Information Technology End User

202-***-**** ***************@*****.***

**** ****** ****

Clinton MD 20735

Dennis L. Chestnut

Objective

To expand my skills in IT Management and have the opportunity to excel and grow within the Information Technology Field.

Experience

1/2020-Present Dentsu.Parent Co of Merkle Inc. Columbia, MD

O365 Engineer – End User

• Support and Manage the Exchange environment supporting over 50k Mailboxes.

• Maintain and Apply Security Updates and Service Packs to Exchange and Monitor Queue Activity to make sure applications mail Relaying is working as expected.

• Perform around several acquisitions a year migrating user mailboxes and One-Drive data from Merkle’s Tenant to Dentsu’s Tenant.

• Manage Mimecast Mail Security platform to prevent Spam and phishing attempts.

• Work closely with Security Teams and provide statistics for Daily Security Briefings and remediate security incidents regarding email.

• Perform Migration from Skype for Business to MS Teams.

• Create and maintain GPOs and provide Tier 3 Support for the Service Desk using Service Now Ticketing.

• Monitor Office 365 Tenant and reported Performance issues and created MS incidents and worked closely with support resolving any issues regarding the O365 tenant.

• Updated Active Director Schemas and performed cleanups via ADSI Edit.

• Monitor and Deployed Licenses and Security Roles and registered Applications via Azure.

• Restored AD Accounts, Security Groups and mailboxes that was accidentally deleted.

10/2017-1/2020 Merkle Inc. Columbia, MD

O365 Engineer – End User

• Support and Manage the Skype and Exchange environment supporting 7k Mailboxes.

• Deployed Skype for Business 2015 for the EMEA and US regions. Currently deploying new environment for China.

• Perform around several acquisitions a year migrating user mailboxes and One-Drive data to Merkle’s Tenant.

• Manage Proofpoint Mail Security platform to prevent Spam and phishing attempts.

• Work closely with Security Teams and provide statistics for Daily Security Briefings and remediate security incidents regarding email.

• Provide user call quality reports for all Skype/Lync Sites.

• Deployed Exchange 2016 environment to replace Exchange 2010 environment running on Sever 2008.

10/2016-10/2017 TekSystems Contracted to Allegis Group Hanover, MD

Systems Engineer

• Support and Manage the 2007 and 2013 Exchange environment supporting 27k Mailboxes.

• Migrated the MS Exchange 2007 environment to Exchange Online / 2013 Hybrid Environment.

• Worked Closely with Project Managers and provided messaging support for projects that required messaging implementation.

• Oversee the Enterprise Messaging Support for all Allegis Group and Entities.

• Manage MS Office 365 E3 licenses and provide reporting and implemented steps on freeing up additional licenses.

• Create Powershell scripts and use Powershell on daily bases to perform administration, Migrations and reporting of user mailboxes and O365 licenses.

1/2016-9/2016 ActioNet Contracted to US Department of Transportation Washington, DC

Team Lead, Enterprise Messaging

• Support and Manage the 2010 Exchange environment supporting 13k Mailboxes.

• Migrated the MS Exchange 2010 environment to MS O365 Exchange/Hybrid Environment.

• Manage the Lync 2013 Servers Infrastructure for Skype for Business

• Manage the BES 10 environment for 5k BlackBerry Users.

• Manage the GOOD Mobile Messaging environment for 4k IPhone Users.

• Oversee the Enterprise Messaging Team for Supporting all DOT Entities for Enterprise Messaging Solutions.

• Manage MS Office 365 Email environment.

1/2012-12/2015 Graham Holdings Company formally known as The Washington Post Company Rosslyn, VA

Systems Admin, Corporate IT

• Build and monitor VM Host for production physical and virtual servers within our network.

• Migrated the MS Exchange 2010 environment to Google Mail.

• Design build, and implement new Data Centers for the Graham Office Relocation in Rosslyn snd Ft. Lauderdale FL.

• Built VM Host and virtual servers within VM Host and virtual servers within out network

• Implemented ClearPass for Guest Authentication for Aruba Wireless Network.

• Installed and Manage Juniper switches, firewall, VPN Infrastructure and FireEye Appliance for Network Security.

• Manage Symantec EndPoint Security to all Clients Servers and Workstations.

• Installed and configured all SteelCase Room Wizards for Conference Room Scheduling.

• Deployed Workstation Critical Updates and Security Patches via WSUS.

3/2007-1/2012 Southern Maryland Hospital Center Clinton, MD

Director of Technical Services

• Build and monitor all production physical and virtual servers within our network.

• I oversee the helpdesk staff and Security Office and have them report daily on project status.

• Design build, and implement Southern Maryland Hospital’s Intranet site.

• Provide Active Directory user account Administration.

• Manage and provide Desktop and Network Support for 1500 hospital users as well as 10 remote entities spanning from Collection companies to OB and Family Medical Clinics.

• Involved with decision making on all applications that is installed and on the hospitals network.

• Deployed Remote Applications to the IPhone and Droid Devices via Citrix.

• Provide and write policies and procedures for the IT Department and Helpdesk Staff.

• Successfully implemented the LIFENET which is a State of MD Program, Which allows Ambulances to transmit EKG directly to the Hospital before they arrive. I also deployed it to IPhone and Android Phones.

• Implement, monitor and maintain all wireless access point throughout the entire organization. Configured to send out notifications when a Device is down or not responding via email or pagers.

• Maintain and Deployed SEP 11 to all Server and Workstations and Disabled All USB Drives to prevent virus outbreaks and theft of patient information.

• Maintain and finalize contracts and departmental budget Capital and insure the most cost effective method in completing the project on time.

• Deployed 700 XP workstations through out the entire Healthcare System.

• Monitor and approve website access and create and update policies

• Implemented Free WiFi Guest Access through-out the entire Hospital

• Deployment and configuration of Cisco Gig switches throughout the Hospital’s infrastructure in all the network closets.

• Possesses an understanding of Health Information Technology and how to implement it according to HIPAA guidelines. Understanding of how to exchange data between systems using HL7 messaging interfaces.

5/2001-3/2007 Suburban Hospital Healthcare System Bethesda, MD

Sr. Network Analyst

• Build and monitor all production servers in our data center collocation including our HIS Meditech.

• Configured the network switches and build out the new network architecture for the hospital by creating new VLANS for each floor.

• Extensive knowledge with Telnet and Ciscoworks interface.

• Create and administer all user accounts for Network and MS Exchange connectivity.

• Monitor network conditions and traffic for bottle necks and propose necessary recommendations.

• Write proposals for necessary equipment upgrades to insure redundant and secure network architecture.

• Trained Information Security Officer for the hospital and currently working towards my GIAC Certification.

• Disaster Recovery Coordinator for writing, scheduling and testing our Disaster Preparedness Plan with SunGard Recovery Services in Philadelphia PA.

• Perform two Disaster Recovery tests a year, one with our HIS Meditech platform and the other with our NT/2000 platform.

• Implemented wireless thought out the entire hospital 802.11b.

• QA tests using special network set-ups, and consultations to ensure compatibility with network direction and standards

• Deployed 700 XP workstations through out the entire Healthcare System.

• Create, allocate and maintain the storage on the EMC Clarion CX700 SAN. I configure zonings within the Cisco fiber channel switches.

• Finished Migrating from NT 4.0 and Exchange 5.5 to Microsoft 2003 AD structure and Exchange 2000.

• Maintain productivity by using tools such as Websense for internet monitoring and blocking.

• Meditech Operations for scheduled backups and Database Analysis and Integrity Checks.

• Setup configure Cisco switches and routers between the hospital and our outpatient center.

• Monitor bandwidth, network utilization, warnings, errors and maintain routers and switches using tools such a Castle Rock’s SNMPc software.

• Perform monthly image backups of all switches and routers and notified via email if a change has occurred.

• Currently in the designing phases of building a remote Data Center and network architecture.

8/2000-4/2001 Eyecast Corporation. Herndon, VA

Server Systems Engineer

• Engineered the Streaming Architecture for various production projects including our HighwayNet.com website.

• Built and maintain production servers in our Data Center collocation.

• Analyze and test bandwidth usage for Streaming and Motion JPEG applications to be used across a Layer2 or Layer3 Network.

• I'm one of two Server Operations personnel on call 24-7 to support our Network Operation Center.

• Installation of EMC DASD to NT Architecture by SCSI and Fiber Channel switches.

• Developed NT Embedded OS for various servers and encoders.

• Build and setup and configured the switches, routers and servers in the Data Center located in the collocated space in Global Networks Data Center.

8/1997-8/2000 Unisys Corporation Reston, VA

Network Design Engineer

• Manage, administer and maintain hardware and software for USDA’s LAN serving approximately 900 users.

• Manage, administer and maintain CC Mail and Exchange Servers.

• Manage a group of 6 individuals.

• Analyze and resolve error conditions and performance issues related to the LAN environment.

• Manage software applications and services provided on the LAN.

• Communicate with manufacturers to resolve problems encountered with various products.

• Provide advanced internal support for various groups, and recommend solutions to software/hardware problems.

• Plan and execute installation and configuration changes for LAN and workstation software and hardware.

• Write Standard Operating Procedures for hardware and software installation.

• Keep track of and close all trouble tickets within 24 hours of acknowledgment on the DOJ-ASSIST CATS Project.

• Maintain and troubleshoot LAN connectivity for the Hanover, MD Integration Center.

• Troubleshoot and repair PCs that are returned from the field sites.

• Provided 2nd level technical support to the field sites during new installs and trouble tickets

9/1996-8/1997 Aerotech/Contract Engineering Services Reston, VA

Hardware & Software Integrator

• Tested new products with a wide variety of software to ensure compatibility.

• Built complete systems and servers for BTG, Inc.

• Contracted with Unisys working on a special contract with the US Federal Government.

• Tested every system that comes from the Unisys Manufacturer.

• Integrated hardware to customer specifications and kept an accurate account of the US Federal Government owned inventory.

1/1996-9/1996 IBM/Technical Service Solution Rockville, MD

Customer Service Representative

• Undertook the responsibility of making sure that IBM computers were repaired within 24 hours.

• Assigned Special projects, such as site surveys, for IBM products to be installed and had to designate where the cable runs are routed.

• Involved in a 4 Month project that required me to install computers and servers for all of the Riggs Banks locations in the Washington Metropolitan area.

Education

1998-1999 IKON Office Solutions Columbia, MD

MCSE Certification

WinNT Server, TCPIP Implementation, WinNT Workstation, WinNT Enterprise, Internet Information Server, Networking Essentials

1994-1995 Computer Learning Center Alexandria, VA

Electronics Technician Certification (3.9 GPA)

1989-1993 Wakefield High School Arlington, VA

High School Diploma

Skills

Network OS:

Netware 3.X, 4.X, Microsoft NT 3.5, 4.0, 2000,2003, 2008R2, 2012R2, 2016,UNIX, Linux, MAGIC

Client OS:

OS X Leopard, Microsoft Windows 7-10, Windows Vista, Windows XP, Windows 9X, Windows NT, DOS, Linux

Network Hardware:

Routers/Switches: Cisco, Juniper

Firewalls: Cisco Pix, Juniper Netscreen

Remote Access: Microsoft, Cisco VPN Concentrator, Juniper SSL

PCs: Intel based, ALPHA based, Power PC

Servers: Compaq, HP, Dell, IBM

Software:

Powershell, Office 365, Azure, Proofpoint, Skype for Business, Lync 2013, Symantec EndPoint Security, Skype for Business, O365, Google Mail, BES 5 and 10, GOOD Mobile Messaging, Citrix, VM Ware, Meditech, Websense Software, Castle Rock SNMPc, and IPSwitch’s Whats Up Gold, McKesson Trendstar running on Open VMS. McKesson Series 2000 on AS/400, ANSOS (Nurse Scheduling Software), KRONOS, GE MUSE, Philips Xcellera Echo Software, Allscripts Homecare Software and Allscripts NTierprise Software, Cactus and Vision Pro, Tenant Pro, McKesson Horizon, MS-FrontPage, MS-Office, Star Office 5.1, Veritas Back-Up Exec, Legato Networker, Commvault, Service Now, Numara Track-It, Helpstar and Remedy Ticketing software.

Interests

VP of Car Club, Motorcycles, Jet Ski, Outdoor Sports, Biking, Traveling

Reference:

Furnished upon request.

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