Sebastian Castrillon

I am an IT Infrastructure Analyst and Cybersecurity enthusiast focused on building secure, efficient, and automated environments.

With over 2 years of hands-on experience, I specialize in hybrid infrastructure management (Windows/Linux), endpoint security, and network administration. I thrive in roles where I can combine troubleshooting (L3) with proactive system engineering.

Core Achievements & Expertise:

• Security & Compliance: Led the centralized deployment of ESET Protect for 50+ endpoints, migrating from unmanaged solutions to a secure enterprise standard (aligned with NIST).

• Network Engineering: Designed and configured perimeter security using NGFW Firewalls (Zyxel) and managed MikroTik routers for VLAN segmentation, load balancing, and QoS to ensure critical uptime.

• System Administration: Managed Active Directory implementations, server diagnostics, and critical application migrations (e.g., Autodesk Vault).

• Operational Continuity: Provided Tier 2/3 support, resolving root-cause issues to minimize downtime, while managing the full IT Asset Lifecycle (ITAM).

Automation & Growth: Beyond infrastructure, I develop automation tools using Python—from data analytics pipelines to content automation bots. I am seeking a challenging remote role where I can leverage my generalist expertise in Infrastructure, Security, and Cloud platforms to drive high-impact results.