John Grizzaffi
Lewisville,TX
Summary
Knowledgeable IT Manager oversees technology deployment and maintenance. Instructs and leads IT staff members in support of hardware, software and networking infrastructure. Actively works with executives to determine and implement tech needs. Manages technology strategy, training and documentation.
Overview
29
29
years of professional experience
Work History
IT Manager, Lead Instructor
Eagle Gun Range
Lewisville, TX
10.2012 - Current
- Responsible for all systems including servers, network infrastructure and security, web development, social media marketing, graphic design, and supporting all clients
- Developed custom IT solutions to address specific business needs, driving operational improvements and cost savings.
- As lead instructor it is my job to develop class material and train other instructors to deliver material, I am responsible for scheduling and marketing for all classes
Systems Administrator II
Oracle
Austin, TX
10.2007 - 10.2012
- Support product development systems and infrastructure
- Accountable for Sun lab with 25 racks of servers, backup systems, storage systems, layer 2 and 3 network switches
- Delivered Tier 2 and Tier 3 support for problem identification, diagnosis and issue resolution.
- In addition to Sun lab was a member of a team of 6 SAs that support the data center with over 3,000 racks of servers, various storage devices, virtualization technologies, source control, secure cloud, public cloud and every OS and app available; all used for development, testing, R&D, QA, and building proof of concept systems.
- Ensured optimal server uptime, monitoring system health and performing routine maintenance.
Systems Engineer
Trinity Real Estate Solutions
Dallas, TX
12.2004 - 02.2007
- Handled PC, network infrastructure, server, and application support for 40 - 50 user network
- Created all network documentation, designed server room, setup group policies, VPN connections to multiple co-locations and for remote users, initialized all servers and implemented Cisco and Linux based firewalls and routers for perimeter security, content filtering, intrusion detection, and network performance monitoring
- Implemented IT infrastructure upgrades, ensuring minimal downtime during transition process.
- Executed help desk, change management, source code management and VMware solutions
- Effectively performed nationwide phone support for more than 6,000 inspectors and all clients.
COO, Treasurer
Five Star Solutions LLC
Frisco, TX
01.2002 - 12.2004
- As one of three owners, I was responsible for sales, marketing, bookkeeping, labor, and scheduling
- I was first contact with all potential customers and it was our responsibility to show them how we were the right solution for them
- Troubleshot and designed network, and data systems solutions
- Over 50% of business was residential entertainment systems; including running speaker wire and mounting projection TV systems.
Network Consultant
John Wright Enterprises
01.2000 - 05.2002
- Primarily specialized in office moves, migrations and upgrades
- Upgrades included not only software, but network architecture
- Assisted in development of disaster recovery plans, ensuring minimal impact on business continuity during unforeseen events.
- Initiated and completed all aspects of new office setup, from pulling cable to punching down 66 blocks
- Implemented backup systems to protect critical data from loss due to hardware failures or natural disasters.
Network Administrator
Auto One (Cal-Fed)
Dallas, TX
05.1997 - 12.1999
- Conversion from Novell 3.11 to 4.11
- Upgrade GroupWise 4.6 to 5.2
- Conversion from GroupWise to Exchange 5.5
- Implemented TCP\IP to replace IPX\SPX environment
- Conversion of loan origination system from Coin to Appro 4.6
- Maintained all servers and network devices
- Monitored network traffic and maintained network security
- Only NT Domain Admin for 6 offices
- Responsible for 3rd level support of desktop issues
- Installed, configured and supported local area network (LAN), wide area network (WAN) and Internet system.
Systems Engineer
Intelinet Systems
Richardson, TX
01.1995 - 03.1997
- On-site PC, server, and Network troubleshooting and repair
- Physically set up new servers and trouble-shoot existing server hardware issues
- Implemented IT infrastructure upgrades, ensuring minimal downtime during transition process.
- Implemented new software, managed rollouts, initiated new services, and migrations
- Created disaster recovery programs, redesigned server rooms and negotiated solutions based on client needs.
Education
Microsoft Certification \ Certified Novell Enginee -
06.1996
Skills
- Virtualization: VMware, Oracle VM, Virtual Box, Hypervisor
- Unix: Solaris, BSD, AIX, HP-UX
- Microsoft: All desktop OS (30 - Current), All server OS (NT 40 - current), Active directory, Group policies, All office products including Project and Visio, Server apps including Exchange, SQL server, IIS, and SharePoint
- Linux: All major distributions, Apache, MySQL, PostgreSQL
- Network: Cisco IOS, Cat-OS, IP-tables SNORT, SQUID
- Data center technologies: PXE, jump start, kick start, Puppet, various imaging techniques, hardware consoles, terminal servers and many remote administration tools
- Oracle: DB, OS, VM, apps
- VoIP, and Storage technologies
- Web development: WordPress, DIVI, HTML\CSS, JAVA Script, Ruby, Python
- Social Media Marketing
- My management proficiency is reflected in my ability to navigate challenges, inspire teams, and deliver results
References
Available upon request
Timeline
IT Manager, Lead Instructor - Eagle Gun Range
10.2012 - Current
Systems Administrator II - Oracle
10.2007 - 10.2012
Systems Engineer - Trinity Real Estate Solutions
12.2004 - 02.2007
COO, Treasurer - Five Star Solutions LLC
01.2002 - 12.2004
Network Consultant - John Wright Enterprises
01.2000 - 05.2002
Network Administrator - Auto One (Cal-Fed)
05.1997 - 12.1999
Systems Engineer - Intelinet Systems
01.1995 - 03.1997
SMU School of Engineering And Applied Sciences - Microsoft Certification \ Certified Novell Enginee,