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On average, 131 CentOS projects are completed every quarter on Upwork.

131

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Average CentOS Freelancer Feedback Score

CentOS Upwork freelancers typically receive a client rating of 4.86.

4.86
Last updated: September 1, 2015
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  1. Artur R.

    Artur R.

    Systems Engineer/DevOps

    Canada - Tests: 4

    I am a Experienced Systems Engineer/DevOps with more then 15 yrs experience with Linux, Opensource and cloud technologies. I do have experience and offer my services in these areas: System Administration: Linux-all flavours (expert), BSD*(expert) Automation: Chef, Puppet, Jenkins Monitoring: Zabbix, Cacti, Munin, Nagios,Graphite Mail services: Postfix, Exim, Dovecot Virtualization: Xen, KVM, OpenVZ, Proxmox, AWS, Docker High availability: DRBD, GFS2, GlusterFS, Pacemaker, Heartbeat Common services: DNS, DHCP, File Sharing, NAT, iptables, ipfw Scripting: Bash, Python, Ruby Web servers: Apache, Nginx, Haproxy Database servers: MySQL, PostgreSQL, MongoDB,Oracle, RDS BigData: Elasticsearch,Hadoop CDN: Akamai, Cloudflare

    $40.00 /hr
    9 hours
    4.94
  2. Andrii K.

    Andrii K.

    System Administrator

    Ukraine - 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
    2,223 hours
    4.99
  3. Dmitry Gorlov

    Dmitry Gorlov

    Linux Admin / Oracle certified professional

    Russia - Tests: 11 - Portfolio: 1

    Under construction... I start my IT career since 1992 using FoxBase by IBM-compatible 286AT computer. Today my phone have more powerfull CPU :-) In Linux from 1997, begun from Redhat 6.0 In Oracle from 2003, begun from 8.1.7 10g OCP Certified in 2007. Microsoft MCP in 2007. http://krasitel.blogspot.com

    $20.00 /hr
    427 hours
    5.00
  4. Daniel Yavorovich

    Daniel Yavorovich

    System Administrator

    Ukraine - Portfolio: 1

    Operating Systems ● FreeBSD ● Linux Security ● iptables ● openssl ● jail ● clamav ● mod_security ● mod_clamav DNS ● Bind ● PowerDNS (+PostgreSQL / +MySQL) HTTP ● Apache ○ MPM: prefork, worker ○ mod_ssl, mod_php, mod_wsgi ● Nginx ○ Access control ○ Autoindex ○ Fast-CGI ○ uWSGI ○ Proxy ○ Cache ○ SSL ○ upload_progress_module ○ Control panel integration ■ Virtualmin ■ DirectAdmin ■ Plesk Proxy ● squid ○ basic auth ○ transparent proxy ○ cache ● 3proxy ○ http/socks ○ auth Raid ● Linux ○ md(0,1,5,6,10) ● FreeBSD ○ Gmirror / Striping File Systems: ● Ext 2,3,4 ● ReiserFS ● XFS ● OCFS2 ● ZFS (port to FreeBSD) ● CEPH CVS ● SVN ● Mercurial ● GIT ○ GitLab ○ GitoLite Backup ● rsync ● BackupPC ● Bacula FTP ● ProFTPd ● VSFTPD File sharing ● NFS ● SAMBA Control Panel ● Direct Admin ● Webmin+Virtualmin ● CPanel ● ISP-config ● Plesk Automatization ● Puppet ● Saltstack Monitoring ● Zabbix ● Nagios ● Munin ● Monit Network Understanding of theoretical and practical foundations of the networks (Data link, Network, Transport, Application Layers). VPN ● OpenVPN ● PPTP Database (SQL) ● MySQL (+MariaDB, +Percona) ● PostgreSQL Database (NoSQL) ● ElasticSearch ● Riak ● MongoDB ● Cassandra ● Redis Virtualization & Containerization ● KVM ● XEN ● OpenVZ ● LXC ● Docker ● Vagrant Cluster ● DRBD ○ master-slave ○ master-master (+ocfs2) ● Heartbeat ● Pacemaker Development ● actively use: ○ shell (bash, sh) ○ Python ● Frameworks ○ Django ○ Flask ○ Twisted ○ Tornado Cloud Solutions: ● AWS (EC2, S3, CloudFront, Route53) ● DigitalOcean ● RackSpace

    $33.33 /hr
    45 hours
    5.00
  5. Giorgi Javakhidze

    Giorgi Javakhidze

    MCITP | Vmware | Windows - Linux Systems Administrator

    Georgia - Tests: 6

    In the last 3 years, I have administered many IT networks, managing over 1000+ users. My core competency lies in complete managing of windows - linux based networks, including Active Directory, Exchange, MS-SQL, virtual clouds, based on VMware / Hyper-V and EVA Storage Area Network. I have deep experience in the following software solutions: Basic server services ( DNS, DHCP, WSUS, Vpn, etc. ) Windows 2003/2008 Server Windows 2003/2008 Active Directory Lync Server, Exchange Server, SharePoint Server. Monitoring: SCOM, Nagios Web Server: IIS, Apache Mail Servers : MDaemon, Postfix. Database: MSSQL, MySQL. Proxy / firewall solutions ( Squid, TMG, ISA ) VMware vShere and vCloud: ESXi, vCenter, vCloud Director, vShield

    $15.00 /hr
    183 hours
    5.00
  6. Sergei L.

    Sergei L.

    Database engineer & system architect

    Russia - Tests: 6

    My experience: - Creation architecture of www.ximad.com - working now in www.cs-cart.com as system architect Strong knowledge: - CentOS(RedHat), Debian, openSuSE - Nginx, Apache - Bash, PHP - MySQL - Amazon AWS( S3, EC2, SNS, CF, RDS ) Work with: - Memcache / Redis - MongoDB I've had various expirience with high-load servers and architectures and I'm looking for non-standard, complex work, that should be interesting for me. If I'll really like your task , I could give you even a discount :-) Profile on the stackoverflow: http://stackoverflow.com/users/1032042/sergei-lomakov

    Groups: Coding Champs, Microsoft Certified Professionals

    $30.00 /hr
    134 hours
    4.96
  7. Sergey P.

    Sergey P.

    VoIP and Linux Engineer

    Russia - Tests: 5

    OS: linux (gentoo, debian, centos ...), FreeBSD over 10 years using/administration Lang: perl, lua, shell (java, ruby, erlang studying) VoIP: asterisk, freeswitch, gnugk, kamailio/ser (over 7 year administration) PBX: Si2000 (v.5), Definity administration (SS7, ISDN) DB: mysql, postgresql Sec: DMVPN, IPsec, OpenVPN Publish: LaTeX

    $30.00 /hr
    76 hours
    5.00
  8. Evgeny K.

    .NET Team Lead

    Russia - Tests: 3

    Over 3 years of overall experience in IT field, analysing, designing and developing C# \ .NET based enterprise applications. Expert level knowledge of C# \ .NET. Excellent OO development skills, taked part in large projects, also in small and average projects too. Have architecting and designing experience, especially when working on project alone or with a small group. Experience in full development life cycle through OO Analysis/Design (sometimes used UML), to implementation, testing and deployment. Management and coordination activities of employees (have experience of leading 2-4 developer's team). Have a good experience of working with big (20+ developers, as developer) or small (1-5 developer's, as lead developer, architect) teams. Have a good experience of remote working and communicating. Programming languages and technologies: Visual Studio 2005/2008/2010, C#, .NET Framework 2.0+ (including WinForms, ASP.NET, WCF, Silverlight\WPF, LINQ, ADO.NET, Entity Framework), Web Services development (common and WCF services), WinAPI (+ P\Invoke), HTML, Javascript (+ jQuery), AJAX, CSS, T-SQL, MS SQL Server, XML (+ XSD, XSLT transformations), creating installers using WIX or standard Visual Studio install project. Microsoft Sharepoint development: Microsoft Office Sharepoint Designer, Microsoft Office Sharepoint Server (managing, administration, development), development: Web Services, Web Parts, Features, Jobs, Pages, Forms, Solutions etc.). Experience both with 2007 and 2010 versions. P.S: very interested in Haskell and Erlang projects.

    Groups: Application Developers Alliance, Coding Champs...

    $30.00 /hr
    5,808 hours
    5.00
  9. Jayson Cena

    Jayson Cena Agency Contractor

    Linux(Debian/Red Hat),Oracle DBA, Linux Cluster Admin,Virtualization-H

    Philippines - Tests: 4

    To obtain a position that will enable me to experience and learn new ideas on system administration like complicated enterprise infrastructure design specially high-availability and fault-tolerant infrastructres. My core competency lies in designing new system infrastructure using open-source software. I also have some experience in VB6, ASP, PHP. http://clusterfoundry.com

    Associated with: ClusterFoundry Agency

    $26.67 /hr
    1,137 hours
    5.00