IT Infrastructure Analyst - Citrix, Security

Gunaseelan
Madhavan

20+ years of enterprise expertise in AWS/Azure Cloud Architecture, Citrix VDI, and Azure DevOps Engineering.

Azure / AVD AWS Architecture CI/CD Pipelines Citrix Cloud / ADC Nutanix / VMware
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20+
Years Experience
50+
Enterprise Projects
6+
SME Domains
12+
Certifications
Gunaseelan Madhavan
B.E. Electronics (ECE)
NatWest Group Plc
Senior Analyst / SME
+44 7442 316163
2023 – Present
Who I Am

About Me

A results-driven Senior Technical Architect and recognised SME with over 20 years of progressive experience architecting, transforming, and securing enterprise-scale technology environments.

Currently at NatWest Group Plc, I serve as a Senior Analyst — IT Infrastructure Services & Citrix, Security SME, playing a pivotal role in orchestrating enterprise-scale cloud strategies and robust infrastructure transformations. My career is defined by empowering high-performance technical teams to deliver seamless transitions from legacy on-premises environments to a modern digital workplace, integrating cloud-driven features that measurably improve business productivity.

Cloud Architecture
DevSecOps
Infrastructure
EUC / VDI
Automation
Governance
Full Profile

Technical Expertise

A deep dive into the technologies and methodologies I specialise in at an enterprise scale.

Multi-Cloud Architecture

Architecting enterprise Landing Zones across Azure, AWS, and GCP with automated Infrastructure as Code via Terraform & Bicep.

  • Azure Landing Zones & AWS Control Tower
  • Terraform, Bicep & ARM IaC Automation
  • Azure Virtual WAN & Multi-Region Mesh Routing
  • Azure Arc Kubernetes GitOps (Flux v2)
  • FinOps AI & GPU Workload Cost Governance

AD & Identity Security

Enterprise Active Directory architecture, Entra ID zero-trust identity, hardware passkeys, and Microsoft Purview DLP.

  • Active Directory Forest & Group Policy (GPO)
  • Entra ID FIDO2 Hardware Passkeys & MFA
  • Entra Workload Identity OIDC Federation
  • Microsoft Purview DLP & Sensitivity Labels
  • Microsoft Sentinel SIEM & Threat Detection

EUC & VDI Transformation

Enterprise VDI design using Citrix Cloud DaaS, Azure Virtual Desktop (AVD), PVS, and AppLayering with FSLogix profile management.

  • Citrix DaaS & Azure Virtual Desktop (AVD)
  • Citrix PVS & AppLayering Image Automation
  • NetScaler ADC Gateway, WAF & UBV Security
  • FSLogix Profile Containers & Ivanti AppSense
  • Citrix Session Recording & AI Anomaly Blocking
  • NVIDIA GRID vGPU High-Performance Graphics

DevSecOps & Automation

Secure CI/CD release engineering, PowerShell DSC modules, automated security scanning, and SRE error budgeting.

  • Azure DevOps & GitHub Actions CI/CD
  • Enterprise PowerShell DSC & Module Development
  • Agentic AI Coding & DevOps Workflows
  • SAST Code Scanning & Vulnerability Audits
  • SRE Engineering (SLO, SLI & Error Budgets)

Hypervisors & Core Infra

Enterprise private cloud infrastructure leveraging Nutanix AOS/AHV, VMware vSphere clusters, and Windows Server.

  • Nutanix AOS, AHV & Prism Element
  • VMware vSphere, vCenter & ESXi Clusters
  • Windows Server (2003–2022) Administration
  • Hyper-Converged Infrastructure (HCI) Design
  • ITIL v4, PMP & Prince2 Service Governance
Explore Full Skillset
Credentials

Certifications & Badges

AWS Certified Security

Specialty — Amazon Web Services

AWS

Azure Solutions Architect

Expert (AZ-305) — Microsoft

Azure

RHCE

Red Hat Certified Engineer

Red Hat

PMP & Prince2

Project Management Knowledge

PM

ITIL Knowledge

ITSM Methodologies

ITIL
Latest Thoughts

Technical Insights

Articles and thought leadership on enterprise technology trends

Multi-Cloud 10 min read

Multi-Cloud Domain Dangling: Mitigating Subdomain Takeovers

Learn how deprovisioning cloud resources without DNS hygiene leads to unauthorized subdomain takeover. Detect and prevent dangling DNS vulnerabilities across AWS, Azure, and GCP.

Gunaseelan MadhavanRead More
DevSecOps 8 min read

Google Antigravity & Vercel: Modern Website Automation Workflow

Discover how the Google Antigravity AI pair-programmer seamlessly orchestrates website updates locally, syncs securely through GitHub, and deploys globally via Vercel.

Gunaseelan MadhavanRead More
Multi-Cloud 8 min read

Azure Automation: Storing and Executing PowerShell Scripts

Learn how to store safely, manage easily, and execute PowerShell scripts securely at scale using Azure Automation Runbooks.

Gunaseelan MadhavanRead More
View All Articles

Ready to solve your next architecture challenge?

Available for consulting, architecture reviews, and strategic technology engagements.

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