Senior Linux System Administrator
Resume:
Francis Yakin
Sr. Linux System Administrator
Hayward, CA 94544
*********@*****.***
Over 20+ years of enterprise level systems administration/engineering experience in design, architecture, implementation and post production support in a geographically distributed data center environment. Working with Technical teams in different groups, install config, help DBA's with production install, upgrade, maintenance, tune and synchronizing various production servers suchas Provisioning/Jumpstart Unix and Linux servers, Build/configuring Cluster server, Proficient with High Computing Performance Computing servers, Java Application server Tomcat/WebLogic/Jboss, Apache, OpenSSL. Strong Hands on Virtualization with VMWARE( vCenter, vSphere ESX/ESXi ), KVM. Excellent hands on knowledge with Redhat Cluster(Pacemaker). Hands on deep knowledge with Redhat Satellite for OS patching. Proficient in Linux RedHat/CentOS, Ubuntu, Debian and Unix(Solaris), Shell and Perl scripting. Certified RHCSA, RHCE. Strong knowledge on Raid, Logical Volume Manager( manage, extend, reduce filesystems) Strong working experience with Apache(virtual hosts) and Java Applications ( Jboss, Tomcat, WebLogic ). Strong knowledge of DNS, NFS, TCP/IP, Postfix/SMTP, SSH, Splunk, OSSEC and Virtual Hosting on Apache webserver as well as Apache with SSL. Proficient in SAN EMC CX3-40, CX4-80 and VNX 5300 series from EMC, Data domain, Network Appliance F900 and Brocade Switch (Silkworm). Solid understanding of Unix Security Hands on PCI/SOX compliance validation systems. Strong knowledge with configuration management Ansible Automation Platform, PXE boot Kickstart, RedHat satellite server to centralize the software packages (RedHat, CentOS repositories). Strong knowledge with backup solutions (Legato/Networker and NetBackup).
Authorized to work in the US for any employer
Work Experience
Sr. Linux System Administrator – Full Time
Simpson Strong-tie MFG – Pleasanton, CA
March 2023 to November 2024
Major Responsibilities: Systems Administration for Linux (Redhat, SUSE and Centos).
Build and configure from scratch management server - Ansible Automation Platform to manage Linux Servers, from patching to install any software,
and manage Applications (SAP) and Database (SAP/HANA)
Build and manage Redhat Satellite to manage repositories and add All Redhat server for OS patching and install any packages, including create a Content Views, Activation code, and Life Cycle Environment for each application.
Manage/add and sync All Linux server(Redhat and SUSE) into Active Directory for single sign on access.
Working knowledge with Vcenter/VMware to build VM servers and create a template and snapshot. Support SAP/HANA DB and configure/manage ASM disks and Logical Volume Manager.
Follow company guidelines (Change Control Management) for any change of the servers, either physically or software/applications. Day to day tasks and work on the tickets for any issue with servers.
Help and assist Developer to resolve from minor to complex problem,
Build and configure SFTP servers for the company to download and upload any important data and files to our customers. All of those tasks add into cronjob.
Generate a weekly report to management and update for any issue. On-Call rotation with another team member.
Sr.Linux Engineer – Part Time/Contract
Xmotors ai – Santa Clara, CA
April 2022 to Feb 2023
Primary responsibilities and responsibilities: As Linux Engineer support all aspect of Linux servers ranging from RHEL 6, 7, 8 and Ubuntu,Debian and CentOS, build and configure physical and Virtual servers(VMware).My first project is build GitLAB, Jenkins, and Artifactory servers . Configure network bonding on GitLAB production server to achivice double network speed.
Second project,Build and configure Backup using Synology Storage. Install and configure PXE boot server for Ubuntu, CentOS. Configure VNC/Remote Desktop on Linux servers
Migrate/upgrade Xtrack server from Ubuntu 16.04 to Ubuntu 20.04 ( inventory tool for IT to keep track company assets. Servers, Switches, Routers)
Day to day - Help end users to trouble shoot the java applications, and in-house applications.
Oncall 24 hours – 7 days for any critical production issue
Sr. Linux Engineer - Full Time
Stanford Children’s Health Lucile Packard Children’s Hospital Stanford - Palo Alto, CA
February 2019 to March 2022
Primary responsibilities and responsibilities: As Linux Engineer support all aspect of Linux servers ranging from RHEL 6, 7, 8 and Ubuntu,Debian and CentOS, build and configure physical and Virtual servers(VMware).My first project is build and configured RedHat Pacemaker to support and make sure the application up and operating 24/7.
Provides technology that enables customers first.This integrates the business of healthcare by providing interoperability solutions to meet healthcare organization's clinical, financial and administrative challenges. Second big project is build from manage/trouble shoot complex problem of Redhat Satellite server for OS patching, generate a report and update to management in timely manner including create a Content Views, LCE for each applications. Support Oracle Cluster and configure/manage ASM disks and Logical Volume Follow company guideline(Change Control Management) for any change of the servers, either physically or software/applications. Day to day tasks and work on the tickets for any issue with servers. Generate a weekly report to management and update for any issue. On-Call rotation with other team member.
Sr. Linux/Unix System Administrator - Contract Wind River - Alameda, CA
September 2017 to January 2019
Major Responsibilities: Systems Administration for UNIX/Linux (CentOS, Ubuntu, Solaris), Storage Administration of EMC and NetApp Storage environment. Maintain DNS, NIS, NFS, SAMBA, Security and performance monitoring Assist in writing project proposals, acting as a vendor liaison, and making presentations to management as required. Project Management on IT infrastructure projects. Light programming in a scripting language (Perl or Shell).Take part in on-call rotation. Maintaining EMC & NetApp Storage. Manage a large-scale, multi-platform (Linux/Unix environment (500+ machines in multiple sites). Manage NetBackup or other backup technology. Assist DBA to install and configure DB servers running Oracle Linux, provide ASM storage and NAS filesystem to the servers. Build and configure Patch management server (Spacewalk - open source) to Patch hundreds Linux/Unix systems in regular basis to meet company standards and ISO standard. Manage F5 for load balancer.
DevOps System Monitoring Architect - Contract Qualys Inc - Redwood City, CA
September 2015 to August 2017
Architect, manage, and maintain monitoring servers and applications using Solar winds enterprise, and Nagios. Work closely with Operations Teams (DBA, Service Delivery, Network, IT) to resolve technical issues. Build, manage, install and configure Applications Performance Tools such as AppDynamics (SaaS controller as well as on-premises). Manage integrated Unit Test and Code Analysis Tools. Build and manage repositories including source code, RPM. Deploy, manage, and upgrade System, services and containers using automated configuration (puppet). Manage; configure AWS (VPC, EC2, S3, and Cloud Watch). Ensure Uptime SLA for All Essential DevOps Infrastructure as part of the Global DevOps team. Produce weekly, monthly and quarterly uptime and status report for Production Systems and Applications and critical internal infrastructure. Monitor and alert based on System Metrics, analysis of logfiles and Custom Alert Rules.
Sr. Linux System Administrator Merchant e-Solutions - Redwood City, CA
July 2013 to August 2015
As Linux/UNIX System Administrator, maintaining and build three tiers architecture of E-commerce/ Financial Applications and Infrastructures Server. Consisting web servers in Load balancer, Tomcat/Resin java applications and Oracle 11G on the backend, and manage EMC Storage (SAN) and Data Domain for Oracle Data. Manage Puppet server, create and configure puppet modules for Applications. Key person in IT, install and configure security tools and hardening the system to meet the PCI compliance. Configure and maintaining Splunk server for centralizes logging. Build automation Kickstart/PXE server and build Puppet modules to install and manage software packages installation and configuration across hundreds Linux servers. Manage; configure Applications running on Amazon Web Services. Work closely with Developers to ensure new software working and deploy successfully from Test, Staging and Production Environment, and trouble shoot as necessary. Build Nagios monitoring Server for monitoring Server's availability and Application 24x7, send alerts and escalation. Build and configure front end www.merchant-solutions.com with LAMP stacks consisting Linux, Apache, MySQL and PHP with SSL, install/configure backend Tomcat Clusters. Build Subversion, Bamboo server for code deployment, build and configure DNS Master/Slave servers, Postfix/SMTP and Jira ticketing system. Migrate Legacy Solaris servers with new HP machine running Linux/RedHat Enterprise. Deploy new HTML/XML/Images and static page to front end apache web servers and java code/war file to Tomcat cluster server using automation tools (bamboo). Migrate Physical Production Linux Servers to Virtual Machine (VMware), build VMware/vCenter hosts and virtual machines, and configure vSphere ESXi from scratch.
Sr. UNIX System Engineer - Consultant Kaiser Permanente/Division of Research - Oakland, CA
May 2012 to July 2013
Architect/Design and implement SAS (Statistical Analysis Software) servers consisting Linux (RedHat) and Solaris Containers. Administer and build Storage requirement (EMC Clarion) and NAS (Celera) for Database and applications. Build and configure LAMP stack for Kaiser Division of Research. Manage HPC Computing servers for Kaiser Division of research. Design/build and configure Nagios for monitoring Servers (Linux, Solaris and Windows), applications (Jboss and Tomcat) and Databases (Oracle, MySQL, and Berkeley DB). Build and configure and maintain Subversion (Version Control) for developers. Build automation kickstart/PXE server for provisioning Linux and UNIX servers. Install/build from ground up Syslog server for managing and collecting the system and application logs. Implement Re-IP projects, Migrating EMC NAS (Celera) to NetApp with Clustering Capabilities. Administer/build VMware hosts and guest for Division of Research infrastructure Servers running SharePoint, Tomcat.
Sr. UNIX Systems Engineer Exelixis Incorporation - South San Francisco, CA
December 2009 to May 2012
Administer Linux/UNIX (CentOS and Solaris) Production Servers hosting Oracle database and Configure and deploy Web Applications (Tomcat) and Apache webserver for in house applications for Research and Scientific Exelixis core product and configure/build/support SAP/ERP Database and Applications. Plan, Configure and Administer Linux/Unix Servers Disaster Recovery site for Redundancy.
Design and configure Solaris 10 containers, Solaris Zoning, ZFS and Dtrace for debug, observe and tune system behavior. Administer Software/apps and hardware contains SUN Hardware (T2000, V490, V890, T5120 and Enterprise M5000) 100 plus servers, configure/provisioning and administer Cisco UCS blades with VMware (VSphere 4.1, vCenter). Total about 200 plus virtual servers consisting Linux Redhat and Centos 5.x. Successfully Migrate VERITAS Volume Manager to ZFS files system on Production Servers. Migrate SAN/ Oracle data from OLD SAN (CX700) to the new SAN (CX960) using rsync and PPME (Power Path Migration Enabler method. Successfully configure Disaster Recovery Server for redundancy to secondary data center. Develop automation scripts for IT downtime for NAS migration and automation script to clean up the data on CX700 and CX380 before returning back to EMC(about 300-400 disks) - reducing the cost. Patch regularly All Linux/Unix Servers with Recommended patches, upgrade power path and VERITAS upgrade to comply with EMC compliance - Required for SAN migration Provide daily routine tickets and close/resolve the tickets in timely manner - this including backup & Restore critical data to the customers. Proactively replace and identify/resolve hardware and software issues on servers (During downtime or off hours and stay on top until the problem resolve). Configure LACP/IPMP trunking and VLAN on all local zones on SUN M5000s for redundancy. Maintain/Administer VERITAS NetBackup, Storage Area Network and NAS (EMC Celera NS480/960), DNS, NIS servers and NIS users/groups, Jumpstart, Kick start. Administer/Configure Systems monitoring with Nagios and Opsview, and Syslog-NG/Splunk server.
Sr. Systems Engineer Liquid Digital Media - Redwood City, CA
January 2008 to December 2009
Administer of application infrastructure (hosting mp3.walmart.com) hardware and software including Web Servers (Apache and Windows IIS), Database (Oracle and MySQL), Application Server (WebLogic, Tomcat), Configure Puppet/Kickstart and Jumpstart for System Provisioning and configuration, configure Perforce/Git revision control management and CVS version control for developers. Total about 400 machines. Administer Solaris 10 containers and deploy/configure VERITAS Volume Manager and EMC Power Path. Implement systems and network solutions and provide 7x24x365, hands-on operational support for high-profile web sites hosted largely on Solaris and RedHat Linux Analysis and troubleshooting of web applications deployed in an N-tier infrastructure. Hands-on implementation, administration and provisioning/upgrades of RedHat Linux/Centos Servers and Solaris servers, LDAP Servers, Mail transport utilities (Send mail), and DNS. Administrator of networking and security infrastructure consisting of routers, switches, and load balancers firewalls, IDS, event correlation tools, etc. Participate in specification, procurement, design, deployment, Capacity planning and upgrades of Hardware, Network, Software. Design and build/configure Linux HA for redundancy using open source tools heartbeat/DRBD. Automation of maintenance, operations and administration processes through integration into third-party tools, monitoring tools (Nagios, Cacti, MRTG) scripting, and implementation automation script for System administrator purpose.
Education
Bachelor in Science
Catholic University of Parahyangan – Bandung, Indonesia
Heald Institute of Technology - Hayward, CA – AAS in Electronic Technology
Certification:
Computer Technology – UC Santa Cruz extension
RHCSA - Redhat
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