Charles A. Mayfield
Carlsbad, CA 92010
Home 442-***-****
Cell 510-***-****
*******@*************.***
SUMMARY
Hands on IT Executive with over 20 years of technical and security experience in Windows, VMWare, Unix, Linux, Cisco and PBX VoIP/SIP technologies. I have an arsenal of technical resources for solving ANY technical problems. Vast experience as an IT Director, Technical Lead, Technical Analyst, Consultant and Project Manager (hands on). Specialty in troubleshooting connectivity, VPN and security issues within networks and infrastructure architecture. Great success working closely with vendors, peers and executive staff, both technical and non-technical. Extensive experience in designing and securing networks. Configuring and building servers, clusters and network components for optimal performance, redundancy, business continuity and disaster recovery. Virtualization of systems. Implementation of complex phone systems and call centers.
TECHNICAL SKILLS
Operating Systems: MS Windows all desktop and server versions, NT Clustering (multiple platforms), DFS/DFSR Server 20xx, Citrix XP and PS4, MS Terminal Server, UNIX, Solaris UNIX (Intel and Sun platforms), and Linux.
Network Protocols: TCP/IP, SIP, UDP, IPX/SPX, SAP, DLC, NetBEUI, SNMP, PPP, L2TP, IPSEC, SLIP, ARP, RARP, RIP, OSPF, BGP, SMTP, POP3, Ethernet, Token Ring, FDDI, and ATM
Hardware Systems: Force10, Cisco (routers, switches, PIX), Cisco Aironet wireless 802.11ABG, Sonicwall, Watch Guard, Netscreen, Cisco, Cabletron, 3Com, Farallon, Netopia, Hubs, Switches, CSU/DSU, Routers, Sun Server, DEC Alpha, Hewlett Packard-NetServer, Compaq Proliant, Dell, IBM RS/6000, Compaq, HP, IBM, Dell, Toshiba, and Gateway.
SANS: HPE, Dell EMC/Compellent, RamSan, HCI, Nutanix, IoT
Software: VMWare VSphere, DOS Scripts, ISS, SMS,SCCM,WSUS, Arcserve (enterprise), BMC Patrol, Numara, IP Monitor,Cacti, ELM, Veritas, Partition Magic, Ghost, Hyena, MS IIS, Exchange Server 5.5-20xx, MS Outlook 20xx, MS Office 95-20xx, Office 365, SQL 6.5-2008, Rumba, Client Access, ACAD, 3D Studio, C, Fortran, Assembler, PLI, Pascal and BASIC.
EXPERIENCE
(Self) IT Consultant 05/2013-Present
Work with company owners and give recommendations for security and performance improvement
Select the best technologies to improve performance and allow for growth
Find best cost for purchase and implementation of product
Make sure network at home office and office is secure and recognize threats and weaknesses
Train users for basic troubleshooting to minimize down time
Create automated backup strategies to minimize data loss potential
Setup systems for remote support when necessary
Make sure all systems are running at optimal efficiency
(Adidas-Taylormade) Sr. IT Consultant 05/2017-9/2017
Give recommendations for security and performance improvement
Select the best technologies to improve performance and allow for growth
Find best cost for purchase and implementation of product
Assist with Technology divestiture of Adidas and Taylormade
Redesign architecture for Taylormade after divestiture
Create plan for Disaster Recovery and Business Continuity
Setup systems for remote support when necessary
Improve monitoring and alerting on system issues
Assist with new PBX design and implementation
(Wrike) Sr. Systems Administrator 1/2016-6/2017
Manage applications salesforce, outreach, cloudbased PBX
Pick Technology direction for company
Develop standards, policies and process
Secure and standardize environment of MAC and PC
Implement business continuity plan for company
Manage outside vendors
Develop disaster plan for company
Train users for basic troubleshooting to minimize down time
(SolarCity) Director of Information Technology 02/07-05/2013
Meet with Founder to determine technology choices and company direction
Architect infrastructure to support company’s ability to double per year
Manage Multi-Million dollar budget for company
Secure company wireless and data access
Provide Training and 3rd level support for my IT Staff
Design and implement windows infrastructure for 3000+ nodes
Multi-Tiered Network environment up to and including Ethernet over wireless
Build from the ground up VoIP/SIP Telephony solution for 1200 users and 29 remote sites
Design and implement cellular phone and air card deployment for company
Negotiate all software and hardware contracts
Manage, Service and design Multiple remote locations
Design and implement Disaster Recovery program and business continuity for company
Setup remote access VPNs and Firewalls for main and satellite offices
Manage Staff, Manage Budget for company growth
Architect SAN and virtualization design for company extreme growth
Virtualize all systems including Microsoft Dynamics and Exchange 2010
Implement 3 different types of Sans utilizing ISCSI and Fiber technology
Implement and Manage VMWare clusters on servers and blade servers
Implement black berry enterprise server integrated with exchange 2007
Moved entire company infrastructure twice due to extreme growth
Independent Consultant 02/06-02/07
Nru Systems Consultant for Self
Windows 2003 and Exchange 2000 and 2003
Technology decision maker and infrastructure architect for multiple companies
Design/Implement complete infrastructure solution suit customer needs
Manage and Service Multiple customer accounts
Setup Disaster Recovery program for multiple companies
Setup remote access VPNs and Firewalls
Day to day support of multiple companies
Create customized scripts for automated processes
Technology Research Consulting 10/05-01/06
IT Manager
Migrate from Windows/Exchange 2000 to 2003 in a 30 host multi-hosted environment
Managing All high level projects
Maintain/create VPN and PPP connections between remote offices
Implement monitoring system for system failure alerts
Mail Gateways (GFI) and Trendmicro AV
Train JR Techs for troubleshooting techniques
Troubleshoot phone issues at car dealer sites
Implement Cisco IP phones to work at home sites via VPN connectivity
Adjust hosted environments for specific customer needs
Documentation for current system design
Redesign network and move existing infrastructure to a collocation facility
Assist the Support Desk with imaging and ghosting
Configure WiFi units for Customer deployment
Secure network and Exchange systems from attacks
Create secure and hardened server / desktop images
Security Audits of systems and infrastructure
Case Central 06/05-10/05
Senior Systems Administrator
Managed/maintained/owned all aspects of Metaframe XP Feature Release 3 and Presentation Server 4 running on Windows 2003
Create Redundant Citrix gateways for failover behind local director
Custom configuration of Nfuse server and WebInterface
Setup webconsole to allow ease of troubleshooting by customer care center
Create custom applications to fit specific customer needs
Documentation for current system design
Redesign and update new Citrix system to Presentation Server 4
Assist the Customer Care Center with imaging and ghosting
Assist with the network for implementation of Cisco WiFi
Secure network and Citrix systems from hostile host
Create secure and hardened server / desktop images
Security Audits of systems and infrastructure
Independent Consultant 07/04-06/05
Nru Systems Consultant for Self
Windows 2003 and Exchange 2000 and 2003
Security and Virus recovery and removal
Setup Disaster Recovery program for multiple companies
Setup remote access VPNs and Firewalls
Day to day support of multiple companies
Create customized scripts for automated processes
Support for Novell, Lotus Notes and Citrix Servers
Webnettrak IT Director 07/04-01/05
Hands on IT Director
Lead IT direction and decisions for company
Follow budgetary constraints to develop the best IT solutions
Management and design for company infrastructure
Develop secure and remote connectivity for external customers
Management and design of Disaster Recovery program
Oversee all IT aspects and drive decision making
Setup all servers for content and external user connectivity
Kaiser Permanente (Consultant through IGate.com) 03/04-06/04
Senior Systems Administrator
Build ghost windows server and create PC Scripts for rapid deployment of windows machines. Develop/update troubleshooting skills of technicians that are under me. Create documentation for process and procedures that currently don’t exist. Quickly diminishing ticket count and service request. Served as final escalation point for difficult problems. Used SMS tool to resolve remote user issues. Create and verify that the image for the roll out to multiple offices is good.
Kaiser Permanente (Consultant through IGate.com) 11/03-01/04
Senior Systems Administrator
Quickly diminishing ticket count and service request for Kaisers windows environment. Training Jr. Level technicians. Worked on special and (hard to solve) projects. Used SMS tool to resolve remote user issues. Verify that the windows image for the roll out to multiple offices is good. Maintain management roll when manager is unavailable. Solving multiple issues within: Mainframe (Extra Client), Lotus Notes, Ghosting, Mcafee AV (EPO), Dell Desktops and cisco switches. Troubleshoot Citrix server connections and configurations.
Independent Consultant 05/03-11/03
NRU Systems Consultant for self
Worked on Cisco network and NT support issues for small travel agency
Recovered data for chiropractic office off of failed HDD
Rebuilt windows system and recovered data for independent appraisal company
Restored DSL network outage for independent Uhaul company
SonicWall 07/01-05/03
Sr. Systems Administrator/Support Desk Manager
Responsible for global support for publicly released and beta products. Internal and external security penetration testing, intrusion detection methodologies and AV implementation. Windows 2k System performance and uptime monitoring. Packaged software for updates and new installs via Active Directory using MSI and Wise installer. Develop Hardened Windows 2k System images for server (500+) and desktops (500+) deployment on Dell Hardware. Maintained AVAYA phone system. Network maintenance and troubleshooting. Setting up GLB’s, VPN’s, VLAN’s and ACL’s for ensuring redundant secure and direct connectivity. Setting up Multiple Win2k Clustering environments for Seibel and SQL using Dell Servers. Manage internal support desk and Active Directory structure and resolved escalated issues. Worked within group to develop and maintain Disaster Recovery plan.
Digital Island Inc. 02/00-05/01
IT Manager
Lead and direct IT solutions for internal company growth.
Integral part of IT decision making for AV, Servers and internal company IT
Complete systems monitoring and troubleshooting using BMC.
Implement and create a stable, secure and single image for multi-hardware platforms.
Oversee all IT actions and direction for internal support desk
Created PC Batch Scripts for updates to host files.
Responsible for Windows 2000 software deployment to desktops using AD and MSI Installer.
Managed integration and development of exchange 2000 deployment.
Provided third and final escalation point for unresolved Help Desk issues.
Built and maintained 100+ Compaq servers for entire company.
Deployed wireless (802.11b 128 bit wep encryption) networking to multiple sites.
Provided training to technicians on rollout procedures and problem solving.
Responsible for maintenance, light trouble shooting and adds and changes using Cisco 5000, 6000, 7000 switches and routers.
Preformed internal Unix System Administrator functions and Unix monitoring and performance with BMC Patrol.
Kaiser Permanente (Consultant through Analysts International) 09/99-02/00
Project Manager
Project Manager for Y2K remediation of Kaiser systems.
Used EDM for software deployment to 30,000+ windows nodes.
Facilitate and Drive plan for Y2K system remediation security, AV, and replacement process.
Managed and trained a team of 20 technicians for rollouts at different sites.
Resolved and documented technical and security issues caused by the remediation process.
PMI Mortgage Insurance 03/97-08/99
Senior Systems Engineer
Lead Engineer for deployment and standardization project to remote offices using SMS for package distribution. Second level Sun Unix administration. Provided retrofit and modification of a multiple topology (Ethernet and token ring) secure network utilized for software development. Led various system upgrade projects (Unix, Cabletron, Cisco, Desktop). Designed hardware specifications and implemented a technical environment for Web based applications using Netscape enterprise. Provided documentation for training and project planning for technicians and end-users. Installed and configured MS Exchange Server 5.5 and Outlook 98 client in field offices. Lead Engineer for IBM AS/400 client/server network upgrades using RUMBA (95/NT) and EXTRA (DOS). Installed and maintained Lotus Notes, GroupWise & Office 97/95 software products company wide. Responsible for designing and maintaining the company standards including software implementation. Performed assembly, testing, trouble shooting and deployment of Compaq servers and workstations.
MCI (Consultant through Volt) 06/96-03/97
Research and Development Engineer
Deployed RS 6000 and DEC Alpha servers in wiring centers nation wide. Project Manager for equipment and software procurement on expansion project. Consultant for MCI's Development group for servers and workstations using NT 3.51 & 4.0 (800 nodes), SCO-5/AIX UNIX and Novell 3.x-4.x environments. Involved in the design phase of VRU applications utilizing multiple T1’s for inbound calls and outbound bridging. Investigated and maintained T1 circuits and Dialogic cards for telecom software applications. Provided training, documentation and third level support for system development problems with hardware and software. Worked with third party vendors in updating software for optimal system performance.
Levi Strauss and Company (Consultant through PC Processors) 03/96-06/96
PC/LAN Technician
Configured routers, computers and printers to work in an NT or Novell environment. Performed technical analysis for a computer deployment project. Provided day-to-day system support to end-users.
The Computer Doctor 10/95-03/96
Founder, Computer and Network Consultant
Performed equipment procurement and consultation for various clients in California and Arizona. Constructed and installed computer network centers in Southern and Northern California. Set up, designed, diagnosed and repaired networks for small to medium offices.
UPS 05/94-10/95
Information Systems Technician
Project Leader for the configuration of remote site shipping hubs. Installed HP network servers utilizing Novell NetWare, onto a Token Ring network environment. Maintained IBM based PC’s that utilized DOS, OS2 and Win 3.x. Provided customer training and technical support. Technical advisor for software and NOS program development for integrated UPS systems. Provided technical advice to senior management in cost planning for future system procurement.
ICF Communications 02/93-05/94
Voice and Data Technician
Team lead for voice and data communications team for Wells Fargo and Bank of America maintained over 10,000 nodes. Wiring and punch downs for large data and voice systems. Installed and maintained ROLM, Eagle, and Northern Telecom Meridian phone systems.
EDUCATION
Studied Electrical Engineering and Computer Science,
University of Arkansas at Fayetteville 1989-1991
University of Arkansas at Little Rock 1987-1989
Eastern New Mexico University 1985-1986
MILITARY SERVICE
United States Air Force Veteran Mar ’84 – Oct ‘87
References Available upon request