Security Engineer Cloud
Resume:
John Pfeiffer
**********@*******.***
www.linkedin.com/in/john-pfeiffer-b47967/
Summary:
** ***** ** ********** ** a senior system and Microsoft 365 cloud security engineer with experience across industries; including Fortune 500 and other respected national and multi-national corporations and organizations.
Proven experience as a Microsoft 365 /Cloud Security Engineer with In-depth knowledge of SIEM, SOAR, Microsoft Azure services, Data Loss Prevention, Advance Threat Protection, Microsoft Intune, Endpoint Security, Microsoft Defender for 365/Endpoint/Identity/Cloud App Security Identity Access Management and Zero Trust
Recognized for efficiency and streamlining Cloud Security Architecture, Technical and IT Operational and processes.
Experienced Engineer in Microsoft 365, M365 Security and Compliance, Azure AD, Azure PIM, Identity Protection and Security administration.
Microsoft Sentinel and Purview, KQL, Cybersecurity, Microsoft ADFS, Microsoft Intune, OAuth 2.0, SAML 2.0, Ping ID/Federate/Access, CASB, NIST, ISO 27001.MITRE ATT&CK
Exchange Online/2019/2016/2013/2010/2007/2003, Windows 2022/2019/2016/2012R2, VMware 7.x/6x/5x, /Hyper-V, Quest Migration Manager and Active Roles.
Deployment and administration of Azure Security Services, Azure Security Center, Azure AD Connect and Conditional Access Policies
Microsoft, DMAC, DKIM, SPF, Intrusion, and threat hunting
Experience managing and administering Messaging environment of up 100,000+ mailboxes.
Technical Training:
Integrating Microsoft Defender and Purview
Microsoft Security, Compliance, and Identity (SC-900)`
Microsoft Security Operations Analyst (SC-200)
Implementing and Administering Microsoft Sentinel
Microsoft Purview Compliance Manager
Microsoft Defender for 365/Endpoint/Servers/Entra Identity Protection
Microsoft Azure Network Security Ninja
Microsoft 365 Copilot Champion
Microsoft Azure Identity and Access Management
Microsoft Azure Administrator (AZ-104)
Microsoft Azure Fundamentals Exam Prep (AZ-900)
Microsoft Azure Security Technologies (AZ-500)
Microsoft Azure Administration
Microsoft Azure Security Center
Microsoft Azure Networking Services
Microsoft 365 User Guide
Microsoft 365 Essentials
Automate Azure Tasks with PowerShell Scripts
Managing Microsoft 365 Identities and Requirements
Mastering Microsoft 365 Administration
Microsoft Active Directory with Windows Server 2016
Microsoft Windows Server 2019
Microsoft Cybersecurity Architect Expert Certification Exam Prep
Microsoft Dynamics 365 Customer Engagement Administration
Cybersecurity with Cloud Computing
Education:
Fordham University Graduate School of Business - Tarrytown, NY
MBA courses in Information and Communication Systems
Lehman College, City University New York - New York, NY
Bachelor of Science in Management and Computer Information Systems
Graduate courses in Economics
Professional Experience:
PDI Healthcare - Woodcliff Lake, NJ 08/2025–Present
Microsoft 365 Quest Migration Consultant (Short-Term Project)
Roles & Responsibilities
Lead M365 Engineer for migration of 1,500+ servers, laptops, desktops and mobile devices.
Migrate On-Prem mailboxes and File Shares to Microsoft 365 Tenant.
Deploy and manage Quest ARS with RBAC, Access Templates, and automation.
Integrate Microsoft 365 services and ensure security/compliance.
Provide Microsoft 365 Consulting expertise for business requirements to improve efficiency
Deliver expert support for all related M365, Intune and Mobile Device Management issues.
Troubleshoot and resolve issues related to domain joins, user profiles, Group Policy, DNS, DHCP, network connectivity and Azure AD related services.
Utilize the Quest migration tool to perform domain joins, profile transfers, and ensure seamless user experience post-migration.
Migrate multi-forest Active Directory and hybrid identity Quest sync (AD Entra ID).
Client: 1199SEIU 07/2023 – Present
Senior Microsoft Endpoint Consultant
Roles & Responsibilities
Configure and enforce security and compliance policies on mobile devices, laptops, and desktops.
Manage Endpoint Solution devices and provide user guidance and support
Configured retention labels and lifecycle policies using Purview Records Management to replace legacy SharePoint record center templates
Provide architecture, configuration and functional support to expand capabilities in Microsoft 365.
Implement and manage mobile device and application management (MDM) and (MAM) policies.
Implement Microsoft 365 solutions with multiple data sources.
Tiffany’s Corporation – Parsippany, NJ 01/2023 – 05/2023
Microsoft 365 Migration Consultant
Roles & Responsibilities
Identify areas and processes where Microsoft 365, Azure AD, Exchange, Defender for Endpoint, and Intune can be leveraged into Microsoft Purview and Sentinel to facilitate process and security improvement.
Deployment of Microsoft Defender for Servers for integration with Microsoft Defender for Endpoint.
Enforce Device Compliance with Microsoft Defender for Endpoint with Conditional Access for Intune.
Migration of Microsoft 365 suite, including Exchange Online, SharePoint Online, OneDrive for Business and Teams.
Manage Office 365 License Infrastructure to reclaim, reassign and manage license assignments.
Administration of Azure AD and On-Prem AD for cloud-based authentication and access management services.
Enhance Office 365 Deployment Reporting using automation support utilizing Power Automate and Power Bi.
ADC Therapeutics – Remote Support 01/2022– 09/2022
Microsoft 365 Consultant
Roles & Responsibilities
Responsible for design, implementation, and ongoing maintenance of the MS Dynamics 365 Supply Chain Management, Finance and Operations and CRM for Pharmaceutical Manufacturing sites.
Deployed Microsoft Purview DLP Policies to protect sensitive data across Exchange Online, SharePoint, One Drive and Microsoft Teams
Okta end to end deployment for User provisioning, Single Sign-on, Active Directory and LDAP integration.
Interact with both Business Technology support staff and business users to understand requirements, evaluate alternative solutions, resolve problems, and issues, communicate status, and document system changes.
Microsoft Office 365/Azure AD/SSO support for rapidly growing Advance Cell research biotechnology company.
Complete all required GxP, GAMP, SDLC, and SOX compliance training.
New York Life Insurance – Remote Support 10/2020– 01/2022
Microsoft 365 Cloud Security Engineer III
Roles & Responsibilities
Deployment of Microsoft Defender for Endpoint with Microsoft Intune for Device Enrollment, Compliance and Remote Device management,
Configure Microsoft Sentinel to collect data, create interactive reports and correlate alerts into incidents using analytics rules for SIEM and SOAR automated response.
Implemented Purview Data Lifecycle Management to enforce retention schedules across SharePoint and Microsoft 365 content repositories.
Perform policy and rule reviews for IDS/IPS, DNS, EDR/XDR, DLP including email security framework DKIM, DMARC, and SPF.
Monitor and remediate risks events from Microsoft Sentinel/Purview and Azure Security systems and compliance dashboards and associated Cloud-based infrastructure.
Responsible for Exchange Online, SharePoint, One Drive, and Teams migration support using the Quest ODM tool.
Azure AD Security, architecture and administration support for Provisioning User accounts, Membership, and Group Object creation.
Collaborate with Security Compliance, Governance, and Legal teams for Data Loss Protection, eDiscovery, and archiving.
Deploy Microsoft 365 products: Defender for Microsoft 365, Identity, and Endpoint and Cloud App Security to protect against attacks.
Cloud Microsoft Azure Administration configuring virtual machines, storage accounts, and resource groups.
UNISYS – Remote Support – NY 11/2019– 06/2020
Cloud/Microsoft 365 Engineer – Active Directory Operations
Roles & Responsibilities
OKTA Support for Provisioning accounts managed and secure user authentication into applications, and build identity controls into applications, website web services, and devices.
Quest Migration Support for 51,000 State of Georgia users for Microsoft Azure, MFA and SSO Authentication.
Design and deploy Virtual Machines and Storage Systems using Azure Resource Manager templates.
Security Compliance, adoption and configuration of Azure Information Protection, and Rights Management.
Troubleshoot and support Azure Remote login to Virtual Machines to monitor and deploy applications.
Ensure Migration Readiness of Office 365 Infrastructure (firewall ports, network rules, Office 365 Security, SSO)
Process Project Change Management Request for ADDS and ADFS changes.
Create and Configure Tenant and Retention Policies for Office 365 Services.
Pfizer Pharmaceutical - Parsippany, NJ 10/2013– 10/2019
Enterprise Infrastructure Consultant – Global Active Directory Operations
Roles & Responsibilities
Microsoft 365 migration of Exchange Online, SharePoint, One Drive, Outlook Power-BI and Teams.
Manage Identities and Devices with Microsoft Intune for Device Enrollment, Endpoint Privilege Management, Advanced Endpoint Analytics and Windows Autopatch.
Configure and Deploy Microsoft Defender for Endpoint, Intune, Identity and Cloud Apps.
Utilize KQL to search, analyze and write detection rules for Azure Log Analytics and Microsoft Sentinel to explore data, identify anomalies and intrusion detection.
Implement, Administer and Deploy Microsoft Active Directory Domain and Microsoft Certificate Services.
Implement, Manage, Administration, and Migration Support of Microsoft Azure AD/Office 365 Security Infrastructure.
Configure Conditional Access through the Azure Portal for Multi-factor Authentication to access cloud services.
Utilize SolarWinds Network Bandwidth Analyzer to detect, diagnose, and resolve network performance issues
QMM Migration Lead for all Pfizer AD and Office 365 Migration.
Troubleshoot migration support of On-Premises Services to Microsoft Azure AD/Office 365.
Upgrade AMER, EMEA, and APAC Pfizer Domain Controllers to Windows 2016
Support Dynamics 365 Data, Security, Finance, and Supply Chain Management applications.
Forest to Forest Active Directory Migration of Pfizer Servers, Workstations AD Groups, and Objects.
Troubleshoot DNS, WINS, Azure AD, Security Group, Login Script, GPO, and profile issues.
Modify PowerShell scripts for User Provisioning, Security Group creation, and user account moves
Liaison between Pfizer and Zoetis/Hospira Technology teams to resolve Business migration issues.
Design and implement Office 365 and related technologies including Exchange Online MS Teams.
Troubleshoot Active Directory Federation Services (ADFS) and Single Sign-On issues
User Provisioning and migration support to Office 365 including OneDrive for Business and MS Teams.
Novartis Pharmaceutical - East Hanover, NJ 08/2012 – 9/2013
Microsoft 365 Consultant – Global Active Directory Operations
Roles & Responsibilities
Provide 3rd Level Support for 465 sites and 7 domains for the Novartis Global Active Directory Operations team.
Migration Support and administration of Global Office 365 environment.
Troubleshoot ADFS, Azure AD, SSO, Security Group, Login Script, and GPO issues.
PowerShell scripting for User Provisioning, Security Group creation, and user account moves.
Migration of Active Directory objects using Quest Migration Manager
Management of AD objects using Quest Active Roles Server Console.
Pearson Publishers - Upper Saddle River, NJ 04/2012 – 07/2012
Exchange 2010 Lync 2010 Migration Lead
Roles & Responsibilities
Deployment Specialist for Exchange Migration from Exchange 2003, Exchange 2010 hosted solution/Google Apps as identified in scope for 40,000 plus mailbox environment.
Troubleshoot Exchange 2003/2010, Microsoft Lync 2010, SharePoint, Active Directory and Google Apps for Business Experience.
Starpoint Solutions - New York, NY 01/2012 – 03/2012
Exchange/Active Directory Migration Consultant
Roles & Responsibilities
Support Exchange Migration from Exchange 2003/2007 to Exchange 2010 for 45,000 plus mailbox environments via Quest Migration Manager.
Support and administer Microsoft Lync 2010 environment.
Perform backup, restores and migration of Enterprise Vault Mailboxes.
Troubleshoot Active Directory, SMTP Mail flow, DNS and PowerShell scripting.
Thomson Reuters - New York, NY 10/2011 – 12/2011
Lead Exchange Migration Engineer Consultant
Roles & Responsibilities
Provide 2nd Level Support for migration of users to Enterprise Vault (v10) Exchange 2010 environment.
Perform migrations of Exchange 2003/2007 mailboxes to new Exchange 2010 forest using Quest Migration Manager for 55,000 user mailbox environments.
Synchronization of Global Address List, Directories, and Mailboxes that reside in different AD Forest and Enterprise Exchange environments.
Responsible for user provisioning and de-provisioning of user accounts support residing in different AD forests using Centralized Web Portal.
Provide Blackberry 5.0 troubleshooting and user provisioning for Thomson Reuters staff.
ATOS/Siemens AG - New York, NY 04/2011 – 10/2011
Exchange/Active Directory Architect Level IV Consultant
Roles & Responsibilities
Responsible for the support and architecture of Microsoft Exchange 2007/2003 80,000+ Messaging infrastructure.
Support and administration of Lync 2010/OCS 2007 environment.
Support and process Enterprise Vault Server environment.
Configure and Implement Messaging Security, Compliance and Discovery, High Availability, Backup, and Recovery.
SharePoint 2010 migration from Lotus Domino Server and Exchange 2EK3/2EK7 Public Folders
Support and guidance for Tier II and III engineers supporting the platform.
Approve changes in the Exchange/AD environment using Change Management best practices.
Royal Bank of Scotland - Stamford, CT 04/2010 – 10/2010
Exchange Messaging Active Directory Consultant
Roles & Responsibilities
Utilize SCCM 2007 for security patching and SCOM 2007 monitoring of Exchange and Active Directory servers.
Modify and adjust SCOM 2007 rules to filter email and pager alerts.
Microsoft Exchange and Blackberry support during sale of Asia and European operations to JP Morgan Chase bank.
Migration of 1,100 Blackberry users from Blackberry Enterprise Server 4.1 to 5.0.
Active Directory support including Group Policy, DNS, AD security and certificate services, Global Catalog, WINS, DHCP, DFS support for user migrations.
Daily User Provisioning of Active Directory and Exchange of RBS Sempra user accounts.
Bank Leumi USA - New York, NY 07/2009 – 02/2010
Senior IT Infrastructure Consultant
Roles & Responsibilities
Install, configure and maintain Windows 2003/2008, Exchange 2003/2007, and Active Directory Infrastructure
Troubleshoot and resolve Active Directory, GPO, DNS, DHCP and Microsoft Exchange replication issues
Technical support for Bank Leumi Active Directory Users and Groups management
Provide Infrastructure support including VMware builds for server consolidation and virtualization project
Support NetBackup Management, Reporting and recovery monitoring
Define automated desktop deployment process for Windows 10
Support and deploy Microsoft SCCM 2007 and SCOM 2007 server deployment projects.
KPMG – US Messaging Operations - Montvale, NJ 12/2005 – 03/2009
Senior Exchange Messaging Engineer
Roles & Responsibilities
Built out lab for Exchange 2003, Exchange 2007 and Windows 2003, Windows 2008 AD Montvale Data Center Migration
Deployed Exchange 2003 SP1, Windows 2003 SP1, and MOM 2005 SP1 with Active Directory and Exchange 2003 Management pack.
Monitored and administered HP ProLiant DL 580/380 Windows and Exchange 2003 servers for 30,000 + mailbox environments.
Resolved Windows and Exchange 2003 server hardware break/fix issues and interact with IT Management, staff, and vendors.
Supported technologies surrounding email communication such as Postini SPAM filtering; Send Mail and Cipher Trust Iron Mail.
Tested and deployed Symantec Anti-Virus and Microsoft Exchange and Windows 2003 Security patches for production servers as needed.
Consulted with Security Administration Group to harden and build Virtual and Physical servers for migration to the new Data Center.
Built and Maintained Windows 2003 SP2 x64 and Windows 2008 servers using VMware ESX
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