Active Directory Security Engineer

Kareem U. Kaleem

***** ***** *****, **********, ** 22192

Cell: 703-***-****

Email: ******.******@*****.***

Objective:

To obtain a challenging position that allows me to utilize my skills and experience to their full potential as Active Directory and Exchange Administrator, in a growth-oriented organization.

Education:

Professional Degree in Electrical Engineering in Power Transmission and Distribution, George Washington University, Washington DC, 1991

MS, Physics and electronic Circuits, Punjab University, 1980

BS, Physics and Mathematics, Punjab University, 1977

Certifications:

Microsoft Certified Azure Security Engineer AZ-500

Microsoft Certified Azure Administrator Associate AZ-104

Microsoft Azure Fundamental AZ-900

Microsoft Certified System Engineer/MCSE 4.0

Microsoft Certified Professional/MCP Windows 2000

Novel Certified Network Administrator /CNA

CompTIA A+

CompTIA Security + CE

Clearance: DoD Top Secret Clearance with SCI Poly.

Summary of Relevant Experience

Ensured the availability, functionality, integrity, and efficiency of all provided services across the Marine Corps Enterprise Network (MCEN).

Deployed Virtual Machine, using Clones, Snapshots, Template and Jenkins tool, and then sync to vCenter.

Maintained ESX servers, vSphere client and VCenter server, and health check for VMs and ESX host.

Performed and troubleshoot the Citrix Infrastructure, ensured user have access to Citrix Workspace.

Provided directory services across the MCEN allowing users, computers, and application services a secure mechanism for authentication.

Managed Office 365 Messages system and provided On-site support for office 365 issues.

Managed Microsoft Active Directory (AD) and Windows-based systems across the enterprise, including directory and identity management solutions.

Experienced in the Installation of PKI Certificates on Exchange, Domain Controllers, VMWare Servers.

Installed, and Configured DHCP, DNS servers, created and tested zones for name resolution to ensure proper response from authoritative DNS server.

Monitored and resolved MS Exchange SCOM alerts for Central Site (Washington DC area) and overseas posts.

Experience:

Windows Server Administrator, DISYS/DEXIAN (Aerospace), Chantilly 09/27/2021to 4/1/2025

Developed Organization Units (OU) in AD and managed user security group’s policies.

Managed Microsoft Active Directory (AD) and Windows-based systems across the enterprise, including directory and identity management solutions.

Maintained ESX servers, vSphere client and VCenter server, and health check for VMs and ESX host.

Deployed Virtual Machine, using Clones, Snapshots, Template and Jenkins tool, and then sync to vCenter.

Performed and troubleshoot the Citrix Infrastructure, ensured user have access to Citrix Workspace.

Performed system monitoring using approved tools and processes to validate system health.

Created vulnerability report using Tenable tool, and then remediated the vulnerabilities of severs on weekly basis.

Followed established procedures in the management of user system access to meet security requirements.

Assisted in the system integration, hardware and software installation, configuration and disposition of servers and workstations to support the architecture.

Sr. Active Directory & Exchange Specialist, Leidos Inc., Pentagon, 02/02/2021 to 9/24/2021

Develops and documents systems administration standard operating procedures (SOPs) to be utilized within the Marin Corps Cyberspace Operations Group (MCCOG) and as informal instruction to MCCOG customers.

Ensures the availability, functionality, integrity, and efficiency of all provided services across the Marine Corps Enterprise Network (MCEN).

Represent Enterprise, Directory, and Messaging (EDM) on matters pertaining to the operation and defense of the MCEN.

Manage Office 365 Messages system and provided On-site support for office 365 issues.

Monitor mail queues, connectors, and ensured that mail storages were mounted on the exchange servers.

Built VMware Servers and promoted them to domain Controller and ensured the inbound and out bound replications are successful.

Develops Organization Units (OU) in AD and managed user security group’s policies.

Managed Microsoft Active Directory (AD) and Windows-based systems across the enterprise, including directory and identity management solutions.

Perform routine network administration and maintenance, such as creating/deleting user and Email accounts, assigning/revoking access permission to the users.

System Administrator, EPSILON Inc., Quantico, Virginia 08/17/2020 to 01/31/2021

Maintained ESX servers, vSphere client and VCenter server, and health check for VMs and ESX host.

Performed upgrades to operating systems and layered Software packages using Microsoft’s System Center Configuration Manager (SCCM).

Experienced in the implementation, administration, and configuration of SCCM Enterprise environment infrastructure.

Application Packaging for Windows 10 Environment including latest release.

Managed Microsoft Active Directory (AD) and Windows-based systems across the enterprise, including directory and identity management solutions.

Performed cross platform audits of Active Directory (AD) objects and user permission.

Performed Active Directory Services administration and management to include design, cleanup and routine maintenance and configuration.

Sr. System Administrator, PRISM, US CG, Alexandria, Virginia 12/17//2018 to 4/9/2019

Maintained ESX servers, vSphere client and VCenter server, and health check for VMs and ESX host.

Deployed Virtual Machines and using Clones, Snapshots and Templates.

Experience with Key Management Service (KMS)/Key Management Interoperability Protocol (KMIP) deployment and/or administration.

Experienced in the Installation of PKI Certificates on Exchange, Domain Controllers, VMWare Servers.

Managed Microsoft Active Directory (AD) and Windows-based systems across the enterprise, including directory and identity management solutions.

Performed cross platform audits of Active Directory (AD) objects and user permission.

Developed project plan, served as primary task resource, implemented, and migrated Virtual Domain Controller (DC) from Windows 2008 R2 to Windows 2012 R2.

Sr. System Administrator, SAIC, Dept. of State, Springfield, Virginia 5/2018 to 12/14/2018

Performed System Administration of Server System connected to local and wide area network.

DHCP Administration install and upgraded Enterprises DHCP servers.

Supported Centralized DNS and DHCP Administration using Infoblox.

Installed, Configured, and managed DHCP, and DNS servers, created and tested zones for name resolution to ensured proper response from authoritative DNS server.

Created DHCP Scopes using Windows and Infoblox.

Maintained current DHCP scopes and created both IP reservation and exclusion.

Provided user support on any IP related issues for both domestic and international sites.

Worked on the scope migration from Windows DHCP servers to Infoblox.

MS Exchange Administrator, Conceras Inc., Dept. of State, Washington DC 8/2013–05/2018

Managed Office 365 Messages system and provided On-site support for office 365 issues.

Maintained and supported Exchange/Office 365 (Account provisioning, migration from Exchange to office 365 and distribution group creation).

Troubleshoot and resolved end user email connectivity issues.

Monitored and resolved MS Exchange SCOM alerts for Central Site (Washington DC area) and overseas posts (Embassies and Consulates) all over the world.

Monitored mail queues, connectors, and ensured that mail storages were mounted on the exchange serve. Renewed the expired PKI Certificates of the servers globally

Performed routine network administration and maintenance, such as creating/deleting user and Email accounts, assigning/revoking access permission to the users.

Performed Mailbox databases/ Backups/ Repair/ Recovery using Avamar, Snap Protect, and Fast Back systems

Sr. Systems Analyst, Lockheed Martin, Pentagon, Washington DC 04/2004– 8/2013

Performed administrative task within Windows 2003 Server Active Directory and Exchange management console environment.

Performed cross platform audits of Active Directory (AD) objects and user permission. Developed Organization Units (OU) in AD and managed user security group’s policies

Managed Domain connectivity, Master Browsing, and installed configured TCP/IP (DNS, WINS, DHCP) servers. Maintain DHCP server scopes, reserving and excluding IP address for the server and printer.

Configuring, maintaining, monitoring and optimizing 400 SIPRNet and NIPRNet Virtual Widows 2000 and Windows 2003 servers.

Responsible for maintenance of ESX servers, VSphere client and Vcenter server, and health check for VMs and ESX host.

Certified Public Key Infrastructure (PKI) Local Registration Authority (LRA). Generated PKI Role based Certificates for organizational mailboxes, and ensured that Certifications are imported and then published on the Global Address List (GAL)

References: Available upon Request.

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