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. Ahmed Sayed

    Ahmed Sayed

    Senior Linux Administrator / Virtualization /Asterisk / VoIP / cPanel

    Egypt - Last active: 1 day ago - Tests: 7 - Portfolio: 1

    I am a senior technical engineer who has 15 years IT experience in the following areas: Advanced Linux Cluster Administration Advanced Proxmox Cluster Administration Asterisk/Trixbox/Elastix/VoIP architect Advanced Knowledge of shell scripting Advanced Knowledge of Perl programming Network Administration Network Security (Penetration Testing) Server Auditing Technical Support Virtualization (mainly Parallels Virtuozzo/openVZ/ProxMox) Web hosting Control panels such as cPanel,Plesk,DirectAdmin Tweaking and Optimizing Apache for better performance Hardening PHP Data recovery

    $44.44 /hr
    6,953 hours
    5.00
  2. Oleksandr N.

    Oleksandr N.

    Senior System Administrator, Migration and Security L3 engineer, SSD

    Ukraine - Last active: 1 day ago - Tests: 20 - Portfolio: 16

    YOUR POSITIVE FEEDBACK IS THE HIGHEST AWARD FOR ME ;) Will do my best to assist you in any questions and tasks you may have =) Here is some info about my experience. SUMMARY Specialties: Information Technology / Internet / IT Division / Computer security/ Internet Services / System Administration/ Webmaster Support / Web Analysis/ SEO / SEM / Internet Marketing Web hosting services (SSD hosting solutions) EXPERIENCE: d(-_-)b Linux/Windows system administrator, Operations team EuroVPS/WebDomSolutions January 2012 - May 2013 Greece, Athens Responsibilities: - Tickets; - System administration and monitoring. Theoretical and practical skills: - Operating Systems: RedHat/CentOS/Fedora, Debian/Ubuntu, FreeBSD, Windows Server 2003/2008; - Virtualization: Virtuozzo, OpenVZ, VMware, Onapp Xen, Apache CloudStack; - Setup/configuration: nagios, kayako, racktables, confluence, observium, nginx, php-fpm, liteSpeed, Apache CloudStack, Hostbill, WHMCS, redmine; - Control panels: Plesk, WHM Cpanel. - Database Administration: SQL Server, MySQL, MariaDB ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <( -'.'- )> freelancer SEO freelance October 2010 - March 2012 (1 years 6 months) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ o(^_^)o System Administrator / Techsupport Webintellects/Webhostgian/Jumpline/Webdomsolutions November 2010 - March 2012 (1 year 5 months) US, Ohio Responsibilities: - Live Chat support, Tickets; - System/Server/Control Panel administration; - Nagios monitoring; - Internet research and work with technical documentation. Operating Systems: * RedHat/CentOS,Fedora * Windows server 2003/2008 * VPS setup and configuration (Parallels Virtuozzo Containers); Advanced theoretical and practical skills in such areas: - Operating Systems: RedHat/CentOS/Fedora, Windows server 2003/2008; - Virtualization: VPS setup and configuration (Parallels Virtuozzo); - Security: Advanced knowledge of Linux security, Firewalls ( IPtables, CSF, APF, BFD, Fail2Ban), Encryption ( SSL), SSH, Host Security Auditing; - Software: Apache servers (versions 1.3.x/2.2), DNS (BIND 9), QMail, Sendmail, exim, LAMP, Plesk/Exim/Cpanel (installing/upgrading/maintaining), Drupal, Wordpress, Joomla, OsCommerce applications, Yum/RPM usage; - Database Administration: SQL Server 2003/2008, MySQL, MS access. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ b(^_^)d Internet Marketing Specialist || Web Analyst DCoM Soft, Inc. December 2009 – August 2010 (9 months) Responsibilities: - Internet Marketing strategy and tactics - Information architecture and Web site content planning - Research of partners - Internet Market Research - Research Usability Design - Online promotion of company's web-based products Skills: - Search Engine Optimisation (SEO) - Paid online Marketing / Pay per Click Management (PPC) - SEO Copywriting/Editing - Social Media Optimization and Marketing (SMO/SMM) - Experience running USA-targeted social Marketing - Writing press releases - Social networking (Twitter, Facebook, Google follow etc) - Google Products, AdWords/AdSense, Google Analytics, Webmaster tools, Google Merchant, etc. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ \(^_^)/ Customer Relations Representative || Advanced Technical Agent Ecommerce, Inc. May 2007 – October 2009 (2 years 6 months) Responsibilities: - Sales, billing and technical support in solving problems reported by clients; - Chat, helpdesk system, correspondence; - View, Adaptation, "repair" clients' sites; - Basic server/service diagnostic and reports to sysadmin department; - Internet research and work with technical documentation; - Work in team. Basic theoretical and practical skills in such areas: - Linux / Unix OS, Windows server 2000/2003, Windows XP/98; - Servers: Apache, bind, sendmail, ProFTP, MySQL, SQUID / SOCKS, MSSQL, Samba; - Easy coding: PHP, PERL / CGI, HTML, JavaScript, CF, ASP,. NET, C + +; - Widely used protocols (HTTP, HTTPS, SMTP, POP, IMAP, FTP (s), TCP / UDP, etc); - HSPHERE control panel (versions 2.3 and 3).

    $34.88 /hr
    1,243 hours
    5.00
  3. Luis fernando A.

    Luis fernando A.

    Linux Sysadmin and AWS Architect with huge web hosting experience

    Brazil - Last active: 2 months ago - Tests: 5

    I'm a creative and hardworking Linux System Administrator and Amazon Web Services Architect and developer. I've been supporting and delivering IT solutions especially for web hosting companies and its set of open source software (Apache, PHP, RoR, MySQL, HAproxy, iptables, OpenVPN and much more) since 2005. I've also worked at IBM managing a farm of more than 1000 Linux and AIX servers as well as its proprietary middleware (DB2, IHS, WebSphere and others).

    $50.00 /hr
    24 hours
    5.00
  4. Roman T.

    Roman T.

    System administrator/Web optimizator

    Russia - Last active: 1 day ago - Tests: 6 - Portfolio: 1

    Project management, magento development, magento speed optimization, mysql optimization, cacti, nginx, zabbix, openvpn, bgp, centos, debian, ubuntu, windows server 2003-2008-2012, MSSQL server, iis, asp, aws, amazon ec2, red5 installator, proxmox, mongodb, virtualization, proxmox, xenserver, openx, highload projects.

    $88.89 /hr
    1,837 hours
    4.92
  5. Andrii K.

    Andrii K.

    System Administrator

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

    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
    1,630 hours
    4.99
  6. Goran D.

    Goran D.

    System administrator, Software developer, DevOps, DB Admin

    Macedonia - Last active: 1 day ago - Tests: 21 - Portfolio: 1

    Continuously upgrading my knowledge and experience on many IT fields. My major expert areas: Cloud computing : AWS, Rackspace, Hostgator. Auto scaling, Optimizing, Minimizing costs, Monitoring Operating Systems : All Windows and Linux operating systems. TCP/IP networking, advanced routing, firewall, vpn, iptables... Development : Java, C#, Delphi, Shell scripts Databases: MySQL, PostrgeSQL, MsSQL, Oracle, MongoDB, Sqlite

    $26.00 /hr
    5,980 hours
    4.93
  7. Rafal K.

    Rafal K.

    PHP Team Lead / Architect / Senior developer

    Poland - Last active: 24 days ago - Tests: 5 - Portfolio: 2

    I'm interesting in long term projects. Business process automation to bring good quality of service is my main goal. As system architect I integrate best development practices to projects with huge clients base and complex business logic. This includes: - Continuous Integration (revision control system, testing, bugtracking, code quality, automatic deployment) - Application health monitoring and notifications - System backups and disaster recovery plan - Api building (REST API, SOAP) - Integration with remote systems - Working in SCRUM/KANBUN enviroment My preferable tools for new projects implementation and migration of legacy code are currently Zend Framework 2, Symfony 2 and Phalcon. As an in-office employee I had 7 years experience in IT software development area. Now I'm totally focused on fulltime remote work with flexible worktime. Usually this includes morning/weekly meetings and bugtracking system to add tasks. Most of the time I'm available on Skype, Hangouts and email. My personal mobile phone number can be used for emergency notifications/calls too. Technology stack: - Zend Framework 2, Symfony 2, Phalcon (all with TDD in PHPUnit) - Doctrine2 based on MySQL (MariaDB with TokuDB), PostgreSQL, MongoDB(TokuMX) - Apache - Memcached - Git/Svn - Jira / Bitbucket - Continuous Integration (Jenkins) - AngularJS

    $55.56 /hr
    45 hours
    5.00
  8. Jay C.

    Jay C.

    Linux administrator / Devops engineer - AWS, Vmware, Puppet, Amazon

    India - Last active: 8 days ago - Tests: 1 - Portfolio: 2

    I am self-motivated professional with over 10 yrs. of experience, I have strong work ethic and productive self-starter, proven with success being a freelancer at oDesk. I perform each project to the fullest of my capabilities and with the dedication that is expected from a professional as myself. Team player - Participated in multiple projects, joining large teams, effectively co-working with other professionals Effective leader - Took over leadership and managed team resources to achieve goals meeting deadlines. I've great experience with: - OS deployment, configuration and troubleshooting: CentOS, Ubuntu, Windows Server 2003 - 2012R2. - AWS (RDS, EC2, SES, S3, CloudFront, VPC, Route53, RedShift, Elastic Beanstalk etc.) - Web / Mail / Application: Apache, Tomcat, Send mail, Zimbra, Postfix, Qmail, Squirrelmail, FTP, Samba, OpenLDAP, POP3/ IMAPS & IIS server, Courier Map, Request Tracker, Openfire IM Server, Kickstart Server, LTSP, Cpanel, WHM and Plesk, Redhat Directory Server, CAS. MS Active Directory Server, WSUS Server, Atlassian JIRA\Confluence deployment and troubleshooting. - Virtualization: Vmware Server, Vmware ESXi Server. - Network Monitoring Tools: NagiOS, MRTG, PRTG, Solarwind, OpManager, OpenNMS, Watsup Gold. - Database: MySQL, Postgresql & MS SQL. - CMS: Drupal, Wordpress, Joomla, Liferay - DMS: Alfresco Well experience in Linux & Windows System administration, Puppet deployment, LDAP, Postfix, NFS/NIS, Samba, MySQL, Liferay, Alfresco, Tomcat, PHP, Apache and many others technologies.

    $20.00 /hr
    1,973 hours
    5.00
  9. Dmitry Zhmurko

    Dmitry Zhmurko

    Linux system administrator, DevOps consultant, Nagios Icinga expert

    Ukraine - Last active: 8 days ago - Tests: 8 - Portfolio: 5

    High-skilled self-motivated professional with over 7 years of experience in Linux/Unix administration. Strong skills in hosting services including design of networks, servers and services. I have done several projects for designing of infrastructure from ground zero to ready systems including development area for Web Development companies with staging/pre-production environments. Positive experience in design and implementation solutions for High-Load web projects. - Linux system administration (Debian/Ubuntu and CentOS/RHEL) - PHP and Ruby/Rails software development background, - involved into JAVA projects as build and configuration manager - deployment with Ant, Hudson/Jenkins, Rake/Capistrano - pro-active monitoring with Icinga 2 and Nagios 4 - scheduled backups and disaster recovery verifications - apply DevOps methodology for better cooperation with developers.

    $28.00 /hr
    15 hours
    5.00
  10. Eugene Vivdich

    Eugene Vivdich

    Senior Linux System Engineer

    Ukraine - Last active: 19 days ago - Tests: 2

    Skills/Technologies: Apache, Nginx, Haproxy, Nagios, Zabbix, Postfix, Dovecot, MySQL, PostgreSQL, Redis, Git, Bash, Xen, OpenVZ Virtualization, IPtables, Shell Scripting, Troubleshooting, Bind, Squid, Samba, PHP Scripting, Chef, Puppet, Deep MySQL+PHP+Apache/Nginx optimization, CI. Environment building/configuration: Jira + Confluence + Crowd + Stash/Bamboo. OS: CentOS, RedHat, Gentoo, Debian. Eugene is ready to build/optimize your company's IT infrastructure, environment architecture, build Continuous Integration and product environment using world lead Atlassian Jira/Confluence/Crowd/Stash/Bamboo products. Also he is providing hosting and personal system engineering consultations. Eugene have more than 10 years background in system engineering, network building, HA, virtualisation, HA storage, databases, email servers, web servers but also in advertisements and entrepreneurship. In 2006 he founded developed and built successful advertising network using media panels installed in city buses Odessa, Ukraine.

    $25.00 /hr
    0 hours
    5.00