I am a RedHat certified Systems Administrator/Engineer 1.5+ years experience in Linux server support/Webhosting Support, My expertise include Linux server support, Familiar with various control panels like cPanel,plesk,etc., MySQL, Web servers like Nginx,Apache,etc., Mail servers like postfix,exim,sendmail,etc.
I am looking forward to speaking with you about how we can work together.
NGINX
Exim
Web Host Manager
OpenVZ
cPanel
Xen Project Hypervisor
Linux System Administration
MySQL
Virtualization
Kernel-based Virtual Machine
Alana Mariam T.
Cochin, India
$18/hr
5.0
202 jobs
With more than a decade of hands-on experience in Linux server administration, I bring deep expertise in managing, optimizing, and troubleshooting complex Linux infrastructures. I have provided enterprise-grade web hosting and server support for major platforms including Hostinger, GoDaddy, Bluehost, OVH, DigitalOcean, Hetzner, and IONOS, supporting large-scale shared, VPS, and dedicated environments. My skill set includes comprehensive WordPress management and migrations, covering site deployments, performance optimization, security remediation, malware cleanup, and zero-downtime migrations. I also specialize in architecting and maintaining robust web stacks using Apache, Nginx, BIND DNS, PHP (5.x–8.x), and MySQL/MariaDB, with a strong focus on reliability, performance, and security.
I have a proven track record of handling critical tasks such as server security hardening, kernel upgrades, and server performance optimization. Additionally, I am proficient in administering and monitoring Linux servers remotely using advanced tools and technologies.
Key Specialties:
Linux System Administration (CentOS, AlmaLinux, RHEL, Debian, Ubuntu, CloudLinux)
Large-scale server migrations, including WordPress and Joomla migrations
Server upgrades, including CentOS 7 to AlmaLinux 8/9/10 transitions
Expertise in web hosting panels (cPanel, Plesk, DirectAdmin, Virtualmin) and cloud solutions (AWS EC2, Lightsail, DigitalOcean, Linode, Vultr, Google Cloud)
Expertise in DNS integration for Shopify, Wix, Cloudflare, Google WorkSpace, Microsoft 365
DNS administration, including advanced configurations for SPF, DMARC, and DKIM
PCI compliance management, server disaster recovery, and data restoration
Website security, including hack cleanups and proactive hardening
Tools and Technologies:
LAMP stacks, DNS, and mail servers (Exim/Postfix)
Backup solutions (R1Soft, rsync-based scripting)
Server monitoring (Nagios) and optimization tools
Security-focused tools like CSF and LFD
If you're looking for a dedicated and detail-oriented Linux server administrator who can ensure your systems run smoothly and securely, let's collaborate to meet your technical goals.
Server
WordPress Migration
DNS
CentOS
MariaDB
AWS Server Migration
Backup & Migration
Bash Programming
MySQL
Amazon Lightsail
Website Migration
cPanel
Debian
Linux System Administration
Ubuntu
Karthik R.
Chennai, India
$15/hr
4.7
84 jobs
✅ ABOUT ME:
I am a Professional Full Time Freelancer. I have 8+ 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
Microsoft IIS
Microsoft Windows
System Administration
TortoiseSVN
Database Management
Ashok K.
Tiruppur,Tamil Nadu, India
$5/hr
5.0
1 jobs
I am a Linux System Administrator with experience in the OpenVZ,XEN and KVM virtualization also work with the Cpanel,Virtualizor,SolusVM panels.
Work as the support engineer for 6 Months in the SolusVM panel.
Worked on various projects in webserver DNS LDAP and simple python scripting.
Migrated the Nextcloud project one server to another by upgrading. Also worked on integration project with SSO.
Linux System Administration
DNS
LDAP
NGINX
System Monitoring
SNMP
Python
Server Virtualization
Manjeet S.
Yamuna Nagar, India
$10/hr
4.9
132 jobs
Is your website, email, or VPS down or slow? As a Linux Server Administrator with 10+ years managing cPanel, AWS, and VPS infrastructure, I fix and secure servers fast so your business stays online without downtime.
I focus exclusively on server-side infrastructure, not web design or app development, which means I troubleshoot root causes fast: misconfigured Apache/Nginx, mail delivery failures, database bottlenecks, and security gaps that generic developers miss. Clients come to me for the fix, not the theory.
Here's what I handle for clients:
- Server setup & hardening on Ubuntu, CentOS, Debian with cPanel/WHM, Webmin, or Virtualmin
- AWS infrastructure: EC2, RDS, Lightsail, Elastic Beanstalk, DynamoDB, VPC
- Web server performance tuning: Apache, Nginx, PHP-FPM
- MySQL/MariaDB administration, monitoring, and backup strategy
- Email server setup and deliverability fixes: Postfix, SMTP/IMAP/POP3
- DNS (BIND), SSL/HTTPS, FTP/SFTP, Docker, Ansible automation, and 24/7 monitoring
123 completed jobs on Upwork, with clients repeatedly returning for urgent fixes like WordPress-on-VPS recovery, AWS SES email delivery setup, and emergency SMTP troubleshooting.
Send me a message describing your server issue or project and I'll reply with a clear plan, usually within a few hours.
Amazon Web Services
New Relic
Mail Server Implementation
Linux System Administration
MySQL
DevOps
Postfix SMTP Server
Amazon EC2
HTML5
Virtual Private Server
PHP
Mutturaj A.
Bangalore, India
$27/hr
4.6
144 jobs
We are experts of video/audio streaming, We have executed many projects on Wowza and Red5 and webrtc, opentok. We develop applications to stream from Android and IOS devices to server.
Wowza Media Server
WebRTC
Amazon Web Services
PHP
API Integration
Node.js
OpenCV
Microsoft Azure
Amazon Rekognition Video
FFmpeg
Agora.io
Video Stream
API
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