Alin Florin Popescu

Senior System Administrator

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Professional Summary

Experienced Senior System Administrator with a strong background in managing and leading IT support services. Proven track record in providing exceptional IT support, managing IT infrastructure, and leading teams to ensure seamless IT operations. Skilled in incident management, problem-solving, and implementing best practices to enhance service delivery and operational efficiency.

Work Experience

Senior System Administrator

Deloitte Milan, Italy

06/2024 - Present

Following my promotion, responsibilities included:

  • Led IT infrastructure initiatives, mentored team members and conducted technical interviews.
  • Engaged clients and stakeholders; produced operational reports and coordinated contract-related meetings.
  • Performed cloud cost analysis and optimizations (up to 20% savings).
  • Scheduled and implemented Azure resources rehosting/replatforming and migration with ATAData.
  • Managed hybrid infrastructures and cloud only environments (Azure, AWS, GCP).
  • Managed IaC (Terraform) and CI/CD pipelines with Git operations.
  • Created automation scripts for repeterive actions (PowerShell, Bash) like daily check activities.
  • Documented IT infrastructure, processes, and procedures.

System Administrator

Deloitte Milan, Italy

03/2022 - 06/2024

Managed and maintained the infrastructure of Deloitte Italy and client companies. Key responsibilities included:

  • Resolved incidents, implemented changes, and completed tasks within SLA guidelines
  • IT infrastructure monitoring on Cloud and On-Prem with Zabbix
  • Performed cloud cost analysis and proposed optimizations to clients
  • Designed, implemented, and managed a multi-platform virtualized infrastructure
  • Managed domain services, including Active Directory, DNS, DHCP, GPO, shared folders, and patching
  • Administered and secured Citrix Cloud environments
  • Documented IT infrastructure, processes, and procedures
  • Contributed to infrastructure automation using scripting (PowerShell, Bash) and IaC (Terraform)

ICT System Administrator

E.TEREA Milan, Italy

02/2019 - 02/2020

Provided help desk and systems support to client companies and their employees. Key responsibilities included:

  • Resolved incidents, implemented changes, and completed tasks within SLA guidelines
  • Monitoring tool installation (Zabbix, Nagios, GLPI) on Cloud and On-Prem
  • Creation, management, and configuration of virtual machines (Windows and Linux) in various environments
  • VEEAM installation and configuration for backup/restore
  • Users' permissions, GPO, and mail management
  • Sophos Enterprise Antivirus installation, configuration, and management
  • Documented IT infrastructure, processes, and procedures

Freelancer IT Administrator

Beckman Coulter SRL Cassina de' Pecchi, Italy

10/2016 - 02/2019

Provided IT assistance to Beckman Coulter's Italian office in collaboration with the IT Manager and corporate teams. Key responsibilities included:

  • Incident, change, and task resolution at second and third levels with adherence to SLAs, ensuring timely resolution and customer satisfaction
  • Managed local servers, network, and security in collaboration with level 2 support in other countries, demonstrating strong coordination and problem-solving skills in a multinational environment
  • Oversaw user permissions, groups, and GPO management, showcasing detailed knowledge of user access control and security policies
  • Handled computer, VoIP, and mobile device inventory, configuration, and provided basic user training, maintaining comprehensive documentation and user support
  • Managed Veeam backup and restore processes, ensuring data integrity and disaster recovery preparedness
  • Led change management initiatives for IT upgrades, including user communication, training, and post-implementation support to ensure smooth transitions

Certifications

Azure AI Fundamentals

Microsoft Certified: Azure AI Fundamentals

Microsoft

Jenuary 2026

ITIL 4 Foundation

ITIL 4 Foundation IT Service Management Certification

Axelos

December 2023

OpenSM Foundation

OpenSM Foundation

APMG International

December 2023

Google Project Management

Google Project Management: Professional Certificate

Coursera

December 2023

Microsoft Security

Microsoft Certified: Security, Compliance, and Identity Fundamentals

Microsoft

September 2023

Azure Fundamentals

Microsoft Certified: Azure Fundamentals

Microsoft

June 2023

Google IT Support

Google IT Support Professional Certificate

Coursera

September 2021

Education

Diploma in Computer Science and Telecommunications

I.T.I.S. Guglielmo Marconi
Gorgonzola, Italy 08/2011 - 07/2016

Languages

🇮🇹

Italian

Native

🇷🇴

Romanian

Native

🇬🇧

English

Fluent