Exchange Engineer

Paul Okeke

adf1qn@r.postjobfree.com 917-***-****

Professional Summary

Experience in Microsoft Cloud Engineer, focused on collaborative services and transitional projects (From on-prem to cloud)

Cloud migration expertise with Microsoft applications (Exchange, Exchange Online, Skype-for-Business Online, Teams, One Drive-for-Business, SharePoint Data migrations)

Administering, Installing, troubleshooting, operating, testing, configuring and migrating messaging technologies in preparation for cloud

Complete experience and 100% certified in ITIL process such as Incident Management, Change Management and Problem Management

Knowledgeable in cloud security, migrations, and transformation practices

Experienced in Azure AD, Azure Sync, and Azure virtualization

Ability to multi-task and use creative and innovative skills.

Ability to work independently and work closely with others in a team.

Solid background in technical support and maintenance of data confidentiality, security; design and expand strategic business planning process for program expansion and partnership.

Strong analytical skills; able to work with technicians from various engineering disciplines to troubleshoot complex system-level issues.

Utilized email security tools such as Domain Keys Identified Email (DKIM), Sender Policy Framework (SPF),and Domain based Message Authentication Reporting & Conformance (DMARC)

CRUD (Create, Read, Update/Modify, Delete/Remove) accounts using PowerShell Scripting.

Automation and scripting via PowerShell, Policy adherence, and Azure Service Reporting

Good knowledge with Backup and Restore Procedures and applications

Capable of working independently or a team with little or no supervision: solving problems asking relevant questions to customers and messaging engineers in relation to problem resolution.

Adept using Microsoft Visio drawing, with ability to learn new drawing technologies faster.

Ability to author and present information and provide advice to stakeholders on proposed solutions including: Azure Active Directory, Internal/External DNS, networking, Public/Private Certificates, Exchange Online, SharePoint Online, Unified Messaging, Skype Online/Lync/Teams end-user and administration.

Experienced with administration of Windows Server, Skype/Lync/Teams, Exchange, Azure AD and other Microsoft server and desktop technologies.

Understanding of: TCP/IP networking technology (switch, router, and firewall), Reverse Proxy, Load balancers, and Office 365, SIP, VOIP, Hyper-V, and SAN solutions.

Experience in troubleshooting of Teams/Skype/Lync platform systems, VoIP interconnections, SIP telephony, and Carrier or PBX interoperability

Fluent English speaking and writing. French, Spanish and other languages would be appreciated.

Responsible for designing, developing, testing, implementing, installation, configuring,maintaining and supporting complex components of the Windows infrastructure using knowledge of Cisco Design Architecture (CCDA)

Microsoft Office 365 Design, implementation, migrations and administration

Active Directory design, implementation and administration

Microsoft Identity Manager implementation, design and administration

Implementation of Windows security/system hardening for Windows operating system

Management and support of certificate authorities

Monitoring, performance tuning, security updates and disaster recovery and Business continuity plan.

Knowledge Transfer (KT) documentation of system configuration and standard operating procedures of Migration processes, Server Backups and Weekly Reports.

Technical Skills

Email Systems: Exchange 2010, Exchange 2013, Exchange 2016, Exchange 2019, Exchange Online, Office 365(OneDrive for Business, SharePoint. Yammer, Planner), AD connect Hybrid Configuration Wizard (HCW)

Messaging Systems: Lync 2010, Lync 2013, Skype for Business 2015, Skype for Business Online/Teams

Operating Systems (OS): Microsoft Windows Server 2008, 2012, 2016, 2019, Windows 7, Windows 8, Windows 10.

Virtualization Infrastructure: VMWare, Hyper-V, Oracle Virtual Box, Windows Virtual Machines

Scripting: PowerShell ISE, Microsoft Exchange Online PowerShell Module.

Enterprise Software: Symantec Backup Exec, SAN, NAS, UPS, Dell & HP system Management and Inventory, McAfee & Symantec Anti-virus, Windows Defender

Directory Services: Active Directory Administration, Group Policy (GPO), Active Directory Migration Tool (ADMT), Active Directory Federation Services (ADFS), Azure AD, AD Connect (DirSync), ADDS.

Identity Management: Microsoft Identity Manager (FIM, MIM 2.0 & 3.0), Microsoft Identity Integration Server (MIIS), Multi-factor authentication (MFA), Azure Privileged Identity Management (PIM)

Networking: IPv4, DHCP, DNS, Cisco Routers and Switches, Cabling, Data Drops, Wi-Fi Access management, SIP, UDP, QoS, Network Load Balancing (NLB)

Software: Office 365 (E1/E3/E5), Microsoft Office 2016, Office 2013,Office 2010, Visio, MSToolbox, Microsoft Remote Analyzer, Wireshark,, Fiddler, Snooper, Team Viewer, P-Spice, BitTitan,Ms. Project and many more.

Disaster Recovery Plan (DRP)/ Business Continuity Plan (BCP): Design and Implementation, Symantec Backup (Full, Incremental, Differential), Restore, RPO (Recover point objective), RTO (Recover Time objective).

Database: SQL Servers, RTC, Monitoring, Archiving, Report Server Databases, Database Compare. Azure Backup

Mobile Devices: MDM, ActiveSync, Intune, Android, iPhone, Blackberry

Monitoring: Solarwinds, Systems Center Operations Manager (SCOM),Microsoft System Center Configuration (SCCM), MS NetMon, Splunk, Azure Resource Manager

Security: Windows Firewalls with Advanced security, Cisco IronPort, Patching for Compliance. Exchange Online Protection, Advanced Threat Analytics, Azure Advanced Threat Protection, Windows Defender, Azure Information Protection

Other Technologies/ Protocols: E-Policy, WSUS (Windows Server Updates), Event Archiver, Event Viewer, Event Alarm, LAN, WAN, TCP/IP, UDP, SIP, DNS, DHCP, SANS, SMTP, POP3 Utility (host-gator mail), IMAP4

Professional Experience

Dec 2018 – Present

Senior Cloud Migration Architect

Montefiore Medical, Brooklyn, NY

Project: Migration from Exchange 2013 on-prem to Exchange Online in a cloud migration effort

Responsible for upgrading the entire Exchange farm from Exchange 2013 on-prem to Exchange Online with Azure services

Outlined and Prepared cloud structure for data migration into Azure, Office 365, and AD components

Prepared for use of Exchange Online, SharePoint, OneDrive for Business, and Teams platforms for cloud collaboration services

Tested creation of Azure AD servers and templates for virtual Windows Servers

Configured Intune for MFA enforcement and device registration with Azure

Installed an additional Windows servers and to prepare for Exchange hybrid

Ran prerequisites and applied updates and patches to existing Windows servers on the Exchange farms in preparation for the migration.

Secured Office 365 hybrid (connectivity, sync services, and authentication)

Implemented authentication methods for cloud and Azure (sign-on security, multi factor authentication (MFA), device sign-on methods, managed/modern authentication

Worked to implemented Azure Advanced Threat Protection capabilities with company’s Advanced Threat Analytics

Configured Windows virtual desktops with Azure and Hyper-V

Provided recommendation for Azure Infrastructure Security

Assessed physical security, availability, and operations to provide monitoring and data protection with the on-prem and cloud hosted infrastructure

Leveraged Azure Express Route services for domain and network configurations and validation

Worked hands-on with other equipment and technologies such as Hyper-V Workstation and set up virtual servers to testing in Azure

Ran health checks on the current deployment and reported to management on current infrastructure and needed changes

Ran Microsoft Best Practice Analyzer (BPA) and noted suggested configuration alterations

Managed policies between SharePoint, OneDrive and Azure

Tested load balanced configuration to ensure proper routing of connections

Checked for mailbox corruption on source servers and made repairs before migration.

Troubleshooting of issues with database copies and lag in replication; backups of Active Directory and use of Active Directory to prepare user data for migration.

Designed, implemented, and maintained virtual infrastructures including VMWare, Hyper-V, and Azure

Created batches (Test and Pilot) for user mailbox accounts and moved them via PowerShell scripting to the new cloud environment

Migrated test accounts to Exchange Online and verified mail flow, policies, rules, permissions and other functionalities.

Configured Retention Tags and Policies such as DLP in Exchange Online.

Troubleshooting of issues with Exchange mailbox moves, monitored bandwidth and migration progress, and reported on status and any changes in planning that were necessary.

Decommissioned Exchange 2013 after successful shut-down period of the server.

Made a Knowledge base and Technical Documentation of the whole migration.

Planning and architecture for O365 migration from exchange to cloud.

Batch creation, shared mailbox planning and policies creation in O365 tenant.

Creation of DLP policies, DKIM, DMARC, SPF and retention policies.

AIP implementation, License management for tenant and policies for securing the tenant.

Migrating Skype on prem to Teams only mode for all of the company.

Managing Teams channels, bots, apps and conferencing policies with Live Events.

Integration of Teams with Polycom Trio devices.

Managing Zoom for the company and handling decisions for license assignment and end user support.

Oct 2016 – Dec 2018

Microsoft Messaging /Cloud Security Engineer

Sherwin Williams, Concord, CA

Project: Microsoft Office 365 tenant to tenant migration.

Responsible for design and plan the tenant to tenant migration using BitTitan.

Lead initiative of full cloud migration effort in a merger and acquisition

Verified the source domain in the Office 365 admin center, added the source domain and created TXT records in Domain Name Systems (DNS) for verification.

Implemented Azure object sync for the source tenant

Allowed the system to check for verification to allow the DNS record time to propagate over the next few days and obtain final validation will occur later in the process.

Created master list of user mailboxes you want to migrate.

Created mailbox mapping .CSV file for the migration tool (BitTitan) to match the source mailbox with the target tenant mailbox when migration occurs.

Removed all Skype for Business licenses from the users in the source tenant using Skype for Business admin portal. This will remove the Sip address connected to the domain.

Reset default email addresses on Office 365 source mailboxes to the initial domain.

Reset default email addresses on all Distribution Lists, Rooms and Resources to the initial domain in source tenant.

Lead discovery and initiative of leveraging Cloud infrastructure (PaaS / IaaS)

Recreated cloud security policies on new tenant to mirror permissions and policies from source

Removed all secondary email (proxy addresses) from user objects that are still using the primary domain.

Set default domain in source tenant to routing domain.

Used Windows PowerShell to retrieve a list of all objects that are still using the domain and blocking removal.

Configures access to cloud environment via ADFS, claims rules, Intune and conditional access policies

Ensured data protection through data loss prevention procedures, retention, classification, and data holds.

Enforced MFA policies for mobile devices and investigated areas of compromise

Ensured compliance with company policies and standards through reporting and audits.

Configured the new domain in target tenant for AD FS.

Configured claims rules for authentication requests for access

Ran security reporting on vulnerabilities and assessments of risks

Activated mailboxes in the target tenant and assigned licenses to all of the new user accounts.

Set the domain as the primary address on the new users with PowerShell.

Used password hash sync feature, pass-through authentication to set all mailboxes.

Once mailboxes were licensed and active, transitioned the mail routing.

Skype to Teams migration and support for Teams issues on O365.

November 2013 – Oct 2016

Microsoft Exchange/Cloud Engineer

Pearson, Portland, TN

Project: Migration from Exchange 2013 on-prem to Office 365 Hybrid

Met with stakeholders and project manager to gather requirements for new hybrid communications environment.

Analyzed current environment consisting of Windows server 2012, Exchange 2013 with Outlook client.

Reported on compromised accounts, failed log ins and authentication requests, and bad tokens

Planned new environment analyzing needs and determining licensing needs, virtual servers and tools needed for migration, and set-up a safe test environment using Microsoft Hyper-V.

Configured DirSync (Azure AD Connect) and ADFS for Active Directory synchronization/Federation with Azure Active Directory.

Created test accounts and did a pilot migration.

Rolled-out implementation of Exchange Online and Office 365.

Utilized the Hybrid Configuration Wizard (HCW) on Exchange 2013 to establish send and receive connectors with Office 365.

Created migration batches in the Office 365 Admin Center, and used PowerShell to check the status of the migration, and get statistics.

Troubleshot migration errors, such as failed mailbox moves, and connectivity errors, etc.

Assigned Enterprise licenses (E1, E3, and E5) in Office 365 using PowerShell.

Provided hyper-support to users post migration.

Created Knowledge Transfer (KT) documentation in plain English with simple procedures and troubleshooting guidelines, and did some “Train the Trainer” training with the help desk team.(L1)

Assisted with Exchange messaging system administration while training technical staff in daily administration and troubleshooting.

Troubleshooting of connectivity issues, calendaring, and Active Directory issues

managing groups, permissions., and shared mailboxes

Maintaining high availability through DAG Replication for the On Prem environment.

maintaining services and configuration

creating and managing distribution groups, and security groups

Troubleshooting load balancing issues causing client connectivity and latency issues in Exchange system.

Designing and Planning Lync 2013 migration to Teams for IM, A/V, and Enterprise Voice services.

Management and troubleshooting of the Lync 2013 server infrastructure consisting of both physical and virtual servers for the On Prem environment.

Managed tickets and requests L3 for related to Exchange and Lync using the Remedy ticketing system to track, update, and resolve.

March 2010 – November 2013

Exchange Engineer

Penske, Rockville MD.

Project: Migration from Exchange 2010 on-prem to Exchange 2013 on-prem

Analyzed on premise Exchange metrics and used the Exchange calculator to design and plan for the Exchange migration.

Installed Windows server 2012 and ran prerequisites, Patches to prepare for Exchange installations.

Worked hands-on with other equipment and technologies such as Hyper-V and WM Workstation, and utilized Hyper-V for server virtualization.

Updated Exchange 2010 to Service Pack 3 to establish coexistence with Exchange 2013.

Created connectors for relay email from internal apps.

Designed, implemented, identity and access management system with a parallel deployment and migration to a highly available platform.

Responsible for creating batches of users, via PowerShell, to move Exchange 2010 mailboxes to Exchange 2013 mailboxes.

Migrated remaining user mailboxes to Exchange 2013 email system and validated functionality.

Installed the Exchange Server 2013 Client Access Server to work with Exchange 2013 Mailbox Server.

Education

Covenant University 2003 - 2008 (B-Eng. Electrical/Electronic Engineering)

University of Lagos 2011 – 2013 (M.sc Industrial and Labor Relations MILR)

Certifications

Information Technology Infrastructure Library (ITILv3)

Cisco Certified Design Associate (CCDA)

Train the Trainer (TTT) Certified.

COBIT 5(in-view)

Working in Hazardous area certificate.

Fire Awareness and Safety Training certificate

Basic first Aid training certificate

Automated External Defibrillator (AED) Training certificate

Microsoft Azure Fundamentals (AZ-900)

12 years Information Technology

10 years of experience in Microsoft Messaging

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