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David M.
Siler
Contact
Skills
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Windows administration
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User management
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Program installations
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Software installation
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Desktop troubleshooting
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Technical support
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VMware Implementation
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Server Implementation
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Professional
Summary
Experienced in systems administration and
technical support, adept at server maintenance, user management, and
troubleshooting. Skilled in Windows administration and project execution,
ready to leverage expertise in a new environment. Seeking a position as a
VMware Engineer, Network Engineer or Systems Administrator to contribute
skills and drive organizational success.
Experience
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March 2023 - Present
Systems administrator
Koniag Government Services, College Park, MD
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Administration, patching, upgrading and maintenance of
all on premise servers in a Hyper-V environment.
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Identifying issues in the system and repairing the
issues as well as recommending upgrades as
needed.
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Working with active directory with user and network
accounts as needed.
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Converting physical servers into virtual servers and
retiring the physical servers.
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Adhering to National Archives policy and procedures for
add, move change requests including CAB and SCRUM
meetings.
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Working directly with other departments to accomplish
tasks and projects.
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Assignment: National Archives Records Administration
AMIS
Contract
Administration,
patching, upgrading and maintenance of all on premise servers in
a Hyper-V environment,
Administration, administration, patching, upgrading and
maintenance.
Identifying issues
in the system and repairing the issues as well as recommending upgrades as
needed
Working with active directory with user and network accounts as needed
Converting physical servers into virtual servers and retiring the physical
servers
Adhering to National Archives policy and procedures for add, move change
requests including CAB and
SCRUM meetings
Working directly with other departments to accomplish tasks and
projects
Scanning network with NESSUS and
remediating any issue for compliancy
NITTS
Contract
Administration,
patching, upgrading and maintenance of VCenter housing
6 ESXI hostsand 185 virtual machines,
Administration, administration, patching, upgrading and maintenance
Cisco Hyprerflex and Cisco UCS
Identifying issues
in the system and repairing the issues as well as recommending upgrades as
needed
Working with active directory with user and network accounts as needed
Converting physical servers into virtual servers and retiring the physical
servers
Adhering to National Archives policy and procedures for add, move change requests
including CAB and
SCRUM meetings
Working directly with other departments to accomplish tasks and
projects
Scanning network with NESSUS and
remediating any issue for compliancy
Notable
accomplishments: Upgraded all VMware and Vcenter from 6.7
to 7.0.3
Worked
with storage team to repair several backup issues
Upgraded
UCS to most current version
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April 2020 - March 2023
Service Desk Manager / Sr.
Escalations Engineer / Sr. Project Engineer
DNA Solutions and Consulting, LLC, Baltimore, MD
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On contract to Maryland State Department of Education:
servicing and maintaining 5 VCenters for State of Maryland. (400+ servers
with 50+ nodes. Upgraded VCenters and hosts from VMWare 6.5 to 7.03.
Rebuild 1 full VCenter and migrated hosts and
VMs.
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Managing help desks engineers and taking any customer
service request escalation from Tier 2 or from the Tier 3 team of, that
cannot be resolve and get the request resolved.
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Maintaining and administrator of out connective Manage
and Automate system. Mentoring the Jr. Engineers.
Reviewing and approving time sheets of Jr. Engineers.
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Serving as both Sr. Network Engineer and Network
Administrator on multiple networks using Windows 2012 through Windows 2019
server physical networks and virtual networks.
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Programming & maintaining Juniper, Sonic Wall and,
Netgear, Firewalls and switches, including setting up the rules, NAT and
maintaining internal and external routing tables.
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Configuring, maintaining access control and security
for VPN accounts for hardware and software VPNs.
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Proposing, building, configuring and maintain MS
Exchange, 2010 and 2012 servers.
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Building, servicing, and maintaining Windows 20012 -
2019 Advanced servers. Configuring Raids, and maintaining backups. (On site
and with remote access.)
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Managing Systems and Group Policies.
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Managing and creating logon script.
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Account Migrations across the domain.
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Managing Trust Relationships.
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Setup, monitoring and maintaining Datto and Infrascale
backup appliances.
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Administrating user's database for domain access and accounts that include local access, OWA,
and web access.
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Setting up, migrating and administrating O365.
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Recommending, configuring, and deploying global
anti-virus and anti-spyware solutions.
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Reviewing server logs and setting server policy.
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Building, installing new workstations for new
employees: Including punching new CAT 5 – Cat 6 cabling, and custom
building LAN cables.
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Assembling, configuring, and maintaining ESXI 5.0 –
7.03 based virtual servers including performing P2V conversions on the entire infrastructure.
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Versed in a wide variety in multiple hardware and
software OS platforms ranging from DOS 5.0 to current technologies that
including up to Windows 2019 servers.
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Maintaining, installation, trouble shooting, &
repair, of any and all PC hardware, printer, or
business software.
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Customer relations and communications pre and post job
and project completion.
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Completing client assessment reviews for new and
current customers for recommendations of upgrades of infrastructure.
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Acting and serving as project
management bringing several projects to completion on time and under
budget.
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June 2019 - April 2020
Sr. Escalations Engineer
Skyline, Glen Burnie, MD
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Primary duty is to take any customer service request
escalation from Tier 2 or from the Tier 3 team,
that I am the team lead of, that cannot be resolve and get the request
resolved.
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I also am the team lead for 9 engineers that are Tier 1
and Tier 2 engineers in the Baltimore office. I am responsible for their
day to day operations, ticket count, scheduling
and monthly reviews.
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Serving as both Sr. Network Engineer and Network
Administrator on multiple networks using Windows 2003 through Windows 2019
server networks with RAID 1, 3, 5, &10 on physical and virtual
networks.
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Programming & maintaining
Juniper, Sonic Wall and, Netgear, routers and switches, including setting
up the rules, NAT and maintaining internal and external routing tables.
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Configuring, maintaining access control and security
for VPN accounts for hardware and software VPNs.
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Proposing, building,
configuring and maintain MS Exchange, 2010 and 2012 servers.
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Building, servicing, and maintaining Windows 2003 -
2019 Advanced servers. Configuring Raids, and maintaining backups. (On site
and with remote access.)
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Managing Systems and Group
Policies.
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Managing and creating logon script.
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Account Migrations across the domain.
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Managing Trust Relationships.
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Setup, monitoring and maintaining Datto and Infrascale
backup appliances.
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Administrating user's database for domain access and
accounts that include local access, OWA, and web
access.
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Recommending, configuring, and deploying global
anti-virus and anti-spyware solutions.
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Reviewing server logs and setting server policy.
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Building, installing new workstations for new
employees: Including punching new CAT 5 – Cat 6
cabling, and custom building LAN cables.
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Assembling, configuring, and maintaining ESXI 4.0 – 6.5
based virtual servers including performing P2V conversions on the entire
infrastructure.
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Versed in a wide variety in multiple hardware and software OS platforms ranging from DOS 5.0 to current
technologies that including up to Windows 2019 servers.
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Maintaining, installation, trouble shooting, &
repair, of any and all PC hardware, printer, or business software.
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Customer relations and communications pre and post job and project completion.
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Completing client assessment reviews for new and
current customers for recommendations of upgrades of infrastructure.
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Acting and serving as project management bringing
several projects to completion on time and under
budget.
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July 2018 - June 2019
Systems Operations Team Lead /
Infrastructure Specialist
Parsons, Columbia, MD
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Current primary duty is building out new internal
network infrastructure according to plan that will replace 3 separate
networks.
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Testing and monitoring connections from colo to
datacenter.
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Monitoring Infrastructure and remediation.
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Working with VMWare products for monitoring. (VRealize
OM, VSphere, ESXI 6.7 Adaxes).
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Working with other teams to ensure on time deliverables
and project completion.
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Promoted from Systems Operations team lead to
infrastructure specialist.
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Lead team of 8 for daily tickets from users and
bi-weekly sprints for projects.
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Current Security clearance: Interim Secret. In process
for TS with SCI.
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May 2011 - July 2018
Sr. Escalations Engineer / Tier 3
Team Lead / Team 5 Team lead
Dataprise, Rockville, MD
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Primary duty is to take any customer service request
escalation from Tier 2 or from the Tier 3 team, that I am the team lead of,
that cannot be resolve and get the request
resolved.
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I also am the team lead for 9 engineers that are Tier 1
and Tier 2 engineers in the Baltimore office. I am responsible for their
day to day operations, ticket count, scheduling and monthly reviews.
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Serving as both Sr. Network Engineer and Network Administrator on multiple networks using Windows
2003 through Windows 2012 server networks with RAID 1, 3, 5, &10 on
physical and virtual networks.
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Programming & maintaining Juniper, Sonic Wall and,
Netgear, routers and switches, including setting
up the rules, NAT and maintaining internal and external routing tables.
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Configuring, maintaining access control and security
for VPN accounts for hardware and software VPNs.
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Proposing, building, configuring and maintain MS
Exchange, 2010 and 2012 servers.
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Building, servicing, and maintaining Windows 2003 -
2012 Advanced servers. Configuring Raids, and maintaining backups. (On site
and with remote access.)
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Managing Systems and Group Policies.
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Managing and creating logon script.
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Account Migrations across the
domain.
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Managing Trust Relationships.
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Setting up and Maintaining backups using Backup Exec
Ver. 9-14.
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Administrating user's database for domain access and
accounts that include local access, OWA, and web access.
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Recommending, configuring, and deploying global anti-virus and anti-spyware solutions.
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Reviewing server logs and setting server policy.
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Maintaining security for SharePoint 2012 servers for
several customers.
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Building, installing new workstations for new
employees: Including punching new CAT 5 – Cat 6
cabling, and custom building LAN cables.
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Assembling, configuring, and maintaining ESXI 4.0 – 5.5
based virtual servers including performing P2V conversions on the entire
infrastructure.
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Versed in a wide variety in multiple hardware and
software OS platforms ranging from DOS 5.0 to
current technologies that including up to Windows 2012 servers.
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Maintaining, installation, trouble shooting, &
repair, of any and all PC hardware, printer, or business software.
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Customer relations and communications pre and post job and project completion.
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Completing client assessment reviews for new and
current customers for recommendations of upgrades of infrastructure.
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Acting and serving as project management bringing
several projects to completion on time and under budget.
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Rockville, MD
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Notable Accomplishments: Completed and passed 73 VMware
tests, completed VMWare 63 courses, completed VMware 23 accreditations and
2 VMware certification. Completed several Dell courses to assist in keeping
company compliant with partner program. Received
3 separate promotions since I have been with Dataprise.
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June 2008 - May 2011
Network Engineer
DP Solutions, Columbia, MD
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Serving as both Network Engineer and Network
Administrator on multiple networks using Windows 2000 through Windows 2008 server networks with RAID 1, 3, & 5.
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Programming & maintaining Juniper, Cisco, Sonic
Wall and, Netgear, routers and switches, including setting up the NAT and
maintaining internal and external routing tables.
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Configuring, maintaining access control and security for VPN accounts for hardware and
software VPNs.
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Proposing, building, configuring and maintain MS
Exchange 2003, 2007 and 2010 servers.
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Proposing, building, configuring and maintaining
Blackberry Enterprise Servers.
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Building, servicing, and
maintaining Windows 2003 & 2008 Advanced servers. Configuring Raids,
and maintaining backups. (On site and with remote access.)
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Managing Systems and Group Policies.
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Managing and creating logon script.
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Account Migrations across the domain.
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Managing Trust Relationships.
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Setting up and Maintaining backups using Backup Exec
Ver. 9-12.
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Administrating user's database for domain access and
accounts that include local access, OWA, and web access.
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Recommending, configuring, and deploying global
anti-virus and anti-spyware solutions.
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Reviewing server logs and setting server policy.
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Building, installing new workstations for new
employees: Including punching new CAT 5 – Cat 6 cabling, and custom
building LAN cables.
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Assembling, configuring, and maintaining ESXI 4.0 based virtual server including performing P2V
conversions.
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Versed in a wide variety in multiple hardware platforms
ranging from 8086 computers to current technologies that include up to
Windows 2008 servers.
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Maintaining, installation, trouble shooting, & repair, of any and all PC hardware, printer, or
business software.
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Customer relations and communications pre and post job
completion.
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Completing client assessment reviews for new and
current customers for recommendations of upgrades of infrastructure.
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Notable Mention: Have
received many thanks you emails from clients and have been in the company
newsletter on many occasions due to my customer service ability and client
management skills.
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Notable Accomplishments: Tested and certified in:
Juniper SA-700, IBM System x BladeCenter
Technical Support V5, IBM Certified Specialist - High Volume Storage
Fundamentals V, IBM Certified Specialist - System x Technical Principles V9
and Citrix Certified Administrator for Citrix XenDesktop 4.
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October 2005 - June 2008
Sr. Network Engineer
Americas Remote Helpdesk, Eldersburg, MD
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Serving as both Sr. Network Engineer and Network
Administrator on multiple networks using Windows Server 2000 through
Windows Server 2008 networks, with RAID 1, 3, & 5.
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Programming & maintaining Cisco 1700, ADSM, Cisco
Catalyst Series, Sonic Walls, Netgear, routers and switches, including
setting up the NAT and maintaining internal and external routing tables.
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Configuring, maintaining access control and security
for VPN accounts for hardware and software VPNs.
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Proposing, building, configuring Exchange 2003 Servers.
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Proposing, building, configuring Blackberry Enterprise
Servers.
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Building, servicing, and maintaining Windows 2003
Advanced servers. Configuring Raids, and maintaining
backups. (both on site and with remote access.)
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Managing Systems and Group Policies.
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Managing and creating logon script.
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Account Migrations across the domain.
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Managing Trust Relationships.
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Setting up and Maintaining backups using Backup Exec
Ver. 9-12.
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Administrating users' database for domain access and
accounts that include local access, OWA, and web access.
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Recommending, configuring, and deploying global
anti-virus and anti-spyware solutions.
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Creating, deploying, and monitoring solutions via LogMeIn scripting.
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Reviewing server logs and setting server policy.
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Building, installing new workstations for new
employees: Including punching new CAT 5 – Cat 6 cabling, and custom
building LAN cables.
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Versed in a wide variety in multiple hardware platforms
ranging from 8086 computers to current
technologies, that include up to Windows 2008 server.
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Maintaining, installation, trouble shooting, &
repair, of any and all PC hardware, printer, or business software.
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Parts ordering for repairs: Including filling out and submitting purchase request.
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Customer relations and communications pre and post job
completion.
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Completing client assessment reviews for new and
current customers for recommendations of upgrades of infrastructure.
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Notable Mention: Promoted from Network Engineer to Sr. Network Engineer within one year of
employment.
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Notable Accomplishment: Rebuild several networks
migrating customers from older hardware and operation systems, to current
hardware / software with very little no down time.
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January 2004 - October 2005
MIS Director
Art Litho, Baltimore, MD
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Serving as both Network Engineer and Network
Administrator on a Windows NT 4.0 / Windows 2003 Server A/D Network, with
RAID 1, 3, & 5, 1 PDC, 1 BDC, 1 Applications, 1 Storage, 1 Web Server,
I-Mail Server, 2 FTP servers, 1 SQL Server with
Active directory installed.
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Programming & maintaining Cisco 1700 series router
including setting up the NAT and maintaining internal and external routing
tables.
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Configuring, maintaining access control and security for dial in accounts using Shiva Land Rover.
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Building, servicing, and maintaining NT Advanced
servers. Configuring Raids, and maintaining backups. (both on site and with
terminal server.)
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Managing Systems and Group Policies.
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Managing and creating logon script.
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Account Migrations across the domain.
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Managing Trust Relationships.
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Administrating users database for domain access and
I-Mail accounts that include local access, and web access to the account.
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Reviewing server logs and setting server policy.
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Building, installing new
workstations for new employees: Including punching new CAT 5 cabling, and
custom building LAN cables.
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Versed in a wide variety in multiple hardware platforms
ranging from 8086 computers to current technologies that include up to
Windows 2003 server.
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Maintaining and repairing Apple/Mac computers for
Prepress department that range from OS8 to OS 10.
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Maintaining Inter-Tel phone system, voice mail, and
phone assignments to current and new users. This included VOIP over a
dedicated Point –to-Point T1 for a satellite
office.
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Maintaining Control Access to buildings, including card
key assignments, and reviewer of daily access logs.
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Maintaining, installation, trouble shooting, &
repair of any and all PC hardware, printer, or business software.
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Parts ordering for repairs:
Including filling out, and submitting purchase orders.
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Customer relations and communications pre and post job
completion.
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Notable Mention: Was awarded employee of the month
award after 90 days of service due to ability to save the company over $15K, ability to provide web access to
Prepress department who had not had web access before, and salvage of
several Non Functioning pieces of equipment making them functional for
minimal cost.
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Notable Accomplishment: Rebuilt entire network in 2 weeks, converting from Windows NT 4.0 Servers and
workstations to Windows 2003 Server and Windows XP SP2, with NO data loss.
This project included 1 PDC, 1 BDC, 1 Mail, 1 SQL Server and 30
Workstations. It also required upgrading from SQL 7.0 to SQL 2000.
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December 2002 - October 2003
Electronics Service Manager
Popowski Brothers, Inc., Timonium, MD
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Serving as both Network Engineer and Network
Administrator on Windows 2000 Active Directory Network on a 1 RAID 5 and 1
RAID 3 and 1 TERMINAL server.
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Configuring, maintaining access control and security
for dial in accounts.
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Configuring, maintaining access control and security
for VPN users.
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Building, servicing, and maintaining NT Advanced
servers. Configuring Raids, and maintaining backups. (both on site and with terminal server.)
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Managing Systems and Group Policies.
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Managing and creating logon script.
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Account Migrations across the domain.
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Managing Trust Relationships.
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Maintaining client connectivity over 3 sites. 2
Maryland, 1 Virginia.
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Administrating users database
for domain access and Exchange server 5.5 accounts.
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Reviewing server logs and setting server policy.
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Building, installing new workstations for new
employees: Including punching new CAT 5 cabling, and custom building LAN
cables.
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Versed in a wide variety in
multiple hardware platforms ranging from 8086 computers to current
technologies that include server.
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Servicing any and all Electronic items: Including
residential and commercial items.
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Providing estimates of electronic repairs to insurance adjusters and customers.
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Scheduling employee's workloads for pickups deliveries
and repairs.
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Reviewing, hiring, counseling and termination, (if
necessary), of employees, with the cooperation of Human Resources.
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Parts ordering for repairs: Including filling out and submitting purchase orders.
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Customer relations and communications pre and post job
completion.
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October 2001 - December 2002
Sr. Desktop Analyst
Integrated Health Services, Hunt Valley, MD
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Developed plans for test, evaluation and deployment of software in R+D Lab.
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Designed, built, documented, and evaluated test bed for
all desktop applications.
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2nd level support for resolution of user network
connectivity issues.
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Installation and usage of the following software:
WSFTP, Secure CRT, Windows NT Workstation 4.0, Windows 95/98, ME, Windows
2000 Pro. MS Office 2000, Visio 2000, PaintShop Pro 7, Homesite 4.5, MS
Project, Palm Software, PeopleSoft 7.06 & 8.0, Terminal Server, and many others.
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2nd and 3rd level support for troubleshooting and
servicing any/all hardware, (computers, laptops, and printers), on site.
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Designed, Tested, Deployed, Desktop/Laptop images, for
enterprise solution. (Over 270 locations Nationwide.)
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Ordering, configuring all
desktops, laptops, software and licenses, as well as maintained all desktop
audit info of HW/SW and license compliance.
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Designed and Implemented, Alpha & BETA, testing
Project of Universal Desktop/Universal Laptop images globally, including the coordination of communication between
departments for software testing phases.
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Configuration, integration, and maintenance of Windows
NT 4.0 Servers, IIS Servers, and Windows 2000 Servers.
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Administration of user accounts and permissions on Windows NT/ 2000 Active Directory Servers, and MS Exchange
5.5 Servers.
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Managing Systems and Group Policies.
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Managing and creating logon script.
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Account Migrations across the domain.
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Managing Trust Relationships.
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March 2000 - October 2001
Network Engineer / Desktop Support
Manager
TSR, eSylvan, Baltimore, MD
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Configuration, integration, and maintenance of Windows
NT 4.0 Servers, IIS Servers, and Windows 2000 Servers.
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Administration of user accounts and permissions on
Windows NT Servers, MS Exchange 5.5 Server,
Novell 5.0 Server, and eRooms Servers.
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Developed plans for test, evaluation and deployment of
software in R+D Lab.
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Designed, built, documented, and evaluated test bed for
all new desktop applications.
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2nd level support for resolution of customer network connectivity issues.
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Installation and usage of the following software:
WSFTP, Secure CRT, Windows NT Workstation 4.0, Windows 95/98, ME, Windows
2000 Pro. MS Office 2000, Visio 2000, PaintShop Pro 7, Homesite 4.5, MS
Project, Palm Software HelpAlert 3.6 (real time
end user troubleshooting tool), network connection and monitoring tools.
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Education
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Johns Hopkins University in Business/Information
Technologies
Johns Hopkins University, Baltimore
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Anne Arundel Community College in Criminal Law
Anne Arundel Community
College
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Certifications
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VMWare: VCA, VCP-DCV, VSP, VTSP, VSE, VOP
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Juniper SA-700
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IBM System x BladeCenter Technical Support V5
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IBM Certified Specialist - High Volume Storage
Fundamentals V
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IBM Certified Specialist - System x Technical Principles V9 and Citrix Certified
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IBM Blade server: H, S and E chassis certifications
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Certified Juniper SSG 5 Firewalls
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Certified NetWare 4.11 Administrator (CNA)
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Certified Webmaster: Received Jan. 27, 1999 from Johns
Hopkins University
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Certified CompTIA
A+
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Certified CompTIA Security+ CE
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Currently holding 250+ Certifications granted by various hardware
manufactures
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Military Service
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Operation Specialist, United
States Navy, Honorable discharge, 1984-02-01, Provided air traffic control,
tracking, navigation, and surveillance, on board the U.S.S. Dwight D.
Eisenhower CVN-69 aircraft carrier
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Police Service
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Reserve Officer, Anne Arundel
County Police Department, 6129, 2, Traffic control, Neighborhood patrol,
Prisoner booking, Report writing, Event security, Any other duties assigned
by the duty sergeant, Promoted to corporal after 1 year service, Assigned
to Pope John Paul II protection detail at BWI, Awarded “In Service” award
ribbon
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Anne Arundel County Police Service
ID Number: 6129
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Website, Portfolio and Profiles
References
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References available upon request
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