David O'Brien Email & Phone Number
System Administrator @ D2 Consulting
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David O'Brien Location
- Manassas, VA, US
David O'Brien Work
- 2023 - now System Administrator @
- 2022 - 2024 Windows SME @
- 2021 - 2021 Cyber Security Consultant (Remote) @ Baron Enterprises LLC. / Boral North America
- 2019 - 2021 System Administrator @ ECS Tech.
- 2017 - 2019 Senior Cyber Security Engineer @ ManTech International Corporation, Health and Life Sciences - Defense Health Age
- 2018 - 2019 Senior Cyber Security Engineer @ Mantech - Virtual VA IT Campus
- 2016 - 2017 Senior Cyber Security Engineer @ ManTech International Corporation - Mission, Cyber & Intelligence Solutions Grou
- 2015 - 2016 Service Delivery Manager @ Accenture Federal Systems
- 2013 - 2014 Information Security Engineer II @ Chenega Technical Innovations
- 2012 - 2013 Computer Systems Analyst @ Chenega Technical Innovations
- 2010 - 2012 Systems Engineer @
- 2005 - 2010 Customer Network Engineer @
- 2000 - 2005 Lan and Wan Specialist II @ Raytheon Intelligence and Information Systems
- 1996 - 2000 System Admin @ G.R.C.I
David O'Brien Education
- George C Marshall
David O'Brien Skills
- Information Assurance
- Systems Engineering
- Windows Server
- Network Security
- System Architecture
- DNS
- Servers
- Switches
- Security Clearance
- Software Installation
- CISSP
- Security
- DoD
- Security+
- Cisco Technologies
- VMware
- Program Management
- Microsoft Exchange
- TCP/IP
- System Administration
- Disaster Recovery
- CompTIA Security+
- U.S. Department of Defense
- Information Security
- Computer Security
- Active Directory
- Information Technology
- Computer Hardware
- Vulnerability Assessment
- System Deployment
- Group Policy
- STIG
- scap scan
- windows system hardening
- ivanti patch server
- VMWare ESXi
- NetBackup
- WSUS
- Nessus eye retina
- Printing
- HP Blade
- Novell
- Windows NT
David O'Brien Summary
- David O'Brien, based in Manassas, VA, US, is currently a System Administrator at D2 Consulting. David O'Brien brings experience from previous roles at 22nd Century Technologies Inc., Baron Enterprises LLC. / Boral North America, ECS Tech. and ManTech International Corporation, Health and Life Sciences - Defense Health Age. David O'Brien holds a George C Marshall. With a robust skill set that includes Information Assurance, Systems Engineering, Windows Server, Network Security, System Architecture and more. David O'Brien has 2 emails and 2 mobile phone numbers on RocketReach.
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Top D2 Consulting Employees
David O'Brien
System Administrator
Manassas, VA, US
Doug Harding
Chief Architect
Great Falls, VA, US
Deirdre Findlay
Owner
Guildford, England, GB
Alejandro V.
Operations Specialist
Washington, DC, US
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