Ramiro
Pereyra

System Administrator Lead at FIS  ·  Cloud Engineer  ·  Microsoft 365 & Azure Specialist

15+ years engineering secure, scalable cloud infrastructure across financial, government, and healthcare sectors. Specialized in Microsoft Azure, M365, and enterprise-grade hybrid environments.

15+ Years Experience
100+ Tenants Managed
11 Certifications
View Certifications LinkedIn Profile
Microsoft
AZ-104 · MS-102 · MD-102 · AZ-900
Cisco
Cisco
CCNA — Routing & Switching
CompTIA
CompTIA
CySA+ · Security+ · A+ · Network+ · CSIS · CSAP · CIOS

Verified Credentials

Certifications

AZ-104
Microsoft Certified: Azure Administrator Associate
Verify Credential
MS-102
Microsoft 365 Certified: Administrator Expert
Verify Credential
MD-102
Microsoft 365 Certified: Endpoint Administrator Associate
Verify Credential
AZ-900
Microsoft Certified: Azure Fundamentals
Verify on Credly
Cisco
CCNA
Cisco Certified Network Associate
View on Credly
CompTIA
CySA+
CompTIA Cybersecurity Analyst
View on Credly
CompTIA
Security+
CompTIA Security+
View on Credly
CompTIA
CSIS
Secure Infrastructure Specialist
View on Credly
CompTIA
CSAP
Security Analytics Professional
View on Credly
CompTIA
CIOS
IT Operations Specialist
View on Credly
CompTIA
A+
CompTIA A+
View on Credly
CompTIA
Network+
CompTIA Network+
View on Credly

Career Journey

Professional Experience

System Administrator Lead
Feb 2020 – Present
FIS Global  Financial Technology · Fortune 500
  • Architected and administered Azure AD, Intune, Defender, Compliance, and SharePoint across 100+ financial institution tenants, achieving 99.9% uptime SLA.
  • Engineered 20+ on-premises-to-Azure migrations (lift-and-shift, refactor, rebuild), reducing infrastructure overhead by ~35%.
  • Orchestrated M365 tenant-to-tenant migrations and Exchange hybrid deployments for thousands of end users with zero data loss.
  • Automated recurring tasks with PowerShell, eliminating 10+ hours/week of manual effort and reducing errors by 60%.
  • Deployed DKIM, SPF, and DMARC across all tenants, achieving 100% compliance on quarterly audits.
  • Hardened endpoints and cloud tenants; resolved Nexpose vulnerability findings, reducing critical CVEs by 70%.
  • Maintained 98%+ patch compliance across the fleet via BigFix, SCCM, and KACE K1000.
Technical Support Analyst
Apr 2018 – Dec 2019
City of Fort Lauderdale  Municipal Government
  • Delivered citywide IT support across 15+ departments, maintaining 95%+ first-call resolution.
  • Administered Meraki MDM and KACE platforms managing 300+ endpoints.
  • Enforced PCI and HIPAA compliance aligned with NIST CSF and FEMA standards via SCAP/OVAL scanning.
  • Supported Office 365 and SharePoint Online for 1,000+ city users.
IT Manager / System Administrator
May 2012 – Sep 2014
Conexia  Healthcare Technology
  • Led a team of 10 IT professionals, overseeing strategic planning, budget, and vendor SLA management.
  • Implemented VMware Cluster Farm with HA and FT, achieving 99.8% availability.
  • Designed Disaster Recovery and Business Continuity Plans, reducing potential downtime impact by 50%.
System Administrator
Aug 2006 – May 2012
ADT Security Services / Tyco · TASA Logistics  Security & Logistics
  • Managed multi-site AD environments, Exchange, SAN, antivirus, and backup systems across security and logistics sectors.
  • Implemented Windows Server Cluster Services ensuring high availability for critical security infrastructure.
  • Maintained SOX compliance and provided 24x7 technical support across multiple client sites.

Technical Expertise

Skills & Technologies

☁️ Cloud Platforms
Microsoft Azure Azure AD / Entra ID Microsoft 365 Azure AD Connect Intune Defender for Cloud SharePoint Online Hybrid Cloud
⚡ Automation & DevOps
PowerShell SCCM / MECM BigFix KACE K1000 Meraki MDM Maas360
🖥️ Virtualization
VMware vSphere/ESXi Hyper-V Citrix XenApp XenDesktop 7.15 PVS & MCS HA & Fault Tolerance
📧 Messaging & Identity
Exchange 2013–2022 Exchange Online Tenant-to-Tenant Migration DKIM / SPF / DMARC PKI / CA
🔒 Security & Compliance
PCI-DSS HIPAA SOX NIST CSF CIS Benchmarks Nexpose Symantec VIP RSA
📊 Monitoring & ITSM
ServiceNow SolarWinds Orion SevOne Zabbix Commvault ITIL

Regulatory Experience

Compliance Frameworks

PCI-DSS
HIPAA
SOX
NIST Cybersecurity Framework
FEMA 100 / 200 / 700
ITIL Methodology
CIS Benchmarks
SCAP / OVAL

Get In Touch

Let's Connect

linkedin.com/in/ramiropereyra

About

Cloud Engineer & Infrastructure Specialist

Ramiro Pereyra is a Cloud Engineer and Microsoft 365 Administrator based in Fort Lauderdale, Florida, with over 15 years of hands-on experience in enterprise IT infrastructure. Currently serving as System Administrator Lead at FIS Global, a Fortune 500 financial technology company, Ramiro manages cloud environments for more than 100 tenants across the United States.


Ramiro holds four active Microsoft certifications: AZ-104 Azure Administrator Associate, MS-102 Microsoft 365 Administrator Expert, MD-102 Endpoint Administrator Associate, and AZ-900 Azure Fundamentals.

His core expertise spans Microsoft Azure, Azure Active Directory (Entra ID), Microsoft Intune, Exchange Online, Exchange Server, SharePoint Online, Windows Server administration, Active Directory, DNS, DHCP, Group Policy, VMware vSphere, Hyper-V, Citrix XenApp, SCCM, and PowerShell automation.


Ramiro has deep experience with regulatory compliance frameworks including PCI-DSS, HIPAA, SOX, and NIST, and has supported financial institutions, government agencies, and healthcare organizations across the United States.