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✅ ABOUT ME: I am a Professional Full Time Freelancer. I have 9+ years of experience working on Windows/Linux server administration, CICD Devops ,AWS, Azure, windows/Linux troubleshooting, HyperV, proxmox servers, DNS records mapping, IIS, Domains and DNS records management, active directory, web server, webhosting, databases administrations and Mail server implementations, administrations for the mail services MS Office365, Gsuite, Zimbara and postfix . ✅ WHY ME? • Full-time Professional – I work on Upwork as a full-time freelancer. I take every project seriously and I am highly professional. • Highly responsive – I’ll always get back to you in less than 02 hours. • 100% Client satisfaction – I provide revisions and modifications even after our contract ends. • I provide accurate solutions and just as important, I can guide you to future prospects and put your project on the right track. • Good communication skills – You will find me very friendly to talk to. ========================================= #Windows Servers - clients #Linux Server - clients #Web servers - IIS, Apache, XAMPP, Nginx and Tomcat #Database Servers - MSSQL, ORACLE, MYSQL, MongoDB #Webhosting tools- Plesk, cPanel and CWP #Cloud services providers - AWS, Azure, GCP, Digital Ocean, World stream, OVH Cloud, Hetzner and Hosting raja #Hosting providers - Hostinger, Bluehost, Namecheap, Godaddy, Bigrock and Hostgator #Active Directory - setup, users creation, Centralized Management, policy creation and enhanced Security #Troubleshooting - L1, L2 Tools used ============== Github, SVN IIS,Apache,Tomcat,Nginx , Apache Kafka and Wordpress SSH, RDP, VNC, Anydesk, Splashtop and screen connect Mobaxterm,Toad,SSMS and Workbench Plesk,WHM,Cpanel Active Directory, IAM Servicenow, Redmine, Microsoft Teams and Slack Previous Clients Feedback: 1- "Karthik was an exceptional Upworker to deal with. He was responsive, communicative, knowledgeable and proactive at solving my urgent technical issue (my businesses website was down for an unknown reason) and I wouldn't hesitate to recommend him to anyone else seeking an excellent technical support specialist. Thank you Karthik!" 2- "Karthik went above and beyond to progress with a very difficult issue in a very short period of time. He is kind, hard-working, and knowledgeable." 3- "I recently had the pleasure of working with "Karthik Raja" on installing PMB Software project, and I must say it was an outstanding experience from start to finish. I highly recommend "Karthik Raja" to anyone seeking top-notch freelancing services." 4- "he provides ideas to solve our problems he is a best gem have ever met. He focused only in customer satisfaction. no negative reviews." So why wait? Just invite me to your job on Upwork so we can discuss how to make your project a success. Let’s work together and get it done!! Thanks, Karthik

As a highly experienced IT professional with over 12 years of expertise in Tier 2 Helpdesk Support and Tier 3 Server Administration, I am committed to delivering exceptional technical support tailored to businesses of all sizes. My services cover a wide range of tasks focused on maintaining the stability, security, and efficiency of your IT environment. You can expect reliable, responsive, and knowledgeable support across areas such as Office 365 administration, user onboarding/offboarding, email troubleshooting, server maintenance, backup management, and more. I take pride in resolving issues quickly, documenting clearly, and ensuring minimal disruption to your business operations. With a strong dedication to excellence and a deep understanding of both user-level and infrastructure-level support, I aim to be a trusted IT partner for your organization. I’m ready and willing to assist with any technical challenges you face and look forward to responding to your queries.

I help businesses keep their IT systems, networks, users, and cloud environments secure, reliable, and running smoothly. With hands-on experience supporting business IT infrastructure across remote and multi-office environments, I specialize in network administration, IT support, Microsoft 365, Google Workspace, Windows Server, VPNs, firewalls, routers, switches, DNS, DHCP, and remote troubleshooting. Whether you need ongoing technical support, help resolving a difficult network issue, onboarding/offboarding users, configuring Microsoft 365, or managing your business network, I can step in and get things working efficiently. What I can help you with: • Network Engineering & Administration LAN/WAN configuration and troubleshooting Routers, switches and firewalls VPN configuration and troubleshooting TCP/IP, DNS and DHCP Network monitoring and performance troubleshooting Wi-Fi and connectivity issues Network security and configuration Network documentation and maintenance • IT Support & System Administration Windows and macOS troubleshooting Hardware and software support Remote desktop support User account and access management New employee onboarding/offboarding System troubleshooting and maintenance Server monitoring and administration IT asset and endpoint support • Microsoft 365 Administration Microsoft 365 Admin Center Exchange Online Outlook and email troubleshooting User and mailbox administration Microsoft 365 onboarding/offboarding Domain and DNS configuration Email delivery and authentication troubleshooting Security and access configuration • Google Workspace Administration Gmail administration User and account management Google Workspace onboarding/offboarding Domain configuration Email routing and troubleshooting Workspace security and access management • Windows Server & Virtualization Windows Server administration Active Directory support DNS/DHCP Server troubleshooting Hyper-V VMware Remote server support I currently support business IT environments and have experience working with infrastructure serving India and US operations, including remote network and Microsoft 365 administration. My approach is simple: understand the problem, identify the root cause, fix it properly, and document the solution when needed. I'm comfortable working on both one-time technical issues and ongoing as-needed IT support, making me a good fit for small businesses that don't need a full-time IT administrator but need an experienced engineer they can rely on. If you need a reliable Network Engineer or IT Support Engineer who can troubleshoot remotely and take ownership of technical problems, let's discuss your requirements.

Work on different roles e.g. Experienced network architects, network engineer, system administrator, IT manager, IT Consultant, Cloud Consultant and managed different portfolio in my carrier. 12+ years of experience in Network and System administration. Having experience in IIS, Active Directory, Virtualization(VMware & Hyper-V), Public Cloud(AWS, Azure), Private Cloud(Openstack, Microsoft Private Cloud). JIRA administrator and different atlassian products, Monitoring tools (PRTG, Nagios, etc), SCCM, Firewall(Juniiper, Cisco, Sonicwall, Fortigate, Sophos, Untangle, endian, pfsense), Antivirus and security products, DLP, encryption, password management, powershell, Azure-AD, VLAN, network design, VPN, router, switches, NAS & SAN Storage, ITIL processes, ISO compliance, HIPPA, GDPR. I worked for US, UK and Austalia based customers during my carrier, Education : MCA, MCITP, CCNA, ITIL, AWS

I am a Network & Virtualization Infrastructure Setup , Desktop support Engineer with over Nine years of experience with PLANNING , DESIGNING , CONFIGURATION, and TROUBLESHOOTING Networking systems I have hands-on experience for below vendors:- ● CISCO SWITCH & ROUTER, FIREWALL, WI-FI ●FortiGate FIREWALL ●SOPHOS ●ZYXEL ●HP SERVER & SWITCH ●ROUTING PROTOCOLS - EIGRP,OSPF,BGP,MPLS,VPN SWITCHING PROTOCOLS - RSTP, VTP, PRIVATE VLAN, HSRP, ●VPN PROTOCOLS - L2TP, PPTP and I am a CCNA TRAINED from NIIT NEW DELHI INDIA.

I help businesses run secure, reliable IT — across Microsoft 365, Azure, AWS, Google Cloud, servers, networks and security. With 14+ years in IT, including 6.5 years with US, Europe, and Australia-based MSPs, I've supported clients across US, UK, Australia, Africa, UAE, Singapore, Maldives, India, and Europe. I've delivered 78+ successful IT projects — spanning Azure, servers, Microsoft 365 and email/domain migrations — managing multiple client environments from a single, centralized point of support. This means one reliable partner handling your migrations, infrastructure, security and day-to-day IT, with everything documented and coordinated in one place. Whether you need a clean migration, a security clean-up, infrastructure set up properly, or dependable ongoing support, I can take it from assessment through to delivery — and explain it clearly. What I help with: Microsoft 365 & Email — administration, security, remediation; migrations (tenant-to-tenant, Google/GoDaddy → M365, mailbox, SharePoint/OneDrive, Teams & Teams Phone) Azure, AWS, Google Cloud — IaaS, Entra ID (Azure AD), Intune, Conditional Access, on-prem → Azure disaster recovery Windows & Linux Servers — Windows Server (2012–2019), Active Directory (migration, upgrade & cleanup), ADFS, RDS/AVD, MSSQL, IIS, Linux administration & hosting (cPanel, Apache) Networking & Security — Fortinet & SonicWall firewalls, VPN, DNS/DHCP, Wi-Fi; cybersecurity, MFA, endpoint protection, ISO 27001 / SOC 2 support Infrastructure & Continuity — VMware, Hyper-V, NAS, backup & disaster recovery, monitoring (Nagios/Checkmk) I focus on clear communication, on-time delivery and thorough documentation — you get the work done right, and explained in plain language. I also lead a small, experienced IT team, so reliable coverage across time zones is available when a project needs it.