Patrick Singletary

Responsible for advanced engineering, administration, and support of enterprise server infrastructure, identity and access management platforms, and security operations tooling.
Senior technical resource within IT Infrastructure Operations, providing hands-on support, architectural input, and operational leadership across on-premises and cloud environments (Azure and AWS).
Lead administration, configuration, and support of Windows and Linux server environments across enterprise data centers and cloud platforms.
System lifecycle management aligned with security
and compliance standards.
Support hybrid infrastructure environments spanning on-premises, Azure, and AWS.
Administer and maintain Active Directory infrastructure, including domain controllers, Group Policy, organizational units, and related directory services.
Manage user, computer, service account, and security group administration in alignment with access management, operational, and compliance requirements.
Troubleshoot Active Directory replication, authentication, name resolution, and policy application issues across enterprise environments.
Manage and support enterprise identity platforms including Active Directory, Okta (MFA, SSO), Quest Active Roles, and Quest InTrust/Change Auditor.
Implement and maintain secure authentication and authorization models.
Troubleshoot identity synchronization and access issues.
Administer CyberArk Privileged Access Management (PAM), including credential vaulting and privileged session monitoring.
Support enterprise security tools used for endpoint protection and vulnerability management. Monitoring, Logging & Splunk Administration
Administer Splunk infrastructure including forwarders, indexers, and search heads.
Configure log ingestion across systems and develop dashboards and alerts.

Senior technical resource in IT Infrastructure Operations spanning on-premises, Azure, and AWS environments.

Server & Infrastructure Administration: Lead administration, configuration, and support of Windows and Linux server environments across enterprise data centers and cloud platforms. Perform system builds, patching, performance tuning, and lifecycle management aligned with security and compliance standards. Support hybrid infrastructure spanning on-premises, Azure, and AWS. Administer Active Directory infrastructure including domain controllers, Group Policy, organizational units, and related directory services. Manage user, computer, service account, and security group administration aligned to access management and compliance requirements. Troubleshoot Active Directory replication, authentication, name resolution, and policy application issues across enterprise environments.

Identity & Access Management: Manage enterprise identity platforms including Active Directory, Okta (MFA, SSO), Quest Active Roles, and Quest InTrust/Change Auditor. Implement secure authentication and authorization models and troubleshoot identity synchronization and access issues.

Privileged Access & Security Tools: Administer CyberArk Privileged Access Management (PAM) including credential vaulting and privileged session monitoring. Support enterprise security tooling for endpoint protection and vulnerability management.

Monitoring, Logging & Splunk Administration: Administer Splunk forwarders, indexers, and search heads; configure log ingestion and develop dashboards and alerts.

Cloud Engineering: Support Azure and AWS infrastructure and implement cloud security controls.

Security Operations & Compliance: Support incident response, vulnerability remediation, and audit activities.

Automation & Scripting: Develop automation using PowerShell, Python, and similar tooling.

Collaboration & Leadership: Serve as a technical lead and mentor junior engineers.

Responsibilities:

SSO, PAM, Non-Employee Lifecycle Management, AD RBAC enforcement

Project : ERP

Onboarding of RBAC provisioning of access to Oracle HRM, Oracle ERP, and Coupa

Project : SailPoint ISC

Initial Implementation of environment & Connecting Authoritative ID Sources

Partnering with Technology Owners and Business Owners to update Process and Documentation to convert systems

Responsibilities:

SSO, PAM, Non-Employee Lifecycle Management, AD RBAC enforcement

Project : Enterprise MFA

R&D, Propose, Source technology and service, and Implementation

Lead Engineer and Subject Matter Expert

Deployed PKIaaS and Certificate based authentication to 35k + Endpoints

Project : CarMax Acquisition of Edmunds, Integrations of identity systems

Project : Enterprise PAM

IAM/PAM SME for Onboarding Teams and conversion of processes

Integrate new technology and make it work! Principle design of Windows 10 with Security Baselines as a standard and assessment / implementation for privileged access. Redesign of AirWatch Organization Groups for compliance and better integration with our identity Management systems and Active Directory Lead testing and changes to our browser platforms to introduce Google Chrome and Internet Explorer 11 (With Legacy Browser Support and Enterprise Mode) Part of our Home/Alternate Delivery Team to address our forms management process (printing & scanning and it evolution to digital signature and delivery) Principle design of GPO structure and its correlation to Active Directory structure. Migrated Enterprise from Windows XP to Windows 7 over 2 years. Peak throughput was 1000 desktops across 10 stores over 4 nights with only 14 incidents reported.