Dane Clayton

Cybersecurity Security Engineer

Mayo Clinic • Período integral

Sep 2024 - Jul 2026 • 1 yr 10 mos

Served as a Senior Cybersecurity Engineer supporting one of the largest regional healthcare systems in Northeast Florida, securing enterprise infrastructure serving over 15,000 users and 40,000 endpoints across hybrid cloud and on-premises environments. Managed the complete identity lifecycle using Microsoft Active Directory and Microsoft Entra ID, including user provisioning, access modifications, deprovisioning, role-based access control (RBAC), and identity governance. Administered more than 20,000 Active Directory and Entra ID groups while enforcing least-privilege and Zero Trust security principles. Designed, deployed, and maintained enterprise cybersecurity solutions including Microsoft Defender XDR, CrowdStrike Falcon, Microsoft Sentinel, Tenable, Varonis, CyberArk, Fortinet, Infoblox, Arista, Microsoft Exchange Online, Microsoft Defender for Office 365, and Abnormal Security. Engineered Microsoft Sentinel SIEM to ingest and monitor more than 100 TB of security log data by integrating data connectors, developing KQL analytics rules, creating automated playbooks, and building incident response workflows to improve threat detection and response. Designed and implemented enterprise identity and access management solutions including Single Sign-On (SSO), federation, Conditional Access, Privileged Access Management (PAM), secrets management, API integrations, and automated user provisioning. Contributed to the development and maintenance of enterprise security standards, policies, and technical guidelines aligned with industry best practices and regulatory compliance requirements while supporting the organization's overall cybersecurity strategy.

Cybersecurity Security Engineer

Blue Cross Blue Shield Association • Período integral

Sep 2020 - Sep 2024 • 4 yrs

Served as a Cybersecurity Engineer for a national healthcare company, supporting over 2,400 users, 6,000 servers and workstations, and 4,000 managed endpoints across hybrid cloud and on-premises environments. Managed the complete identity lifecycle using Microsoft Active Directory and Microsoft Entra ID, including user provisioning, access modifications, deprovisioning, role-based access control (RBAC), and identity governance. Designed and implemented enterprise identity solutions including Single Sign-On (SSO), federation, Conditional Access, Privileged Access Management (PAM), secrets management, SCIM provisioning, API integrations, and Zero Trust access controls based on the principle of least privilege. Deployed and maintained enterprise identity infrastructure including Active Directory Domain Controllers, PingFederate, Saviynt, Centrify, CyberArk, and load balancers supporting secure authentication and privileged access across Amazon Web Services (AWS), VMware, and on-premises environments. Administered and maintained enterprise security technologies including SIEM, endpoint protection, firewalls, spam filtering, antivirus, and intrusion detection systems to strengthen the organization's security posture. Participated in security incident investigations and remediation activities across production and development environments. Managed Windows, macOS, and Linux servers and workstations while using Microsoft Intune and SCCM to deploy software, enforce security configurations, and maintain more than 4,000 endpoint devices. Supported enterprise storage and network file systems managing approximately 50 TB of data. Contributed to the development of security standards, policies, procedures, and knowledge articles aligned with HIPAA, NIST 800-53, FedRAMP, and PCI DSS. Delivered enterprise technical support through ServiceNow, resolving over 5,000 IT and security-related incidents while participating in an on-call support rotation.