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Themistoklis Baltzakis IT Network Engineer & Cloud Architect

IT Network Engineer with over 15 years of extensive experience in network infrastructure, Cisco systems, and Fortinet security solutions. Specializing in data center management, Azure AD, Microsoft 365 administration, and AWS cloud environments.

From designing secure enterprise networks to building modern web applications with React, Next.js, and serverless architectures. I bridge the gap between infrastructure engineering and full-stack development.

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Core Expertise

With deep expertise in Cisco routing and switching, Fortinet firewall management, and enterprise network security, I deliver reliable, high-performance infrastructure for organizations of all sizes. My background spans data center operations, VPN configuration, network monitoring, and disaster recovery planning.

Beyond traditional networking, I bring hands-on experience with cloud platforms including AWS and Azure, containerization with Docker and Kubernetes, and modern DevOps practices. I hold certifications in Cisco, Fortinet, and AWS, and I am passionate about continuous learning and adopting emerging technologies to solve real-world problems.

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What Colleagues Say

Themis has an exceptional ability to diagnose complex network issues under pressure. His deep knowledge of Cisco infrastructure and proactive approach to security made him an invaluable member of our NOC team.

Aristotelis K.

Senior Network Architect · Athens International Airport

Test Your Knowledge

A quick cybersecurity & cloud quiz. How do you score?

Question 1/5Score: 0

What does the 'Zero Trust' security model assume?

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