VISHU DEV SINGH

System Administrator | Active Directory | Networking | Security
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Core Skills

Windows ServerActive DirectoryGroup Policy (GPO)Microsoft 365Azure (Basic)TCP/IPDNSDHCPVPNSophos FirewallNetwork SecurityEndpoint SecurityBackup & RestoreNAS ManagementDisaster RecoveryLinux AdministrationUser ManagementMikroTikRouting & SwitchingWazuh SIEMLog MonitoringIncident ManagementPowerShellAutomation (AI-assisted)

Tools

Microsoft Defender, Sophos Endpoint, Nmap, PowerShell, Remote Desktop (RDP), AnyDesk

Certifications

  • Google Cybersecurity Professional Certificate
  • IBM Cybersecurity Analyst
  • Google IT Support
  • Linux Foundation Certification
  • Ethical Hacking Essentials (EC-Council)

Education

Integrated MCA (Cybersecurity & Networking)
Parul University

Professional Summary

System Administrator with hands-on experience managing IT infrastructure for 200+ users, including Active Directory, Microsoft 365, networking, and firewall security (Sophos). Proven ability to resolve 20–30+ daily technical issues, maintain 99%+ system uptime, and improve operational efficiency. Skilled in backup management, network troubleshooting, and automation to streamline IT operations.

Professional Experience

Technical Support Engineer
Sriji Computers Pvt. Ltd | Oct 2025 – Present
  • Administered IT infrastructure for 200+ users, ensuring high availability and performance.
  • Provisioned and managed Active Directory accounts, access control, and organizational units.
  • Resolved 20–30+ daily support tickets related to Microsoft 365, improving user productivity.
  • Configured and monitored Sophos Firewall, strengthening network security posture.
  • Diagnosed and resolved network issues (DNS, DHCP, VPN, LAN/WAN).
  • Executed backup verification and restoration processes, ensuring disaster recovery readiness.
  • Maintained NAS systems to ensure consistent data backup and availability.
  • Utilized ticketing tools to manage incidents and meet SLA targets.
Desktop Support Engineer (Intern)
Mar 2025 – Aug 2025
  • Resolved 10–15+ daily hardware and software issues across multiple systems.
  • Supported Active Directory user access and troubleshooting.
  • Performed network diagnostics and assisted in issue resolution.

Projects

Tech-V License Manager

github.com/teztarrar/tech-v-license-manager

Developed a license management system using AI to automate tracking, reduce manual effort, and improve operational efficiency.

AutoIPChanger (Rust)

github.com/teztarrar/autoIPChanger

Built a Rust-based automation tool for Tor installation, proxy configuration, and IP rotation monitoring to enhance anonymity.