Active Directory Manager

PERI AMMASAI

Email: ********@*****.*** Phone: 612-***-****

EXPERIENCE SUMMARY

Over 15 years of IT experience in varied capacities and mixed environments consisting of Windows, Virtualization, Storage and Networking technologies.

Provide technical expertise and leadership to different aspects of System Administration, Security, Patch & Vulnerability management and Data Center migration.

Support, monitor and maintain infrastructure and applications for different business clients

Experience in Infrastructure Project Management.

Experience in on-premises and AWS Cloud Server operations and Data Center operations.

Strong experience in Windows and VMware Administration and troubleshooting.

Experience in designing, implementing and supporting Windows 2003/2008/2012 in a medium-to-large scale production environment.

Strong experience in WSUS and SCCM for patching and package deployments.

Installing and managing Active Directory, Group Policy, DNS and DHCP Servers.

Configuring and maintaining Windows Clustering for Database and applications.

Provides support services to monitor, backup and diagnose servers and storage equipment and recommend corrective actions.

Experience in monitoring using SCOM, SIEM, SolarWinds, HPSIM, IBM Director and Nagios

Experience in Storage technologies and enterprise Backup and Restore.

Experience in Installing and configuring SQL and Oracle database and applications.

Experience in installing and administering VMWare ESX/ESXi servers, storage and networks.

Experience in vSphere, VCenter, VM migrations, converter, update manager and data center consolidation.

Experience using Veeam products for VM Backup, Restore and Replications.

Experience in installing and configuring IIS 6/7/8 and Load Balancing techniques.

Coordinate on-site and off-site business continuity activities, develop an optimal recovery plan and working with IT operations and customers to implement the plan.

Lead and manage technical projects and delegate tasks throughout the team.

Experience in ITIL processes including Change, Configuration, Problem and Incident management.

Documentation and diagram updates on System and Network architecture.

Managing a team of Engineers and providing training to end users.

CERTIFICATIONS

One week workshop on Implementing AWS at UT Dallas.

Certification of Completion of VMware vSphere 4.0

Microsoft Certified System Engineer (MCSE)

Cisco Certified Network administrator (CCNA)

SUN certified System Administrator (SCSA)

Diploma in LAN / WAN technologies

TECHNICAL SKILLS

Operating Environment: Windows 2000/2003/2008 and 2012 Servers, Windows XP, Windows 7, Linux and Novell Netware

Database: Oracle and SQL Server

Applications: Active Directory, TCP/IP, Group policy, DNS, WINS, DHCP, MS-Exchange, Windows Clustering, SMS/SCCM, Citrix XenApp, Veeam, IIS, vOPS, Commvault, Load Balancing, SharePoint, SQL Reporting, PowerShell, Symantec, Altiris, MS-Visio, MS-Project and MS-Office & Office 365

System Monitoring: IBM Director, HPSIM, Nagios, SCOM, SIEM and SolarWinds

Virtual Servers: VMware ESX/ESXi 4.1/ 5.0/5.5/6.0, vSphere, Microsoft Hyper-V and AWS

Hardware: HP, Dell and IBM Servers, HP/IBM Blade System, Cisco UCS, SAN, NAS, RAID Arrays, EMC, NetApp, Desktops, Printers, Routers and Switches

Other Qualifications:

Excellent communication skills and the ability to interface with all kind of customers.

Self-motivated and Team oriented.

Strong ability to translate complex technical information to end-users at all levels.

Willing to be hands-on technically in addition to performing managerial duties.

Willing to accept responsibilities and initiative.

PROFESSIONAL EXPERIENCE

Omnitracs, Dallas, TX April 2017 – Present

Sr. System Administrator

System administration and support of client’s enterprise Windows and VMWare servers with on-premises and AWS cloud environment

Systems support of mission critical SaaS products developed on .Net and J2EE environments to meet and exceed current SLAs

Develop, implement and enforce operating system configuration standards and uphold all business continuity requirements

Ensure all systems deployed are secure and hardened from any known vulnerabilities

Support any network server, storage and database migration activities and react to systems and application outages

Continuously improve systems monitoring leveraging COTS or by custom tools

Root cause analysis for any major incidents resulting in problem management responsibilities

Support any engineering or operational initiatives related to new product offering or sustaining activities

Review/update existing systems architecture and designs for feasibility of any new solution

Mentoring junior level and peers for any new initiatives

Participation in training and development of the team

Environment: Windows 2008/2012, VMware ESXi, vSphere, AWS, SCCM and EMC SAN

Texas Capital Bank, Dallas, TX July 2016 – March 2017

Lead System Administrator

Collaborate and communicate with peers and leaders of the health, capacity, patch level and overall status of the infrastructure and systems

Provide support and escalation point for all Windows 2003/2008 and 2012 server systems

Managing AD domains, Groups, Computers and other objects in the domain

Administering and implementing security processes and procedures.

Directing and leading the team for patch and vulnerability issues and remediation.

Identify vulnerabilities using McAfee Vulnerability Manager and provide report to auditing team and upper management.

Develop technology standards and automated system processes for patch management

Leading outages and incidents with multiple technology partners and participants

Identify and retire older equipment and implement new systems as per company standard

Develop and follow the change management document including back out plans

Collaborates and communicates with other IT groups to stay informed of changes and deployments that may impact the production, QA and development systems

Monitoring performance and availability of systems using SCOM and SolarWinds

Documents and recommends policies, procedures and systems architecture.

Environment: Windows 2003/2008/2012, McAfee MVM, VMware ESXi, vSphere, SCCM and SolarWinds

Fujitsu, Dallas, TX Oct 2015 – June 2016

Sr. System Administrator

Provide support to Fujitsu’s client in US and Canada with multiple data centers

Administering Active Directory, Group Policy, User accounts, Groups and Computers

Supporting Windows and VMware systems that support the existing infrastructure and operations

Documenting system changes through change management, configuration management databases and system diagrams

Coordinate server patching and address security vulnerabilities

Leads technical projects and delegates technical tasks throughout a team.

Work with project teams for any technical issues in the Initiation and Planning phases of the standards and best practices

Makes recommendations for software/hardware based on research in support of procurement efforts, when appropriate.

Installation and configuration of server components, storage and completing any other project related requirements

Managing Internet Explorer 11 upgrade project with standard and custom set of group policies

Implementing small to medium size projects for software and hardware infrastructure

Work within specified client change management processes to implement changes

Environment: Windows 2008/2012, Active directory & Group Policy, DNS, DHCP, PowerShell, VMware ESXi & vSphere

Healthland, Minneapolis, MN March 2014 – Sep 2015

Sr. Systems & Network Administrator

Architect and design Physical and Virtual server environment

Responsible for day-to-day support and assist in troubleshooting issues as needed on both windows and VMWare environments

Familiar with utilizing SAN storage for VMware ESXi servers

Management of Active Directory and Group Policy, Users, Groups, Computers and Security

Identifying and deploying Microsoft security patches and applications using SCCM 2012

Provides support services to monitor, backup, and diagnose servers and applications and recommend corrective actions

Supports and coordinates installation of servers and applications for new projects

Server upgrades and application migration for EMR applications.

Collect, prioritize, build, test and deploy needed configurations and changes

Designing best practices including configuration, system upgrades, user migrations and system testing and availability

Leads problem-solving efforts often involving outside vendors and other support personnel and/or organizations

Work with application developers to resolve server and application issues

Work with end users to resolve issues when required

Ensures high availability and acceptable levels of performance of mission critical systems

Knowledge of standards in IT architecture and infrastructure

Experience in enterprise-wide standards for new application development

Assist and collaborate with other teams as a subject matter expert in the development and evaluation of new technical solutions and implementations

Work closely with IT operations and change management function to coordinate hardware and software changes

Develops and maintains procedures for Server installation and configuration support

Maintains and protects confidentiality with regard to all aspects of patient care

Self-driven and resourceful to achieve goals independently as well as work well in groups

Environment: Windows 2003/2008/2012, DNS/DHCP, Active Directory, SCCM 2012, VMware & Hyper-V, NetApp and Unitrends.

Ramsey County, St Paul, MN April 2013 – Feb 2014

Sr. VMware Administrator

Manage overall design and support of Windows and VMware infrastructure environment.

Installing physical and virtual servers and configure them as per company standard.

Identifying and updating servers with monthly security patches and updates.

Managing Active Directory, DNS, DHCP, Exchange and Print Servers and other applications.

Involved in server and data center consolidation, vSphere and vCenter server migration and upgrade.

Installed vSphere and vCenter 5.0 and migrated ESXi 4.1 hosts from VC4 to VC5.

Created patch and upgrade baselines using Update Manager and upgraded ESXi 4.1 to 5.0.

Planning and implementation of in-state upgrade from 5.0 to 5.1 with Single Sign-On feature.

Purchased new IBM hardware with MAX5 extended memory module and installed ESXi 5.0.

Creating ESXi cluster in vSphere and performing VM migrations and storage vMotion.

Creating storage volumes in NetApp and adding new VMFS Datastore in vSphere.

Managing VMware Horizon View for virtual desktops

Managing NetApp storage, Veeam and Commvault backup and restores.

Enabled utilization of VMware resources by consolidating them into Virtual Center.

Performing incident and problem analysis and resolve escalated technical problems.

Consulted by other agencies and departments on a regular basis regarding virtualization (servers and storage), systems management, performance and design issues.

Consulted or engaged in customer issues on an as-needed basis.

Installing and managing IIS Web Servers for internal and external websites.

Establish standards, policies and procedures to leverage best practices in the operation of the system administration teams.

Draft and maintain design documentation for all equipment, processes, and procedures for the virtualized environments.

Responsible for other duties/projects as assigned by the management as needed.

Environment: Windows 2003/2008, Active directory, Exchange 2010, DNS, DHCP, IIS, VMware ESXi 4.1/5.0/5.1, vSphere, Update Manager, Load Balancing, vOPS, VDI, Veeam, NetApp and Visio

UnitedHealth Group, Minneapolis, MN March 2012 – March 2013

Windows, VMWare & Data Center Migrations Consultant

Administering and managing Windows and VMWare environments in an enterprise.

Installing and troubleshooting Windows 2003/2008 servers, Active Directory, DNS, DHCP, Exchange and Storage servers.

Windows/VMWare Server upgrades, VM host and guest migration and setting up new datacenter.

Physical-to-Virtual (P2V) server migrations, V2V migrations using VMWare converter and plate spin.

Creating standard VM templates, update servers/templates with monthly patches and deploying new virtual machines.

Managing IIS web servers for different internal and external sites.

Acting as a technical project manager for the data center migration.

Managing datacenter migration process and act as a bridge between project team and technical team.

Review data center server migration plans and revise roles and responsibilities.

Researching server information to complete server profiles in preparation for migration.

Organizing work efforts to remediate server software in preparation for migration including OS patches, driver updates, and 3rd party system software packages.

Organizing work efforts between platform teams and storage teams to remediate server storage in preparation for migration including migration to new SAN arrays, removal of unneeded SAN devices and migration to new NAS devices.

Follow up on any open application validation issues from move.

Serve as an escalation point for technical issues on the migration project.

Maintaining datacenter inventory and asset management in remedy.

Coordinate with other platform teams for general day to day work.

Participate and interact with project meetings and provide inputs to adjust processes as needed for improved workflow.

Environment: Windows 2003/2008, VMware and VSphere, IIS, HP/Dell servers and Blades, Cisco UCS, EMC, SharePoint and MS-Project.

Target, Minneapolis, MN Oct. 2010 – Feb. 2012

Sr. Infrastructure Engineer / Architect

Interact with IS project teams, Database Administrators and Application teams to define system requirements and resolve issues.

Consult within team members and performs needs analysis, evaluates requirements and recommends designs.

Plans and executes project tasks as assigned, working with various application, systems, network and helpdesk groups.

Partner with project team members to identify firewall requirements for communication between SAP and core infrastructure components.

Conduct reviews of policy with Security team and communicate, coordinate and execute rules implementation.

Partner with SharePoint team on testing and implementation of SharePoint server 2010.

Assist in the creation of license management strategy for WinShuttle and other applications.

Work independently or in a team to implement complex hardware, software, and database environments.

Design and deploy Windows 2003 and 2008 servers on physical and Virtual environments.

Create new OUs and implement restricted Group Policy for different application servers.

Evaluate, plan, design and deploy all 3rd party software related to SAP

Managing Physical and Virtual infrastructure for SAP environment.

Co-ordinate with Quality Assurance team for effective testing of new applications and packages.

Evaluate, test and certify new applications, packages and tools as per client’s requirement.

Maintain and implement technical documentation and operational procedures to support day-to-day operations.

Environment: Windows Server 2003/2008, Hyper-V, SCCM, Active Directory and Group Policy, Firewall, DNS, DHCP, SAP, SharePoint 2010, MS VISIO, MS Project, PowerShell, and DELL Servers.

Allianz Life (IBM), Minneapolis, MN April 2008 – Sep. 2010

Sr. Wintel / VMWare Administrator

Provide System support to all Wintel and VMWare servers (~ 1300) in the enterprise.

New server builds using ADS and Microsoft MDT tool.

Managing Windows 2000/2003/2008 in a production and pre-production environments.

Planning, installing and managing Active Directory, DNS, DHCP, WINS and Group Policy.

Administering user accounts (~7000) and permissions and troubleshooting user authentication issues.

Installing and managing Windows clustering and multiple SQL instances.

Managing daily data center operations in multiple locations.

Managing Disks and Volumes using VERITAS Enterprise Administrator.

Meeting with Microsoft, Security and Architect team to review the monthly release of Microsoft patches.

Leading the team for monthly and quarterly patching for all (~1300) servers

Package deployment and patch management using SMS/SCCM.

Extend AD Schema for SCCM 2007 and instrumental for SCCM upgrade.

Installing and configuring HP Blade chassis (C7000) and administering Blade servers.

Hardware management and monitoring using HPSIM and IBM Director.

Strong troubleshooting knowledge on Active Directory, DNS, DHCP, Event Logs, PerfMon, Backup Jobs, Load Balancing/Clustering issues.

Extensively used HPOV and Remedy for Incident, Problem and Change management.

Participating Change meetings for various changes and break fix.

Troubleshooting and Managing Backup using Tivoli Storage Manager.

Administering Citrix XenApp environment using Citrix Management Console.

Perform system administration tasks for project implementations, which may include multiple, simultaneous activities.

Meet with project managers and third party vendors to help determine whether new software and/or hardware solutions are feasible and conducive to the environment.

Prepare, update and maintain support documentations for different operations.

Performing off-hour maintenance and participating 24/7 on-call support.

Environment: Windows 2000/2003/2008, SMS & SCCM 2007, SCOM 2007, Active Directory and group Policy, DNS, DHCP, VMWare, Citrix XenApp, SQL 2005, VERITAS, IBM, HP and Blade System.

Tastefully Simple Inc., Alexandria, MN April 2006 – March 2008

Sr. System, Security & Network Administrator

Provide System, Network and Application support to Testing, Development, Stage and Production environments (~300).

Maintaining day to day Data Center operations.

Installing and maintaining new Servers, adding and replacing Memory, Mother Board and other components on HP Servers.

HP Firmware and driver update and installing HP Support Packs.

Tested different NFT options and configured Network Fault Tolerance on Production Network.

Configuring ILO for remote administration and integrating with Active Directory.

Configure, troubleshoot and monitor core services such as Active Directory, DNS, WINS, DHCP and group policy.

Managing User accounts (~1000) and Security on Windows 2003.

Installing and configuring MS Virtual Server 2005, creating, add/remove virtual machines and installing applications.

Configuring and managing Altiris Management Server and its components.

Installing patches and hot fix periodically.

Configuring ports and Zoning on Brocade SAN Switches and maintaining HP EVA SAN Storage.

Creating Disk Groups, Vdisks and adding Hosts on HP EVA. Create Snapclone, Move, present and unpresented to any servers.

Updating SAN Drivers and installing / updating MPIO DSM Manager for SAN.

Configuring, maintaining and monitoring Whats Up Gold, DNS Made Easy and MOM for effective monitoring.

Installing SQL 2005 on Windows clustering, install SQL instances, SQL Reporting Services, SQL Management Studio and client components.

Managing HP Data Protector and MSL 5052 Tape Library backup and recovery solution.

Installing IIS, creating application pools and maintaining different sites. Assisting for Code releases for the company internal and external websites.

Managing and Administering Exchange 2003 environment.

Manage, troubleshoot and support Citrix environment 3.0 and 4.5.

Providing support to call tickets escalated to Level1 admin team.

Updating and maintaining company Network diagrams and documents.

Environment: Windows 2003, Active Directory, IIS, Exchange 2003, SQL 2005, Citrix PS, DNS, DHCP, SQL Reporting, VBScript, MS Virtual Server 2005, HP, Altiris and Symantec Antivirus.

Dr. M.G.R. Group of Companies, Chennai, India Aug. 2002 – Jan. 2006

Principal System Engineer

Provide infrastructure support for an Engineering University and its affiliated colleges, Hotels, and other companies.

Handled LAN / WAN networking projects for various departments in different cities.

Planning, designing and implementing structured cabling for LAN Network.

Server support of Windows 2000, Windows 2003, Exchange 2003 and Linux.

Installing and configuring Active Directory, DNS and DHCP scopes.

Group policy and user account management for ~2000 users.

Administering user accounts, permissions, backup, troubleshoot network problems on Windows and Unix Servers.

Windows updates and fixes and security patch management and deployment.

Installing and configuring new computers and adding to domain.

Upgrading existing servers and desktops with additional hardware.

Providing support and managing ~1000 desktops with a team of engineers.

Design and integrate networks in NT and Linux environment.

Install and configure Exchange 2003 and configure mail boxes and public folders.

Perform disk/memory upgrades on Unix and Windows servers and install peripherals like tape drive and printers.

Configuring and maintaining Windows Clustering for SQL Database and applications.

Plan, Design and implement VMWare Servers for different applications in different environments.

Create/Modify/Monitor User Accounts and customize user environment on Windows and Linux.

Implement backup, restore and setup recovery procedures of production data.

Environment: Windows 2003/2000 Servers, MS Exchange 2003, SQL 2000, Veritas, Windows XP / 2000, Windows Clustering, VMWare Servers, IBM, HP, Linux.

EDUCATION

Bachelor of Engineering (Electronics & Communications)

University of Madras,

Chennai, India.

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