We provide IT Staff Augmentation Services!

Sr. Active Directory Admin Resume

3.00/5 (Submit Your Rating)

Los Angeles, CA


  • Highly experienced professional with 9+ years of experience in managing end - to-end Office system applications.
  • Expertise in managing server infrastructures and data-center operations across UNIX, Linux, Windows and Mac OS X platforms.
  • Effectively installed, configured and optimized IT infrastructures to achieve high availability and performance.
  • Expertise in Active Directory design and support (GPOs, AD Schema, OUs, LDAP, Sites, Replication, etc.)
  • Experience in Installing Firmware Upgrades, kernel patches, systems configuration, performance tuning on UNIX/LINUX systems
  • Installation and configuration of Jboss, Web Sphere 5.1/6.0 Application Server on Solaris and Linux boxes.
  • Experience in updatingActive Directory Sites and Services.
  • Experience in PowerShell scripting.
  • Experience in creating and maintain group policy objects for Windows servers host access.
  • Experience in creating and maintaining documentation used in the installation, configuration, operation and maintenance of systems hardware, operating systems, and related infrastructure.
  • Used VMware for testing various applications on different operating system.
  • Monitor performance of Windows Server environment and take appropriate proactive measures to prevent impacts.
  • Design and develop specialized automation tools, scripts, and processes for the administration and performance monitoring of Windows system
  • Experience in implementing Group Policies at domain level, OU levels to satisfy various security needs in the enterprise.
  • Experience in GPO for securing/ locking workstations. Setup policies with GPO.
  • Experience managing Servers, PCs, Laptops, and Printers & Peripherals.
  • Experience in troubleshooting Office 365 client end issues.
  • Successfully Migrated to Windows 2008 R2 x64 Active DirectorySingle Forest and Domain Architecture.
  • Implemented successful migration for 1000s of User, Computer and Group accounts with SID History.
  • Created AD Group policies to Enforce Domain and OU Level Security of Users and Computer objects.Extensively worked on organizational setup, site creation and maintenance, workflows, data management, user management, migration and integrating existing systems successfully into the Office 365 environment with design requirements.
  • Expertise in implementing and administrating Active Directory, Security, Group Policy, ADAM and LDAP configurations on enterprise IT systems.
  • Installing, Building and Configuring Red Hat Enterprise Linux (RHEL7) using PXE Kickstart Services.
  • Proficient in setting up Microsoft Exchange Server, Outlook Web Access (OWA) /Web Mail and Exchange Push Mail for mobile applications.
  • Experience in Implementation and Migration of Skype for Business, Lync 2010/2013, Exchange 2013/2010, Active Directory 2003/2008/2012 , System Center 2012 etc.
  • Experience in installing and configuring Virtualization technologies like VMware, vSphere 5.X, Hyper-V and others.
  • Involved in migration and implementing Security and Infrastructure solutions using Netegrity SiteMinder 5.x to 6.0, 6.0 to 12.x and Sun ONE Directory Server (LDAP) 5.x/6.x.
  • Expertise in analyzing the logs (trace logs, logs) and Trouble Shooting issues in Integration of other applications using CA SiteMinder (Access Management) and Identity Management tools along with LDAP and Web-server agents.
  • Generated many Powershellscripts to aid the Security Team's management of AD
  • LDAP queries and changes through Powershell.
  • Worked on Configuring the Domains, User directories, Rules, Realms and Policies.
  • Created the Realms and Policies under the Domains.
  • Created and maintained Group Policies (GPO) within the 2008 and 2012 environment. Created numerous GPOs from setting password change to 90 days to creating a GPO for a single machine to allow only a single user to log in to a particular machine.
  • Secured production environments by setting up Linux users, setting up Kerberosprincipals.
  • Strong experience with cluster security tools such as Kerberos Ranger and Knox.
  • Configuring Linux clients (SSSD/nslcd) with AD integration and for authentication via Active Directory services.
  • Experience in integrating Linux systems to an Active Directory Domain. This includes SSSDand REALMD to connect to an Active Directory.
  • Creating OpenSSL Certificates and using the same for Federation of external Services to achieve the purpose of maintaining confidentiality, message integrity and bilateral Authentication.
  • Supported multiple privileged access management (PAM) projects to assist United Health care Group reduce security risk and enhance security posture within the enterprise while ensuring compliance with internal security policies, SOX, PCI, PII, HIPAA.
  • Managed security Access Management control functions for Brinker corporate & franchise restaurants.
  • Provided Identity & PrivilegedAccess Management (PAM) administration across various operating systems.
  • Updating and installing current security programs such as Traps, Lumension, and Snare; while also removing old software such as Trend Micro and OPENSSLsoftware.
  • Installed packages and patches using Red Hat Satellite servers.
  • Experience in setting up Group policies, Patching, Security updates and Microsoft Security updates on Windows servers.
  • Support multiple AD forests, including multiple domains forest with over 10 domains, 60 domain controllers and 40 AD sites, running on Windows 2003, Windows 2008, 2008 R2 and Windows 2012
  • Proficient in PowerShell scripting and process automation.
  • Experience deploying clustering services like CCR, SCR and LCR.
  • Training end users in the operation of the PKI hardware and software.
  • Working on Installation and configuration of WebSphere Application ND V8.0.5, on Windows 2008, RHEL 6.5 and Amazon Web Services (AWS).
  • Hands on experience with ansible tower dashboard to create projects, inventories templates and run jobs for RHEL and windows servers.
  • Evaluate and test products and solutions related to PKI, authentication and authorization services, smart
  • Experienced in communicating effectively with clients to handle business problems, and excellent organizational skills.


Application Systems: SharePoint, Microsoft Office products, TCP/IP DNS/WINS DHCP, Lotus Notes, Office 365 Pro Plus

Server Admins: MS Windows Server, MS SharePoint Server, MS Office Communication Server, PowerShell Scripting, Hyper-V Server Administration

Operating Systems: Windows NT, 2000/ 03, Windows XP/Vista/7/8/8.1/10, MacOS X, Linux, Ubuntu

Virtualization: VSphere 4.1, VSphere Client, VCenter, VMotion, Storage VMotion, VMware Update Manager, VMware Tools, VMware Converter, VMware ESX (5), ESXi & vSphere (5, 5.5 & 6), Hyper-V

Office 365 products: Active Directory, Lync, PKI, Azure Active Directory, PowerShell etc.

Networking: TCP/IP, Routing and Switching, FTP, SMTP, POP and HTTP


Confidential, Los Angeles, CA

Sr. Active Directory Admin


  • Coordinated the design, development and implementation of the Enterprise IT Infrastructure using ITIL practices.
  • Experience in implementing, administering, supporting ADFS, DNS, DHCP, WSUS, NFS.
  • Experience in promoting and decommissioning Domain Controller.
  • Experience in analyzing and designing strategies for Active Directory groups cleanup.
  • Experience with configuring Group Policy Objects to secure a Windows infrastructure.
  • Managed all domain user accounts and groups in Active Directory.
  • Assisted in deployment of complete Office 365 suite, and performed support duties after migration.
  • Configured DirSync and ADFS Servers for synchronization and single sign-on (SSO).
  • Patched the on Premise Exchange 2016 servers and prepared for hybrid set up.
  • Actively maintained end user mailboxes and e-mail settings, including the connectivity with Outlook and Lync.
  • Created and maintained Group Policies (GPO) within the 2008 and 2012 environment. Created numerous GPOs from setting password change to 90 days to creating a GPO for a single machine to allow only a single user to log in to a particular machine
  • Provided support in troubleshooting issues for end users remotely utilizing Remedy ticketing system.
  • Effectively administered end-to-end Office 365 hybrid and Exchange 2016.
  • Designed mail flow and requirements for external connectivity including. OWA, ActiveSync and Outlook anywhere.
  • Performed setup of ADFS 3.0 and ADFS proxy servers; WAP server and Directory Sync Server.
  • Supported end users with networking connectivity concerns, licensing issues and applications issues with Lync, Skype for Business etc.
  • Utilized custom PowerShell scripts to support Exchange Online Configuration and Email migration.
  • Configured Lync online and Technical Add-on for Exchange Unified Messaging.
  • Supported end users with Geo-ADFS and ADFS client access policies and add-on designs.
  • Created virtual servers for hybrid servers using VMware and Hyper-V.
  • Provided troubleshooting to ADFS authentication and directory synchronization.
  • Generated migration status reports and tracked migration status using the Migration dashboard in the Exchange Administration Center (EAC).
  • Performed end-to-end user functionality testing after migration.
  • Assisted with establishing and setting up SCOM practices and Implemented system upgrades enhancements.
  • Worked on MDM to administer mobile devices including Smartphone’s, tablets, laptops and desktop computers.
  • Assisted users with Incident/problem determination and resolution on a 24x7 support basis.
  • Ensured all Office 365 products installed on client IT systems has end-to-end optimal performance, capacity and availability.
  • Performed Service Requests and Incident responses based on Standard Operating Procedures.
  • Analyzed business capabilities and requirements on SLA, OLA adherence, performance, availability and change management.
  • Supported SMTP routing, Active Directory, Mail Routing, Exchange and SMTP Troubleshooting and IIS (Internet Information Services) Administration.
  • Utilized Service Now ticketing system to manage and escalate problem resolution of assigned tickets.
  • Provided Exchange Server administration both on Windows and Mac operating systems.
  • Designed and defined messaging architecture on MS Exchange, Online (Office 365) and Onpremise (Exchange 2010) with migration.
  • Worked on Microsoft cloud platform optimization and troubleshooting of Office 365 products.
  • Monitored migration reports to track batches created for user accounts to move mailboxes to Office 365 using PowerShell.
  • Worked on all phases of the SDLC and methodologies like waterfall and Agile.
  • Applied security patches, updates and service packs to support Onpremise Exchange servers for migration.

Confidential, San Jose CA

Active Directory Admin/ Sr. Office 365 Administrator


  • Provided expert support in the planning, requirements gathering, implementation of data migration and configuration of Office 365.
  • Troubleshooting on AD trust related issues.
  • Troubleshooting Active Directory permissions.
  • Creating group policy objects as per security requirements.
  • Identifying and cleaning stale records in AD environment.
  • Identifying uncertain AD groups and cleaning up accordingly.
  • Worked and resolved issues on Azure AD relating to Office 365 identity and user permissions
  • Utilized PowerShell to provide licenses and managed sites, groups, user accounts etc.
  • Worked on Exchange Online and SharePoint migration tasks including data migration, team site configurations, content management, workflows, site permissions, user adoption and change management.
  • Work closely with the AD group to test GPO’s in the test environment to verify the GPO is performing the way it is intended prior to moving into production environment.
  • Utilized Windows Azure to synchronize local password to domain for Office 365.
  • Updated exchange protection configurations, site security configurations and SharePoint configurations to ensure successful migration.
  • Gathered business IT requirements, analyzed, and documented project activities utilizing Agile based project methodology.
  • Worked on deployment of hybrid Office 365 environment with upgraded Exchange 2013 environment.
  • Successfully migrated all System Center Configuration Manager (SCCM) 2007 to SCCM 2012.
  • Monitored SCCM2012 with its boundaries, metering rules, site settings and distribution points.
  • Supported Active Directory Federation Services upgrade from ADFS 2.0 to ADFS 3.0.
  • Performed Exchange 2007/2013 Server management with advanced trouble shooting of hardware & Office 365 applications.
  • Experience in Implementation of authentication in CyberArk using LDAP, RSA SecureID, RADIUS
  • Performed various Office365 administrative roles in Exchange Control Panel (ECP), Skype for Business (SFB), Password management, Exchange and Security management.
  • Worked on multi factor authentications in CyberArk using LDAP, PKI, RSA SecureID, RADIUS, Oracle SSO.
  • Successfully implemented upgrade from Forefront Identity Manager (FIM) to Microsoft Identity Manager (MIM) 2016.
  • Maintained documentation for all the deployment related steps of the Microsoft O365/Exchange and Messaging-computing environment.
  • Implemented Office 365 Tenant implementation with Azure AD Connect and ADFS for Single Sign-On (SSO).
  • Configured and Implemented Directory Synchronization and Forefront with troubleshooting support.
  • Configured DirSync and ADFS for Active Directory synchronization and single sign-on (SSO) with Office 365.
  • Installed configurations on client machines for Exchange Online, email migrations and Lync online.
  • Configured and deployed new Anti-Malware polices for System Center Endpoint Protection (SCEP)
  • Utilized RSA Security Manager and managed multiple users for Multi-Factor Authentication.
  • Managed IIS 6.0 and IIS 7.0 server clusters and services across multiple sites and domains.
  • Worked on setting up rules for SPAM black and white list in the cloud and TLS connectors.
  • Assisted users w/ Change Mail Client, Full Mail Client, and Functional Shared Email Mailbox Requests.
  • Supported anti-spam filtering, logging, email tracking and transport rules.
  • Successful migrated from an onsite physical server to a cloud based virtual server using VMware ESXi 5.0.
  • Worked on Troubleshooting issues to support users on Skype for Business.
  • Utilized SharePoint to maintain backup and migration process improvement feedback for Office 365 Managing Distribution Lists.
  • Performed scripting and reporting tasks using PowerShell.
  • Efficiently worked on troubleshooting installation, network connectivity, certificate validation, DNS Record issues, and integration issues with Lync and Office 365 products.
  • Installed on premise servers for single sign on (SSO) and directory synchronization.

Confidential, Tempe, Arizona

Office 365 Administrator


  • Provided expert support on Azure AD Connect, ADFS and Single Sign on (SSO).
  • Managed Microsoft Exchange Online/Office 365 tenant installation and user management
  • Supported end users in applications including SharePoint Online, MS Lync (Skype for Business), Windows Server Management (2008/2012), Hyper-V 2012 and Windows Desktop Management (Windows 7 - 10).
  • Managed all domain user accounts and groups in Active Directory.
  • Performed installation, configuration, patching, upgrades and other server setup/maintenance as required
  • Installed and maintained network devices, client endpoints, desktop imaging, printers and scanners
  • Implemented and maintained an Active Directory Environment supporting end users within a Production Environment.
  • Assigned and managed user permissions for Calendars, Folders, Full Access, send as, and added Shared Mailboxes to users on Outlook
  • Supported both physical and virtual system/server integrity.
  • Supported and administered VMware virtual environment on enterprise IT systems.
  • Implemented and managed system backup and DR strategy
  • Managed projects for several roll-out & implementation initiatives until completion
  • Developed, documented and maintained appropriate system policies, procedures, processes and associated training plans
  • Worked on setups, Domain creation, DNS transitions, Data/E-mail migrations, and hybrid configurations.
  • Reviewed the effectiveness and efficiency of existing systems and implemented strategies for improving IT systems.
  • Assisted in gathering requirements and specifications for business needs and provided support to ensure smooth implementation.
  • Supported post implementation issues of new hardware/software and SaaS deployments.
  • Deployed Microsoft SharePoint server to provide companywide intranet collaboration site
  • Analyzed on-premises environment and the steps needed for a successful deployment.
  • Coordinated and performed tests, including end-user reviews, training, debugging and other post-implementation support activities.


Microsoft Exchange Administrator


  • Provided engineering and administrative support throughout the enterprise IT environment.
  • Implemented large-scale Active Directory/Exchange 2007/2010, Lync 2010 configuration, migration.
  • Worked on OS upgrades in Windows Server 2008 environment to Windows Server 2012
  • Provided Active Directory Management and Support at Enterprise level.
  • Manage and monitored all email platforms and interconnections.
  • Worked on Installing and configuring Lync servers within the IT environment.
  • Trouble shooted access and network connectivity issues for client desktops and Laptops.
  • Monitored network using SNMP, monitoring tools, Cisco CLI and trace routes for debugging.
  • Configured server roles, recipients, groups and mailboxes while exchange setups.
  • Monitored, managed and troubleshoot using tools such as protocol logs, event viewer, MMC, exchange management shell, PowerShell, message tracking tool, regsvr32, regedit, regedt32
  • Provided E-Mail technical support and analysis to local and global systems at the Enterprise level
  • Provided support and administration of the Active Directory (AD) in a Windows 2008/2012 Server distributed environment.
  • Provided technical support to clients regarding the resolution of product hardware, software and operating system issues via phone or remote access for all supported applications or products.
  • Maintained and managed Exchange components including Exchange Database, Public Folders, Offline Address List, Free/Busy Information, Outlook Web Access and Mail Flow administered DHCP Server creation and configured router IP address.
  • Installed database upgrades and resolved tickets with technical issues.
  • Improved performance by utilizing high availability techniques including continuous replication, network load balancing, single copy clustering etc.


System Administrator


  • Worked with x86 / x64 Intel, HP, IBM & Dell hardware servers and other peripherals.
  • Upgraded vSphere 4.x to vSphere 5.x including vCenter Server, hosts, Update Manager and Nexus 1000v
  • Installed, configured and administered Microsoft SQL Server including performance tuning.
  • In-depth knowledge with Database Creation, Security, Replication/ Migration, Performance Monitoring, User Management, Backup/Restoration, Import/Export, Transact SQL, Microsoft SQL Clustering, SQL Query analyzer and profiler.
  • Installed & configured Active Directory service with existing Windows version.
  • Installed and configured VMs on vSphere4.x/ 5.x platforms and also resolved network connectivity issues.
  • Installed and managed Symantec Endpoint protection software on servers and clients.
  • Created and Managed VMware cluster with HA and DRS including resource pools, performance of ESX servers.
  • Utilized Virtual center server and managed VMotion migration and cold migration.
  • Provided helpdesk support using BMC remedy ticketing system, inventory and system reporting.
  • Analyzed complicated network issues with servers, application and databases and tracked its impact to effectively meet daily business needs.
  • Participated in the migration planning, developing and testing prior to moving into production.
  • Created VM’s using existing template and also created templates with VM’s
  • Monitored performance tuning for ESX Servers, Virtual Center Server and VMs.
  • Installed and performed VM Backup and Replication for virtual machine backup. Management.

We'd love your feedback!