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Linux Engineer Resume

OBJECTIVE:

Seeking a position that maximizes my extensive technical background in engineering and architecture, excelling in Linux and VMware.

SUMMARY:

  • 17 years of Linux experience
  • 14 years of VMware experience
  • 22 years of Systems and Data Center experience
  • 3 years of Management experience

WORK EXPERIENCE:

Confidential

Linux Engineer

Responsibilities:

  • Responsible for providing technical leadership in areas of day - to-day operations and project implementation.
  • Standardized BackupExec backup process and setup scheduling formula for Linux based backups.
  • Managed remediation process for all Linux servers to ensure they had the proper version of BackupExec and that all systems were being backed up as appropriate.
  • Worked to standardize tape rotation process with other Engineers.
  • Performed numerous Virtual to Virtual moves from ESXi to Nutanix with minimal downtime.
  • Setup a Windows machine for VMware converter to do Physical to Virtual moves for legacy clients.
  • Streamlined the decommissioning process of unutilized virtual and physical resources and removed a dozen plus servers that were no longer in service.
  • Worked with other engineers for streamline systems patching with less impact.
  • Resolved upgrade and migration path issues with GitLab instance that had improperly been upgraded.
  • Integrated LDAP into Windows Active Directory for authenticating user and group permissions with GitLab and the ability to manager group permissions.

Confidential

Senior Systems Engineer

Responsibilities:

  • Responsible for providing technical leadership in areas of day - to-day operations and project implementation.
  • Led project to tag and analyze AWS resources across multiple accounts and regions to ensure compliance to corporate standards.
  • Took AWS Technical Essentials training class.
  • Performed cost analysis of assets to save over $200k/month in underutilized or improperly sized resources.
  • Created network/system diagrams for clients using basic concepts in LucidChart that allowed non-technical clients to better understand platform configuration.
  • Performed Disaster Recovery testing to ensure customer compliancy and performed process validation.
  • Created standardized change management documentation for repeatable tasks, speeding up routine tasks and maintenance.

Confidential

System Administrator

Responsibilities:

  • Onsite operational support for clients video processing infrastructure.
  • Increased processing capacity of 400+ video grid servers from 75% to 98%, decreasing turnaround time from days to hours.
  • Configure d and deployed three tier architecture of Nginx, Apache, Tomcat and Postgres servers in HA configurations.
  • Implemented distributed wireless mesh networks.
  • Assisted development with technical architecture and design discussions as a systems and network expert.
  • Involved with hardware and system capacity planning for expansion of KVM virtualization environment.
  • Created a distributed Nagios monitoring environment based on logical business units for better performance and response times.
  • Troubleshot and maintained multiple versions of Puppet in three different environments covering over 600 clients while fine tuning cobbler imaging.
  • Migrated and upgraded production Jenkins instance to current revision for WAR regression testing.
  • Performed office data center move covering 200 servers, 400 grids and over 1.5pb of data.
  • Orchestrated cabling of home office move and data center expansion.

Confidential

Sr. Systems Engineer

Responsibilities:

  • Performed a physical data center migration from one location to another at remote colocation on one-week notice.
  • Performance tuned MySQL, Apache and OS level resources in legacy environment.
  • Significantly reduced downtime based on performance tuning and implementing change control methodologies.
  • Assisted on build out of new data center including systems, storage and networking equipment and performed rack/stack and all cabling.
  • Designed and built a web architecture on Debian Linux with Nginx/Apache in a multi-tiered LAMP configuration.
  • Designed a multi-system Galera MySQL Cluster running on Debian Linux with load balanced front end in separated development and production environments.
  • Architected and implemented a classic DEV/TST/STG/PRD environment model for all clients following deployment process.
  • Built multiple High Availability NFS cluster environments with DRBD and keepalived.
  • Implemented a multi-factor backup process for Galera using a customized automysqlbackup and xtradb backups.
  • Implemented complex DNS environment using Bind and Unbound with F5 Load Balancers.
  • Created baseline server configuration (OS/Patches) to keep all Linux servers current.
  • Implemented CVS repository for system and application configurations.
  • Implemented NAGIOS monitoring agent performance tuning and tracking metrics.
  • Designed offsite backups procedure for content and databases on AWS with best practices methodologies for database backups to local and external resources.
  • Took over production pushes from DEVOPS previously outsourced. Installed sanity checks and initial change management system.
  • Created automation scripts for code pushes and system updates based on service groups and application environments.
  • Standardized build and release process for code deployments locally as well with remote hosting services.

Confidential

Lead Systems Engineer

Responsibilities:

  • Lead Systems Engineer in charge of 24/7 operations and support for corporate data center.
  • Performed three complex data center migrations with five 9's availability.
  • Created and designed cage layouts and power/connectivity requirements prior to two moves.
  • Handled scheduling and migration times/dates for customer facing sites.
  • Installed a large portion of the networking cables from switch to server and documented the process as a baseline for other colleagues.
  • Currently central point of contact for all data center activities, installations, changes and alerts.
  • Designed internal timelines for migrations and ran weekly update meetings to ensure all tasks and responsibilities were achieved.
  • Worked hands on to physically move servers, networking gear, storage and UCS blade chassis.
  • Designed and implemented 3-tier architecture migration for Java/Tomcat as well as Ruby on Rails from 32bit CentOS Linux to 64bit Debian Linux.
  • Performed similar implementation and migration with Windows 2003/2008.
  • Consolidated virtualization to a standard & uniform platform (VMware ESX).
  • Performed day to day operations to manage performance and load on vCenter complex.
  • Performed complex P2V’s using VMware converter to decommission over 175 physical servers.
  • Implemented SSL certificate management on F5 load balancers.
  • Designed and implemented complex DNS environment with split horizons.
  • Mail server relay setup and configuration, monitoring and performance tuning.
  • Implementation of Wiki documentation server that is being used between systems and networking.
  • Nagios monitoring agent performance tuning and tracking metrics.
  • Implemented CVS repository for system and application configurations.
  • Setup basic IT ticket tracking system for changes and issues with the focus on change management.
  • Created automated scripts for code pushes and change updates.
  • Worked with BigIP F5 load balancers and handled low to moderate level changes.

Confidential

Sr. Systems Administrator

Responsibilities:

  • Hardware Load Balanced (via Foundry Server Iron & Cisco Pix 515e) web servers running Apache 1.3.x, Apache 2.x and Microsoft IIS.
  • Extensive experience implementing SSL software and SSL Certificates within Apache.
  • MySQL database server installation, support and optimization in a master/slave configuration.
  • Extensive utilization of Cisco PIX 515 series to support enterprise applications.
  • Designed DEV and QA environments utilizing VMware server 2.0 acceptance testing.
  • Upgraded VMware environment to ESXi 3.5 for standardization of tool sets.
  • Created and managed Postfix Mail server utilizing extensive anti-spam blacklisting, greylisting and virus protection integrated into existing mail services.
  • Setup and managed DNS in master and slave configurations utilizing Bind9.
  • Intrusion Detection Systems utilizing Snort, Acid and Snortcenter.
  • Created and implemented network monitoring and network operations consoles utilizing Cacti as well as Nagios.
  • Managed user account creation and system maintenance (patches, upgrades) for complex network segmented Linux setup.
  • Working knowledge of various Cisco networking equipment including Pix 515e and 1841 Routers.
  • Implemented caching proxy server to ensure proper bandwidth management.
  • Designed and implemented corporate change management policies and best practices.
  • Had three employee direct reports that provided help desk and application level support.

Lead Systems Administrator

Confidential

Responsibilities:

  • Managed business relationships with outside groups to provide a single point of contact into Operations.
  • Change request review and approval.
  • Performance reviews and appraisals as well as monthly 1 on 1 session with each team members.
  • Made improvements in the applications environment and created process improvements, which allow Operations to work more closely with the outside organizations.
  • Implemented compliancy of Security Standards and Policies.
  • Implementation of large and complex domain trusts system for three-tier architecture on Windows NT 4.0.
  • Built and managed 3-tier web/app/database infrastructure to support corporate application suites.
  • Application and infrastructure design reviews prior to implementation.
  • Implementation of Nagios (NetSaint at the time) monitoring system for additional support to Distributed Operations group.
  • Extensive systems and application troubleshooting for internal and external customers.

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