SREESANKAR R
Bangalore
Summary
A results-driven IT professional with over 15 years of experience in the industry, specializing as a Lead Engineer in System Administration. Demonstrates expertise across the full spectrum of ITES, combining strong technical acumen with sharp analytical skills. Adept at engaging with stakeholders across all levels of business and management, and known for providing valuable insights and a collaborative, team-oriented approach to implementing best practices and driving business excellence.
Overview
16
16
years of professional experience
1
1
Certification
Work History
Lead Engineer - System Administration
FIS GLOBAL
04.2021 - Current
- Managed remote infrastructure operations for client environments across diverse platforms.
- Led Change Management, Problem Management, and Incident Management processes to ensure service continuity and efficiency.
- Ensured server security compliance and executed risk management protocols for both cloud-based and on-premises servers.
- Diagnosed and resolved customer issues related to Windows-based applications, hosted in cloud and on-prem environments.
- Coordinated infrastructure migrations, system upgrades, and the deployment of server monitoring tools.
- Oversaw operations across service lines including Wintel (Windows, VMware ESXi, Hyper-V, Azure, O365, AWS), Backup (Commvault Simpana), Storage (HP), and Databases (SQL).
- Collaborated with cross-functional teams and business stakeholders to ensure alignment with current security standards.
- Responsibilities in a Multi-Cloud Environment:
- Managing Entra ID (formerly Azure Active Directory) for identity and access control.
- Maintaining applications hosted in Azure, ensuring availability, configuration, and performance.
- Registering and deregistering applications in Azure, including configuring Single Sign-On (SSO) for seamless authentication.
- Managing groups and permissions in Azure used as the authentication service for AWS infrastructure.
- Monitoring and maintaining privileged access for users of Azure Virtual Desktop environments.
- Administering Citrix Cloud services, including server-side operations and resource upkeep.
- Creating user groups, assigning roles and permissions, functioning as a Global Administrator.
- Deploying and maintaining virtual machines (VMs) across both Azure and AWS cloud platforms.
- Environment Overview:
- Technologies: Server Infrastructure, Storage Systems, VMware, Windows Server (2016/2019/2022), Cloud Platforms, Email Solutions, Backup Systems, and ITIL-aligned Change & Incident Management Frameworks.
- Platforms & Tools Used:
- Cisco UCE Servers, Dell Servers, HP Storage Solutions, Citrix Application Virtualization, Microsoft Exchange Server 2019 (Hybrid with Exchange Online), Microsoft 365, Azure Active Directory, Commvault Simpana v11.32.47, ServiceNow, Track-It, ManageEngine AD Manager Plus, ManageEngine AD Audit, Password Manager Pro.
Senior System Administrator
OCS INFOTECH
06.2014 - 04.2021
- Oversaw daily Data Center operations
- Managed accounts, backups, performance tuning
- Handled AD services, ACLs, security policies
- Administered VMware DC-DR infra (VMs, clones, templates)
- Coordinated tape tracking and backup logistics
- Led ITIL-based change, incident, and project management
- Executed ITSM processes and service continuity plans
- Ensured server compliance and risk assessments
- Liaised with stakeholders during system outages
- Conducted trend analysis and alert monitoring
- Aligned ops goals with leadership and tech teams
- Deployed ManageEngine Desktop Central
- Led infra upgrades and tool rollouts (ServiceDesk)
- Resolved Windows app issues and user queries
- Managed email routing, logs, calendar configs
- Reviewed system performance and applied fixes
- Ensured compliance through security setting alignment
- Supported antivirus/DLP: Symantec, McAfee, Trend Micro
- Maintained hosted mail security platforms
- Provided hardware support: Dell servers, storage, tapes
- Created reports and tracked change requests
- Operated across multiple service lines:
- Wintel: Windows, VMware ESXi, RHEL
- Backup: Symantec, Commvault, Veeam
- Storage: Dell, NetApp
- DB: SQL Server
- Solved issues in connectivity, security, access flow
- Enforced group policies in AD for network security
Senior Network Engineer
Soffit Infrastructure Services Pvt Ltd
09.2012 - 02.2014
- Managed remote infra operations for clients
- Mentored new members in support team
- Led onsite/offsite support team (3 engineers)
- Administered Windows Server & CentOS systems
- Managed AD services, site replication, GPOs
- Supported core services: DNS, DHCP, IIS, FTP, VPN, SQL
- Designed & migrated virtual servers (VMware stack)
- Managed Dell & software storage systems
- Planned/documented infra hardware & architecture
- Deployed antivirus (McAfee, Kaspersky)
- Managed PineApp Mail Server security
- Installed & supported WatchGuard firewalls
Infrastructure Engineer
Assyst (Pan Apps)
07.2009 - 01.2012
- Oversaw full infra: servers, switches, storage, tape
- Led projects: server deployment, P2V, mail/storage migration
- Installed & maintained VMware Zimbra Mail System
- Resolved tickets & incident alerts (India-based resources)
- Managed change/incident tickets via ServiceDesk Plus & OTRS
- Troubleshoot OS, network, and software issues
- Installed drivers, upgraded systems, provided desktop support
- Managed Exchange, AD, File/Print servers, intranet
- Deployed updates and patches via Group Policy & Windows tools
- Handled user accounts, permissions, and security templates
- Diagnosed hardware and peripheral issues
- Procured and installed hardware and OS upgrades
- Deployed antivirus (Trend Micro & Kaspersky)
- Patched Windows Servers monthly using WSUS
- Administered VMware via vSphere (VM creation/upgrades)
- Resolved alerts/tickets for India & US client systems
- Managed Change/Incident tickets via Redmine & Bugzilla
Education
Bachelor of Commerce - Computer Application
06.2007
Skills
- Active Directory management
- Windows administration
- System upgrades
- Program installations
- Project management
- Troubleshooting
- Server hardware maintenance
- Incident management
- System updates
- Backup and recovery
- Virtualization technologies
- Configuration management
- Server maintenance
- Server management
- Disaster recovery
Certification
- CCNA (CISCO Certified Network Associate) Routing & Switching
- MCSA (Microsoft Certified Solution Associate) MCP ID: 6215826
- ITIL V3 Foundation Certification - 2018-06
- Microsoft Certified Azure Fundamentals - 2020-10
- Microsoft Certified Azure Administrator - 2026-02
- Microsoft Certified Azure Solutions Architect Expert - 2026-03
- Microsoft Certified Azure Security Engineer Associate - 2026-03
Disclaimer
I do hereby declare that all the statements made above are true and perfect to the best of my knowledge and belief. Sreesankar. R (SD)
Timeline
Lead Engineer - System Administration
FIS GLOBAL
04.2021 - Current
Senior System Administrator
OCS INFOTECH
06.2014 - 04.2021
Senior Network Engineer
Soffit Infrastructure Services Pvt Ltd
09.2012 - 02.2014
Infrastructure Engineer
Assyst (Pan Apps)
07.2009 - 01.2012
Bachelor of Commerce - Computer Application
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