CentOS Freelancers

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CentOS Job Cost Overview

Typical total cost of Upwork CentOS projects based on completed and fixed-price jobs.

Upwork CentOS Jobs Completed Quarterly

On average, 148 CentOS projects are completed every quarter on Upwork.

148

Time to Complete Upwork CentOS Jobs

Time needed to complete a CentOS project on Upwork.

Average CentOS Freelancer Feedback Score

CentOS Upwork freelancers typically receive a client rating of 4.85.

4.85
Last updated: May 1, 2015
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  1. Maxim Vorobey

    Maxim Vorobey

    Senior Software Engineer/Architect

    Russia - Last active: 1 day ago - Tests: 3

    I am a web application developer specializing in PHP/JS with 15 years experience. strong OOP knowledge, MVC etc php, mysql, html, css, less, js, coffeescript twitter bootstrap, jquery, backbone.js, angular.js ajax, json, xml C/C++/Objective-C (just for fun) load balancing, big data, high traffic data scraping, data parsing saas, soap, rpc, rest phpunit, phpspec, tdd, bdd, xdebug symfony, symfony2, zend2, doctrine2, bitrix mysql, postgre, mongo (clustering, replications) memcached, redis, rabbitmq, sphinx ubuntu/debian/centos/archlinux/osx nginx, lighthttpd, node.js, apache2 git, mercurial, svn opengl, glsl api: paypal, facebook, twitter, livejournal, vkontakte, jira, mailchimp, mandrill, zendesk, amazon aws agile/scrum: jira, redmine

    Groups: Upwork Verified Web Developers

    $69.00 /hr
    2,268 hours
    5.00
  2. Igor S.

    Igor S.

    Linux sysadmin, cloud deployments specialist

    Czech Republic - Last active: 1 day ago - Tests: 9 - Portfolio: 1

    I would like to offer you my deep knowledge of servers hardware and software, which allows me to fine-tune servers according to their roles, and my ability to anticipate and solve problems in shortest time possible. No Windows please, Unices only, Linux preferrable. Lately my main point of interest has shifted to deploying and maintaining web projects in cloud environments. I am developing monitoring / management tool ( http://m-script.org ) and supporting existing installations, but I am very well familiar with all well known alternatives from both monitoring and cloud management side, so no problem to implement any of them. The point is, I know very well how it works. And how it doesn't, too :) I am interested in any system administration work, especially in cloud environments. The more challenging you setup is going to be, the better. Automated scalability, cross-clouds deployments, combination of traditional and dynamically scalable resources, DNS/Geo balancing - everything is possible, just let me know your needs.

    $40.00 /hr
    6,754 hours
    4.88
  3. Andrii K.

    Andrii K.

    System Administrator

    Ukraine - Last active: 1 day ago - Tests: 5 - Portfolio: 3

    Last 6 years I have engaged in system administration using Apache2, Nginx, PHP, Perl, Python and MySQL including sites for startup companies and small businesses. extensive experience in the deployment of sites and projects of varying complexity, and I am seeking opportunities help you to build your business. I have great experience in: - Linux maintaince/troubleshooting: Debian, CentOS, Gentoo, Ubuntu, RHEL etc - Apache2 + Nginx, Nginx + PHP-fpm, Nginx + PHP-fastcgi, MySQL, Varnish, Memcached. - Linux serverside: iptables, rsync, Bind, OpenVPN, - Mail: Exim, Dovecot, Postfix. - Cloud Hosting: Digitalocean, RackSpace, Amazon (EC2, AWS, S3), Linode, GoDaddy - Hosting providers : Softlayer, Hetzner. - Backup/Migration - Hosting panels : Plesk, whm\cPanel, ISP , DirectAdmin, Virtualmin - Virtualization: Xen, KVM, OpenVZ, Proxmox - Monitoring: Zabbix, Munin, Cacti, Nagios - CMS : Wordpress, Drupal, Magento, Joomla, CS-Cart

    $30.00 /hr
    1,500 hours
    4.99
  4. Minh N.

    Minh N.

    Linux Admin / Freelaner SystemAdmin /AWS Ec2/ Nginx /WordPress/Magento

    Vietnam - Last active: 18 hours ago - Tests: 6 - Portfolio: 4

    I have been Server Admin and Web Developer for over 10 years, I worked with many top-rated websites all over the world. I am expert with LEMP and LAMP system, very good at speeding up servers and sites. For some personal reasons, I MOVED back to Vietnam. I am also working at Elance and Freelancer. If you need references, please don't hesitate to contact me. http://vincosolution.com/ My Blog: http://blog.vincosolution.com/ My Linkedin: https://www.linkedin.com/profile/view?id=204192625 Security Portfolio: http://goo.gl/75iNSS http://packetstormsecurity.com/files/author/8194/ http://sangte.blogspot.com/ Hall of Fame: https://www.apachefriends.org/about.html - Linux maintaince/troubleshooting (RHEL, Centos, Debian, Ubuntu, FreeBSD, gentoo, Mac OS X Server) - Windows Maintaince / Troubletshooting (Windows Server 2003-2012, Hyper-V, Lync, SharePoint Server 2010-2013) - Virtualization: (Vmware Esxi 5.x, Openvz, Virtuozzo, Xen, KVM, Vserver) - Cloud hosting (Amazon EC2, AWS, S3, RDS, simple Cache) - Networking (dhcp, DNS:powerdns/bind/named, vpn: openvpn/pptp, firewalls: iptables/ipfw, qos, proxies, tcpdump) - Web servers (apache, nginx, lighttpd, tomcat, ssl installation and troubleshooting) - Caching ( apc/xcache/memcached/varnish/nginx) - Load Balancer (Nginx/Haproxy/Hardware LB) - Mail servers (exim, postfix, qmail, antispam/ antivirus: clamav/spamassassin/amavis, courier, dovecot) - Bulk marketing (Dkim, spf, high speed/inboxing, interspire) - Automation (puppet, perl/shell/awk scripting) - Monitoring (nagios, zabbix, munin) - Hosting Control Panels (Cpanel/WHM, Plesk, Directadmin, ISPconfig..). - Mobile Application (Android / iOS / Windows Phone)

    Groups: Bluehost Developers and Designers

    $38.89 /hr
    1,730 hours
    4.87
  5. Clayton K.

    Clayton K.

    Canadian Linux Sysadmin. Debian/Ubuntu/CentOS Django Python MySQL

    China - Last active: 18 hours ago - Tests: 4

    I am a native-English-speaking Canadian living in China, with a deep understanding of the Linux/LAMP ecosystem, and dedicated to getting the job done. Particularly strong with Amazon AWS, Django / Mezzanine, Apache/MySQL, network API communications, and back-end web application development. I usually have time to add small new projects, and software development projects. Ask me about big projects, my workload varies! http://expat-it.net/ http://blog.expat-it.net/

    Groups: Bluehost Developers and Designers, oDesk Verified Web Developers

    $26.67 /hr
    2,950 hours
    4.84
  6. Jalal K.

    Jalal K.

    PHP Web Development

    Bahrain - Last active: 1 day ago - Tests: 2

    Programming is my life and my language. My brother knew I was a programmer before I did. He bought me that first book when I was about 10. That was 23 years ago. I am a programmer with experience in many languages, platforms, and operating systems. I love working with small companies and startups. Whether you need someone to lead your team, program into the wee hours of the night, or just need someone to talk to, I can help. I have always enjoyed the challenge of creating interactive software. With the birth of the modern Internet, I found a new love in web development and web programming. I face every new piece of code as a fresh new beginning... a chance to do it even better, while, still using "what works" from the past. My objective, here at oDesk, it to provide potential employers with my expertise in the field of website design, development, and programming. #1 and All PHP, MYSQL, POSTGRE SQL, JavaME, Javascript, C++, Java J2EE, J2SE. Tomcat, Jboss, Amazon AWS Amazon EC2 Expertise: ========= Banking Software Development Web Development and web programming Softwares Server, DB Optimization

    Groups: Twilio

    $250.00 /hr
    1,111 hours
    5.00
  7. Igor C.

    Igor C. Agency Contractor

    RIA (Flex|AIR|ActionScript|Flash),(FMS|Red5|Wowza), (J2EE|PHP),(MySQL)

    Moldova - Last active: 18 hours ago - Tests: 7 - Portfolio: 15

    I am an RIA (Adobe Flex|AIR|ActionScript 3.0|Flash), Streaming Server (FMS|Red 5|Wowza), RDBMS (MySQL|MSSQL|Informix|Firebird), CMS (Alfresco|Sitefinity), J2EE, PHP developer with good applied experience. I have worked on a number of complex RIA/Game/Enterprise projects and apply the different patterns. I would like to participate in an interesting project where I can apply my skills. I always work towards providing quality work results and create as much optimal solutions as it is possible.

    Associated with: Web Epoch Interactive Inc. Agency, IT_MOLDOVA

    $34.44 /hr
    9,099 hours
    4.75
  8. Danish Ahmed

    Danish Ahmed Agency Contractor

    Linux Guru/MAC Expert/Server Specialist/Technology Consultant

    Pakistan - Last active: 4 days ago - Tests: 7 - Portfolio: 18

    Over the last 6 years, I have worked on a wide range of Servers Operating System Administration and Configuration. My core competency lies in providing complete support of Server administration and User support, and I am seeking opportunities to provide corporate support to utilize my skills and strength. I have good experience in the following Servers: Microsoft Windows Server 2000, 2003,2008 R2, Redhat Enterprise Linux, CENTOS 5.4, Fedora, Ubuntu, Oracle Enterprise Linux, OpenSUSE, OpenSolaris, MySQL, Microsoft SQL Server, etc SYSTEM ADMIN SKILLS (LINUX) - Install. Configure, Maintain Various Linux Destribution (Fedora, Redhat, Ubuntu, Ubuntu Server, CentOS, OpenSUSE. - Labtech working experience - ConnectWise working experience - VMware vSphere 4 / ESX 4 - VMware Virtual Datacenter configuration - VMware Expert. - SONICWALL Firewall Configuration - Administration Amazon EC2/S3 - ElasticFox Work experience - Plesk Server administration (Migration etc.) - Install and Configure IBM TSM Server 6.1 - Oracle E-business Suite Patching and Cloning - Backup and Restore Databases. - Install and COnfigure SSL certificates. - Managing and Administration of VPS servers. - Domain and Hosting Administration (Plesk, Cpanel, Webmin) - GamePanelX configuration (OpenSource Game Server Panel) - Install, Configure, Maintain MAC OS X. - Install, Configure, Maintain BIND Server - Install, Configure, Maintain DNS Server on windows server - Install, Configure, Maintain Webserver (Apache, IIS) - Install, Configure, Maintain FTP - Install, Configure, Maintain Mailservers (Exchange Server, Postfix, Dovecote, Sendmail, Qmail) - Install, Configure, Squid Server - Install, Configure, Maintain Linux based Firewall - Configure ISAPI Rewrite on II6 for User Friendly URL for SEO - Configure Rewrite mode on Apache Server. - Install, Configure, Maintain OpenLDAP. - Install, Configure, Maintain Active Directory. - Install, Configure, Maintain CMS. (Joomla, Wordpress) - Configure and Troubleshoot Pleask, Cpanel. - Configure and Troubleshoot IPTables. - Configure and Troubleshoot Samba server - Install, Configure and Maintain (MRTG, Cacti, PRTG) - Install and Configure Project management System - Deploy Helpdesk System. - Design Network Infrastructure. - Implement System and Network Security - Install, Configure and Maintain Antivirus Server (Trendmicro, Kaspersky) - Configure Bandwidth Splitting on Squid. - Implement and Design Virtualization (Hyper-V and Vmware) - LAMP Server Installation. - Ubuntu Kernel Panel Recovery - Amazon EC2 Instance Configuration - Backup and Restore Databases (SQL, MySQL) - SAN/RAID management - Open Source Firewall ADministration (pfSense, Zentyal/ebox, Endianfirewall) - SSL installation and configuration - Wordpress troubleshooting - CentOS VPS administration - Dedicate Server Management - WHM/Cpanel Administration - WHM/Plesk server security implementation - Domain Migration - Server Migration - IPtables Administration SYSTEM ADMIN SKILLS (MICROSOFT) - MCSE - MCSA (Preparation) - MCTIP (Preparation) - MS. SharePoint 2007, 2010 (Preparation) - MS. Exchange 2007, 2010 (Preparation) - SBS 2008 (Preparation) - MS SQL Administration - ISA 2004, 2006 and TMG (Preparation) - MICROSOFT PROJECTS -Deploy and Configure SBS 2003 -Deploy and configure SBS 2008 -Migrate SBS 2003 to SBS 2008 -Deploy and configure Active directory 2000, 2003 and 2008 -Migrate Active directory 2000 to 2003 and 2003 to 2008 -Deploy, Design and configure Exchange 2000, 2003, 2007 and 2010 -Migrate 2003 to 2003, 2003 to 2007, 2003 to 2010 and 2007 to 2010 (complete Migration) -Deploy, Design and configure SharePoint 2007 and 2010 - Migrate SharePoint 2007 to 2010 -Deploy, Design and configure ISA 2000, 2004, 2006 and TMG 2010 -Migrate ISA 2006 to TMG 2010 -Deploy and configure SQL 2000, 2005 and 2008 (Administration) -Deploy and configure WSUS server -Deploy and configure IISA 6 and IIS 7 -Deploy and configure Microsoft SCCM 2012 (on process) -Deploy and configure forefront Security antivirus 2010 -Deploy and configure LYCN 2010 SEO SKILL SEM/SEO Consultants, SEO Services, PPC, Friendly URL, keyword analysis and selection competitive site analysis keyword density analysis optimization of site content optimization of meta tags, page titles, and descriptions inbound and outbound link placement internal linking strategies site submission Website Design and Development. My MCP Virtual Business Card: https://www.mcpvirtualbusinesscard.com/VBCServer/DanishAhmed/interactivecard

    Groups: Microsoft Certified Professionals

    Associated with: EraNext, GetMediaWise Agency

    $30.00 /hr
    4,233 hours
    4.82
  9. Mizanur R.

    Mizanur R.

    Magento, Volusion, Prestashop, Opencart, Amazon, eBay Developer

    Bangladesh - Last active: 1 day ago - Tests: 11 - Portfolio: 5

    Over the last 6 years, I have developed a wide range of websites using HTML & CSS, Java Script, PHP & MYSQL, CMS, , eCommerce, Joomla, Mambo, Shopping Carts , Zen Cart, Oscommerce, Magento, Opencart, Interspire Shopping Cart, Prestashop, Clipshare, Video Sharing Script, CRM, Boonex Dolphin, Social Engine, PHPFOX, vBulletin, Wordpress, Phpbb etc. including sites for start up companies and small businesses. My core competency lies in complete end-end management of a new website development project, and I am seeking opportunities to build websites from the ground up for you or your business. There are also a wide range of experience in Develop any kinds of website also specially eCommerce portal, Payment gateway integration. Troubleshooting any website problem and server related issue. Linux web server setup, management, maintained, migration, troubleshooting etc. Domain, Hosting maintained migration, Name server setup, Transfer etc. Office Network technical support and management network access. Setup implement and Maintains, auto predictive dialer for call center software Call list upload, Make dial plan for inbound and outbound calling, Make call speed per second, minutes, hours and any kinds troubleshooting. I also have some lots of experience include in the following areas too: SQL, Ajax, OOP, and software design and testing, Asterisk, Call Center, Call Center Configuration, CentOS, CMS, cPanel Server, CSS, E-Commerce, Elastix, Elastix Dialer, FFmpeg Server, Flash Media Server, GoAutoDial, Java, Javascript, Joomla, JSP, Linux, Magento, Marketing, Multimedia, MySQL, osCommerce, Perl_CGI, PHP, Plesk Server, Predictive Dialer, Programming, Red5 Media Server, Tomcat Server, Script Installation, Search Engine Optimization, Server Administration, Social Networking, System Administration, VicidialNOW, Visual Basic, VoIP, Website Design, WHMCS, Wordpress, Zen Cart, Open Cart,CRM.

    Groups: Bluehost Developers and Designers

    $11.11 /hr
    2,216 hours
    4.66