Microsoft
Windows Server, Microsoft 365, Active Directory and identity administration.
SENIOR SYSTEM ADMINISTRATOR
Windows infrastructure.
Practical, hands-on work.
13+ years of hands-on experience supporting Windows infrastructure, Microsoft 365, Active Directory, Hyper-V, networking, firewalls and PowerShell scripting.
Currently building toward Azure administration, cloud resource deployment and DevOps support.
Experience13+ years
Current focusAzure Administration
ApproachHands-on & practical
01 / ABOUT
I like solving infrastructure problems.
My career started in technical support and moved toward system administration and infrastructure management. I work with on-premises business environments covering Windows servers, Active Directory, Microsoft 365, Hyper-V, firewalls and basic networking.
I enjoy building high-end PCs, exploring different technologies and learning through hands-on work. When I face a problem I do not know, I research it, test possible solutions and work through the issue.
My next career focus is Azure administration, cloud resource deployment and resource management, while continuing to use my on-premises infrastructure experience.
02 / TECHNICAL SKILLS
Core technologies and infrastructure I have worked with.
Virtualization
Hyper-V VM deployment, clustering, replication and migration.
Networking & Security
DNS, DHCP, VLANs, NAT/VPN, firewall rules and network segmentation.
Automation
PowerShell and Task Scheduler for repeatable Windows administration and automation tasks.
Azure — Current Focus
Building practical skills in Azure administration, resource deployment, storage and networking.
03 / SELECTED PROJECTS
Selected hands-on infrastructure work and practical implementations.
01
Hyper-V & VM Deployment
Virtual machine setup & deployment
Deploy Hyper-V virtual machines based on infrastructure requirements. This includes creating a reusable master VM and deploying role-based VMs such as Domain Controller, File Server and Database Server.
02
Active Directory Deployment
Windows identity infrastructure
Built Active Directory from the ground up, including Domain Controller deployment and the supporting Windows identity environment. The work includes Active Directory, Group Policy and DNS.
03
Veeam Backup Implementation
Backup & disaster recovery
Implemented Veeam backup for virtual infrastructure and supported backup, recovery and disaster recovery requirements for the environment.
04
Sophos / SonicWall Firewall Migration
Firewall administration & security
Worked on firewall migration and administration, including NAT, VPN, access rules and network connectivity between infrastructure segments.
05
Network Segmentation
VLAN & infrastructure segmentation
Worked with VLAN-based segmentation and firewall controls to separate infrastructure and control communication between network areas.
06
PowerShell Administration & Microsoft 365 Automation
Practical scripting & administration
Worked on PowerShell workflows for two practical administration tasks: user onboarding, and Microsoft 365 license/mailbox-based group management. The onboarding workflow reduced one process from approximately 20 minutes to under 3 minutes. The second workflow checks Microsoft 365 users for license and mailbox status, compares the results with on-premises AD, and updates an AD group so only users with qualifying mailboxes remain members.
04 / POWERSHELL & AUTOMATION
Practical scripting for administration.
I use PowerShell to automate repeatable Windows, Active Directory and Microsoft 365 administration tasks. I work with existing scripts, adapt them to requirements, build new workflows, test them and troubleshoot issues until the process works as intended.
I have worked on user onboarding automation as well as a Microsoft 365 workflow that checks license and mailbox status and keeps an on-premises AD group aligned with mailbox eligibility.
01 / USER ONBOARDING
~20 min → <3 min
Reduced the time required for a user onboarding workflow through PowerShell automation.
02 / MICROSOFT 365 & AD
License + Mailbox → AD Group
Checks Microsoft 365 users for license and mailbox status, compares the results with on-premises Active Directory, and updates the appropriate AD group based on mailbox eligibility.
05 / EXPERIENCE
My career path from technical support into system and infrastructure administration.
DEC 2023 — PRESENT
System Administrator
NHK Technologies · Navi Mumbai, Maharashtra
- Manage 35+ Windows servers across production and development environments, including Active Directory, Group Policy, DNS and DHCP.
- Support Microsoft 365 and Entra ID services, including Exchange Online, MFA and Conditional Access.
- Administer 50+ Hyper-V virtual machines with backup, replication and disaster recovery requirements.
- Configure and maintain Sophos and SonicWall firewalls, including NAT, VPN and access rules.
- Work with VLAN-based network segmentation and firewall controls to separate infrastructure and control traffic.
- Develop PowerShell automation for user onboarding and other administration tasks; one onboarding workflow was reduced from approximately 20 minutes to under 3 minutes.
- Troubleshoot server, network and identity issues and handle day-to-day support requirements.
OCT 2021 — OCT 2022
Systems & DevOps Support Engineer
Imaginativo Infotech Pvt. Ltd. · Durgapur, West Bengal
- Provided CI/CD and build/deployment support for application environments.
- Worked with PowerShell automation for repeatable administration and support tasks.
- Supported Azure DevOps administration and related deployment workflows.
MAY 2020 — SEP 2021
Freelance Web & Systems Support
Aauencoders.com · Durgapur, West Bengal
- Maintained and supported websites, hosting environments and basic server configurations.
- Handled troubleshooting, updates, backups and performance-related tasks.
- Provided technical support and minor automation for client environments.
FEB 2018 — APR 2020
System Administrator
Proteligen Marketing Pvt Ltd. · Kolkata, West Bengal
- Installed and configured workstations, user accounts and server access.
- Monitored system performance and performed routine checks to maintain availability.
- Managed daily data uploads and reporting for dialer campaign operations.
- Diagnosed and resolved hardware, software and network connectivity issues.
APR 2015 — JAN 2018
Computer Sales & Service
Multi Computech Systems · Andal, West Bengal
- Advised customers on computer hardware and software solutions.
- Configured and deployed desktop systems based on client requirements.
- Provided in-person and remote technical support and troubleshooting.
- Assisted clients with product selection and technical guidance.
JUL 2011 — MAR 2015
Technical Support / Team Lead Responsibilities
Wizard E-Marketing Pvt Ltd. · Kolkata, West Bengal
- Started in a customer-facing role and moved into internal technical support after the team identified my technical background.
- Handled inbound technical support issues and day-to-day troubleshooting.
- Later took team-lead responsibilities, supporting a team of technicians with technical issues and daily operations.
- Monitored team performance, prepared operational reports and helped train team members.
06 / CAREER DIRECTION
Moving toward Azure.
I want to combine my Windows and infrastructure experience with stronger cloud skills in Azure administration, resource deployment and resource management.
Azure AdministratorSystem AdministratorInfrastructure / Server SupportCloud Support
07 / EDUCATION
Education, certification and professional training.
HIGHEST FORMAL EDUCATION
BSc IT
Kuvempu University · 2011
CERTIFICATION
Microsoft AZ-104
In Progress
COURSE
GNIIT
NIIT · 2008–2011
08 / CV
Explore the detail here.
09 / CONTACT