Highly experienced Windows Admin with over 17 years of expertise in designing, implementing, and maintaining large-scale Windows-based systems and infrastructure. Proven track record of delivering complex projects on time while ensuring high availability and security of systems. Proficient in Microsoft 365, Azure AD, Windows Server, Active Directory, DNS, DHCP, virtualization, cloud computing, and scripting. Resourceful System Administrator consistently responds to wide range of technical challenges with focused and creative approach. Highly effective at problem solving and decision making. [Number] years of progressive IT experience. Dynamic individual with hands-on experience in [Area of expertise] and talent for navigating challenges. Brings strong problem-solving skills and proactive approach to new tasks. Known for adaptability, creativity, and results-oriented mindset. Committed to making meaningful contributions and advancing organizational goals.
Hi, I’m
Mohammad Quisar Ahmad
IT Consultant
Pune,MH
Summary
Overview
20
years of professional experience
8
Certifications
Work History
Vodafone India Service Pvt Ltd
Senior Wintel Engineer
12.2019 - Current
Job overview
- Designed, implemented, and managed Windows servers and related technologies.
- Manages identity and access in Azure Active Directory.
- Troubleshooter complex technical issues related to Windows and vmware systems.
- Collaborated with junior engineers to develop their skills and knowledge.
- Participated in the development of technical documentation and standards.
- Implemented security best practices and ensured compliance with regulatory requirements.
- Install, configure, and manage Windows Server operating systems, including Active Directory, DNS, and DHCP.
- Perform system administration tasks, such as user account management, group policy management, and security updates.
- Troubleshoot and resolve technical issues related to Windows Server, including system crashes, performance issues, and security breaches.
- Ensure security and compliance of Windows Server environments, including configuring firewalls, access controls, and auditing.
- Managed VMware infrastructure with ESXi 7.0 hosts and vCenter, including VM deployment, snapshots, cloning, and resource planning.
- Performed ESX patching through update manager and extended datastore sizes in vCenter.
- Managing hardware installation and upgrade cases.
- Closely work with vendors to implement, issue and fixes.
- Microsoft
- VMware
- Dell
- HP
Vodafone India Service Pvt Ltd
Windows Engineer
12.2015 - 11.2019
Job overview
- Implemented and managed Windows servers and related technologies.
- Troubleshot technical issues related to Windows systems.
- Collaborated with senior engineers to develop skills and knowledge.
- Participated in the development of technical documentation and standards.
- Vulnerability fix.
- Managed VMware infrastructure with ESXi 7.0 hosts and vCenter, including VM deployment, snapshots, cloning, and resource planning.
- Performed ESX patching through update manager and extended datastore sizes in vCenter.
- Managing hardware installation and upgrade cases.
- Closely work with vendors to implement, issue and fixes.
- Microsoft
- VMware
- Dell
- HP
Cognizant Technology Solution
Associate Operation Manager
01.2015 - 07.2015
Job overview
- Provided technical leadership and managed incident and problem resolution for various ITIL processes.
- Managed installation, maintenance, and troubleshooting for Microsoft Windows 2008/12 servers, including Domain Controllers, Application Servers, DHCP, WSUS, and VMware environments.
- Oversaw 650 servers (physical, virtual, and ESX) and planned patch management through WSUS/SCCM.
- Conducted memory mini/full dump analysis and fine-tuned memory/page files using procmon/sysinternal or process explorer.
- Coordinated with vendors on hardware failures and managed hardware upgrades.
- Administered Exchange 2007 Clusters, including database management, security, and user/group creation.
- Managed VMware infrastructure with ESXi 5.5 hosts and vCenter, including VM deployment, snapshots, cloning, and resource planning.
- Performed ESX patching through update manager and extended datastore sizes in vCenter.
- Knowledgeable in VMware cluster technologies: HA, DRS, and Fault Tolerance.
Wipro Technologies
Technical Specialist
01.2014 - 12.2014
Job overview
- Provided technical leadership and managed incident and problem resolution for various ITIL processes.
- Managed installation, maintenance, and troubleshooting for Microsoft Windows 2003/8/12 servers, including Domain Controllers, Application Servers, DHCP, WSUS, and VMware environments.
- Oversaw 1300 servers (physical, virtual, and ESX) and planned patch management through WSUS/SCCM.
- Conducted memory mini/full dump analysis and fine-tuned memory/page files using procmon/sysinternal or process explorer.
- Coordinated with vendors on hardware failures and managed hardware upgrades.
- Administered Exchange 2007 Clusters, including database management, security, and user/group creation.
- Managed VMware infrastructure with ESXi 5.1 hosts and vCenter, including VM deployment, snapshots, cloning, and resource planning.
- Performed ESX patching through update manager and extended datastore sizes in vCenter.
- Knowledgeable in VMware cluster technologies: HA, DRS, and Fault Tolerance.
- Conducted daily client meetings, planned resource shifts, managed escalations, aged tickets, and SLAs.
- Led team meetings and prepared minutes of meetings (MOM).
- Managed IBM series blade servers through RDP and DSView/IMM.
- Handled hardware troubleshooting and vendor coordination for IBM xSeries, Cisco, Dell, HP Proliant servers.
- Performed RAID installation/configuration, disk/memory leak troubleshooting, and server performance report generation.
- Managed AD replication, GPO issues, user management, and Active Directory migrations (Windows 2003 to 2008 and 2012).
- Installed and configured DNS, File & Print Servers, and troubleshooted DFSR issues.
- Managed SCOM servers, including report generation, client server additions, and threshold parameter modifications.
- Performed DB migrations, Exchange troubleshooting, and storage migrations.
- Created technical documentation and provided knowledge transfer to new joiners.
- Managed Symantec Exec backup 12/12.5.
Atos India
Associate Consultant
04.2011 - 01.2014
Job overview
- Provided infrastructure services on Microsoft Windows technology for offshore projects, including remote system administration for Windows 2000/2003/2008 servers.
- Administered Active Directory 2003/2008 and created standard processes for group policy deployment.
- Implemented and administered DNS, DHCP, and WINS.
- Managed Exchange 2003 Clusters, including database management, security, and user/group creation.
- Configured and managed RAID 0/1/5 and 1+0.
- Planned and executed monthly and weekly patches on Windows 2003/2008 servers using HPSA and WSUS.
- Managed SCOM servers, including report generation, client server additions, and threshold parameter modifications.
- Managed VMware ESX 4.0 servers through vSphere Client & Server, including P2V, V2V, templates, snapshots, cloning, DRS, HA, and VMotion.
- Provisioned virtual machines, additional memory, and disk space on ESX hosts.
- Generated server performance reports, created technical documentation, and provided knowledge transfer to new joiners.
- Handled IBM xSeries, Dell, HP Proliant servers, and managed over 3000 servers (virtual and physical).
- Created standard backup policies, performed backups, and restored data using Symantec Exec 12.0, Veritas, Arc Serve BrightStor, and NT Backup.
- Configured and monitored cluster services for failover issues.
- Managed server hardware using Dell Open Manage and HP System Management utilities.
- Maintained service delivery standards by following ITIL processes and resolving issues within SLA.
- Coordinated with clients and vendors for hardware and software issues.
- Attended Change Advisory Board (CAB) meetings and Daily DSR meetings for high-priority ticket issues.
- Prepared monthly work status reports, daily backup reports, and updated technology-specific documents.
- Prepared work instruction documents for major activities and issues.
Atos India
System Administrator
05.2008 - 03.2011
Job overview
- Managed and maintained Microsoft Windows 2000/2003/2008 servers.
- Administered Active Directory, DNS, DHCP, and WINS.
- Managed Exchange 2003/2007 Clusters and user/group creation.
- Configured and managed RAID 0/1/5 and 1+0.
- Planned and executed patches using WSUS and HPSA.
- Managed VMware ESX servers, including P2V, V2V, templates, snapshots, cloning, DRS, HA, and VMotion.
- Provisioned virtual machines and managed server hardware.
- Created backup policies and performed backups/restores.
- Monitored cluster services and maintained service delivery standards.
- Coordinated with clients and vendors for hardware/software issues.
- Prepared reports and technical documentation.
IT Source
System Administrator
08.2006 - 12.2007
Job overview
- Installed and managed Windows 2000/2003 servers, network printers, and LAN.
- Maintained Active Directory Services (ADS), including user creation, profile management, login scripts, and group policy administration.
- Handled IBM xSeries and HP Proliant DL320 & DL380 servers.
- Configured RAID (0, 1, and 5).
- Monitored servers daily for disk space and CPU utilization.
- Conducted weekly antivirus updates for all servers, desktops, and laptops.
- Attended and resolved calls within SLA timelines.
- Performed daily backups of file servers and Lotus Notes servers using NT Backup and ARCserve BrightStor.
- Configured and managed Lotus Notes Client R5/R6.
- Supported over 800 desktops and 250 laptops.
- Coordinated with vendors for hardware and software issues.
- Configured Blackberry handhelds (Pearl 8100, 7730).
Sitecos Solution
Facility Management Engineer
12.2005 - 07.2006
Job overview
- Installed Windows 2000 servers, network printers, and LAN.
- Performed daily backups of file servers and database servers using NT Backup.
- Attended daily desktop calls, including installation and configuration of client software like Finnacle, FinnOne, Talisma, Eware, Avaya, Unify Desktop, Quality Call, and MS-Office.
- Installed and maintained Windows client operating systems like Windows XP and 2000 Professional.
- Configured and maintained Microsoft Outlook.
- Hardened desktops and supported over 900 desktops.
- Installed Oracle 8i and SQL Server.
- Provided helpdesk support.
Education
Magadh University
Bachelor's Degree from Physics
University Overview
Manipal University
Master Degree from Information Technology
University Overview
Skills
Windows Server 2016 / 2019 / 2022
undefinedCertification
Microsoft Certified Solutions Expert (MCSE): Windows Server
Accomplishments
Accomplishments
- Successfully implemented and upgraded large-scale Windows-based systems for a Fortune 500 company.
- Designed and implemented a secure and compliant Windows-based infrastructure for a healthcare organization.
- Awarded as Star Performer in 2022 for infrastructure upgradation, security, vulnerability fix, and monitoring parameters preparation for the Qatar FIFA World Cup.
- Recognized as Star Performer in 2018 by the client and Vodafone Leadership Team.
- Received appreciation from the client for successfully resolving a major application failure that had been an ongoing issue. Planned, documented process steps, executed, and took ownership of the resolution. Awarded for this outstanding work by Atos India.
Timeline
Senior Wintel Engineer
Vodafone India Service Pvt Ltd
12.2019 - Current
Windows Engineer
Vodafone India Service Pvt Ltd
12.2015 - 11.2019
Associate Operation Manager
Cognizant Technology Solution
01.2015 - 07.2015
Technical Specialist
Wipro Technologies
01.2014 - 12.2014
Associate Consultant
Atos India
04.2011 - 01.2014
System Administrator
Atos India
05.2008 - 03.2011
System Administrator
IT Source
08.2006 - 12.2007
Facility Management Engineer
Sitecos Solution
12.2005 - 07.2006
Magadh University
Bachelor's Degree from Physics
Manipal University
Master Degree from Information Technology
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