Divjot Kaur
Noida
Summary
Experienced System Administrator with 9 years in enterprise IT operations, specializing in Microsoft 365 Exchange Online and hybrid identity environments. Expertise in managing high-impact incidents and leading teams within ITIL and Agile frameworks. Seeks to apply technical leadership and process optimization skills in a team lead role to enhance secure, scalable IT services.
Overview
12
12
years of professional experience
1
1
Certification
Work History
Senior System Administrator
Innovation Technology By Design
11.2022 - Current
- Administered VMware environments, including ESXi hosts and vCenter, ensuring availability for enterprise business-critical workloads.
- Performed complete virtual machine lifecycle management, including VM provisioning, power operations, snapshot management, and secure decommissioning.
- Monitored VM and host performance metrics, proactively identifying and escalating capacity or performance risks to maintain system reliability.
- Coordinated server maintenance activities, including host patch management, VM health checks, and execution of planned maintenance windows.
- Supported troubleshooting of VM connectivity issues, datastore alerts, and host availability incidents to ensure service continuity.
- Coordinated with backup, security, and platform teams during infrastructure changes, incident resolution, and remediation activities.
- Ensured strict adherence to change management processes, SOPs, and audit requirements for all VMware infrastructure operations.
- Supported vulnerability remediation efforts across VMware-hosted Windows servers in close collaboration with SOC and security teams.
- Assisted in validating infrastructure-related vulnerabilities, including insecure configurations, outdated OS components, and SSL/TLS issues.
- Executed approved remediation activities such as OS patching, configuration hardening, and controlled service restarts through formal change requests.
- Verified remediation effectiveness through post-fix validation and supported vulnerability re-scans to ensure closure.
- Maintained detailed documentation, change records, and audit evidence to support compliance, governance, and regulatory requirements.
Senior Escalation Officer (SWAT Team)
Slice
06.2022 - 10.2022
- Managed critical technical escalations involving infrastructure and application availability.
- Administered Microsoft Defender for Endpoint and Exchange, responding to security alerts and incidents.
- Analyzed audit logs and sign-in logs to identify and address potential security risks.
- Streamlined escalation resolution time by enhancing RCA processes and optimizing communication workflows.
- Provided support for SharePoint, OneDrive, and Microsoft Teams, ensuring business continuity.
- Facilitated collaboration between engineering, operations, and business stakeholders to ensure alignment on critical issues.
- Assisted in configuring Security and Compliance settings for user accounts.
- Assisted with Exchange migrations from on-premises servers to Microsoft 365.
- Trained junior team members on escalation handling and incident ownership.
Process Associate – IT Infrastructure Support
Tata Consultancy Services
02.2017 - 05.2022
- Provided enterprise IT support for Microsoft 365, Exchange Online, and Active Directory environments.
- Managed user access, resolved mailbox issues, and processed service requests via ServiceNow to enhance user experience.
- Supported server monitoring and conducted availability checks, escalating security events to maintain system integrity.
- Collaborated with cybersecurity teams on threat identification and remediation.
- Collaborated within Agile delivery models to ensure SLA compliance and enhance system stability.
Move Coordinator
P M Packers Movers
08.2016 - 12.2016
CRM Executive
Grofers
07.2015 - 06.2016
Officer
VFS Global Services Pvt. Ltd.
06.2014 - 03.2015
Education
B.B.A / B.M.S -
Banarasi Dass Arya Girls College
Skills
- Microsoft 365 administration
- Azure Active Directory and Entra ID
- Exchange Online and SharePoint Online
- Azure portal administration
- Cloud infrastructure management
- VMware vSphere and vCenter administration
- Email security integration
- Exchange backup solutions
- Performance monitoring and troubleshooting
- System performance optimization
- Network architecture design
- Incident and problem management
- Change management
- ITIL framework
- Documentation and knowledge management
- ServiceNow documentation
Certification
- ITIL Certified
- Agile E2 Certified
- Certified Agile Scrum Master (CSM)
- Project Management Assessment
- Microsoft 365 Administration Certification – IT By Design
- Exchange Online Administration Certification – IT By Design
Languages
- Hindi
- Punjabi
- English
- Hindi
- Punjabi
Core Technical Skills
- Microsoft 365 Collaboration
- Microsoft 365 Tenant Administration
- Exchange Online (Mail Flow, Security, Mailbox Management)
- SharePoint Online (User Access Management)
- Azure AD / Entra ID (Hybrid Identity, Sync, Access Control)
- Virtualization / VMware
- VMware vSphere (ESXi, vCenter Server)
- Virtual Machine Lifecycle Management (Provisioning, Snapshot, Decommissioning)
- VCenter Administration & Host Management
- VM Performance Monitoring (CPU, Memory, Disk, Datastore)
- VMware Host Patching & Maintenance Coordination
- Datastore & Capacity Monitoring
- VMware Troubleshooting (Connectivity, Storage, Host Availability)
- Change Management & Audit Support for VMware Infrastructure
- Active Directory (On-Prem C Hybrid)
- Wintel Server Administration
- Backup & Recovery (Datto, Barracuda)
- Server Performance Monitoring
- Incident, Problem & Escalation Management
- Team Leadership & Mentoring
- ITIL & Agile-Based Service Delivery
- Documentation & Knowledge Management
Timeline
Senior System Administrator
Innovation Technology By Design
11.2022 - Current
Senior Escalation Officer (SWAT Team)
Slice
06.2022 - 10.2022
Process Associate – IT Infrastructure Support
Tata Consultancy Services
02.2017 - 05.2022
Move Coordinator
P M Packers Movers
08.2016 - 12.2016
CRM Executive
Grofers
07.2015 - 06.2016
Officer
VFS Global Services Pvt. Ltd.
06.2014 - 03.2015
B.B.A / B.M.S -
Banarasi Dass Arya Girls College