A. Brito
Technology Lover
About
Welcome. I’m a security-focused IT professional with over 10 years of experience across enterprise and higher education environments. I specialize in supporting secure infrastructure operations and contributing to vulnerability remediation initiatives within large-scale organizations. This portfolio showcases selected projects and real-world implementations that reflect my commitment to practical security, risk reduction, and continuous professional growth.
Incidents Investigated
Threats blocked
Vulnerabilities Remediated
Phishing Attempts Detected
Skills
Resume
Summary
A. BRITO
Security-focused Systems Administrator with 10+ years of experience across higher education and large-scale regulated enterprise environments. Experience collaborating with Vulnerability Management teams on remediation planning and risk-based prioritization, with a strong foundation in endpoint security and defensive operations.
Skills Overview
Core Technical Skills
The skills below are supported by hands-on labs and real-world freelance projects documented in my portfolio.
- Vulnerability Management & Security Operations: Risk-based remediation coordination, dependency mapping, CVE exposure analysis, and cross-team collaboration within large enterprise environments.
- Endpoint & Identity Management: Windows and macOS administration, Active Directory, Entra ID, and endpoint lifecycle governance.
- Security Tooling Exposure: Microsoft Sentinel, M365 Defender, Tanium ecosystem, Nessus, and Splunk within enterprise monitoring environments.
- Enterprise Infrastructure: Network segmentation strategy, patch management oversight, firewall fundamentals, and infrastructure hardening practices.
- Cloud & Security Architecture: Google Cloud Platform (GCP) security implementation, IAM role design, least-privilege access modeling, incident response simulation, and risk assessment documentation.
Education & Certifications
Master of Science in Cybersecurity & Digital Forensics
University of Central Florida, Orlando, FL
Bachelor of Science in Information Technology & Cybersecurity
Miami Dade College, Miami, FL
CompTIA CySA+ (Cybersecurity Analyst)
CompTIA Security+
Azure Cloud Fundamentals (AZ-900)
Targeting CISSP and MS SC-200
Professional Experience
SYSTEMS ADMINISTRATOR
2025 -Present
Large Energy Utility , South FL
- Supports enterprise infrastructure across a ~20,000-endpoint regulated environment. Collaborates with Vulnerability Management teams on remediation planning and risk-based prioritization.Administers Windows and macOS systems, including Jamf-managed endpoints, within a security-focused enterprise ecosystem leveraging Tanium.
IT SUPPORT SPECIALIST
2022 - 2025
Higher Education Institution, Central FL
- Managed student lab systems (Windows & macOS), deployed updates via MECM/Jamf, and supported SOC operations by resolving alerts, performing log analysis, and assisting with cybersecurity threat investigations using Microsoft Sentinel and Microsoft 365 Defender.
IT Specialist II
2019 - 2022
Higher Education Institution, South FL
- Supported 10,000+ users across enterprise identity and endpoint platforms, including Active Directory, Intune, and Jamf.
- Delivered campus-wide infrastructure and security support in a large-scale academic environment.
Freelance IT & Security Consultant
Ongoing
Multiple Businesses, South FL
- Design and deploy segmented Ubiquiti networks with VLANs, VPNs, IDS/IPS, and firewall policies.
- Conduct vulnerability assessments using Nessus and provide risk-based remediation guidance.
- Implement secure backup and storage solutions to strengthen business resilience.
Projects
This section highlights selected security-focused implementations and case studies demonstrating practical experience in vulnerability management, defensive tooling, and enterprise-style infrastructure design. Each project reflects structured problem solving, risk-based analysis, and real-world security considerations aligned with modern organizational environments.
- All
- Lab Reports
- Cyber Sec
- Cloud
- Network
- Home Labs
- OS / Pen Test
6-Month Risk Reassessment
Reduced legacy risks, implemented centralized monitoring, and evaluated new threats.
Cloud Security Incident Response
Detection, investigation, and remediation of high-risk GCP misconfigurations.
AI Chatbot Security Risk Assessment
Security and compliance analysis of an enterprise AI deployment aligned to NIST and NERC CIP controls.
Vulnerability Lifecycle Management
Risk concentration analysis and targeted remediation reducing endpoint exposure using Wazuh.
SOC Automation Workflow
Real-time detection, enrichment, and alerting pipeline using Splunk, n8n, ChatGPT, AbuseIPDB and Slack.
Risk Assessment – Hybrid Network
Risk register, analysis, and mitigations (M365, Ubiquiti, NAS, VPN).
Email Threat Investigation
Email header analysis, threat intel lookups, malicious URL investigation, IOC extraction and reporting.
