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, 133 CentOS projects are completed every quarter on Upwork.

133

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: June 1, 2015
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  1. Minh N.

    Minh N.

    Server Admin/Linux/Unix/AWS Ec2/ Nginx /WordPress/Magento/Odoo

    Vietnam - Last active: 16 hours ago - Tests: 7 - Portfolio: 15

    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
    1,777 hours
    4.86
  2. Maxim Vorobey

    Maxim Vorobey

    Senior Software Engineer/Architect

    Russia - Last active: 16 hours ago - Tests: 3

    I am a web application developer specializing in PHP/JS with 15 years of 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 https://github.com/n3b

    $69.00 /hr
    2,421 hours
    5.00
  3. Andres Olvera

    Andres Olvera

    Expert Wordpress/PHP developer | Scripting expert

    Mexico - Last active: 1 month ago - Tests: 18 - Portfolio: 2

    I have lots of experience building and enhancing WordPress plugins and building themes from scratch. My main strengths are: - Clean coding - 100% Wordpress coding standard compliant - Availability - usually respond within 5 to 10 minutes to any queries during CST workhours - Fast and top quality work I also have experience developing web pages using Perl and/or PHP, Javascript/jQuery, VBScript, CSS, Ajax and MySQL databases. I worked for a Fortune 500 automotive company in a reporting and analysis position, and also building and maintaining a website in the company's intranet using Perl and MySQL. After that I was in charge of supporting a website built with Java and the Spring framework, using both MySQL and Oracle databases, for customers worldwide. I also worked at the tech support helpdesk for that same company for over a year, troubleshooting Linux servers and workstations, networking and other data related issues. I was also in charge of administering KBOX ticketing system for over a year, from content management to database administration, to scripting solutions for its customers. I also have knowledge in scripting using different technologies, such as VBScript, Javascript, Linux shell scripting, Perl, and some Powershell, as well as VBA for Excel and HTAs. I was also regularly troubleshooting C and Java programs for bugs and/or enhancements. After that, I moved to a company named Softtek as a Software Engineer, I was part of a team that develops Wordpress plugins and themes for an American multinational conglomerate corporation. The last position I held was for yet another company as a Linux intermediate administrator, where I was in charge of managing users with Centrify and I also installed Cacti to monitor some of the company's servers running CentOS. Currently, I work on my own mostly developing Wordpress plugins and themes. I have specialized myself working on web development, mainly PHP with MySQL databases, but also Javascript/jQuery for the front end.

    Groups: Bluehost Developers and Designers, LoginRadius

    $55.56 /hr
    90 hours
    4.96
  4. Fakhar Anwar

    Fakhar Anwar

    Freelance Project Manager / Software Engineer / Web Developer

    Pakistan - Last active: 14 days ago - Tests: 5 - Portfolio: 14

    I am seeking a challenging role to utilize my proven project management (Software design, development and deployment), software design and development(VISUAL BASIC.NET, VISUAL C#.NET, ASP.NET, SQL, AJAX, HTML5, CSS, jQuery, SMARTY, CodeIgnitor, RoR, AS 2.0, 3.0, Joomla, Wordpress, Drupal), system and network administration(SQL SERVER 2000, 2005, 2008, WINDOWS SERVER 2000, 2003, 2008) skills with devotion and responsibility to consciously contribute to the client’s satisfaction.

    $40.00 /hr
    243 hours
    4.99
  5. Igor S.

    Igor S.

    Linux sysadmin, cloud deployments specialist

    Czech Republic - Last active: 16 hours 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
    6,854 hours
    4.88
  6. Jacob Ekanem

    Jacob Ekanem

    Web Designer/Developer, WordPress Enthusiast, Mobile App Developer

    Nigeria - Last active: 1 month ago - Tests: 3 - Portfolio: 3

    Experience from over 12 years of web development has shaped me to be a successful web developer / designer using best practices and up to date technology for all project. Languages I uses include PHP, HTML(5), CSS(3) and JavaScript (Jquery, Angular). I have worked with WordPress since 2.0 and have a vast knowledge in its core functions. I am also very versatile in the use of frameworks like CodeIgniter and PHPCake. I work on all major platforms (linux, mac and windows) so no matter the environment, you can be sure work will get done.

    $45.00 /hr
    0 hours
    5.00
  7. Oscar Bass

    Oscar Bass Agency Contractor

    Senior UNIX System Engineer, LAMP, LEMP, Network Security, Cloud.

    United States - Last active: 3 days ago - Tests: 7 - Portfolio: 1

    Expert UNIX system administrator and network engineer. Got a problem? I can solve it! For more than 15 years I have been the I.T. backbone and support for many online companies. I use the most up to date standards for any project I am involved in. I work extremely quick and efficiently. If you have a problem let me help you solve it. OS: Linux - Expert, FreeBSD - Expert, AIX - Expert, HP-UX - Expert, Macintosh OS/X - Expert, Windows Server - Proficient Cloud services: AWS, Rackspace, OpSource, Linode Web servers: Apache, Nginx, Tomcat Database servers: Mysql, Postgresql Monitoring: Nagios, Monit, Munin, Cacti Scripting: bash, perl, shell Virtualization: OpenVZ, Xen, SolusVM Mail servers: Postfix, Exim, Sendmail, Dovecot Control panels: cPanel, Plesk, Direct Admin, Webmin/Virtualmin, ISPconfig, OpenPanel Other: standard network services (DNS, DHCP, LDAP, Samba, SVN/Git, http proxy, jabber, backups, monitoring etc), firewalls (iptables, ipfw, pf)

    Associated with: Bass Designs Agency

    $44.44 /hr
    242 hours
    4.96
  8. Alexey Malov

    Alexey Malov

    System Administator, Web Developer

    Colombia - Last active: 10/12/2014 - Tests: 5 - Portfolio: 2

    Hello, nice to meet you! I am Russian System Administrator and Web Developer living in Colombia. Speaking English fluently and Spanish basically. My passion is to support Linux servers (mostly Debian, but I am familiar with other distributions too), Apache2, Nginx, PHP-FPM, PHP sites, MySQL and PostgreSQL databases, ProFTPd, Java-applications (deployed at Tomcat and JBOSS), systems like Mantis BT, Bugzilla, Jira, Redmine etc. I love automating tasks, so I can write some scripts using Bash, Perl, Python, Ruby, use Fabric or deploy Puppet. You are welcome to ask me to install and configure SMTP servers like Exim, Postfix, Sendmail, POP3 and IMAP servers like Courier, DNS server - Bind and Amazon r53. I worked for some years in monitoring and I am well qualified in installing and configuring Nagios and Zabbix. I have got great experience at setup and support SVN (Subversion), Mercurial and GIT version control systems. I am also professional at site development (PHP, JavaScript, AJAX, HTML, XHTML, CSS). I worked with OpenLDAP and Active Directory. I am able to do some stress load testing for your sites with Apache Benchmark (ab) and Apache Jmeter. I am pretty familiar with such cloud hostings like Amazon WS and Rackspace. I am well aware of different network protocols including HTTP, HTTPS, SMTP, POP3, IMAP, LDAP, DNS, FTP, SNMP, SMPP, SSH. Thank you for your attention.

    $38.89 /hr
    547 hours
    4.66
  9. Sjaak Scheffer

    Sjaak Scheffer

    Network/System Engineer

    Netherlands - Last active: 12/20/2014 - Tests: 5

    More than 12 years experience with Linux Red Hat/CentOS and Debian/Ubuntu. I've done many big migrations from 1 website with a couple of MB's till thousands of websites with 80GB+. I prefer working directly on servers (via ssh access), but am also familiar with Plesk and cPanel/WHM. As a certified Linux Professional (lpi.org) I like working with bash as scripting language. I am also a network professional (CCNP security (Cisco)) and certified MySQL dba. I only do jobs which I can solve!

    $33.33 /hr
    34 hours
    4.95
  10. Fernando R.

    Fernando R.

    Ruby on Rails Developer with Strong Linux Background

    United States - Last active: 07/03/2012 - Tests: 3 - Portfolio: 1

    Very proficient RoR Web developer with a strong Linux/Unix background. Located in Florida, USA I work on EST timezone, allowed to work legally in the USA, I can attend to meetings, receive and make calls worldwide, as my customer you will be provided with a direct line to contact me if necessary. Over 11 years of experience on the IT industry, mainly working for major 500 Fortune US companies such as Cisco Systems, LexisNexis, Sun microsystems and others. My focus is always to keep things as simple as possible and make stuff better. Relevant skills : - Ruby on Rails 3 - Authorize.net , Credit card systems - RSpec , Capybara ( Testing ) TDD - Memcache - C ANSI - Linux / Unix (Solaris) - Shell scripting - Unix power tools: vi,awk,sed,bash,truss,top,strace,tcpdump,iptables.. - Capistrano - Amazon EC2 and Clouding computing. - VPS (Heroku, SliceHost, DreamHost) - Git Collaboration tools and extras that we offer to our customers : - US Phone number landline and cell phone - Skype. - Outlook Calendar (Exchange server) - EST U.S timezone, Located in Florida, near by major airport (FLL) - Fluent in English, Spanish and Portuguese (Spoken and Written) Don't hesitate to contact me if you have any questions.

    $33.33 /hr
    157 hours
    5.00