Engineer Active Directory
Resume:
DAVID MADIGAN
CERTIFICATIONS
MCSE+I, CCNA, HP BTO OpenView
OPERATING SYSTEMS
Windows Server 2012 R2, macOS, Red Hat Enterprise Linux (RHEL) 7, Cisco IOS ver. 15.5, VMware ESXi 6.0
ENTERPRISE MANAGEMENT TOOLS
IBM Tivoli Netcool/Omnibus v8.1, BMC Remedy ITSM, SolarWinds Server & Application Monitor (SAM), Windows Active Directory 2012, Dell EMC OpenManage Server Administrator 9.1, Cisco Prime, NetIQ Access Manager, Terminal Server 2016, System Center Configuration Manager, LogMatrix Nervecenter,
EMPLOYMENT HISTORY
February 2018 – May 2018 TDS RX30 Orlando, Florida
Systems Analyst (contract)
Defines application problem by conferring with clients; evaluating procedures and processes.
Develops solution by preparing and evaluating alternative workflow solution.
Controls solution by establishing specifications, coordinating production with programmers
Validates results by testing programs
Ensures operation by training client personnel; providing support
Provides reference by writing documentation.
Updates job knowledge by participating in education opportunities; reading professional publications; maintaining personal networks; and participating in professional organizations.
Accomplishes information systems and organization mission by completing related results as needed.
January 2016 – October 2017 SMART CITY NETWORKS Houston, Texas (NRG Park)
IT Technician
Preparing for and during Superbowl LI I worked in NRG Stadium under the direction of the NFL and with the NFL IT team to come up with the fastest, most reliable, stable, and streamlined network solution for the Superbowl.
Contacted new and existing customers such as Houston Livestock Show and Rodeo to discuss their needs, and to explain how these needs could be met by our specific products and services
Maintained detailed documentation through logging of support cases, e-mail, and knowledge base articles for client and internal use.
Owned and addressed client needs and product issues from inception to resolution.
Worked collaboratively with clients, team members, implementation, consultants, and resources across the company to achieve desired results.
August 2014 – December 2015 COMCAST XFINITY Houston, Texas
Remote Services Technician (contract Support.com)
Provide second tier remote technical support including troubleshooting issues with Wi-Fi, modems, wireless gateways, phones, smart devices, computer hardware, network/internet connectivity, email, and software applications as well as completing client requests for password and user account administration based on documented procedures
Manage multiple cases at one time
Ask and gather intelligent questions about the client’s issue and accurately record in ticketing system
Properly dispatch field technicians as necessary for service that exceeds remote services capability, line issues, replacement of Wireless Gateways, splitters, modems, or extenders or any other issue that could impact customer satisfaction.
Remotely setup and configure new wireless gateways and modems for clients based on documented procedures
Remotely troubleshoot, repair, and/or upgrade client computers based on documented procedures
Create and maintain client-related documentation
June 2013 – April 2014 ICTX WAVEMEDIA Houston, Texas
Systems Engineer
Used Active Directory to ensure proper management of systems, software, and services.
Resolve complex issues and conduct root cause analysis.
Monitored and responded to Solar Winds alarms.
Analyzed & Monitored Virtualization Data using VMware ESX.
September 2012 – June 2013 ASHTON GARDENS Houston, Texas
Systems Manager
Responsible for management and maintenance of corporate network services using Active Directory.
Tasked with desktop support issues
Troubleshoot and resolve remote customer issues over the phone.
Designed and implemented new backup solution utilizing VMware ESXi virtualization and Windows NT replication.
June 2011 – August 2012 SANFORD-BROWN COLLEGE Houston, Texas
IT Director (contract)
Responsible for all IT issues campus wide
Streamlined Active Directory network infrastructure by replacing legacy hardware, acquiring additional bandwidth, and utilizing cutting edge technologies such as VMware ESXi.
Implement desktop imaging solution utilizing Windows 2008 R2 Server and Tiviloi Provisioning Manager.
Resolve network equipment power issues by acquiring dedicated circuits, additional UPS’s, and retiring old equipment.
Installed independent cooling solution in server room to create proper operating environment for network hardware.
Configure phones, set up user access, computers, voice mail, and email using CISCO Unified CM Console, Communite, Active Directory, and Microsoft Exchange 6.
Designed and configured new computer labs consisting of 30 workstations providing printers, email, and internet access for students as well as adding additional room and software for new classes.
December 2007 – June 2011 MEDIDATA SOLUTIONS Houston, Texas
Systems Engineer
Ensure healthy operation of VM servers in NOC via Active Directory and troubleshoot if issues arose.
LAN/WAN Troubleshooting
Monitor Network from NOC for hardware, software, and performance issues using VMware ESX and Active Directory.
Ensure that LAN/WAN devices are properly supported.
Work w/ Network Support so that alerts/outages are resolved in a timely manner.
Document and improve existing NOC processes.
Define and implement key processes that improve operations ability to deliver system availability
April 2005 - December 2007 SUNGARD Austin, Texas Data Center Operations Engineer
Rotate inbound and log/document outbound tape backups for storage at offsite Iron Mountain facility.
Monitor LAN/WAN connections using such diagnostic utilities as Net Cool, Site Scope, and Cisco tools.
Log daily, weekly, and monthly performance of customers bandwidth uses and needs.
Correspond with customers to keep security and personnel access to Data Center up to date.
Perform remote hands tasks for customers such as troubleshooting hardware and software issues, faulty servers, switches, and routers.
Secure the Data Center using video surveillance, access logging software, and lock and key approach.
July 2004 – April 2005 DELL Austin, Texas
Windows 2003 x64 Enterprise Systems Test Engineer (contract)
Step through test scripts to identify fixes and expose flaws in Dell print drivers.
Probe for failures in Dell Openmanage and On Line Diagnostic utlity in Linux 4.0 EL and Windows 2003
Discover bugs in Windows 2003 64 bit extended.
Document and replicate failures in 64-bit Windows 2003 on Dell pre-production Enterprise servers.
Prepare test bed units from component level on up.
Follow step by step instructions to test System Units for compatibility with patches and fixes to Operating System.
Discuss level of severity of issues with software engineers working on fixes.
October 2003 – July 2004 HEWLETT PACKARD Houston, Texas
Network Analyst (contract)
Analyzed LAN/WAN, hardware and software issues, captured configuration logs and used Cisco's diagnostic tools for issues related to TCP/IP, ACL, and Network Protocols.
Responsible for troubleshooting and resolving network problems and abnormalities
Supported the Wide and Local Area Networks
Coordinate troubleshooting of network outages between Telco and HP.
Work w/ all levels of Network Support to confirm and fix faulty circuits worldwide.
October 2001 – October 2003 TMANAGE Austin, Texas
NOC Tech Support
Provided Tier 2 NOC and Desktop Support for all home office customers.
Worked w/ team to design a more streamlined approach to Desktop management and support.
Implemented procedures that increased visibility and productivity of Network Operations Center.
Real "hands on" training directly under 2 CCIE's.
Provided assistance in shifting company focus into Enterprise Management
August 2000 – September 2001 VERIZON Austin, Texas
Network Systems Engineer Tier 2 (contract)
Support Blue Cross Blue Shield of Ca. (Wellpoint’s) corporate infrastructure at Verizon’s Austin Network Operations Center.
Monitor and troubleshoot Windows NT Servers, Novell Servers, Citrix Winframe “dial-up” servers, frame relay circuits, and point-to-point circuits, using such tools as Visual Uptime ASE, HP Open View, Cisco Secure, Cisco Works, Windows NT Admin Tools and Novell Command Center.
Upgrade Cisco IOS on all routers and switches and work with Cisco TAC investigating configuration issues.
Liaison to local field engineers aiding in communication with Local Exchange Carriers and Vendors.
Devised naming convention for servers, routers and switches and assigned IP addresses and subnets to all devices added to corporate network using SolarWinds 2001 Professional and Cisco DNS.
October 1999 – August 2000 TELLAIRE CORP. Austin, Texas
NOC Consultant
Develop plan to bring Optical Networking into commercial telecommunications by cheaply bypassing traditional copper local loop via Laser and Fiber Optic medium.
Responsible for NOC development and management.
Meet w/ vendors, purchase proper hardware, provision rooftop clearance, and building management approval.
Install and align Lasers on rooftops in Austin downtown area, configure and install Switch equipment, manage Electrical and Fiber Optic technicians, and consult on fast Ethernet switching solutions.
February 1999 – October 1999 IXC COMMUNICATIONS Austin, Texas
Network Operations Engineer Level 2
Provision “turn key” solutions for customers riding IXC’s nationwide fiber network.
Monitor switch facilities and co/lo alarms via Newbridge 46020 Mainstreet network management tool.
Troubleshoot performance issues from switch to CSU and test bandwidth per customers’ request.
Work hand in hand w/ other Telco’s troubleshooting configuration and performance issues.
June 1998 – January 2000 STATE FARM INSURANCE Bloomington, Illinois
Network Systems Engineer (contract)
Built the largest private network on the planet to date consisting of some 18,000+ CISCO Routers, 17,000+ NT Servers and over 50,000 NT workstations.
Developed NOC real-time monitoring and support strategies using HP Openview, CISCO Works, and Seagate Nervecenter.
Supported ATT, IBM, WANG, and local telco field technicians.
Consulted ATT, CISCO, and Microsoft on resolving technical limitations and network stress testing.
November 1997 – May 1998 CONOCO CORPORATE HEADQUARTERS Houston, Texas
Network Software Developer (contract)
Migration project from Windows 95 to NT 4.0.
Developed application packages with Seagate WinInstall ensuring reliable future deployment of network installs and baseline images.
Created NT 4.0 and 95 operating system baseline for unique hardware configurations.
Responsible for certification of deliverables, image replication, and procedural streamlining
Supported recently migrated users, troubleshooting network login, e-mail connectivity issues, and network installs.
November 1996 – November 1997 NATIONAL-OILWELL Houston, Texas
LAN Systems Analyst
Implemented SMS 1.2 on a Digital 6/333 Alpha server which installed SMS 1.2 clients locally and enabled end user support
Troubleshooting connectivity issues by talking remote users through router, hub, and ethernet installations over the telephone.
Upgraded all PC’s, both at Corporate and in the field, from Win 3.x to Windows 95 or NT 4.0.
Built and configured PC clones and laptops for LAN functionality and remote capability.
Configured multiple user PC’s for WAN connectivity.
April 1996 – November 1996 KENT ELECTRONICS Houston, Texas
Network Administrator (contract)
Upper level systems administration, network troubleshooting, and desktop support.
Responsible for remote administration and configuration of client/server WAN via SMS providing efficient high-level tech support to end-users.
Field all telephone inquiries applicable to Network Administration, MS Exchange 4.0, and Desktop applications.
Review and implement proposed resolutions for all PC and Network inquiries both in house and in the field.
October 1995 – March 1996 COMPAQ COMPUTER CORPORATION Houston, Texas
Software Engineer Level 2 (contractor)
Tested Compaq “in house” and “third party” beta drivers for Windows 95 hardware compatibility.
Assistant Manager of Compaq’s SSIT (Systems Software Integration and Testing) for Presario line.
Evaluated upgrade and installation processes of Windows 95 on emerging Presario platforms.
Wrote and tracked technical reports detailing problem isolation and resolution.
February 1995 – October 1995 COMPAQ COMPUTER CORPORATION Houston, Texas
Hardware Graphics Driver Tester (contract)
Tested beta drivers developed for pilot hardware; mainly Matrox video boards.
Reported compatibility problems and issues causing driver conflict.
Wrote product evaluation reports explaining in detail what the problem is and how to reproduce it.
Worked in conjunction with Microsoft beta testing “Chicago” producing technical reports detailing driver compatibility issues with Compaq hardware.
EDUCATION
Austin College, Sherman, TX
(President Chi Delta Eta Fraternity)
- Bachelor of Arts in Psychology – May 1994
- Freshman Representative of Student Assembly
- Peer Counselor and member of Organization of Student Leaders
- Austin College Swim Team
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