SSivakumar
Open to new opportunities · Doha, Qatar

Sivakumar

Lead IT Engineer — Infrastructure & Cybersecurity

14+ years building, securing and supporting enterprise IT. For over 9 years I’ve led IT and technical support for a leading engineering company in Qatar — from firewalls and threat detection to servers, cloud and Microsoft 365.

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S

Sivakumar

MCA · Bharathidasan University
14+Years in IT
9+Years in Qatar
15+Platforms managed
1 moAvailability

About me

I’m an IT infrastructure and cybersecurity engineer based in Doha. I lead day-to-day IT operations for a leading engineering company — keeping the network secure, servers and virtual platforms healthy, users productive and business data protected.

I work hands-on across multi-vendor security, Windows and Linux servers, VMware and Hyper-V, Azure and Microsoft 365. I prefer practical, automated solutions, so I use PowerShell to remove repetitive admin work and build clear reporting for management.

Core strengths

  • ✓Leading IT operations and end-user support
  • ✓Multi-vendor firewall and network security
  • ✓AI-driven threat detection and endpoint protection
  • ✓Server, virtualization and cloud administration
  • ✓Backup, disaster recovery and data recovery
  • ✓PowerShell automation and security reporting

Areas of expertise

Hands-on experience across the full stack — from the network edge to the end user.

Network security

Firewall policies, VPNs, segmentation and perimeter hardening across multiple vendors.

FortiGateCheck PointSonicWALLWatchGuardSophos

Threat detection & response

Detecting, investigating and containing threats, with strong endpoint protection.

DarktraceDefender XDRSentinelTrend Micro

Servers & virtualization

Deploying, patching and maintaining Windows and Linux servers on virtual platforms.

Windows ServerSUSE LinuxVMwareHyper-V

Cloud & Microsoft 365

Identity, MFA, licensing, SharePoint Online and tenant administration.

AzureEntra IDM365SharePoint

Automation & reporting

Scripts and dashboards that save time and give management clear visibility.

PowerShellPnP PowerShellExcel dashboards

Support & recovery

Fast troubleshooting, reliable backups and getting critical data back when it matters.

BackupData recoveryIT supportAntivirus

Technology stack

FortiGateCheck PointDarktraceMicrosoft DefenderMicrosoft Sentinel Trend MicroSonicWALLWatchGuardSophosWindows Server SUSE LinuxVMwareHyper-VAzureEntra ID Microsoft 365SharePoint OnlinePowerShellSAP connectivity

Professional experience

14+ years in IT, including 9+ years in the Gulf region.

  1. Lead IT Engineer

    Leading engineering company · Doha, Qatar
    9+ years · Current
    • Lead IT operations and technical support for the organisation.
    • Manage multi-vendor network security, including FortiGate and Check Point firewalls.
    • Run AI-driven threat detection with Darktrace alongside Microsoft Defender and endpoint protection.
    • Administer Windows and SUSE Linux servers on VMware and Hyper-V, plus Azure, Entra ID and Microsoft 365.
    • Own backup, disaster recovery and data recovery; support SAP connectivity.
    • Build PowerShell automation and security reports (MFA status, email quarantine) for management.

  2. IT Support & Infrastructure

    Earlier roles
    ~5 years
    • Built a strong foundation in desktop and server support, networking, antivirus and troubleshooting.

Selected projects

Recent work beyond day-to-day operations.

Security reporting

MFA and email-threat dashboards

Excel dashboards that turn raw exports into clear monthly reports — Entra ID / Microsoft 365 MFA coverage with licence comparison, and quarantined-email trends from Check Point Harmony.

Microsoft 365

SharePoint Online administration

Sites, permissions, document libraries, security, backup and migration.

Automation

PowerShell toolkit

PnP PowerShell scripts for onboarding, offboarding, permission reports, bulk uploads and site creation.

AI

Agentic AI project

A personal project evolving from an AI assistant into a multi-agent system, built with Claude Code.

Content

Tech & Tamil blogs

Two blogs with automated publishing — Tamil devotional and tech tutorials, and free & open-source software.

Education

Master of Computer Applications (MCA)

Bharathidasan University, India

Let’s work together

Open to IT infrastructure, cybersecurity and systems engineering roles in Qatar and across the Gulf. Available to join within one month.

Email me Visit my blog