David Gargan Email & Phone Number

Aurora, Co, Us

Denver, Colorado, Us

• Providing leadership to an international team of engineers and administrators across the USA, Stockholm, Prague, Ostrava, and India.• Overseeing all aspects of Information Technology, Information Security, and Service Desk.• Directing data center operations for physical data centers located in US and Europe, as well as geographically diverse public cloud environments, and all international offices.• Driving migration efforts to migrate physical data centers to public cloud with minimum impact for the user community. This dramatically improved the security posture of our SaaS offerings, and also initiated the practice of Site Reliability Engineering with Azure.• Financial management (CapEx/OpEx/budget) for the IT and Security departments.• Member of audit leadership team, ensuring Vendavo successfully achieves SOC 1, SOC 2, ISO 27001, and TISAX certifications in order to meet contractual obligations with our global customers.• Adopted the DevOps model of using • Partnering with Development teams to migrate application services from legacy virtual machines to Docker containers managed by Swarm and Kubernetes.• Managed the M&A activities for all IT components for three corporate acquisitions, which included cloud environments, data centers and offices in the US, Europe, and India.• Deployment of VDI as a technology enabling Vendavo to ensure control of intellectual property when using 3rd party contract development resources.

Denver, Colorado, Us

• Management of the Systems Engineering team as well as the IT Service Desk, managing international data centers and covering the needs of 350+ Vendavo employees around the globe.• Initiated the use of Ansible for automation of data center systems to improve Vendavo’s security posture.• Implementation of strict IT standards while building out an Information Security program for Vendavo.• Consolidated all points of authentication to Microsoft SSO and set requirements for MFA.• Upgraded all Vendavo locations (data centers and offices) to modern PaloAlto firewalls.• Implemented PaloAlto GlobalProtect VPN gateways to ensure all employees had stable VPN access and were connecting using multi-factor authentication.• Engaged with external vendors to perform Vendavo’s first penetration test in preparation for audit.• Member of audit leadership team, ensuring Vendavo was successful at first attempt in getting both SOC & ISO certifications.• Evaluation and eventual management of IaaS provider in Stockholm, as a requirement from M&A activities.• Consolidation of corporate authentication providers, including all-encompassing deployment of SSO for corporate applications and a cloud based password vault for end users

Denver, Co, Us

• Hired, mentored and retained team of highly skilled engineers supporting data center operations including all operating systems, virtualization, compute, storage, and back office applications.• Proposed, planned and implemented migration to all-flash storage arrays at multiple data centers. Migration improved ETL team efficiency by ~ 40%, and reduced database cloning times by 70%.• Delivered corporate SaaS platform, VoIP and VDI between 20+ remote office locations, 3 data centers and remote workforce. Solution delivered improved performance, standardized reporting and provided call analytics.• Worked closely with multiple VARs and fostered relationships with critical partners including Oracle, Microsoft, Cisco and Dell-EMC. Produced platform proposals for technology adoption including Dell converged compute, Citrix virtualization, Riverbed WAN optimization, Splunk log consolidation and reporting, Cisco compute, Pure Storage SAN and EMC Isilon.• Evaluated big data options and implemented Hadoop using Hortonworks HDP. This project used machine learning to evaluate, identify and sort millions of media documents.• Successfully migrated on-site data center to a local Denver co-location facility while maintaining business operations.• Published capacity reports and presented them to Senior Leadership.• Achieved and maintained PCI and SOX compliance across multiple data centers and headquarters.• Evaluated configuration management tools, and deployed Puppet Enterprise across all Linux environments to enforce configurations required for PCI compliance.

Denver, Co, Us

• Managed the migration and expansion of the SquareTwo Disaster Recovery Data Center. Developed the DR Plan and managed DR Exercises. Improved our RTO < 1 hour, RPO <= 15 mins for all critical systems.• Planned for capacity and growth of enterprise storage and compute platforms, ensuring the company had the capacity to grow as needed without interruption or delays. • Mentored team members and team customers, set architectural direction and implemented technologies to support the growth of the business.• Managed the migration of enterprise storage platform to Hitachi Data Systems AMS2500 and HNAS, providing 100% uptime over a 4-year period.• Subject Matter Expert for Oracle Engineered Systems, managed the implementation and ongoing maintenance of Oracle Exadata, Oracle Exalogic, and Oracle ZFS Storage.• Supported all IT aspects of a satellite office build and migration for 50+ call center headcount. All activity was performed after hours to provide zero downtime and zero impact to operations.

Denver, Co, Us

• Designed and implemented new Solaris 10 web farm to support payment portal for 30 franchise partners.• Consolidated SaaS application and Oracle databases to Solaris 10 zones on newer hardware.• Configured Foundry load balancers to increase application availability through redundancy.• Migrated development and test environments off legacy servers to Solaris 10 zones on newer hardware.• Designed custom Jumpstart profiles to allow for a consistent and secure Solaris 10 OS deployment to bare metal as well as Solaris zones.• Designed and implemented an enterprise DNS environment, using split views in Bind to create different DNS views for Internal/Franchise/Internet DNS customers, as well as a hidden master for problem free management.• Migrated Veritas Netbackup environment to newer hardware, utilizing Decru Datafort devices for inline encryption and Quantum VTL devices in place of physical tapes.

Langley, Berkshire, Gb

• Management of Solaris and Linux server farms supporting multiple corporate web portals.• Managed xCAT and SystemImager for consistent Linux OS deployment across several racks of IBM Bladecenters.• Administration of NetApp filers used as a redundant data repository for corporate web portal content.• Utilized F5 load balancers for managing & directing web traffic to provide redundancy for corporateweb portals.• Wrote custom Nagios agents in Perl for remote monitoring of Linux server farms over SSL.• Managed a project to upgrade SunOne Directory Server LDAP instances for multiple business units with zero downtime.• Planned and built a custom Linux development image using VMware to allow developers to test changes to any environment freely without affecting other developers within the same build environment.

Armonk, New York, Ny, Us

• Administration of various Solaris, AIX, HP-UX and Linux servers on a wide variety of hardware.• Member of the Emergency Response Team, maintaining uptime on over 1000 mission critical servers. • Management of both internal and external DNS infrastructures for all Cendant business units.• Managed clustering software for mission critical environments, including VCS, CSM, xCAT andHACMP.• Developed and deployed shell scripts to ensure Unix servers were audit ready for required SOX standards.

Dublin, Ireland, Ie

• Administration of HP-UX across various PA-RISC servers, from K-class to SuperDome hardware.• Managed HP ServiceGuard clusters supporting mission critical applications for Eaton business units around the world.• Designed and implemented a Jumpstart server with FlashArchive Solaris images in an effort to standardize server OS installs. This dramatically reduced the time and effort spent by the administration team to keep up with server hardware refreshes.• Developed and implemented a plan to migrate corporate web portals from iPlanet/SunOne CMS to the FatWire CMS platform.• Lead a project to increase DNS availability and management of an international DNS infrastructure to support Eaton offices, factories and data centers around the globe.• Implemented and maintained EMC SRDF links between multiple data centers for storage replication of SAP instances.• Evaluated new SAN offerings from EMC and Hitachi. Migrated LUNs from older EMC Symmetrix arrays to newer EMC DMX arrays using LVM and VXVM for LUN replication.• Maintained Dazel Output Server and developed print reports for enterprise wide printing.

• Member of Lucent Business Critical Services division, managing all aspects of server administration on servers critical to Lucent Technologies business.• Subject Matter Expert on Sun Enterprise E10k server clusters that supported Lucent Financial division and E-Business environments.• Management of both Sun E10k and HP V-Class server clusters using Veritas FirstWatch and HP ServiceGuard.• Migrated SAP instances across the WAN between data centers using EMC SRDF links, supporting Lucent with their efforts to consolidate and shrink their data center footprint.• Developed scripts using EMC SymCLI to use BCV to split 3-way mirrors to backup online Oracle databases, due to a shrinking backup window and growing data sets.• Supported a project to integrate Dazel Output Server with SAP. This was for mission critical enterprise printing, used to silkscreen circuit boards on the production floor in several Lucent factories, which required extremely low latency print throughput.

Winnipeg, Manitoba, Ca

• Assumed DBA responsibilities for all Oracle and Progress databases, supporting all production and development environments. Wrote reporting software for HR using Oracle PL/SQL. Developed cloning strategy for Progress databases to facilitate refresh of non-production databases for development use.• Capacity planning and procurement of new hardware as needed for growth, and to replace aging end of life hardware.• Managed multiple Clariion SANs located at head office and each casino.• Kernel tuning in Solaris and HP-UX to maximize database performance.• Managed relationship with vendors such as Sun, HP and IBM. Scheduled technology briefings to help team stay abreast of changing technologies.

Winnipeg, Manitoba, Ca

• Developed comprehensive knowledge of all IT systems local to the casino, majority of time spent mentoring incoming junior Network Administrators.• Tier 2 level support for issues escalated up from level 1 Network Administrators.• Trainer to new Administrators on all local IT systems in the casino.• Writing new or amending old procedures for Network Administrators to follow, as well as updating documentation for all networks and systems.

Winnipeg, Manitoba, Ca

• Provided IT operational support to a large number of users and systems in a casino.• Provided network support, hardware and software support, troubleshooting and maintenance, client support, inventory control, and run-book documentation.• Administration of local IT systems including Sun Solaris, OS9, Novell NetWare, Windows NT servers and Windows 95 workstations.• Maintained the operation of network printers, point of sale printers and Wyse terminals.• Basic administration of onsite servers, including disk space management, print queue management, user account management, and daily backups of all systems.