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Cristian-Gabriel Calinescu

About us

My name is Cristian Calinescu a Microsoft certified Azure Solutions Architect Expert, Senior Infrastructure Engineer, Infrastructure Security Operations Manager and technical instructor

My areas of expertise are:

-Microsoft Windows Server 2008 R2, 2012 R2, 2016, 2019

-Microsoft Active Directory, Azure Active Directory

-Microsoft Exchange (2003 – 2019)

-Virtualization (Hyper-V, VMWare)

-Linux OS


-Skype for Business ( Lync unified messaging)


– Powershell (including scripting)


– Cyber Security

– Security tools (cloud based or on-premises)

I’ve been involved in various maintenance and/or implementation projects based on technologies mentioned above. I have also participated to network design and implementations projects as well as assisting customers migrating to the latest technologies.

I am certified on the following technologies:

– Microsoft Technology Associate: Windows Operating System Fundamentals

– Microsoft Technology Associate: Networking Fundamentals

– Microsoft Technology Associate: Windows Server® Administration Fundamentals

– Microsoft® Certified Solutions Associate: Windows 8 (MCSA)

– Microsoft® Certified Solutions Associate: Windows Server 2012 R2 / 2016 (MCSA)

– Server Virtualization with Windows Server Hyper-V and System Center (MCSA)

– Microsoft® Certified Solutions Expert: Cloud Platform and Infrastructure (MCSE)

– Comptia Security +

– Microsoft Cyber Security Professional

– Certified Ethical Hacker (CEH v10)

– Micrsosoft Certified Azure Solutions Architect Expert

Why choose us

More than 50.000 students enrolled in our courses

25 + Courses and Practice Tests published online