Brett D’Ambrosia
Downers Grove,IL
Summary
Systems Engineer with proven expertise in managing complex IT infrastructures. Focus on enhancing operational efficiency through proactive troubleshooting, automation. Committed to delivering high-quality support and improving client outcomes in dynamic environments.
Overview
1
1
Certification
13
13
years of professional experience
Work History
System Analyst II
Sentinel Technologies
Downers Grove, IL
12.2021 - Current
- Maintained and supported multi-client environments to ensure optimal performance and reliability.
- Enhanced issue resolution through proactive troubleshooting and monitoring of Windows Server 2008 R2–2022 environments.
- Managed Active Directory, group policy, domain controllers, file servers, and print servers.
- Administered Microsoft 365 Exchange Online and Microsoft Entra ID environments.
- Executed enterprise backup and recovery operations using Veeam to safeguard critical data.
- Created PowerShell scripts for automation, reporting, and administrative tasks, improving operational efficiency.
- Supported endpoint security platforms, including Cylance and Cisco AMP, to enhance security posture.
- Provided training and mentoring support to help desk agents to foster skill development.
- Developed and maintained customer relationships to ensure customer satisfaction.
Systems Engineer
SWK Technologies
Hanover, NJ
02.2021 - 11.2021
- Managed Active Directory, Microsoft 365, and Azure Active Directory environments
- Supported Exchange Online administration and Microsoft 365 services
- Supported over 350 client systems in a managed services environment
- Successfully maintained and supported large multi-client environments
- Enhanced issue resolution through proactive troubleshooting and monitoring, reducing downtime and improving client satisfaction
- Resolved complex issues related to Cisco Umbrella, SonicWall, Aruba, Citrix, and VPN, enhancing client connectivity and security
- Administered Windows Server 2003–2012 R2 environments for multiple clients, ensuring optimal performance and uptime
IT Manager
Charter Steel Trading Co., Inc.
Chicago, IL
08.2019 - 03.2021
- Managed IT infrastructure across 3 company locations
- Administered Hyper-V, Active Directory, Office 365, Veeam, and Barracuda environments
- Managed networking infrastructure including routers, switches, access points, and VPN connectivity
- Supervised IT operations and support staff, ensuring consistent service delivery across multiple locations
- Managed vendor relationships and technology planning, overseeing budget allocation to align IT resources with strategic goals
- Conducted monthly security awareness and end-user training sessions, enhancing organizational security posture through improved user knowledge
- Improved infrastructure reliability and standardization across multiple locations
IT Manager
Acme Alliance, LLC
Northbrook, IL
05.2018 - 07.2019
- Managed Windows Server, Active Directory, Office 365 environments to ensure stable operations and user access
- Supported network infrastructure, including routers, switches, wireless access points, and VPNs, to maintain connectivity across multiple locations
- Maintained Barracuda web filtering and Proofpoint Essentials environments to enhance security and protect against threats
- Improved infrastructure visibility and operational stability
- Provided support to 95 users across multiple locations
- Provided remote support and after-hours escalation support
- Assisted with infrastructure upgrades and maintenance planning
- Coordinated ShoreTel phone system management
Systems Engineer
E2Services, Inc.
Oswego, IL
03.2016 - 05.2018
- Managed VMware and Hyper-V virtualization infrastructure to optimize resource allocation and performance
- Created PowerShell scripts for Active Directory and Exchange administration
- Improved administrative efficiency through PowerShell automation
- Maintained backup infrastructure and disaster recovery operations to safeguard data integrity and availability
- Supported stable virtualization and backup infrastructure operations
- Supported Windows Server and Microsoft Exchange environments to ensure system reliability and user accessibility
- Performed server patching, firmware upgrades, and performance monitoring
- Configured and maintained HP switching infrastructure
- Provided 24/7 on-call support for system issues
System Administrator
ARPAC, LLC
Schiller Park, IL
03.2014 - 05.2016
- Administered Windows Server, Active Directory, and Exchange environments
- Supported 380+ users across desktop, server, and network infrastructure, ensuring reliable access and performance
- Managed Cisco networking equipment, VoIP systems, and wireless infrastructure
- Installed and configured servers, desktops, printers, and virtual devices
- Troubleshot software, hardware, connectivity, and infrastructure issues
- Maintained system backups and infrastructure documentation, safeguarding data integrity and facilitating recovery processes
- Delivered enterprise-level support for large user environment, resolving issues and enhancing user satisfaction
- Assisted with infrastructure documentation and operational standardization
Education
Associate of Applied Science - Computer Network Systems
ITT Technical Institute
06-2013
Skills
- Microsoft Infrastructure
- Windows Server administration
- Active Directory
- Microsoft 365
- Exchange Online
- Microsoft Entra ID (Azure AD)
- Intune & Endpoint Management
- Conditional Access
- Windows Administration
- Remote Desktop Services (RDS)
- Zerto
- Veeam Backup
- Veeam Backup for Microsoft 365
- Hyper-V
- VMware vSphere
- Virtualization & Storage
- Cisco UCS
- Security Networking
- Cisco AMP
- Cylance
- SentinelOne
- Cisco Umbrella
- Sophos
- Bitdefender
- Barracuda Web Filter
- Proofpoint Essentials
- SonicWall
- Aruba Wireless
- Cisco AnyConnect VPN
- Scripting & Management Tools
- PowerShell Automation
- SolarWinds N-Central
- ConnectWise
- Kaseya
- Microsoft Teams
Certification
- Microsoft Certified: AZ-900
- Currently Pursuing Microsoft AZ-104
Timeline
System Analyst II
Sentinel Technologies
12.2021 - Current
Systems Engineer
SWK Technologies
02.2021 - 11.2021
IT Manager
Charter Steel Trading Co., Inc.
08.2019 - 03.2021
IT Manager
Acme Alliance, LLC
05.2018 - 07.2019
Systems Engineer
E2Services, Inc.
03.2016 - 05.2018
System Administrator
ARPAC, LLC
03.2014 - 05.2016
Associate of Applied Science - Computer Network Systems
ITT Technical Institute