SUMMARY

• Proven Senior System Administrator with 9 years of multi - platform experience. Proven skills in Planning, Design and Implementation Enterprise Microsoft Active Directory, Exchange & Lync Infrastructure. Proven history in monitoring, managing and troubleshooting exchange backups.
• Hands on Experience in administration of Microsoft Exchange 2003/2010/2013 , Lync 2010/2013 and building Windows 2003/2008/2012 Active Directory infrastructure
• Strong System Analysis, Design skills and experience with issues related to IT Infrastructure in compliance with ITIL framework.
• Experienced in monitoring and management of Enterprise infrastructure hosted over VMware ESX and Microsoft Hyper-V virtual environments.
• Experienced in configuring, management and restoration of exchange data using Symantec, CA and Dell App Assure backup solutions.
• Led and mentored teams to support 24x7 operations for smooth running of the Infrastructure.
• Trained incoming System Administrators that managed servers, switches, and telephone systems in the Unit.
• Wrote Standard Operating Procedures (SOP) for the Information Technology shop
• Coordinate, monitor, and troubleshoot to isolate and diagnose common and unusual server problems: documented system events to ensure continuous functioning. Recommend course of action and implemented as approved.

TECHNICAL SKILLS

VMware ESX/VSphere and Virtual Centre: Fair Understanding of the VMware ESX 4.X & 5.X Infrastructure Components Creation of new templates for building new VM s in VMware infrastructure using customized wizards. Configuring and Managing Virtual Machines from the virtual centre console.

Monitoring Tools: Manage Engine Manager (8/9), SCOM (2007/2012), Solar winds & Orion.

Backup Software: CA ARC server Backup r11.5 /r15.0, Symantec Net backup, Backup Exec 12.5,14

Ticketing Systems: BMC Remedy, CA Service Desk, Request, Pega s Ticketing/ Service Management tool.

Monitoring Tools: Manage Engine Manager (8/9), SCOM (2007/2012), Alert site, Key notes, Solar winds & Orion

PROFESSIONAL EXPERIENCE

Confidential, Massachusetts

Senior Systems Administrator

Responsibilities:

• Primarily responsible for managing the Active directory, ADFS, Exchange and Lync 2013 server Infrastructure located in Pega’s Primary and secondary Datacentres in US and India locations.
• Monitoring the health and troubleshooting issues with Domain Controllers, Application servers, Exchange and Lync 2013 Servers distributed across US and India based on alerts triggered from SCOM 2012.
• Administration of more than 5000+ user mailboxes hosted in exchange 2013 environment.
• Responsible for troubleshooting and management of two separate exchange 2013 DAG environments configured across 12 servers.
• Planning, Implementation and administration of mailbox, Journaling databases and management in exchange 2013 servers.
• Configuration of Outlook Anywhere, auto discover, Active sync, OWA, mail flow, Email Address Policies, Message tracking and message size restrictions in 2013 DAG environment.
• Troubleshooting MS Exchange server issues related to DAG (Database Availability Group), Mail flow, OWA and Networking.
• Creating and management of dynamic distribution groups in the organization and movement of exchange Mailboxes in exchange 2013 environment.
• Resolving disk space issues related to exchange server caused due to increase in database size and log drive across DAG members.
• Anti-spam filter management using enterprise products such as Barracuda appliances and Mime cast cloud control for Whitelisting of recipients and email administration.
• Upgrading the exchange 2013 servers with the latest cumulative updates and conducting quarterly DR maintenance exercise.
• Configuring Active directory sites and services, site links as per the requirement and troubleshooting Group policy GPO issues, DC replication issues etc.
• Configuring of Lync 2013 front end servers and installation of s in Lync 2013 FE and edge servers.
• Implementation of QOS in Lync 2013 environment to enhance the end user experience during screen share and conference calls.
• Integrating Exchange 2013 OWA with Lync for IM presence.
• Patching the Lync 2013 server infrastructure by following standard operating procedures.
• Delegation of repetitive tasks to L1 & L2 teams by documenting the steps and preparing SOP’s.
• Configuring of new 2012 R2 domain controllers, installing new DHCP servers and replication of DHCP scopes for load balancing/high availability.
• Troubleshooting DNS issues and DNS record management for different zones in the domain and tracking the respective changes using Change Request.
• Monitoring and troubleshooting issues with Server down/hung/not responding, Disk Space on both physical and virtual servers hosted in VMware Esxi 5.5 environment.
• Design and implement Azure AD, Azure Virtual AD FS, Virtual AD FS Proxy and Virtual Azure Domain Controller and set co-existence with on premise network.
• Perform RCA to the problems and incidents reported across the exchange and Lync 2013 environment.
• Responsible for configuring and maintaining Accellion secure file transfer and Cerberus FTP servers used by external customers for uploading huge files.

Confidential

Senior Analyst

Responsibilities:

• Responsible for resolving high priority (P1) issues by engaging respective teams if needed.
• Troubleshooting Spam email issues using Iron port.
• Providing 24X7 administration of more than 7000 Enterprise Servers, which includes Exchange servers, Domain Controllers, Global Catalog and Application Servers distributed across the globe in varied physical enclosures, virtual (VMware and hyper-V) environments across data centres.
• Troubleshooting Microsoft Exchange, Application & Active Directory issues, which includes the Incidents generated by SCOM 2007/2012.
• Handling more than 150, 000 mailboxes hosted in more than 200 + exchange 2010 servers.
• Troubleshooting MS Exchange server issues related to DAG (Database Availability Group), Mail flow, OWA and Networking.
• Migration of exchange Mailboxes and Lync accounts across exchange/Lync 2010 infrastructure.
• Conducting DR /BCP test for exchange server.
• Configuring and managing Daily/Weekly backups using Backup Exec (2010/2012/2014 ) and Net backup across 37 Member firms.
• Administering active directory infrastructure and troubleshooting DNS replication issues on Domain controllers.
• Monitoring and Escalating the application/Web alerts triggered by Key Notes/Alert Site to respective application teams for timely resolution
• Monitoring and Troubleshooting the Core server issues like Server down/hung/not
• Responding, Disk Space, Processor utilization, services stopped or hung, App pool
• Issues, Missing heart beats using SCOM.
• Monitoring and managing GWAN firewalls and routers of Member Firms using Orion.
• Providing L3 exchange support to 37 Member firms across Deloitte.
• Configuring and troubleshooting Mail Flow, Message tracking and message size issues in exchange DAG 2010 environment.
• Management of mailboxes, recipients and Address lists.
• Monitoring the Exchange Server health, based on alerts generated from SCOM 2007/2012.
• Handling the Lync issue for all users in Deloitte, this includes the Managing and monitoring of the Lync servers.
• Handling disk space issues related to exchange server caused by increase in database size and log drive across DAG members.
• Hold the position of Shift lead and responsible for handling the floor during P1, P2 and P3 TACC calls for different issues reported and transitioned work to L2 team members for repetitive day to day issues.

Confidential

Systems Engineer

Responsibilities:

• Schema upgrade from Windows Server 2003 to Windows Server 2008 R2
• Active Directory migration/transition from by installing new windows server 2008 R2 Domain Controllers in the domain.
• Migrated all domain controllers from windows server 2003 to windows server 2008
• Installing DHCP role, Migrating DHCP scopes from windows 2003 to server 2008.
• Movement of FSMO roles to different servers as per the 2003 AD topology.
• Troubleshooting on Active Directory Replication problems.
• Decommission of all win 2k3 Domain Controllers in the domain.
• Worked as a Technical Consultant for the exchange2010 migration for the client in a team consisting of three members.
• Prepared all the installation and configuration documents during the transitioning of Exchange in the POC environment as per the proposed exchange 2010 architecture.
• Installation and Configuration of Exchange 2010 with all the roles (Client Access, Hub Transport, and Mailbox Roles) for 2 sites (11 servers) in co-existing exchange 2003 environment.
• Configuration of CAS and HUB server in exchange 2010 with HA Database design using DAG (2 node) cluster configuration in two different sites.
• Migrated 5500 user mailboxes from exchange2003 to exchange 2010.
• Given the support for resolving all issues after migration of mailboxes.
• Built and administered MS Exchange server 2003 Front-End and Back-End servers, has setup MS-Outlook 2003 & 2007 clients and provided technical support
• Supported and Administered 7 Microsoft Exchange 2003 standalone Servers in three sites & ‘Four Nodes’ Microsoft Exchange 2010 DAG environment with 2,500 mailboxes.
• Prepared Active Directory for Exchange 2010 SP1 installation.
• Configuring custom Address list, Send connectors, Remote domains and Accepted domains.
• Creating and configuring Transport Rules based on Users, distribution list and message headers.
• Creating and configuring email address policies as per Organizational needs.
• Monitoring and troubleshooting message routing configurations and issues.
• Configuring Global setting like Connection Filtering, Sender Filtering, Recipient Filtering etc.
• Tracking User messages for complains issues and troubleshooting of mail delivery
• Creating the system policies like Mailbox Store and Server Policy, and activating them to specific Servers and Mailbox Stores.
• Installing and Configuring RPC over HTTP server in exchange 2003 and adding secondary email address by using Recipient policies.
• Planning and configuring Smart Hosts, SMTP gateways, routing groups and various connectors as per organization structure.
• Planning and creating Administrative Groups, Mailbox stores and applying Mailbox limits.
• Installing and Configuring Trend Micro Scan Mail for Exchange in Exchange Server 2003.
• Managing Exchange Server 2003 Database and Recovering deleted Mailboxes
• Public folder management and migration using PFDEV Admin/ExFolders.
• Using Exmerge Tool for Export and Import mailboxes to PST file.
• Using ESEUtil for troubleshooting the exchange database
• Managing 28 exchange 2003 servers across 4 regions.
• Day to day Exchange incident resolutions and working on Service requests
• Monitoring Exchange server’s health status using OP Manager, Performing scheduled Offline defragmentation and Troubleshooting Mail flow & Mail Queue issues.
• Exchange
• Creating user accounts, distribution lists, mailbox management and public folder administration (PF migration& replication issues)
• Managing exchange brick level backups and restoration of mailbox data as and when necessary.
• Enabling accounts in office communication server2007.
• Generating mailbox size status reporting for all users on a monthly basis and performing disk clean up all exchange 2003 servers.Maintaining 32 Domain Controllers and their health check across East Asia, Latin America, Africa & Middle East and South of Asia. promoting new additional Domain Controller for new branches and migration of old server hardware to new DELL PE servers
• Implementing GPO’s and troubleshooting DNS, DHCP & Active Directory Replication related issues.
• Security group management after proper approvals from the concerned departments.
• Responsible for preparation of standard operating procedures (SOP’s).
• Daily and weekly reporting of Symantec update status across different regions and suggesting ways to ensure the smooth running of the Infrastructure.
• Performed schedule weekly and monthly maintenance tasks as part of the process.