Yeray Y. Lafontaine Martinez

IT & Cloud Security Engineer · Founder, Lafontaine Security LLC · Previously Held U.S. Secret Clearance

📧 [email protected] · 🌐 lafontainesec.dev · 🐙 github.com/V3ND3D

Professional Summary

Hands-on IT & Cloud Security Engineer and founder of Lafontaine Security LLC — an independent cybersecurity consulting practice serving healthcare, legal, and financial organizations. Sole IT and security owner across a 6-site, 83-user organization — managing Identity, Endpoint, Data Protection, Network, and Monitoring domains on Microsoft 365 Business Premium and Azure from the ground up. Led Beazley cyber insurance compliance program, deployed Cisco Duo MFA across VPN infrastructure, authored a 16-document governance library including 7 IR runbooks, and conducted internal vulnerability assessments using Nmap and Nessus Essentials. Previously held U.S. Secret Clearance. Pursuing B.S. in Cybersecurity at WGU.

Experience

Founder & Principal Consultant | Lafontaine Security LLC | San Juan, PR

Mar 2026 – Present

• Provide cloud security architecture, HIPAA compliance program development, and security hardening engagements for healthcare, legal, and financial services organizations.
• Offer tiered engagements from baseline IT hardening to full HIPAA compliance program build-outs and ongoing fractional security engineer retainers — scoped, documented, and delivered against defined outcomes.
• Specialize in Microsoft 365 Business Premium environments — Entra ID, Intune, Defender for Business, Purview, and Azure Log Analytics — with deep HIPAA, NIST CSF, and CIS Controls alignment.

IT & Cloud Security Engineer | Eric Feldmann, LLC | San Juan, PR

Sep 2025 – Present

• Sole IT and security owner across a 6-site, 83-user, 39-endpoint HIPAA-regulated organization
• Drove Microsoft Secure Score from ~40% → >96%
• Deployed Cisco Duo RADIUS MFA for Client VPN — closed compensating control CC-VPN-001