Browse CentOS job posts for project examples or post your job on Upwork for free!

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, 126 CentOS projects are completed every quarter on Upwork.


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.

Last updated: October 1, 2015
Clear all filters

Petr B.

Petr B.

Senior Developer, Consultant

Russia - Tests: 5 - Portfolio: 2

I have strong background in UNIX/Linux software development, Master's Degree in Computer Science. I worked on Enterprise high-load distributed hosting automation systems as a Team Leader (3.5 years in SWsoft, Inc., now called Parallels). For the last 6 years I'm running my own small software development business in Russia with primary focus on Python/Django apps. Not pure Web but often involving integration with hardware (Proximity Cards, Sensor Screens) or external systems like Payment Processing, SMS Gateways, GABRIEL (Airline Reservation System), etc. I can take an idea and turn it into a working business, through all the intermediate stages. Also I have experience of investing my own funds in my projects, so I feel the difference between "perfect code" in a month and "good enough" code that increases the revenue right now. Nevertheless, my code is very good: no copy-paste, always written with performance, flexibility and security in mind, etc. On oDesk I'm looking for (and actually find :) interesting projects with a sight on long-term fruitful cooperation. I'm also open to smaller activities (e.g., consulting) where my knowledge can be helpful.

Groups: Coding Champs

100% Job Success
$40.00 /hr
1,733 hours

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

100% Job Success
$33.33 /hr
46 hours

Denis Lemeshko

Denis Lemeshko

Unix Administrator


I have large experience in: * Linux/FreeBSD maintaince/troubleshooting (RHEL, Centos, Debian, Ubuntu), * Networking (dhcp, DNS:bind/named, vpn: openvpn/pptp, firewalls: iptables/ipfw, qos, proxies), * Web servers (apache, nginx, lighttpd), * Mail servers (exim, postfix, antispam/ antivirus: clamav/spamassassin, dovecot), * Bulk marketing (Dkim, spf, high speed/inboxing, interspire), * Automation (perl/shell/awk scripting), * Monitoring (nagios, zabbix), * Hosting panels (ISPmanager).

$11.11 /hr
0 hours

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

Sergei L.

Sergei L.

Database engineer & system architect

Russia - Tests: 6

My experience: - Creation architecture of - working now in 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:

Groups: Coding Champs, Microsoft Certified Professionals

$30.00 /hr
134 hours

Vitaliy Vasilenko

Vitaliy Vasilenko

Python Developer and Linux Server Administrator

Ukraine - Tests: 2

I am a python developer, QA engineer and *nix system administrator, and I seek a challenging and rewarding tasks. I have more then five years of work experience. My core skills are: * Linux administration (Ubuntu, Debian, CentOS) * FreeBSD administration (7, 8, 9) * Monitoring (Nagios, Cacti, Zabbix) * Databases (MySQL, MariaDB, PostgreSQL, MongoDB) * Highload * VCS (git, bazaar)

$10.00 /hr
0 hours

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.

Associated with: ClusterFoundry Agency

$26.67 /hr
1,137 hours

Roman Gorshunov

Roman Gorshunov

UNIX/Linux Systems Administrator

Slovakia - Tests: 3

I'm just starting my career on oDesk, that is why price per hour is so low. === Be the first to hire me! === What I would like to do as a freelancer at oDesk: - Provide Operating systems environment support for Application/DB services teams - Automate routine tasks - machines should work, people should think - Reviewed and implemented High/Low level designs - Package Applications with RPM and automated OS installation/setup Projects I have been participating in which am I proud of: - Completed design and deployed four high availability clusters for Oracle databases and applications on Red Hat Enterprise Linux; wrote work instructions and trained services support specialists - Completed design and implementation for IBM AIX cluster based on p740, AIX 6.1 and PowerHA - Run a storage migration project, migrated Terabytes of data from old to the new Storage system without applications downtime

$14.44 /hr
8 hours

Robin J.

Robin J.

Server Administrator and Automation Expert Linux / Windows

India - Tests: 2

Approx 4 years of experience in the field of Server Administration of Linux/Unix/Solaris/Windows. Good experience in the following points: Full Server Installation and configuration with the latest patches Hardening server Server security Server optimization Live server migration Server monitoring Expertise areas: 1. Linux Server Distributions (RedHat, CentOS, Fedora, Ubuntu) 2. WebServers (Apache/Litespeed, Nginx, Tomcat, Jboss) 3. Hosting Control Panel (WHM/C-Panel, Direct Admin,ISPConfig, Plesk Panel) 4. Monitoring Tools (Nagios, Cacti, Mrtg, Prtg) 5.Server Security (Iptables, CSF, Rkhunter, Chkrootkits, SSHD, TCP Wrapper) 6. Database (MySql, Oracle) 7. Mail Server (SendMail, Exim Mail, Zimbra, QMail) 8. Virtualiation (Virtuozoo, Hyper-V, OpenVz, Xen) 9. Scripting (Bash Shell) 10. Other: DNS, DHCP NFS, FTP, Smabha, Telnet, Ldap, NIS

81% Job Success
$12.00 /hr
152 hours