David Griggs
Irvine
Summary
Senior IT professional with extensive experience in enterprise infrastructure and technical support. Known for enhancing security measures, improving end-user satisfaction, and mentoring teams to elevate service delivery in dynamic environments.
Overview
1
1
Certification
26
26
years of professional experience
Work History
Deskside Support Engineer
Bell Techlogix
Anaheim
01.2024 - Current
- Delivered advanced onsite and remote technical support in enterprise environment, acting as primary contact for end users and leadership.
- Provide high-level troubleshooting for Windows 10/11, Microsoft 365, VPN, mobile devices, printers, and enterprise applications.
- Deploy, image, configure, and lifecycle-manage desktops and laptops.
- Administer Active Directory and Microsoft Entra ID accounts, permissions, and access controls.
- Support Azure-integrated environments and cloud-based user services.
- Partnered with infrastructure and security teams to resolve escalated incidents and complex technical challenges, ensuring swift issue resolution.
- Train and mentor team members to improve service consistency and technical capability.
- Maintained strong SLA performance and achieved high end-user satisfaction through dedicated support efforts.
IT Security Analyst
Weaver & Tidwell, LLP
Manhattan Beach
01.2022 - 01.2024
- Managed security operations and infrastructure across a multi-site environment supporting thousands of endpoints and users.
- Administered VMware Cloud virtualization and Microsoft Azure environments supporting thousands of endpoints and users across multiple sites.
- Oversaw CrowdStrike endpoint protection and cloud security operations to safeguard organizational assets.
- Administered Microsoft Entra ID and implemented identity governance controls to enhance security management.
- Conducted incident response, vulnerability mitigation, and security investigations.
- Enhanced organizational security posture by implementing proactive controls and continuous monitoring.
- Developed and delivered firmwide security awareness training using KnowBe4.
IT Technician III
OSO Home Care, Inc.
Irvine
01.2019 - 01.2022
- Supported 100 to 150 users and 200 to 300 endpoints across multiple sites, ensuring every employee had access to Windows desktop, iPhone, and iPad.
- Configured and administered IT infrastructure, routing, switching, and wireless solutions, enhancing connectivity and performance across multi-site operations.
- Implemented and managed Meraki mobile device management (MDM) across company iPhones and iPads, and enforced network security controls.
- Delivered Tier III support and contributed to infrastructure modernization initiatives.
- Enhanced system performance and reliability across all sites, contributing to smoother operations and user satisfaction.
Network Administrator
Windes, Inc.
Long Beach
01.2009 - 01.2019
- Owned all network and server infrastructure for 100 to 300 users/endpoints across multiple sites during a long tenure spanning both Windes entities (18 years total).
- Managed routing and VLAN configurations, connecting sites via dedicated fiber into core HP switches with Juniper point-to-point VPN failover during fiber outages.
- Migrated all servers to a VMware cluster, building 3 redundant hosts to ensure service continuity during host failures.
- Built a new VMware cluster when capacity was reached and migrated all services with zero downtime.
- Migrated system environment from Novell/NetWare to Windows for improved file sharing and printing services. from Novell/NetWare to Windows for file, print, and directory services.
- Oversaw transition from in-house BlackBerry Enterprise Server (BES) to BYOD model supporting Apple and Android devices.
User Support Technician
Windes & McClaughry Accountancy Corporation
Long Beach
01.2001 - 01.2009
- Provided enterprise-level user support and systems troubleshooting, enhancing user satisfaction across the firm.
- Minimized downtime through effective problem resolution and proactive support initiatives.
- Led the design and implementation of IT systems that improved operational efficiency and user experience.
- Facilitated large-scale system upgrades and technology transitions, ensuring seamless business continuity.
Skills
- Windows support
- Remote support
- Technical Support Leadership
- Azure administration
- Entra ID Administration
- Active Directory
- Cybersecurity Operations
- CrowdStrike
- Endpoint Protection
- VMware Cloud Management
- Virtualization Management
- Network administration
- Network Infrastructure
- Routing
- Switching
- VLANs
- Wireless
- Incident Response
- Advanced troubleshooting
- Enterprise Systems Administration
- System administration
- Problem solving
- Root Cause Analysis
- Technical documentation
- Effective communication
- Security training
- Windows support
- Remote support
Certification
- Certified Wireless Network Administrator (CWNA)
- Microsoft Certified Professional (MCP)
- CompTIA A+
Personal Information
Title: Senior Systems & Deskside Support Engineer
Technical Environment
Microsoft Azure, Microsoft Entra ID, VMware ESX, VMware Cloud, CrowdStrike, KnowBe4, Endpoint Protection, Identity & Access Management, Windows Server 2022, Windows Server 2019, Windows Server 2012, Windows 11, Windows 10, Active Directory, DNS, DHCP, TCP/IP, VLANs, Wireless (Aruba, Ruckus, Meraki), HP ProLiant, HP ProCurve, Nimble SAN, Nutanix, SonicWall NSA-3600, Pulse Secure PSA-3000, Juniper VPN
Timeline
Deskside Support Engineer
Bell Techlogix
01.2024 - Current
IT Security Analyst
Weaver & Tidwell, LLP
01.2022 - 01.2024
IT Technician III
OSO Home Care, Inc.
01.2019 - 01.2022
Network Administrator
Windes, Inc.
01.2009 - 01.2019
User Support Technician
Windes & McClaughry Accountancy Corporation
01.2001 - 01.2009