Systems Administrator Technical Support

**RAOUL EARLE OSTROM**

Victorville, CA ***** Cell: 818-***-**** Email: *****.******@*****.***

**PROFESSIONAL SUMMARY**

Experienced and detail-oriented Senior Systems Administrator with over 20 years of leadership and technical support experience. Adept at managing complex IT environments, ensuring business continuity, and driving successful project implementations. Proficient in systems administration, IT security, backup and disaster recovery, and user support. Known for excellent communication skills, strong problem-solving abilities, and an ability to collaborate with cross-functional teams to enhance operational efficiency.

**TECHNICAL SKILLS**

- **Operating Systems**

Windows Server 2008 R2, 2012, 2016, 2019, 2022, VMware ESXi, MS Hyper-V, Windows 10/7/XP

- **Virtualization & Cloud**: VMware vSphere 6.5, VMWare ESXi 6.5, Nutanix, Google Cloud, Microsoft 365, Azure AD

- **Networking & Security**: DNS, DHCP, WINS, Active Directory, LDAP, SNMP, Cisco Meraki, Sophos Antivirus, Sophos Firewall, Nexpose, SolarWinds IPAM, PRTG Network Monitor

- **Backup & Recovery**: NetBackup, Backup Exec, EMC Data Domain, Data Protection & Restoration

- **Ticketing & Support**: RemedyForce, Peregrine, dBOSS, Service Center, Manage Engine, ServiceNow

- **Software**: Microsoft Office Suite, Oracle EBS, AutoLabel 14, Sumimark 4.0, Adobe Acrobat DC, Solidworks, AutoDesk

- **Other Tools**: Exclaimer Cloud, PDQ Inventory & Deployment, TeamViewer, IIS, SQL, SharePoint, RingCentral, Intune

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### **PROFESSIONAL EXPERIENCE**

**Certified Aviation Services** – Ontario, CA

**IT Manager** *Dec 2021 – June 2024*

Managed IT operations across multiple platforms to ensure system integrity, security, and compliance.

- Administered Microsoft 365 accounts, GPO, VMware AirWatch MDM, Apple Business Manager, and Google Cloud environments.

- Managed server configurations and data backup/restoration for Windows Server 2012–2022.

- Created and enforced IT security policies, ensuring SOX compliance.

- Oversaw hardware/software maintenance and renewals, including mobile devices via Verizon Business Portal and RingCentral.

- Administered Barracuda Email Gateway, Cisco Meraki, and Exclaimer Cloud for email security and management.

**Banc of California** – Santa Ana, CA

**Systems Administrator** *June 2021 – Oct 2021*

Supported infrastructure and applications, ensuring security and data recovery protocols.

- Created VM templates and restored VMs on VMware ESXi 6.7.

- Managed Windows Server installations (2012, 2016, 2019) and backups.

- Administered LastPass password management and IT security policy enforcement.

- Supported FISERV and Fenero applications and remediated security risks via Rapid7.

**Tri-Star Technologies** – El Segundo, CA

**Sr. Systems Administrator** *Aug 2019 – July 2021*

Led administration of virtualized and cloud environments, focusing on system availability and security.

- Managed Nutanix-based infrastructure, including backup monitoring and firmware updates.

- Administered Azure Autopilot, Intune, Office 365, Active Directory, and Azure AD environments.

- Performed security patching, software deployments, and IT asset remediation using Nexpose.

- Managed IP subnets and network devices via SolarWinds IPAM and PRTG.

**The Skillset Group (Carlisle Interconnect Technologies)** – El Segundo, CA

**Sr. Systems Administrator** *Mar 2018 – Mar 2020*

Focused on IT operations, infrastructure optimization, and application support for a fast-paced environment.

- Managed Nutanix, VMware ESXi, and Office 365 environments.

- Deployed mobile devices via Intune and performed user administration in Active Directory and Azure AD.

- Oversaw software deployments and inventory management with PDQ Inventory/Deploy.

- Conducted IT security assessments and ensured compliance with internal policies.

**TEKsystems (Assigned to Monogram Aerospace Fasteners)** – Commerce, CA

**Windows Systems Administrator** *Oct 2015 – Jan 2018*

Provided systems administration and support for enterprise-wide systems and infrastructure.

- Led Active Directory administration, group policy creation, and troubleshooting.

- Managed migration of email accounts to Office 365 and configured email profiles for end users.

- Administered SharePoint, supported hardware installations, and documented IT processes.

**TetraTech Technical Services** – Pasadena, CA

**Lead Windows 2000 IT Server Specialist** *Nov 2000 – Aug 2001*

Managed large-scale migration and implemented Windows 2000 Active Directory across the enterprise.

- Designed and implemented Active Directory structure, including Group Policies and OU management.

- Migrated 5000+ user accounts, DNS, DHCP, WINS, and Exchange Servers.

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### **EDUCATION & CERTIFICATIONS**

- **Certificate in Electronic and Computer Engineering** Glendale Community College, 1998

- **A+ Hardware Certification** Integrated Digital Technologies, Inc., 2000

- **Microsoft Certified Systems Engineer (MCSE)** Integrated Digital Technologies, Inc., 2001

- **High School GED** La Puente High School, 1981

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### **ADDITIONAL INFORMATION**

- Extensive experience working with ITIL frameworks and service management tools.

- Proven ability to lead cross-functional teams and manage large-scale IT projects.

- Strong troubleshooting and problem-solving skills in both hardware and software environments.

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### **KEY STRENGTHS**

- IT Infrastructure Management

- System and Network Security

- Virtualization and Cloud Platforms

- IT Policy and Compliance

- Backup and Disaster Recovery

- User and Permissions Management

- Technical Documentation & Reporting

- Vendor and Stakeholder Collaboration

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### **References Available Upon Request**

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