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Telecommunications Specialist Active Directory

Chester, VA
November 10, 2021

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Leopold Crawford




Experienced self-starter IT professional with over 25 years of service in IT services. Currently I am working in Client/server and Data Center Environment configuring and working on various equipment, running cabling, and working on Fiber and Copper cabling. Am also being “Smart-Hands in the Data Centers and being proactive working trouble ticket and solving cases of trouble. I possess a highly competitive knowledge of routing protocols. I have excellent network trouble-shooting skills on the most popular routing protocols, with a particular interest in BGP. I strive to work with teams for creating successful results for issues ranging from server support and administration, network and IT infrastructure implementation. This also would include project management of which I have good experience. I am adept at resolving LAN/ Wan connectivity issues, resolving router and switch configuration issues, and I have a desire to succeed by troubleshooting networks and computer-based software and virtual system issues.


Rack and stack

Copper and fiber Cabling

Dealing with Cat 4, 5, 5e, category 6 cabling as well as single mode, multi-mode fiber optics cable and Nexus data Center 10 gigabit cabling.

Skilled at routing protocols: BGP, EIGRP, OSPF, RIP, Cisco routers and switches and Pix /ASA firewalls.

Protocols: (MLPS, QOS, VOIP, DWDM, SD-WAN and Wireless.) I have understanding and functionality of the following. Velocloud, Azure, Amazon Warehouse Services, Cisco Nexus devices, Cisco Virtual Server V1000, vSphere 5, Alcatel routers, ADTRAN Routers, ASA Firewall, Palo Alto Firewalls, Cisco CAT-OS and Cisco IOS, Cisco, F5 .GPON, Calix, Cisco Prime, Cisco Identity Service Engine ISE, Splunk, Wireshark, What’s up Gold and HP OpenView.


IT Technician: ATOS and World Wide Technical Services, Dublin, OH

November 2017 – Present

Reevaluate and create alternate server racks designs and management that give better controls, Rack and stack.

Installation and mounting of fiber optics, copper, and data/voice cabinets.

Examples of equipment installed. Fiber, CAT6, CAT5, CAT3, Coax, Data Racks, Servers, Patch Panels, Security Panels and main Technician on different projects.

Support and Implementation of VMware SD-WAN Velocloud.

Setup and implementation of VMware Velocloud Edge 840

Responsible for engineering desktop technologies on PC and Apple computers and Apple and Android mobile devices, Laptops and servers.

Azure Portal Administration

Office 365 Administration and support

InTune portal administration and setup

VMware and Microsoft Hyper-V Server implementation and administration

Scripting with PowerShell and Python

Excellent command of Linux and Free BSD Unix operating systems

Active directory administration, SCCM implementation and troubleshooting

Microsoft Configmgr administration and

Responsible for Network and VOIP moves, adds and changes.

Installing software upgrades and patches

Configuring Cisco switches, troubleshooting wireless devices (Guest and corporate.)

Imaging new computers to company software images

Configuration of print servers

Troubleshooting printer and Fax machines.

Freelance Network Engineer March 2017 to November 2017

AT&T/Family Dollar

Columbus, Ohio

40-55 hours per week average

Most of my freelance work entails:

Working for a variety of vendors. Completing request of business and Project managers for installing network equipment such as routers, switches, access points and wiring cable.

Setting up IDF's and MDF's. As well as extending the Demark.

Handle Incident, Problem and Change Managements tickets on Remedy.

Provide AD engineering support focusing on the design, implementation, testing, and maintenance of AD services.

Maintains network performance by performing network monitoring and analysis, and performance tuning; troubleshooting network problems; escalating problems to vendor.

Century Link Corporation / Dublin, Ohio January 2015 – March 2017

Network Provisioning Engineer

40 hours per week

Network Provisioning Engineer. Responsible for Turn up of new business customers. Configured Routers at the Network layer, which is layer 3, Switches at the data link layer, which is Layer 2, as well as configuring Access Points, wrote firewall rules and access list for applications and protocols... Worked Trouble tickets. Responsible for customer facing daily, resolving network related problems for company clients. Worked on Alcatel 7750,Cisco 10000, Juniper MX960 and 360 devices, Cisco 4000, Nexus 7K,5K and 2K .Calix boxes, GPON’s and Fiber Networks, Poll DSLAM.

Daily worked in a Call cue turning up new business systems at Layer 2 and Layer 3.

Setting up voice and Data VLANs, Implementing phones and wireless network as well as

configuring router connectivity to the LEC.

Testing all areas of the network Install so that the Client business manager and the CenturyLink project manager could sign off on delivered project.

Wrote firewall rules and access list for applications and protocols.

Worked Trouble tickets. Manage tickets related, but not limited to, incidents, system(s) diagnostics/troubleshooting, network/system upgrades.

Adept at use of Remedy and Service Now ticketing systems.

Increased team productivity and automated repetitive tasks by using batch files and PowerShell.

Developed validation PowerShell scripts for all upgrades to cisco switches.

Responsible for customer facing daily, resolving network related problems for company clients.

Created and managed Group Policies for an Active Directory environment and over 200 servers with over 6000 users.

Participated with the installation, monitoring, maintenance, support, and optimization of all network

hardware, software, and communication links

Perform O&M activities related to the management of enterprise scale Active Directory to include maintenance actions, engineering changes, upgrades, and remediation of potential security vulnerabilities.

Modification and maintenance of Directory Services environment - Active Directory, DNS etc.

Provided designs, did implementation, and supported of Cisco Networking technologies

Installed, configured, and troubleshoot a full range of Cisco Networking technologies (BGP EIGRP, Spanning tree,

Done performance test simulations, performance analysis, performance tuning, performance monitoring in a n-tier environment

Participated in and designed and tested customer projects within our Enterprise Networking Practice Labs.

Created and presented documentation during the project implementation process

Presented Cisco Enterprise Networking topics and solutions to clients, partners, and teammates.

Performed hardware and software installation of Cisco routers for Commercial and corporate clients.

Collaborated with other engineers to continually improve our delivery methodology and share best practices and lessons learned

Provided input to the sales team on product positioning and differentiation and assisted in Sales presentation

Assists with technical escalation from NOC and Customer Engagement

Microsoft Corporation /Tata Consultancy Agency, Seattle, WA Sep 2012 – Jun 2013

Network Architect/Engineer (Data Center Concentration)

40 hours per week

Global Data Center Implementation “Team member” for MSN, Windows Live, Azure, Shared Network Data Centers.

Job entails “Hands On” Managing and implementation of online business Network and server Technologies throughout Global Data Centers, including Nexus Router and switches, F5 Load Balancers and BIG IP appliances.

Configuration and set up of Nexus 7, 5 and 2K switches

Configuration of Virtual Port Channels on Nexus switches

Configuring configured with VDC, VPC, FEX, OTV

Cisco NEXUS switches (5000, 7000, 6000, 9000 series)

Implementing fiber channel over Ethernet and MDS Storage Technologies

Setting up Supervisor modules

Network Center design

Implemented Cisco ASA, Palo Alto, Fortinet firewalls

Configuration of F5 LTM and GTM load balancers.

Configured Routing protocols

Troubleshooting routing and switch problems and Outages.

Wrote Methods of Procedures (MOPS)

Implemented Change Management Policies

Hosted Peer Review of Change Management Team Designs

Racking and stacking routers, servers, and switches

Cabling network devices and doing initial configurations

Setting up server farms

Refreshed Data center Juniper and Cisco routers and Alcatel routers

Implemented Firewalls and load balancers

Wrote Methods of Procedures (MOPS) and Standard Operating Procedures (SOPS)

Managed related contractual services and Data Center obligation with third parties.

Troubleshoot network performance issues, identify, and recommend performance tuning.

Perform Active Directory Services administration and management to include design, cleanup and routine maintenance and configuration.

Independent Consultant

Tim Horton, Family Dollar, Target, Hardees restaurant’s, Dollar General Dec 2010 – Aug 2012

Network Engineer

40 hours per week

Worked as a consultant and Network Engineer involved in freelance work. I did work for clients such as Wendy’s, Tim Horton, Family Dollar, Target, Hardees restaurant’s, Dollar General.

this included installing routers and switches, troubleshooting VOIP systems, Cisco Call Manager, Polycom Call manager and Auto Attendants, troubleshooting WAN's, VLANs (data and voice). Writing access list. Upgrading IOs and installing Nexus OS.

Modification and maintenance of Directory Services environment - Active Directory, DNS etc.

Support includes logon policies and scripts for over 600 users, managing DCHP, WINS and DNS servers.

Performed hardware and software installation of Cisco routers for Commercial and corporate clients.

Responsible for the support and maintenance of Directory Services environment - Active Directory, DNS, LDS, and PKI.

Oversee installation, configuration, maintenance, and troubleshooting of end user workstation hardware, software, and peripheral devices

JP Morgan Chase Bank Nov 2009 – Dec 2010

Network Architect/Engineer

40 hours per week

Designed and implemented Network Equipment for Chase Global Networks Worldwide. Included support of Bank Branches, Data Centers and VOIP Call Centers in North America.

Designed IT infrastructure for new bank branches

Prepared and submitted Change management request for my designs which I implemented

Present designs for network revisions successfully to peer reviews.

Designed and built out call centers with Cisco Call manager implementations

Documented network revisions using Visio

Endeavour Telecom, Sault Sainte Marie, MI May 2009 – Nov 2009

Network Engineer

40 hours per week

Field Network Engineer and IT Technician.

Qwest Communications, Columbus, OH Sep 2007 – Mar 2008

Network Engineer

40 hours per week

Network Engineer Specializing in Circuit design and LEC testing with field Technicians such as AT& T, Verizon, and Cable Companies

Daily interfacing with customer and taking customer request (resolving many on the spot (over the phone).

Turn up and configuration of circuits for business customer. Resolving failed circuits and connectivity issues.

Goodwill Industries of Central Indiana, Indianapolis, IN May 2006 – Nov 2006

Network Engineer

40 hours per week

Was responsible for Managing the company network which included Cisco Routers and Switches, Call manager and unity voice mail.

NC Dept. of Health Raleigh, NC Oct 2005 – Feb 2006

IT Project Manager

40 hours per week

Developed and managed complex network and technical IT project plans to completion within time and resource restraints.

IBM Corporation Research Triangle Park, NC May 2005 – Sep 2005

NOC Technician

40 hours per week 10 hour shifts four days on three days off

Team Member responsible for fault Isolation, coordinating vendor activity during maintenance windows, responding to network outages, and assisting customers with connectivity issues in a 24x7 Environment

JP Morgan Chase Bank Columbus, OH Jul 2003 - May 2005

Systems Support Specialist

40hours per week

Team Lead supervising and assisting in the corporate rollout, installation, implementation and administration of Local Area Network, computer systems, operating systems, and servers.

Lead the implementation of 3000 desktops replacements mostly IBM and Compaq Laptop devices. Backing up data, setting up VPN services for mobile users.

Provided desk side support and assistance to over 180 users including more than 100 workstations.

The State of Ohio, Columbus, OH Jun 2003 – Aug 2003

Network Analyst

40 hours per week Two-month contract assignment

Contracted by the State of Ohio for study of continuous availability analysis for the Information Technology Service Delivery (ITSD) at the State of Ohio Computer Center. This took in the entire breadth of the computer center on Kenny Road, Columbus, Ohio. Computers, Servers, Data Center Grade equipment, Power back up and off-site back planning strategies...

National Association of Missing Children Mar 2003 – Jun 2003

Network Technician

25 hours per week average Contracted when needed

Installed computers networks at various police departments throughout the state of Ohio. Cites of Columbus, Dublin, Gahanna, Powell, and other support cells. Integrated the Missing Children’s network with police network resources for finding abducted and lost children.

Volvo Information Technology Lewis Center, OH Jul 1998 – Mar 2002

Systems Administrator

40 hours per week

Network Administrator for Volvo Car Corporations National Parts Distribution Center

Supported Desktop Imaging and VPN configuration of Satellite Locations of Volvo Partners

Assigned to Volvo Parts North America Central Warehouse managing all desktop machines including but not limited to imaging of new and older PC’s with a variety or operating systems and drivers.

Esquire Data Corporation Columbus, OH Apr 1998 – Jul 1998

Network Technician

40 hours per week

Wiring buildings for Telecommunications and LAN Installation

Federal Employment: Department of Defense (DOD)

Defense Information Systems Agency, Columbus, OH Oct 1992 – Nov 1997

Telecommunications Specialist

40 hours per week Temporary employee (renewed consecutively for five years)

Installed Telecom Business Systems. Performed moves, adds, and changes. Programmed telephone software features such as voice mail, Speed Dialing and Automatic Call Distribution Groups. Wired buildings for LAN. Installed and terminated and tested fiber Optics and copper cabling.

Military Record of Service: Honorable Discharge

United Stated Army: Service Dates From 2/9/1976 - 2/9/1979

Military Record of Service: Honorable Discharge

Second Term of Service

United Stated Army: Service Dates From 6/7/1989 - 6/7/1992

Tour of duty Kuwait 8 Months

Awarded South Eastern Asia Service Medal for the Liberation of Kuwait during "Operation Desert Storm", Under General Norman Schwarzkopf

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