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sergius ungureanu

@sergiusungureanu

Senior Virtualization Administrator with 15+ years designing and optimizing virtual infrastructures.

Romania
Message

What I'm looking for

I am looking for a senior role where I can lead virtualization and infrastructure projects, drive automation and reliability, mentor engineers, and work in a structured, high-availability-focused environment.

I am a Senior Virtualization Administrator with over 15 years of experience designing, managing, and optimizing large-scale virtualized environments for banking, finance, government, and IT clients. I specialize in Citrix XenServer and VMware ESXi and have consistently delivered high-availability, scalable infrastructure solutions.

I have led technical teams, mentoring more than 10 junior administrators, and driven operational improvements through automation—creating over 50 custom Bash and PowerShell scripts that reduced costs and manual workload. My hands-on background includes performance tuning, storage integration, P2V/V2V migrations, and disaster recovery planning.

I seek to bring deep technical knowledge and leadership to a senior role where I can continue to improve reliability and efficiency, implement proactive solutions, and contribute to the professional growth of engineering teams.

Experience

Work history, roles, and key accomplishments

OS

System Administrator

OSF Global Services

Apr 2012 - Mar 2014 (1 year 11 months)

Managed and optimized VMware ESX/vSphere virtualization and cloud integration, streamlined administration via PowerShell and Bash scripting, and supported Windows and Linux servers for business-critical applications.

Education

Degrees, certifications, and relevant coursework

Transilvania University of Brașov logoTB

Transilvania University of Brașov

Electrical Engineering and Computer Science

2002 - 2007

Completed studies in Electrical Engineering and Computer Science from 2002 to 2007, focusing on systems and infrastructure relevant to virtualization and IT administration.

Tech stack

Software and tools used professionally

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sergius ungureanu - Senior Virtualization Administrator - Atos IT Solutions and Services | Himalayas