I am an experienced System Administrator and Senior System Engineer with expertise in maintaining and monitoring infrastructure, supporting users, and leading projects.
I have worked for several companies and gained experience with Microsoft Exchange Server, MS Azure, and server virtualization. I hold multiple certifications and have completed various courses. My diverse skill set and experience make me a valuable asset in the field of System Administration and Engineering.
January 2023 - Present
Leading the Support & Engineer department of the company.
- Led and managed the 1st Level support team, driving high performance, engagement, and adherence to established service standards.
- Owned and resolved escalated customer issues, coordinating with cross-functional teams to ensure rapid and effective solutions.
- Collaborated with engineering and development teams to address systemic issues and implement preventive measures for recurring problems.
- Monitored and analyzed key support metrics, ensuring SLA compliance while driving continuous improvement through actionable insights.
- Directed support efforts during critical incidents and outages, implementing robust risk mitigation and business continuity strategies.
July 2018 - December 2022
Responsible for maintaining and monitoring infrastructure. Support users.
- Maintain Microsoft Exchange Server 2016 system.
- Administering MS Azure virtual appliances.
- Maintain AD/DS.
- Support users and computers of the network in VMWare Horizon infrastructure.
- Monitoring servers for problems.
- Leading projects for upgrading and maintaing systems.
July 2015 - July 2018
Responsible for designing, organizing, and supporting company’s infrastructure.
- Infrastructure system and network maintaining & monitoring.
- Identify user needs and troubleshooting problems reported.
- User’s training.
- Evaluate and modify system’s performance.
- Responsible for researching and purchasing computing equipment.
July 2008 - July 2015
- 2010 - 2015: Outsourcer at Greek Bank
- Users & Computer support of the bank
- Development & support bank’s commercials infrastructure system.
- Technical and maintain support of specifically servers.
- 2008 - 2010: Field Service at:
- Corporate clients
- Enterprise group
- Azure Solutions Architect Expert
- Microsoft 365 Administrator Expert
- Cybersecurity Architect Expert
- DevOps Engineer Expert
- Azure Administrator Associate
- Microsoft 365 Administrator
- Identity and Access Administrator Associate
- Azure Developer Associate
- Azure Network Engineer Associate
- Teams Administrator Associate
- Fabric Analytics Engineer Associate
- Power Platform Functional Consultant Associate
- Azure Fundamentals
- Security, Compliance, and Identity Fundamentals
- Azure Data Fundamentals
- Power Platform Fundamentals
- Azure AI Fundamentals
- Dynamics 365 Fundamentals (CRM)
- Dynamics 365 Fundamentals (ERP)
- Red Hat Certified Engineer (RHCE)
- Red Hat Certified System Administrator (RHCSA)
- Cybersecurity
geobarou@gmail.com