# Infra-stack Experience Topology--Full
SKILLS & EXPERIENCE CLOUD CORE IOT LINUX NETWORKING IDENTITY ITSM ON-PREM HARDWARE AI-INFRA IT-OPS SECURITY GRC AZURE ORACLE AWS ALIBABA RHEL UBUNTU SERVER AZURE LINUX SWITCHING VLAN VPN FIREWALL ENTRA ID PAM INTUNE AD-DC DHCP-DNS FILE STORAGE WDS SERVER SERVERS STORAGE ENDPOINTS VC SYSTEMS H100/H200 DGX EDGE AI-FOUNDRY MONITORING CHANGE MGMT ASSET MGMT CROWDSTRIKE NETSKOPE ZSCALER POLICIES AUDIT COMPLIANCE SECURITY GOVERNANCE
IT INFRASTRUCTURE ENGINEER

Hi, I'm Gokulakrishnan.
I Build & Secure the systems between the users and the services.

With over 5+ years of Enterprise experience spanning on-premises infrastructure, cloud environments, and high-performance AI infrastructure. I currently hold a critical, multi-disciplinary role within IT Operations and Cybersecurity, primarily responsible for the governance and administration of core infrastructure. Accountable for the end-to-end management of mission-critical server environments, ensuring high availability and strong operational performance. In addition to infrastructure implementation and oversight, I am experienced in datacenter operations and migrations. All of this backed by 6 years of STEM education in Electronics and Communication Engineering.

# Experience Topology
AI-INFRA IT-OPS ITSM SECURITY ON-PREM HARDWARE GRC CLOUD CORE LINUX IDENTITY IOT NETWORKING SKILLS & EXPERIENCE
~/Work

Experience

IT Infrastructure Engineer

FEB 2025 — PRESENT
Larsen & Toubro Construction
  • Translated business specifications into functional infrastructure designs, collaborating with software developers, DevOps, and cloud architects to ensure smooth, secure distributed hardware implementations.
  • Provision and maintain multi-cloud and on-premises environments across Microsoft Azure, AWS, and on-prem datacenters, configuring VPCs, subnets, route tables, firewalls, and VPNs to ensure high availability and network segmentation.
  • Execute physical datacenter operations, including rack installations, hardware provisioning, network cabling, and component-level diagnosis and replacement for high-density enterprise servers and switches.
  • Deploy, configure, and patch enterprise Windows Server and Linux environments (RHEL, CentOS, Ubuntu), hardening operating systems and automating core service roles across bare-metal and cloud infrastructure.
  • Provision, configure, and isolate dedicated computing environments for enterprise AI applications, implementing strict compute-hardening and access controls to protect sensitive model data and endpoints.
  • Architected, provisioned, and optimized enterprise compute clusters powered by NVIDIA H100 and H200 GPU servers, deploying specialized driver stacks, container runtimes, and host virtualization to accelerate model training and high-throughput inference workloads.
  • Designed and deployed resilient enterprise network topologies, configuring multi-tiered VLANs, ACLs, inter-VLAN routing, and firewall policies across physical core/access switches and cloud VPCs to enforce network isolation and prevent unauthorized lateral movement.
  • Monitor server fleets in coordination with the SOC and EDR platforms, executing rapid vulnerability remediation, patch management, and security controls to maintain ISO 27001 regulatory audit readiness.
  • Provisioned, hardened, and maintained heterogeneous enterprise environments across Windows Server and Linux distributions, configuring core server roles and executing proactive maintenance to uphold high system availability.
  • Architecture Translation & Operational Delivery: Collaborated across multidisciplinary engineering pods (spanning database administrators, developers, and security analysts) to translate high-level architectural designs into scalable, compliant hybrid cloud infrastructure under strict ITIL governance.
  • Collaborated with SecOps, IAM, and network engineering teams to enforce enterprise security baselines.

Senior System Engineer

APR 2023 — JAN 2025
Larsen & Toubro Construction -CIELHR
  • Administered CrowdStrike Falcon EDR across 35,000+ endpoints, overseeing threat detection, policy enforcement, sensor health, and rapid incident response to secure global operations.
  • Deployed and troubleshot Zscaler Zero Trust services (ZIA and ZPA), configuring secure application segmentation and user tunnels to enforce least-privilege remote access.
  • Provisioned and managed hybrid infrastructure across Microsoft Azure and on-premises environments (VMware ESXi, Hyper-V), deploying virtual machines and containerized workloads (Docker, LXC, Azure Container Instances).
  • Configured, tested, and maintained critical Windows Server roles and Linux services across bare-metal and virtual platforms.
  • Administered identity lifecycles across hybrid Active Directory and Azure AD (Entra ID), managing authentication protocols, SaaS application domain integrations, and compliance policies via Microsoft Intune.
  • Enterprise-wide migration from Zscaler to Netskope across 35,000+ global endpoints, deploying high-availability NPA publisher connectors to establish seamless ZTNA to internal applications.
  • Configured Netskope DLP policies to prevent unauthorized data exfiltration and ensure regulatory compliance.
  • Led technical audit-readiness workflows for ISO 27001 and external audits, participating in formal CAB reviews and executing thorough RCA to remediate recurring system incidents.
  • Partnered with vendors to evaluate emerging technologies, conduct technical PoCs, and execute hardware and network redesign initiatives across facilities.
  • Centralized and maintained mission-critical core network services globally including DHCP, WDS, Print Services, and IPAM, ensuring uniform standards.
  • Managed enterprise video conferencing infrastructure, configuring and supporting Polycom and Cisco VC hardware, codecs, and software across boardroom environments.

Systems Engineer

SEP 2021 — MAR 2023
Larsen & Toubro Construction -CIELHR
  • Directed daily operations for a multi-tiered support team (L0/L1), establishing standardized troubleshooting SOPs and training programs to elevate first-contact resolution rates.
  • Served as the dedicated technical advisor and support liaison to CEO, CFO, Directors, other C-suite ensuring 100% data confidentiality and zero-downtime executive workflows.
  • Administered enterprise infrastructure across headquarters, managing DHCP, Print Servers, and SolarWinds IPAM to uphold strict network reliability and high-availability service agreements.
  • Provided multi-region Tier-3 infrastructure support across distributed business units (India HQ, Middle East, and China), ensuring uniform system compliance and SLA adherence.
  • Maintained and optimized dedicated application servers running enterprise Robotic Process Automation (RPA) bots, coordinating across DevOps and security teams for patch management and deployment safety.
  • Coordinated with engineering teams to provision, configure, and harden host servers (including IIS and RPA platforms), ensuring seamless resource deployment and zero security regressions during application rollouts.
  • Maintained enterprise storage environments utilizing NetApp ONTAP and Dell EMC Isilon alongside hosting mission-critical internal web applications on Microsoft IIS.
  • Directed full technical production, AV infrastructure, and run-of-show logistics for 40–50 high-stakes executive town halls and board meetings annually without broadcast interruption.
  • Automated recurring system tasks, configurations, and maintenance routines using custom PowerShell and Batch scripts to eliminate manual overhead.
  • Configured, tested, and commissioned integrated video conferencing rooms, authoring technical deployment guides for operational handoff.
  • Enforced enterprise security baselines by administering McAfee Endpoint Security and configuring DLP policies to prevent unauthorized data exfiltration.
~/Skills

Technical Skills-What I work with

// CLOUD & VIRTUALIZATION

Cloud Computing & Virtualization

  • Cloud Platforms: Microsoft Azure, AWS, GCP, Oracle Cloud, Alibaba Cloud.
  • Virtualization & Containers: VMware ESXi, Microsoft Hyper-V, Proxmox, Docker, LXC, Windows Subsystem for Linux (WSL).
  • Workspaces & VDI: Hybrid cloud provisioning, Azure VDI.
  • VNet: Architecture, network segmentation, routing, access control, subnet & IP planning, NSGs, traffic filtering, VNet peering, and hybrid connectivity.
// SYSTEMS & COMPUTE

Systems Engineering & High-Performance Compute

  • Operating Systems: Windows Server (2016-2022), Linux (RHEL, CentOS, Ubuntu), macOS, Windows endpoints.
  • AI & Edge Compute: High-density AI compute configurations (NVIDIA H100/H200, DGX, Quadro RTX), Edge computing
  • Hardware & Storage: Enterprise bare-metal servers, SAN/NAS storage arrays and component-level diagnostics.
// NETWORKING & SECURITY

Networking, Security & Identity

  • Identity & Access Management: Microsoft Entra ID (Azure AD), Active Directory (AD DS), Microsoft Intune (MDM/MAM).
  • Network Infrastructure: Enterprise switches, VLANs, ACLs, DMZ configurations, site-to-site VPNs.
  • Endpoint & Network Security: CrowdStrike Falcon EDR, McAfee Endpoint Security, Zero Trust Architecture (Netskope, Zscaler), DLP.
  • Core Network Services: Windows DHCP, DNS, IPAM.
// OPERATIONS & GOVERNANCE

IT Operations, Collaboration & Governance

  • Unified Communications & AV: Enterprise VC Infrastructure (Cisco, Polycom codecs/hardware), Boardroom AV & Broadcast Logistics, Microsoft Teams, Microsoft 365.
  • Service Management (ITSM): ServiceNow, Symphony SummitAI, ITIL processes, Change Management (CAB), Asset Management, Monitoring.
  • Governance & Compliance (GRC): Security compliance enforcement, ISO 27001 audit readiness, SLA management.
  • Remote Management: BeyondTrust, DameWare, SCCM.
// SCRIPTING & AUTOMATION

Scripting, Automation & IoT

  • Programming & Scripting: Python, PowerShell, Bash, Batch file scripting, C.
  • Data & Automation Tools: Power Automate, Power BI, SQL Server Management Studio (SSMS), Anaconda.
  • IoT & Embedded Systems: Arduino, Raspberry Pi, LoRa, Z-Wave, IFTTT, Custom PCB designs.
~/Education
Bachelor of Engineering in Electronics and Communication
SSN College of Engineering
2018–2021
Technical diploma in Electronics and Communication
Panimalar Polytechnic College
2015–2018
~/key-achievements
~/certifications
MCSA · RHCE · CCNA
A+ & N+ Essentials
CompTIA Cloud+
Alibaba Cloud (ACA)
Azure — GUVI / IITM Research Park
Google IT Support
Enterprise System Management & Security — Coursera
Communication & Network Security — Cybrary
~/notable-technical-projects

Notable Technical Projects

// Enterprise Initiatives

Digital AI & Robotics Infrastructure Architecture

L&T DIGITAL AI · BARE-METAL SERVERS · ROUTING & SECURITY

Spearheaded the end-to-end IT infrastructure design and provisioning for L&T’s Digital AI & Robotics division. Deployed dedicated high-performance servers and engineered custom-tailored network routing and security policies to support specialized machine learning and robotics workloads from the ground up.

Infrastructure DesignAI & RoboticsHigh-Performance ComputeMachine LearningNetwork Routing

Next-Gen AI Compute Clusters

NVIDIA H100/H200 · CUDA · DOCKER · LXC · VLAN

Architected an isolated computing environment powered by bare-metal NVIDIA H100 and H200 GPU servers. Configured CUDA driver stacks, container runtimes (Docker/LXC), and strict VLAN segmentation to accelerate enterprise AI model training while protecting proprietary datasets.

NVIDIA H100 & H200CUDA StackDocker / LXCVLAN SegmentationModel Training

Global Zero Trust & Endpoint Security Overhaul

NETSKOPE ZTNA · CROWDSTRIKE FALCON · 802.1X NAC

Led a massive transition for 35,000+ endpoints, migrating from Zscaler to Netskope ZTNA architecture. Simultaneously engineered and deployed tailored CrowdStrike Falcon EDR policies across diverse regional departments and enforced 802.1x NAC for both LAN and WLAN perimeters.

35,000+ EndpointsNetskope ZTNACrowdStrike Falcon802.1x NACZero Trust
// Independent & Homelab Engineering

Advanced Homelab & Edge Computing Environment

HOMELAB · EDGE NODES · CLOUDFLARE · HYBRID CLOUD

Designed and maintain a multi-server homelab powerhouse for continuous testing of cloud and on-premise technologies. Manage single-board edge computing nodes and handle external web traffic routing using Cloudflare for active personal domains.

Multi-Server HomelabEdge NodesCloudflareHybrid CloudDNS & Routing

Custom IT Automation & Security Auditing Suite

PYTHON · POWERSHELL · BASH · SECURITY AUDITING

Authored a comprehensive suite of automation tools using Python, PowerShell, and Bash. Key scripts automate recursive file compression, complex PDF manipulation, and automated system security auditing across enterprise endpoints, eliminating hours of manual administrative overhead.

PythonPowerShellBashSecurity AuditingAutomation
~/About

A bit more about me

By day, mastermind behind the scenes, ensuring that environments operate effortlessly. I take pride in making processes more efficient and reliable.

My world is a blend of cutting-edge technology, strategic infrastructure design, and the kind of troubleshooting that would make Sherlock Holmes proud. Whether it’s optimizing existing systems or designing new solutions, I thrive on transforming technical complexity into elegant, efficient systems. For me, technology doesn't stop when I clock out. I am an avid homelabber, constantly experimenting within my own environments. My work sits at the intersection of reliability and reinvention.

I am constantly sharpening my technical edge, currently pursuing Cloud, cybersecurity, project management certifications to deepen my expertise.

// My Interests

Cloud computing, Server Administration, VMs & containers, Scripting, Networking, IT Infrastructure, IT operations, Security. (If it’s IT! I’m in)

5+years in infrastructure
35K+endpoints under management
500+servers cloud/on-prem under management
10+Core Services