Rajnath Tamizh Selvan

12 — Professional Summary

Experienced System Engineer with expertise in Linux administration, networking, and IT infrastructure management. Skilled in installing, configuring, and maintaining servers, virtualization platforms, and cloud environments. Proficient in troubleshooting hardware, software, and network issues to ensure high system availability. Experienced in system monitoring, security, backup, and disaster recovery solutions. Passionate about automation, AI integration, and optimizing IT operations. Committed to delivering reliable, secure, and scalable technology solutions.

13 — Experience

System Engineer

ABOSS Technologies India (OPC) Private Limited

~1.2 years · Client-facing infrastructure and systems administration role

01

Microsoft 365 & Mail

Microsoft 365 Administration
Mailbox & PST Management
Email Migration
OneDrive Migration

02

Virtualization & Servers

Proxmox
VMware
Hyper-V
Windows Server
Ubuntu
GPU Server Deployment
NVIDIA Drivers

03

Network & Access

Networking
Tailscale VPN
Cloudflare DNS/SSL

04

Operations

Monitoring
Backup & Disaster Recovery
Bash
PowerShell
Technical Documentation
Remote Support

05

Key responsibilities

Administered Microsoft 365 environments, including user account management, mailbox administration, licensing, and security configurations.
Performed Outlook mailbox backups, PST import/export, and email recovery to ensure data protection and business continuity.
Executed email migrations between Outlook, Microsoft 365, and Google Workspace with minimal downtime, and managed OneDrive data migration, synchronization, and backup.
Installed, configured, and maintained virtualization platforms including Proxmox, VMware, and Hyper-V; deployed and managed Windows and Ubuntu servers for production and testing environments.
Configured Proxmox virtual machines, networking, storage, and backup solutions, and implemented disaster recovery using Wasabi Cloud Storage and other backup technologies.
Diagnosed and resolved hardware, OS, application, and network issues for end users and servers; performed server health monitoring, preventive maintenance, and performance optimization.
Configured and managed Tailscale VPN for secure remote connectivity, and Cloudflare DNS records, domain configurations, SSL certificates, and DNS troubleshooting.
Assisted in GPU server deployment, hardware installation, and NVIDIA driver configuration and troubleshooting.
Configured and troubleshot network services including IP addressing, DNS, DHCP, gateways, VLANs, and routing.
Provided remote technical support using RDP, AnyDesk, RustDesk, and TeamViewer, and automated routine administrative tasks using Bash and PowerShell scripting.
Created and maintained technical documentation, installation guides, SOPs, and infrastructure documentation; collaborated with internal teams to resolve incidents and improve system reliability.

14 — Previous Experience

Assistant Technician

Kaizen Infoserve Pvt. Ltd.

Client — Cognizant

Feb 2023 – May 2024 · IT asset and end-user support

01Managed company IT assets, including desktops, laptops, monitors, and peripherals.
02Installed, configured, and troubleshot Windows operating systems and business applications, including Microsoft Office and Visual Studio Code.
03Diagnosed and resolved hardware, software, printer, and system-related issues for end users.
04Created and managed employee user accounts and provided access to required applications and systems.
05Performed system maintenance, software installation, updates, and preventive troubleshooting.
06Provided technical support by resolving user incidents and ensuring timely issue resolution while maintaining service quality.

15 — Projects

Projects

01

Cyber Security Lab Setup

Rathinam College, Coimbatore

Planned and deployed the Cyber Security Lab infrastructure, configuring servers, networking equipment, and cybersecurity hardware for hands-on training.
Deployed and managed a Proxmox Virtual Environment (PVE) hosting multiple virtual machines with Windows and Linux operating systems for penetration testing, network security, and system administration exercises.
Installed and configured cybersecurity tools and optimized virtualization resources to deliver a stable, secure, high-performance lab environment for academic use.

Proxmox VE
Windows & Linux VMs
Penetration Testing
Network Security
System Administration

02

WayFinder

Smart Campus Navigation System

Developed an interactive campus navigation application enabling students, faculty, and visitors to locate classrooms, labs, departments, libraries, and hostels via digital map search and route guidance.
Designed the system to improve campus accessibility and reduce time spent finding destinations, focusing on a user-friendly, Google Maps-style navigation experience.

Campus Map
Destination Search
Route Guidance

16 — Skills

The skill wall

01Infrastructure & Virtualization

Linux
Windows Server
Mac OS
Proxmox
VMware
Server Hardware
GPU Servers
BIOS/UEFI
Server Installation & Configuration

02Networking

TCP/IP
DNS
DHCP
Network Diagnostics
Wi-Fi Troubleshooting
Tailscale Configuration

03Microsoft & Cloud Administration

Microsoft 365 Administration
Office 365 Administration
Active Directory
Windows Server Administration
Outlook Mail Backup & PST Management
Google Workspace Data Migration
Microsoft Migration

04Monitoring & Documentation

Grafana
Monitoring Scripts
SOP Creation
Network & System Documentation

05Tools & Support

SSH
PowerShell
Git
Remote Desktop Services
Remote Support
Microsoft Office

17 — Certification

RHCSA

Red Hat Certified System Administrator

Education

Diploma in Computer Science

Latha Mathavan Polytechnic College

SSLC (Class 10)

St. Michael Matriculation Hr. Sec. School, Madurai

Languages

Tamil

English

18 — Terminal

Ask the system.

rajnath@portfolio — bash

19 — Contact