Christopher Hernandez Email & Phone Number

Burbank, Ca, Us

Orlando, Florida, Us

• In depth knowledge of an Enterprise AWS Cloud computing environment, along with knowledge of Azure and GCP• Provision new applications from scratch in AWS using Terraform scripts, Atlantis, and Nimbus configurations using GIT• Drive Task and Projects from creation to completion to include building environments in Latest, Stage, Load, and Production• Troubleshoot daily issues involving EC2’s, ECS’s, S3 Buckets, ELB/ALB’s, Route 53, EFS, Lambda, & Security Groups• Daily use and in-depth knowledge of RHEL Linux operating system commands and Docker containers, as well as Chef for system configuration• In depth knowledge of Apache HTTP, Akamai Routing, F5 Load Balancers, AppDynamics, and Splunk Monitoring tools• Perform On-Call rotation for 24/7 Production coverage of Disney Parks and Resorts websites and extended infrastructure• Complete work assigned via Service Now Ticketing System, using Incidents, Change Records, and Problem Records• Usage of Jira for tracking project work related to two-week sprint cycles, along with participation in sprint planning and scrum meetings• Troubleshoot, Fix, and Deploy software builds, patching, and configuration changes using Rundeck and Jenkins CI/CD Pipelines• Work in Windows Azure to create, provision, and maintain software applications using both the UI and CLI • Fix problems and manage clusters related to Rabbit MQ, Redis, and Couchbase as well as SSL Certificate renewals and Networking configurations• Mentor, train, and assist peers in daily work projects requiring team collaboration to include Lunch’n Learns and Shadowing• Document all new projects to create application Runbooks that are used by L1/L2 teams to troubleshoot incidents• Consistently recognized as the team’s top performer in the number of Incidents, Changes and Work Requests completed and closed• Proficient in the use Confluence, Git, Chef, RHEL 6/7, Jenkins CI/CD pipelines, Slack, Akamai, Bash, Ruby, Python, HTML, Big IP F5, AWS, Terraform

• Administered Linux servers in a virtual environment to include adding/removing users, granting user permissions/rights• Provisioned new servers using CentOS 6/7 for daily use of new projects for Development and QA use and testing• Managed local private network addresses into BIND DNS to maintain accountability of server ip’s and avoid conflict• Found Root Cause Analysis for downed servers using DEBUG tools in log files and following ERROR messages • Installed third party applications onto Linux servers from scratch with only limited documentation to work with• Created Kerberos principles and keytabs into KDC server to allow for secure Linux environments as needed• Administered TLS/SSL Certificates into Linux servers for secure web connections of network environment• Built and Administered Hadoop clusters in MapR, Cloudera, Hortonworks, Azure HDI, and AWS EMR using CentOS• Wrote documentation and procedures related to the all the various versions and flavors of Hadoop clusters• Worked in AWS cloud environment to create, administer and manage EC2’s, EMR clusters, S3 buckets, and Security Groups• Used of Chef for server configuration management and system configuration changes as needed for project work• Worked closely with Foreign contract employees to make sure the infrastructure needed was up and operational 24/7• Created and managed Virtual Machines through the use of Xen Center with Templates in order to automate work• Attended Sprint meetings and daily Scrums to report and document work and status of impending issues to team members • Worked in Jira, Confluence, Git, Chef, RHEL 6/7, Jenkins, Slack, Xen Center

• Build and Administer LAMP servers and Tomcat servers for Walt Disney World Parks and Resorts Online websites • Complete new project work and maintenance fixes for over 5 different web applications for the WDPRO Business Unit• Daily use of Chef for server configuration management and system configuration changes as needed for project work • Use the Splunk Monitoring tool to manage problems and outages for all servers in our Linux infrastructure inventory• Frequent use of VMware’s virtual environment to deploy and maintain WDPRO’s virtual server Linux environment • Create, make, and maintain configuration in a Big IP F5 network environment for all WDPRO application websites • Perform On-Call duties as part of the Senior Systems Engineer group for web outages to Disney on a rotating basis• Work in Jira, Confluence, Hip Chat, Git, Chef, RHEL 5/6, Jenkins, Rundeck, Bamboo, Slack, Sensu, and AppDynamics

Daily scripting and use of Chef Opscode for server configuration management on Red Hat Enterprise Linux 5/6 servers. Manage and install SSL certificates for company domains and website using DigiCert. Daily use of linux Open LDAP, DNS, and DHCP for user and server authentication and name services. Extended use in VMware vShpere 5 for virtual server provisioning, management, and maintenance. Use of GIT and SVN for software code repository, Zabbix, Splunk, and New Relic for system, server, and website monitoring, and Confluence and Sharepoint for shared documentation. Perform tasks as a Senior Level Linux Administrator resolving everyday problems, outages, configuration changes and server builds as the Higher Tier Support for the company Help Desk and novice administrators.

Setup, Configured, and Maintained User ID information using LDAP as the main method of System Authentication. Performed Installations, Upgrades, and Patching of Red Hat Servers/Workstations using Kickstart and YUM Satellite Server. Used the Remedy Ticket Tracker software application to maintain historical data and track work status of assigned tickets. Relied on solid understanding of UNIX, Red Hat Linux, Solaris, and HP-UX to perform Root Cause Analysis work. Maintained and performed Lifecycle Management Procedures to upgrade current hardware and retire End of Life systems. Knowledgeable of Red Hat Virtualization and VMware ESX and its uses on Physical Hosts to minimize hardware utilization. Used Veritas Enterprise Administrator and Cluster Manager, EMC Avamar Administrator, and Citrix XenApp daily. Ensured High Availability of Production, QA, and Development systems by monitoring Performance and Capacity issues.

Performed System Administrative duties on all Red Hat Linux and Windows OS servers in a secure lab environment. Installed, Setup, Configured, and Tested Red Hat Enterprise Linux and Windows OS servers with NTP, TCP/IP, & UDP. Installed and Tested all Information Assurance patches and new 3rd Party Application software for Verification Approval. Used multiple versions of Cisco Routers and switches using Fiber Optic technologies to maximize network throughput. Wrote Software Test Plans, Test Descriptions, and Test Reports for multiple software releases of System Software. Used Test Track Suite to write Requirements, Functional, and Verification Test Cases to validate all software testing. Wrote Software Problem Reports to sum up deficiencies, errors, and outstanding issues related to the software under test. Tested new hardware equipment, technologies, and software to integrate with the currently deployed G-BOSS equipment. Documented Software and System Configuration procedures for use by Production and Field Service Representatives.

Performed System Administrative duties on all Red Hat Linux and Windows OS servers in a secure lab environment. Installed, Setup, Configured, and Tested Red Hat Enterprise Linux and Windows OS servers with NTP, TCP/IP, & UDP. Installed and Tested all Information Assurance patches and new 3rd Party Application software for Verification Approval. Used multiple versions of Cisco Routers and switches using Fiber Optic technologies to maximize network throughput. Wrote Software Test Plans, Test Descriptions, and Test Reports for multiple software releases of System Software. Used Test Track Suite to write Requirements, Functional, and Verification Test Cases to validate all software testing. Wrote Software Problem Reports to sum up deficiencies, errors, and outstanding issues related to the software under test. Tested new hardware equipment, technologies, and software to integrate with the currently deployed G-BOSS equipment. Documented Software and System Configuration procedures for use by Production and Field Service Representatives.

Arlington, Virginia, Us

Defended America against all enemies, foreign and domestic.

Performed work as the company Unix System Administrator and Software Test Engineer involving Telecom systems running on the Solaris Operating System. Installed OS's, configured company software, and networked all Telecom switches and Signal Control Points to one another for production test and development environments. Troubleshot and identified problems with OS configurations and telecom settings and reported them to the Software Development group. Conducted Load and Performance Testing for company software and hardware products sold to US Telecom Company's.

Arlington, Virginia, Us

Maintained, troubleshot, and repaired Electronic Jammers, Radio Frequency Interceptors, Secure Satellite Communications, Direction Finding equipment, and various computer systems using the UNIX OS.