware and virtualization

Performance monitoring (Nagios, HP SIM, IRS)

Server configuration and troubleshooting

Resource management and capacity planning

Troubleshooting of PCBs to component level

Oracle environment support

Data analysis and reporting

Incident and ticket management

System security and compliance

KVM virtualization

Red Hat Linux installation

Automation and process optimization

PCB assembly, mechanical assembly

Experience

BUSINESS ANALYST /DEVOPS ENGINEER 01/2020 - 08/2025

Google - CA

As a Business Analyst / Systems Support professional, I manage resource requests, analyze system performance, and optimize workflows through data-driven insights and automation. I serve as a key technical liaison, ensuring accurate resource allocation, and reliable system operations.

Validated and fulfilled resource requests, improving accuracy, and reducing ticket resolution delays.

Enhanced dashboards and automated workflows increase data fidelity and system visibility for leadership.

Served as the primary contact for server-related inquiries, accelerating response times and issue clarity.

Triaged resource requests and submitted clear feasibility reports, strengthening managerial decision-making.

Collaborated with cross-functional teams to deliver projects

SENIOR UNIX/LINUX SYSTEMS ADMINISTRATOR 05/2006 - 12/2019

Sanmina SCI Corp - CA

As a Senior UNIX/Linux Systems Administrator, I managed enterprise-level HPE HP-UX and Linux environments, ensuring system reliability through proactive monitoring, troubleshooting, and VM configuration across critical operations.

Administered HP-UX and Linux servers, ensuring high availability for financial and production operations.

Delivered 24/7 on-call support, reducing downtime during critical month-end processing.

Collaborated with DBAs, both locally and overseas, to maintain stable Oracle operations and server performance.

Configured and troubleshot VM environments, improving system reliability across multiple departments.

Worked on Legacy and Itanium HPUX servers

Configured LVM, RAID, redundant PDU

Installations and administration of Redhat

Performed cron scheduling, and nagios

Shell scripting, maintaining perl scripts

Supported DevOps environment

Supported MRP environment

System administration of RHEL production servers using Oracle

System administration of RHEL dev systems, setup as VM

Performance, disk, memory monitoring

Using change control, scheduled downtime for patches, firmware upgrades

Managed daily relationships with different teams/projects to meet deliverables

Racking 1U and above Proliant servers, connecting to power,fiber,disks

SUPPORT ENGINEER 06/1975 - 01/2006

Hewlett Packard - CA

As a Support Engineer, I delivered HP-UX and Linux support across complex lab environments, ensuring system stability through installations, troubleshooting, and adherence to security standards.

Assessed user requirements and delivered accurate hardware system recommendations to support operational needs.

Trained new engineers on HP-UX/Linux tasks, accelerating team readiness and performance.

Identified system specifications, and managed setup and installation to support seamless delivery.

Delivered on-site and remote HP-UX support, resolving customer issues efficiently.

HPUX support on Legacy platform

LVM configurations

PCB loading, working wave solder machine

Setup Trade shows: coordination with site providers for networks,power,room setups

Mechanical assembly using drawings

Training of trade school graduates for mechanical assembly

Education

De Anza College - Cupertino, Calif, USA Associate of Arts

General Studies

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