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Upwork Red Hat Administration Jobs Completed Quarterly

On average, 5 Red Hat Administration projects are completed every quarter on Upwork.

5

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Red Hat Administration Upwork freelancers typically receive a client rating of 4.73.

4.73
Last updated: July 1, 2015

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  1. Bhushan Kumar Sharma

    Bhushan Kumar Sharma

    Linux Servers AWS Cloud Hosting Security CPanel Plesk VOIP PenTest

    India - Last active: 21 hours ago - Tests: 4 - Portfolio: 14

    Since 2001, I have been dedicatedly working with Linux Operating Systems & Open Source. Services Provided ::- Deployment, Configuration, Security, Hardening, Monitoring, Performance Tuning, Troubleshooting of Linux Server Roles AWS – Amazon Web Services Migration of Servers Hosting Panels like WHM/CPanel, Plesk etc Asterisk Dialers, VOIP and Call Center Solutions Customization of Linux Kernel & Distro with Rebranding Faculty of Post-Graduate Degree in Computer Sciences. Firewalls & Gateways Linux HPC - High Preformance Clusters Remote Server Support & Troubleshooting L3/L4 Security Auditing of Servers & Websites Cloud & Virtualization Technical Writing VPN - Site-to-Site, Road-warrior Vulnerability Assessment & Penetration Testing Kayako

    $16.67 /hr
    3,595 hours
    4.85
  2. Mihai-George Cornateanu

    Mihai-George Cornateanu

    Senior Linux System Engineer

    United Kingdom - Last active: 5 months ago - Tests: 12 - Portfolio: 1

    Linux System Administrator. LAMP Administrator. Security expert - Senior Ethical Hacker. PCI Compliance expert. ✔ Apache ✔ PHP ✔ MySQL ✔ DNS ✔ FTP ✔ Samba ✔ Postfix / Qmail / Sendmail ✔ DomainKey / DKIM / SPF ✔ Courier / Dovecot (IMAP/POP) ✔ SpamAssassin / ClamAV Amavis ✔ Kernel Hardening & Securing ✔ IPTables ✔ Wordpress, Joomla, PHPBB, Drupal ✔ Bash scripting

    $30.00 /hr
    186 hours
    4.85
  3. Robert M.

    Robert M.

    Networking/VoIP/Build/Test/SQA Professional

    United States - Last active: 9 days ago - Tests: 4 - Portfolio: 1

    I'm proficient in networking (Cisco - working on CCNA), operating systems (Linux, UNIX, Windows, MacOS and a few others) as well as Open Source PBX systems such as Asterisk, Trixbox, FreePBX, Elastix and PBXInAFlash. I have done extensive SQA (software testing) as well as scripting (bash) for administration of various servers. I can code in Python, PHP and some Java and Java Enterprise. I've worked extensively with Jenkins for build/deployment environments. I'm quite skilled with web application type servers, including Apache, Tomcat, JBoss, as well as various mail relays - Postfix and Sendmail. When it comes to security, I'm quite proficient at the command line with iptables as well as some open source type firewalls (Sonicwall). I am no stranger to packet analysis/sniffing a network with tools such as Wireshark, ettercap and nmap.

    $25.56 /hr
    118 hours
    4.60
  4. Tigran Budaghyan

    Tigran Budaghyan

    Linux System Engineer, Politehnica University of Bucharest

    Armenia - Last active: 12 days ago - Tests: 15

    Linux System Administrator System engineer Network administrator Computer security Database administration IT Consulting Operating Systems: Linux (Debian/Ubuntu, CentOS/RHEL), Windows, Windows Server, Cisco IOS, Cisco ASA, Fortigate Web servers: Apache, Nginx Databases: MySQL, MsSQL, Oracle, MS Access Mail servers: Postfix, Exim, Sendmail, Dovecot, ClamAV, SpamAssassin Networking: TCP/IP, NAT, VPN, DHCP, Firewall, Routing, iptables, FTP, SSH, Active Directory, Domain Controller Virtualization: xen, kvm, virtualbox Scripting: bash/sh, vbs Backup: rsync Monitoring: Munin General Computer Skills: Microsoft Office (Word, Excel, PowerPoint)

    $15.00 /hr
    1,074 hours
    5.00
  5. Mohamed Zain

    Mohamed Zain

    Sr Linux Systems Engineer | Dev/Ops | Open source integration Engineer

    Egypt - Last active: 4 days ago - Tests: 10 - Portfolio: 3

    +7 years experience install / manage and operate linux servers on a high scale machines infrastructure , open source solution consultancy using Nginx / PHP-fpm,MySQL,Kannel SMS Gateway,Memcache/Redis, Couchbase ,ElasticSearch / Solr Nagios/lcinga/munin, Puppet, Chef, Bash Scripting, PHP, Ruby, Vagrant, Docker , Git, AWS , VOIP, Asterisk also i have experience in load&stress testing and security vulnerability assessment

    $25.00 /hr
    72 hours
    5.00
  6. Petro Pikh

    Petro Pikh

    Linux, Unix, Windows administrator, VmWare, Network, Technical support

    Ukraine - Last active: 3 days ago - Tests: 6 - Portfolio: 1

    Linux, Unix, Windows system administrator, Virtualization, Networking. I have experience with: Amazon Web Services(EC2, S3, RDS), DigitalOcean, VoliaCloud OS: Windows, Linux, FreeBSD Virtualization: VmWare ESX, VmWare Workstation, VirtualBox, Proxmox, Hyper-V. Server panel: WHM/Cpanel, ISPmanager, Zpanel, Webmin Web-server: Apache, Nginx DNS-server: Bind FTP-server: vsFtpd, Filezilla Mail-server: Postfix, hMail Web-client from mail: SquirrelMail, Roundcube Network equipment: switch, router, ADSL-modem, Wireless access point, etc. (Cisco, D-link, Mikrotik) VPN: OpenVPN, PPTP Proxy-Server: Squid, UserGate CMS: Wordpress, Joomla Server software: PHP, SSH, Cron And many more that are not included in this list

    $22.22 /hr
    64 hours
    4.99
  7. Eric G.

    Eric G.

    Linux & Puppet Systems Administorator

    United States - Last active: 8 days ago - Tests: 9 - Portfolio: 1

    I have worked for many years in the managed services and server hosting industries, and have worn many hats. Everything from basic website management to troubleshooting large scale multihomed websites with clustered MySQL database backends. Currently I am handling Linux administrative and devops development work in both chef and puppet, in both Rackspace and AWS cloud provider spaces. What am I experienced with? The list is long: * Linux RHEL/CentOS, Gentoo, Debian/Ubuntu? You name it I've used it. * Configuration Management / devops I am currently and have previously supported customers with large deployments via chef and puppet. This is the kind of work I enjoy doing, so if you need someone who can handle a puppet manifest or chef cookbook I'm the guy to talk to. * Enterprise Networking. I have not only supported customers with their networking needs, but I maintain an extensive home lab for tinkering and testing. This includes a Cisco ASA 5505 and Catalyst 2960 switch. * Virtualization. Xen, VMWare, KVM, AWS, you name it I've worked with it. I'm currently looking to expand that experience a full fledged openstack deployment. * Storage. Whether it is something relatively mundane like NFS, or something complex like Ceph or your SAN/NAS' iSCSI or fiberchannel HBA. * Cloud hosting I am currently supporting clients in Amazon, Rackspace, and Digital Ocean. Further, I used to work for Rackspace so I have experience on both sides of the asile with their products. In summary I have been doing this long enough with enough different products and companies that I can meet any challenge put forth to me. With your assistance, my presonal github repository will gain something new and interesting. Personal blog: http://jowrjowr.github.io/

    $33.33 /hr
    959 hours
    4.60
  8. Duminda Karunaratne

    Duminda Karunaratne

    System Administrator

    Sri Lanka - Last active: 21 hours ago - Tests: 3 - Portfolio: 1

    I am the member of the MIS team and covering all release managements and server operations. I currently handle ESXi and ESX server farm in Australia and USA. • Have experience installing, maintaining and troubleshooting VMWare servers.  ESXi and ESX Vsphere servers.  Installing, maintaining iSCSI software. (OpeanFiler / OPEN-E / HP LeftHand) • Have experience installing, maintaining and troubleshooting MS Windows Server 2008 and 2003.  Installing, maintaining and troubleshooting domain controller.  Have experience in Active Directory maintaining and troubleshooting.  Customizing Group Policies.  Scheduling Backups.  Domain Replications.  DFS Replications.  Installing, maintaining and troubleshooting IIS 7 and 6.  DHCP Server installation, maintaining. • Have experience installing, maintaining and troubleshooting MS Office SharePoint Server 2007 and 2010. • Have experience installing, maintaining and troubleshooting MS Exchange server 2010. • Have experience installing, maintaining and troubleshooting following software firewalls.  MS ISA Server 2006.  Untangle (Open Source)  SmoothWall (Open Source) • Have experience installing, maintaining and troubleshooting PLESK control panel and Cpanel. • Have experience installing, maintaining and troubleshooting UBUNTU/ CentOS / RedHat / SUSE Linux / Sun Solaris servers.  Installing Apache Server, Virtual hosting, Apache SSH configurations and Apache failover clustering.  Installing MySQL Server, MySQL data base replication and failover cluster.  Installing FileZilla FTP Server  Scheduling cron jobs.  ISC DHCP failover clustering. • Have experience installing Windows 7, Windows XP, UBUNTU, KUBUTU, and Fedora. • Have experience working with Amazon cloud computing and Soft Layer cloud computing. • Have experience in installing, maintaining and troubleshooting wireless network. • Can maintain and troubleshoot LAN environment. • Have experience installing MS SQL 2008 and 2005 servers. I’m maintaining daily backups in MS SQL servers and database management. • Have Experience installing and maintaining CISCO ASA 5505 Firewall, CISCO Routers and CISCO Switches.  Routing Protocol RIP, IGRP, RIP v2, EIGRP, OSPF  Creating Vlan  Nating  Creating VPN

    $16.67 /hr
    510 hours
    4.99
  9. Mohammed Nasimuddin

    Mohammed Nasimuddin

    Linux Administrator

    India - Last active: 21 hours ago - Tests: 5

    I’m an independent consultant focused on: Linux and Open Source. Infrastructure development Worked mainly in the web-hosting area, my key accomplishments are listed below. I have more than 7 years of experience working with Linux and Open Source, providing solutions for small, medium and big companies. I have strong knowledge in Web server (Apache, Lighttpd, Nginx, PHP, Perl, Python..), Mail server (Sendmail, Qmail, Postfix, Zimbra...), DNS (Bind, Power DNS...), Firewall, Network, Database (MySQL, noSQL: couchbase...), load balancing (HaProxy, LVS..),web-hosting panels (CPanel, Plesk,DirectAdmin). However, my knowledge is not limited in these areas. My specialties are: - EC2 / Rackspace Cloud computing setup (incl. EC2/Rackspace API scripting) - Virtualization (KVM, Xen, OpenVZ/Virtuozzo) - Sites/Servers migration (Wordpress, CPanel, Plesk) - Shared file systems (nfs, drbd, ocfs2, gfs) - Server security (VPN, firewall, IDS) - Server performance optimization (Apache, Nginx, MySQL) - Email white-listing, spf, high load delivery, performance - Backup, shell scripts, etc. My core competency lies in complete end-end : + Setup Apache Tomcat ,PHP's Pear Package Manager ,Postgre SQL .... + Install Ruby on Rails on an Debian 7.0 (Wheezy) VPS using RVM + PHPMyAdmin MySQL database manager + Ioncube setup on LAMP ,LEMP , WAMP , MAMP + Setup Ruby 4 on Ubuntu 12.4 LTS + Install Rails, Apache, and MySQL on Ubuntu with Passenger + OpenEmm setup on CentOs 6.0 64bit + Administrate VPS and dedicated Server + Setup Sugar CRM and Zoho CRM workflow and modules. + Good experience with WordPress eCommerce site + Good skills with CMS and Joomla. + Proxmox Cluster setup and HA , VM Creation,update, Migration. + Sheepdog Storage cluster setup. + Media server setup with red5 , oflademo I reply to all emails and requests in a very prompt fashion and don't forget to update my clients about the progress before going off-line.

    $33.33 /hr
    9 hours
    5.00