Network Security Engineering • Operations • Cloud Architecture • Automation & AI

Hi, I'm Caio! Building secure, reliable and automated hybrid infrastructure.

Network & Security engineer with hands-on experience in NOC operations, security labs, and cloud infrastructure. This portfolio presents practical projects and documented learning, not just certifications.

View featured projects Explore focus areas

Current Focus

  • AWS SAA-C03: architecture labs (IAM, VPC, HA/DR, serverless, monitoring)
  • Multi-vendor networking: Cisco, Juniper, EVE-NG
  • Python & AI for security and network automation

About me

I’m an IT professional with 10+ years of experience across network operations, infrastructure delivery, and enterprise support, working in large-scale, mission-critical environments where reliability and operational discipline are essential. Now advancing toward a cloud/hybrid security engineering focus, combining strong network fundamentals with defensive security skills and automation to build and support systems that are secure, resilient, and designed for modern operational demands.

Highlights

  • AWS Solutions Architect – Associate (SAA-C03) learning track
  • CompTIA Security+ certified
  • Multi-vendor network simulations (EVE-NG)
  • Python automation & scripting
  • Hands-on SOC & blue team labs

AWS SAA-C03 | Architecture in Progress

I’m building AWS architecture fundamentals as part of the SAA-C03 learning path. The focus is on understanding how core AWS services work together, how security boundaries are designed, and how to make sound architectural decisions, not on producing fully polished production systems.

Current learning focus

  • IAM design with users, groups, roles, and least-privilege access
  • Using IAM roles for workloads instead of long-lived access keys
  • Secure EC2 setups and basic access control patterns
  • Storage choices and trade-offs between EBS, EFS, and instance store
  • Security-first thinking and common AWS design mistakes

EC2 Storage Decision Lab

Hands-on lab exploring EC2 storage options and architectural trade-offs. Covers EBS, EFS, and instance store behavior, including persistence, snapshotting, AMI creation, and immutable infrastructure patterns. Focuses on choosing the right storage model based on cost, performance, and durability requirements.

  • EBS
  • EFS
  • Instance Store
  • Storage Architecture
  • SAA-C03
View repository on GitHub →

EC2 Secure Compute Baseline

Design and implementation of a secure EC2 baseline architecture demonstrating practical understanding of compute, networking, and access control. The lab covers instance provisioning with user data, security group design and behavior, SSH access models, and IAM role usage to enable secure service access without static credentials.

  • EC2
  • Security Groups
  • IAM Roles
  • Compute Fundamentals
  • SAA-C03
View repository on GitHub →

AWS IAM Foundations

Hands-on exploration of AWS IAM concepts, including users, roles, policies, permission boundaries, and service role usage. The repository documents learning notes, practical examples, and security pitfalls encountered while building least-privilege access models.

  • AWS IAM
  • Security Foundations
  • SAA-C03
View repository on GitHub →

Focus areas

Cloud & Infrastructure

Cloud security concepts, IAM, network segmentation, zero trust patterns, and infrastructure-as-code experiments.

View cloud projects →

Networking

BGP & routing labs, network design, Wireshark captures, Juniper & Cisco configurations, and performance tuning.

View networking labs →

Cybersecurity

SOC investigations, SIEM use cases, Suricata, malware traffic analysis, vulnerability management, and GRC labs.

View cybersecurity projects →

AI & Automation

Python tools, AI-assisted analysis, log parsing, and proof-of-concept projects using LLMs for security workflows.

View AI & automation →

Contact

The best way to reach me is via email or LinkedIn. I'm happy to walk through any of the labs or projects you see here.

Links