IT Operations · Infrastructure · Support

IT Systems
Administrator

I'm Daniel Vigezzi, an IT Systems Administrator focused on keeping technology reliable, secure and working smoothly. This portfolio is a place to explore my technical skills, areas of knowledge, professional experience, and ongoing development.

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Systems administration Infrastructure IT operations Troubleshooting

Professional profile

Reliable systems
Practical solutions

A professional overview of my approach to IT administration, service reliability and technical problem-solving.

As an IT Systems Administrator, I work in the space where infrastructure, users and business operations meet. I value dependable systems, clear documentation, thoughtful security practices and resolving technical issues methodically.

This portfolio is intended to provide an overview of my capabilities and experience. The technical areas below reflect the platforms, tools and environments I have worked with directly.

My focus: dependable IT services, secure infrastructure and a positive experience for the people who rely on technology every day.
Infrastructure & SystemsAdministration, maintenance, monitoring and lifecycle support.
Identity & AccessUser accounts, permissions, authentication and access management.
Security & ContinuitySystem hardening, patching, backups and recovery readiness.
Service & SupportTroubleshooting, documentation and end-user technical support.

Technical capabilities

Skills & knowledge

I commonly utilize all of the skills and tools shown below.

Systems & servers

Server administration, operating systems, maintenance and troubleshooting.

Windows Server: 2012 - 2022vCenter AdministrationDELL EMCPatch Management

Identity & productivity

Directory services, user lifecycle, permissions and collaboration platforms.

Active DirectoryGroup PolicyMicrosoft 365Entra ID

Networking

Network services, connectivity, infrastructure fundamentals and fault isolation.

DNSDHCPTCP/IPVLANsSSL VPN

Virtualization & cloud

Virtual workloads, hosted services, resource management and cloud operations.

Hyper-VVMWareAzureCloud ServicesVM management

Security & continuity

Protective controls, endpoint security, backup operations and recovery planning.

Endpoint ProtectionMS Defender XDRVeeam Backup & RecoveryMS & DUO MFASecurity patching

Automation & operations

Repeatable administration, scripting, monitoring and operational documentation.

PowerShell ScriptingConnectWise Automate MonitoringITGlue documentationConnectWise Manage Ticketing

Career history

Professional experience

I am grateful to have demonstrated tangible growth throughout my past work experience. The entries below tell the story of my work history.

Dec 2022 – Present

IT Systems Administrator

The Computer Company, Inc. · Cromwell, CT

I work both independantly and on a small team supporting two clients for TCC as a Managed Service Provider (MSP). These clients are both in the aerospace industry, however I previously supported clients in legal, medical, and manufacturing before settling into my current role.

  • Lead technical remediation and audit readiness efforts for NIST 800-171r2 and CMMC.
  • Administer Microsoft 365 environments, including Entra ID, Intune, Exchange Online, Teams, SharePoint Online, OneDrive, and Purview.
  • Track incidents, service requests, technical work, and operational activities using ConnectWise tools and established IT service management processes.
  • Manage Active Directory, user licensing, Microsoft and DUO MFA, Conditional Access, RBAC, and device compliance to maintain secure access to the environment.
Sept 2019 – Dec 2022

Network Technician

End-Game Strategy, Inc. · Berlin, CT

I was a part of a small team supporting a 24/7 business handling healthcare data. My time was spent ensuring that the data was secure at rest and in transit, and that the company was protected at all times through policy and procedure.

  • Oversaw, designed, and maintained core on-site network infrastructure.
  • Maintained accurate and verbose asset inventory documentation.
  • Updated and maintained internal IT security policy and procedures.
  • Collaborated with executive staff and outside vendors to maintain and ensure HITRUST/HIPAA security compliance with best industry practices.

Professional development

Certifications & learning

I am proud of my ongoing education and earned certifications. These keep me up-to-date and on top of the current IT landscape.

A+CompTIA · Jul 2019
Network+CompTIA · Apr 2019
MCSA: Windows 10Microsoft · Jan 2019
Microsoft Certified ProfessionalMicrosoft · Jan 2019
Microsoft 365: FundamentalsMicrosoft · Oct 2025
Security, Compliance, and Identity FundamentalsMicrosoft · Nov 2025
Identity and Access Administrator AssociateMicrosoft · In progress
Copilot and Agent Administration FundamentalsMicrosoft · In progress
Endpoint Administrator AssociateMicrosoft · Planned for 2027