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Sr. Systems Administrator

San Rafael, California, United States
August 29, 2017

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Greg Dowson

*** ******** **** *** *** Rafael, CA 94901 415.***.****

Systems Administrator


Analytical, highly technical Systems Administrator proven in optimizing enterprise-wide systems against aggressive business requirements. Certified expert for VMware, ESX, IIS, Windows, Citrix, Linux, server-builds, migration, administration, clustering, and security. Significant expertise in root cause analysis and timeliness for resolving Windows, VMware, and Linux issues. Collaborative leader skilled in building relationships with peers, direct reports and C-level.

Areas Of Expertise

VMware Server Administration

NAS/SAN Storage Administration

Linux System Administration

Windows System Administration

Citrix System Administration

SQL Server Administration

WAN/LAN troubleshooting

Server Deployments

Exchange System Administration

Professional Experience

National Mortgage Insurance, Emeryville

Sr. System Administrator, February 2016 – Present

Developed GPOs, PowerShell scripts, Active Directory components, AD migration, and security on Windows Server 2008 and 2012. Created and maintained a 30 server-Citrix Windows 2008 Farm using VMware, Citrix Provisioning, Director, Studio-Storefront, NetScaler, VDI. Migrated the Citrix Farm to Windows Server 2012 including user settings and profiles. Basic Linux CentOS server administration-patching, roles and permissions, cron jobs, Bash shell scripting, virtualization. Collaborated and communicated effectively with users and management regarding Change Control, troubleshooting, and migration. Built, maintained and patched both physical and virtual servers, ESXi and Cisco UCS servers, Net App storage, SharePoint sites, application deployments, DFS, SFTP and FAX server, SSO, RSA-SSL two factor secure login. Office365 Exchange administrator. Network administration, security, ACLs, F5, Firewalls, Cisco routers. Infrastructure project team lead-supervisor. Migrated servers to AWS. Setup Veeam backups. Managed PKI servers and issuing certificates.

Migrated 150 users to Citrix Desktop on Windows Server 2012 on schedule providing better performance.

Developed 25 GPO policy settings for Citrix Desktops on Windows Server 2008 and 2012 and numerous GPOs.

Developed 5 VMware server farms including patching, HA, SRM, failover, migration, VCenter and ESXi servers.

Wells Fargo Bank, San Francisco

Operating Systems Engineer, Nov 2015 – January 2016

Engineered and deployed an on-premise Azure Cloud system (IAAS/PAAS) including SCOM/VMM, Hyper-V, VMware, cluster server configuration with administrative and tenant portals, and service templates. Completed project ahead of schedule and under budget.

IBM, San Francisco

VMware System Administrator, May 2015 – Nov 2015

Deployed and administered VMs including Windows 2012 servers, SQL servers and clusters for Xerox and New York State. Built and configured vCenter on multiple sites including vMotion, storage, PowerCLI scripts and SQL databases. Deployed 40 Windows 2012 VMs in the virtual Rochester and Poughkeepsie datacenters. Prepared server artifacts and documentation. Built and configured 20 ESXi servers on IBM Flex chassis including FC storage. Lead VMware operations engineer and Windows system administrator for quickly resolving complex VMware, Windows and related network issues including Active Directory, system firewalling, GPOs, access policies, system security, user accounts and file/folder permissions.

AUTODESK, San Rafael

Sr. System Administrator, April 2014 – April 2015

Strategic, operations authority over SCCM administration, OSD task sequences, MDT, software deployment, patching, and SQL reports for PCs and servers. Administered 2400 VM datacenter including server builds, vCenter converter, VMotion, DRS, HA, PowerCLI scripts, SRM, configuring ESXi and Cisco UCS physical servers. Innovated PowerShell scripts for automating Windows operation tasks. Migrated to Windows 2012 domain controllers, including Active Directory, GPOs, DNS, and DHCP administration. Engineered and administered Hyper-V, Citrix, VDI, EMC SAN, SCOM, Exchange 2007/2010/2013, MS SQL servers, including AWS, Azure cloud services, Azure AD Connect.

Developed disaster recovery plans and executed disaster recovery testing using SRM for 100 production VMs.

Lead engineer for migrating 650 Windows 2003 servers to Windows 2008/2012 VMware.

Migrated 30 SCCM 2007 servers to SCCM 2012 including primary, secondary and distribution point.

Greg Dowson, Page 2


Sr. System Administrator 2013 – 2014

Deployed and administered 42 Linux and 110 Windows 2008 servers. Wrote PowerShell and Linux shell, Perl and cron job scripts to automate tasks, alerts, datafeeds and encryption. Built and administered Active Directory, GPOs, domain controllers, IIS/2003/2008/2012, SMTP, SNMP, Kerberos, NTLM, LDAP, DNS, DHCP, NAS/SAN storage, Raritan KVM, Citrix presentation, XenApp and XenServers. Configured eVault server backups and developed disaster recovery plans. Developed infrastructure documentation, and PCI security compliance. Lead WSUS Windows and Linux patching. Supported Linux CentOS for java/Apache based websites, MySQL, Postgres, patching and package installs. Configured PKI, encryption, SSL, SSH, SFTP, SSH on Linux servers. Implemented SCCM for deploying PCs. Configured Dell PowerVault, EqualLogic iSCSI storage, Dell servers, Cisco 2150 routers, VPNs, Meraki firewalls, Cisco Catalyst 3750 switches, ASA 5500, PDUs, Cisco wireless APs, Cisco VoIP phones, Apple OS X.

Built and deployed 63 Windows 2008 VMware servers, Windows 7/8 PCs and Macs for the Shanghai datacenter.

Configured Office 365 MS Exchange, SharePoint, Lync and desktop applications for 350 employees.

Built and configured VMs, ESXi, vCenter, vSphere upgrades, HA, FT, VDS, and clustering – DRS.

Lead operations engineer quickly resolving complex issues including ESXi networking, VM backups and recovery.


Sr. System Administrator, 2009 – 2013

Administered Windows 2003/2008/2012, Linux, Solaris and VMware servers, including ESX, P2Vs, SAN storage, fiber switches, and Commvault backups for 625 servers in multiple datacenters. Point of contact for Group Policy, Active Directory, DNS, DHCP, LDAP, IAS, CIFS, NFS, print servers, DFS, clustering, load balancing and firewalls. Updated and maintained 600 virtual Windows and Linux servers. Integrated security policies, patches and vulnerability remediation across multiple platforms. Configured MS Exchange server roles. Documented and tested disaster recovery plans and BCPs.

Improved server operations via innovations that included clustering servers and structuring VMware operations and backups (VDR).

Devised and built Bash, VBScript, PowerShell, and batch executables to automate server administration tasks.


Sr. System Administrator, 2007 – 2009

Deployed and administered Windows 2000/2003 server infrastructure for multimillion-dollar clinical processes and applications. Built, configured and administered Windows 2000/2003 server farms supporting applications, databases, IIS and Citrix under cGMP. Gathered and translated user requirements for server builds. Built, migrated and administered 25 Windows 2003 HP application servers and infrastructure.

Developed and controlled Windows 2003/SQL cluster datacenter with 74 servers ($125K under budget).

Built, test-validated and maintained a 10-server Citrix farm configuring Oracle, SQL databases, ETLs.


Sr. System Administrator, 2005 – 2007

Directed technical facets of Windows 2000/2003 server builds and administration including QA testing, documentation and gathering business requirements. Served as Windows 2000/2003/VMware/Citrix server administrator, building, configuring, migrating and maintaining server farms supporting 20 clinical applications under cGMP. Designed – maintained IT security including Active Directory and Group Policy for 600 users.

P2Ved, built, and maintained 57 servers on VMware-Windows 2003-Citrix saving $325,000.

Administered 60 physical server migrations and upgrades, including performance tuning/monitoring.


Supervisor – Computer Information and Telecommunication Systems, 2000-2005

Technical lead for Windows NT/2000/2003 server administration, supervising three system administrators and one network administrator. Migrated and backed up database servers. Prepared disaster recovery plans and designed QA testing. Utilized Windows Resource kit tools and diagnostic scripts, troubleshooting firewall, VPN, IIS, DNS, WINS, NetBIOS, DHCP, TCP/IP and LDAP issues.

Education & Certifications

Stanford University - MS Engineering Management BS Engineering Computer Systems Engineering

* VMware Certified Professional (VCP5-DCV)

* MS Certified Systems Engineer (MCSE 2012)

* MS Certified Technical Specialist (MCTS –SCCM 2012)

* MS Certified Database Administrator (MCDBA)

* MS Certified Professional + Internet (MCP+I)

* MS Certified Professional (MCP)

* Oracle Certified Professional (OCP)

* Oracle Certified Master DBA

* Network Security Specialist Certificate

* Cisco ICRC Certificate

* Project Management Program (PMP) Certificate

* Citrix Certified Administrator (CCA)

Technical Expertise

Languages: SQL, VBScript, PowerShell, Linux Bash Shell, Perl, Batch Scripting, My sample scripts are at

Other Applications: HP SAN/NAS, Symantec NetBackup, Symantec (Antivirus SCSP, ESM, SEP), WSUS, MS Project/Access/ Office/Visio, BMC Portal, Sysinternals, Tivoli, BigFix, Infoblox DNS, DHCP, IPAM

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