Applications Administrator Resume CO - Hire IT People (2024)

SUMMARY

• Detail oriented independent thinker and provider of superior customer service through professional, comprehensive, and timely communication in accordance with established service level agreements.
• A vital technical resource committed to optimum performance, availability, and serviceability. Highly proficient understanding of design, implementation and sustainment activities Confidential systems.
• Ability to effectively adapt to rapidly changing environments while ensuring maximum uptime of servers and applications in production, development, and test environments. Ability to analyze, diagnose and resolve systems performance problems or outages in a timely manner.
• Ability to develop efficient and effective systems solutions, and solve complex business problems.

TECHNICAL SKILLS

Operating Systems: Redhatlinux,CentOS, Oracle Enterprise Linux, HPUX, AIX, Solaris, Windows 2008/2012.

Hardware: Hewlett - Packard RP series, C7000, Blade Server BL890C i2, Super Dome, EVA 8100/8400, Proliant.IBM Power 570, Power 520, Eserver xSeries X336, HMCSUN/Oracle X-4 Server, Exadata, ZFS Storage Appliance.EMC Clariion, Celerra, SymmetrixCISCO UCS

Virtualization: VMware, Vcenter, Vsphere, ESX, ESXi, Vswitch, Vnic, Oracle Virtual Manager

Networking: DNS, TCP/IP, SSH, FTP, NFS, CIFS, SNMP, NTP, SMTP, DHCP

Storage: SAN/NAS/ZFS, FC Zoning, FC aliasing, RAID 0, 1, 5, fdisk, SATA, SSD, Logical Volume Manager

Software: Oracle Identity Manager, Oracle Virtual Manager, Oracle Enterprise Manager, Oracle DB, Postgres, Brocade, EMC Control Center, EMC Timefinder, Navisphere, HP SMH, HP Systems Insight Manager, Jenkins, BMC Remedy, JIRA, ServiceNow, HPSA, Tomcat, Powershell, Event Viewer, Cisco CIMC, Cisco Network Registrar, SAML

Backup/Restore: Symantec Netbackup, Avamar

Monitoring: Nagios, SiteScope, HP Systems Insight Manager, Splunk, Kibana, Icinga, Tivioli Enterprise Portal, Graphite, Zenoss, HP Omi, Grafana, Prometheus

Ticketing: ServiceNow, BMC Remedy, Jira, Cherwell

PROFESSIONAL EXPERIENCE

Confidential, CO

Applications Administrator

Responsibilities:

• Responsible for the day-to-day operations of the CU Denver Anschutz Medial Complex identity management operations.
• Provide support of existing infrastructure as well as configuration, deployment, analysis, reporting and administration of the University of Colorado Denver | Confidential Oracle Identity management infrastructure and the 4-Campus identity management infrastructure
• Provide services such as Single Sign on (SSO), Federated Authentication, Multi-factor authentication, Use the Security Assertion Markup Language to enable single sign-on to ensure seamless and secure access for campus wide users. Utilized the Postman application to provision SSO instances.
• Analyze, and determine necessary corrective actions for service events, incidents, and problems.
• Experience with enterprise Linux distributions and development with RedHat, Oracle enterprise Linux
• Experience supporting Linux and Windows virtual environments using VMware tools and procedure

Confidential, Greenwood Village CO

Systems Engineer

Responsibilities:

• Network Services Engineering group assigned to the Pre-production team. Primary responsibilities include but are not limited to deployment of updated software within Device Management, Auto Configuration Server, and DTFTP.
• Device Management is a collection of services for provisioning, configuring, managing, and monitoring a variety of HSD, Voice, and Video Devices. Auto Configuration Server or ACS allows for automatic installation and configuration of generic clients from an existing Automated Configuration server. It is also a remote management solution that leverages Broadband forum TR-69 technical specification to manage a Charter provided gateway. DTFTP (Dynamic TFTP Daemon) is the service that provides DOCSIS configuration files to Charter cable modems, eMTA’s, customer premise routers, various RF monitoring devices, and set top gateways. It is a TFTP daemon with integrated DOCSIS and PacketCable configuration file generic logic.
• Worked with the Cisco Network Registrar (CNR) which is a full-featured DNS/DHCP system that provides scalable naming and addressing services for service and enterprise networks. This system provides Domain Name System and Dynamic Host Configuration Protocol administrative functionality which automates and streamlines IP network Services. It is used by cable-based and similar network services providers to create DHCPv4 scopes and DHCPv6 prefixes. Utilized CNR to create IP addresses for CPE testing and validation. Utilized Auto-Configuration server (ACS), which is designed for automatic setup of CPE (Customer Premise equipment) using the protocol described in the standard TR-069 which was defined to enable automated configuration and management of CPE’s. Through the use of ACS it is possible to perform firmware updates, CPE reboot, Factory Resets, and Device lookups on cable modems, ATA’s, MTA’s. Performed analysis and trouble-shooting steps to uncover issues with systems not being able to obtain IP addresses and other configuration issues by checking log files to find out if configuration issues exists and how to rectify them.

Confidential, Thornton, CO

Linux Systems Administrator

Responsibilities:

• Provide exceptional support and technical expertise for Confidential customer environments, including administration and support for operating systems and virtual environments.
• Responsible for providing Tier II level break/fix Incident Management support for escalated customer outages by utilizing experience, skills, and to provide timely restoration of services.
• Assemble and update documentation in the form of incident and change management tickets via ServiceNow. Create change management plans and perform peer review of co-workers change plans.
• Verify validity of alarms and follow resolution and troubleshooting procedures outlined for customer.
• Identify systemic problems and take action to identify issues via root cause analysis and remediation.
• Review system logs and performance reports for developing problems and initiate preventive action.
• Manage and prioritize incidents, enlist help from internal teams and external vendors when necessary.
• Perform change management tasks, including planning, preparation, and execution managed systems.
• Implemented system patches and updates managing upgrades effectively and to user requirements.
• Experience monitoring and managing applications, device availability, network conditions, and system reliability and performance, as well as service and program maintenance and storage subsystems.
• Super-user access of systems including CentOS, Redhat Linux 7, Solaris, and Windows 2008 and 2012.
• Monitored all systems and alarm conditions by utilizing tools such as HPE OMi and Zenoss.
• Maintain virtual environment that include Vmware and Oracle OVM as well and ESX/ESXi systems.

Confidential, CO

Senior Systems Administrator

Responsibilities:

• Performed administrative tasks in support ADT Pulse application which is comprised of a network of RedHat Linux servers in a (Vmware) virtualized environment. Carried out frequent software deployments and upgrades to the Pulse systems in the Test, DR, and Production environments
• The software, developed by iControl offers connected home management solutions that enables the Pulse application to provide customers with the ability to monitor business or residential property via smart phones and tablets.
• Monitored the VM’s to ensure that no problems existed with CPU contention, memory issues, or space concerns. Utilize Graphite metrics to visually assess performance issues with the application of servers.
• Established DRS Anti-Affinity rules in the production and DR environments. This was necessary because certain server types were not allowed to reside together on VMware hosts.
• Monitored systems performance via Tivoli Enterprise Portal; diagnosed issues using Splunk
• Respond to incident tickets that are generated whenever error conditions are seen or thresholds have been exceeded.
• Created bash shell scripts to automate processes and procedures
• Participated in an on-call rotation.

Confidential, Greenwood Village, CO

Advanced Video Engineer

Responsibilities:

• Perform troubleshooting tasks to identify and rectify issues related to availability of Spectrum Guide, Video On Demand (VOD), DVR, and/or channel availability.
• Identify, resolve and escalate as required operational and design issues through data analysis and recommend solutions to make systems more efficient; when necessary engage software vendors to aid in the resolution of issue on software platforms.
• Collaborate directly with other departments within the organization to address issues related to DOCSIS, DSG, Motorola DAC (Digital Access Control), Entitlements, and Channel Lineups.
• Perform detailed problem diagnosis, track and update problems in a trouble ticketing system utilizing Remedy and JIRA ticketing systems.
• Perform Method of Procedure reviews to ensure that the documentation that relates to software installations and updates contains accurate information and tasks that are easily followed.
• Deployed and maintained back-office components including CSM, Stitchers and Scalers. Perform regular updates to Zodiac Audience Measurement System, Active Video, SkyUI, and SGUI software platforms.
• Provide Bash and Python scripts to automate many of the processes and procedures necessary to optimize and streamline day to day operations in a Linux environment.

Confidential, Broomfield, CO

Senior Systems Administrator

Responsibilities:

• Supported and upgraded a para-virtualized cloud infrastructure which is an enhancement of virtualization technology in which a guest OS is recompiled prior to installation inside a virtual machine.
• Ensured the availability of mission critical systems and SaaS which is a software licensing and delivery model in which software is licensed on a subscription basis and is centrally hosted.
• Installed and configured Sun/Oracle compute racks consisting of as many as 32 X4-4 servers, administered ZFS storage appliances, and Cisco Network switches. Additionally, installed and configured Oracle Exadata Database Machines: a combined compute and storage system optimized for running Oracle Database software.
• Created numerous virtual machines utilizing Oracle Virtual Manager - these VM’s were built from templates internal to OVM - both Windows and Linux environment were regularly created and maintained. Oracle's Unbreakable Enterprise Kernel is 100% compatibility with Red Hat Enterprise Linux.
• Supplied technical expertise by planning and defining new system requirements. Managed a multi-platform environment business-critical operations.
• Performed capacity planning, functionality and load testing in a virtualized server environment; maintained patching and hardening processes in conjunction with policies and guidelines.
• Provide on-call and after hours support for production environments on a rotational basis.
• Managed multiple priorities efficiently and effectively within specific timeframes in accordance with agreed upon SLA’s.

Confidential, Denver, CO.

Senior Systems Engineer

Responsibilities:

• Updated and maintained all systems and processes to ensure the environment contained the most up to date versions and releases.
• Managed systems resources to ensure optimal performance, availability, and recoverability.
• Analyzed failures to minimize outages and service interruptions by performing detailed root cause analysis.
• Monitored and tuned systems environments using measuring tools like HP GlancePlus/UX, SiteScope, and Xymon monitor.
• Evaluated issues associated with server hardware, applications software and resolve as required via problem definition and root cause analysis.
• Supported and maintained large-scale UNIX systems (HPUX, AIX, Solaris &LINUX) and SAN/NAS storage utilizing Brocade DCFM and EMC Control Center. Built storage solutions including Volume Group and Logical Volume creation, backup and recovery, and disaster recovery strategies.
• Created Virtual servers in both HPUX and AIX environment utilizing Npar/Vpar and Lpar. Used IBM’s HMC to create or change virtual machines (LPARs), including dynamically altering the hardware assigned to an LPAR (add and remove) without rebooting the operating system running in the LPAR. Used HP Node partition to create Npars - used vparcreate to define virtual partitions within the Npar.
• Install new software releases, systems upgrades, evaluate and install patches and resolve software related problems

Confidential

Sr. Systems Administrator

Responsibilities:

• Maintained the operation of HP, IBM, and Sun hardware to include HPUX, AIX, and Solaris OS.
• Handled systemmigrations/configurations, installation planning, logical volume management, backup/recovery, user definition, printer configuration and performance monitoring.
• Oversaw hardware/software contracts and assets management.
• Delivered technical consulting and support services to the user community.
• Authored system proposals/documentation and performed change management activities.
• Proactively identified and recommended updates to software, hardware, or architecture as necessary and in accordance with company objectives
• Implemented a SAN and NAS infrastructure that was highly efficient and scalable.
• Created authentication and authorization standards for security using secure shell and sudo.

Confidential, Englewood, CO

Senior Systems Administrator

Responsibilities:

• Performed account creation, printer definition, backup/restore, patch analysis, hardware component installation and device configuration
• Administered HP-UX and Solaris operating system and kernel configuration, system security, third party software applications, general scripting and event monitoring
• Created an installation document for all new system configurations, including standards for redundancy or partition areas with secondary/tertiary volumes
• Scripted procedure to synchronize mirrored root volumes, in the event that the primary root device became corrupted or otherwise unavailable
• Proposed additional hardware acquisition and installed secondary network interface cards, reducing the chance of system outages
• Designed and implemented SAN fabric via Brocade switches and HP XP1024 disk storage arrays.
• Recommended acquisition of host bus adapters, eliminating single points of failure by creating dual path (i.e. primary and alternate links) to disk devices in the storage arrays.

Confidential, Denver, CO

Senior Systems Administrator

Responsibilities:

• Oversaw and contributed to the analysis, acquisition, installation, maintenance and upgrade of computer of HP and Sun hardware, HPUX and Solaris operating systems and software utilities
• Developed and reviewed operator and control instructions; trained personnel on system usage.
• Prepared and conducted system tests requiring hardware/software interfacing
• Controlled user access and passwords to preserve security and integrity by implementing an authorization and authentication protocol.
• Maintained knowledge of operating system software trends and directions to further enhance systems performance and efficiency.
• Devised a patching procedure utilizing a series of scripts that determined the currently installed patch level of a given system.
• Significantly reduced time needed to upgrade UNIX operating systems, by assessing vendor Websites, obtaining new, updated patches and creating patch bundles.
• Implemented security standards, including a password management tools to detect changes in configurations or other file modifications.