CentOS Freelancers

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

CentOS Job Cost Overview

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

oDesk CentOS Jobs Completed Quarterly

On average, 153 CentOS projects are completed every quarter on oDesk.

153

Time to Complete oDesk CentOS Jobs

Time needed to complete a CentOS project on oDesk.

Average CentOS Freelancer Feedback Score

CentOS oDesk freelancers typically receive a client rating of 4.85.

4.85
Last updated: April 1, 2015
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Clayton K.

Clayton K.

Canadian Linux Sysadmin. Debian/Ubuntu/CentOS Djan...

China - Last active: 1 day 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/

$26.67 /hr
2,913 hours
4.84
Ahmad Samir

Ahmad Samir Agency Contractor

Cpanel/WHM/Linux Administrator/Firewall/security/C...

Egypt - Last active: 3 days ago - Tests: 7 - Portfolio: 2

I possess 5+ years of experience in Linux server administration including installing & upgrading Apache,php,mysql and various types of open-source software also compiling and upgrading & installing kernels patches. Also I've good knowledge in installing & configuring virtual server management software ( proxmox, openvz, Ganeti). Got my B.Sc. in computer engineering and operational research, with a graduation project grade “Excellent A+” in image processing. As well as, I have managed to successfully earn a software diploma in network security , web crawling and software engineering with grade “Very Good A-”. If I can provide you with any further information on my background and qualifications, please let me know. Please note that : I do not accept any jobs related to wine/gambling/adult/.

Associated with: EGY-TECH Agency
$16.67 /hr
2,140 hours
4.90
Bogdan B.

Bogdan B.

Linux System Administrator / DevOps

United States - Last active: 1 day ago - Tests: 2 - Portfolio: 4

- Linux maintenance/troubleshooting (RHEL, Centos, Debian), - Cloud hosting (Amazon EC2, AWS, S3, Digital Ocean), - Networking (dhcp, DNS:powerdns/bind/named, vpn: openvpn/pptp, firewalls: iptables/ipfw, qos, proxies), - LAMP/LNMP Stack - Mail servers (exim, postfix , antispam/ antivirus: clamav/spamassassin/amavis, courier, dovecot), - Bulk marketing (DKIM, SPF,DMARK,ADSP, high speed/inboxing, Interspire, PowerMTA), - Automation (puppet, shell scripting), - Automation Deployment (Capistrano) - Monitoring (nagios,Icinga, zabbix,Cacti,Graphite), - Magento System Performance Optimization - Wordpress Performance Optimization - Mysql Perfomance Optimization, Replication - Full Disk Encryption / Remote Unlock /PXE unlock (Luks/DiskCryptor) - Load Balancer (haproxy)

$38.89 /hr
248 hours
5.00
Alex Fortuna

Alex Fortuna

Senior Ruby on Rails Developer / Development Consu...

Russia - Last active: 1 month ago - Tests: 9 - Portfolio: 2

I'm seeking opportunities to build high-quality dynamic web solutions in Ruby on Rails. I've got a solid programming background with over 15 years experience. I'm a self-organized, disciplined and quality-oriented performer with good team management skills. A list of skills/features follows. * Passion for programming. * 15+ years overall development experience in 10+ languages. * 10+ years team leadership experience. * 10+ years Unix admin and TCP/IP networking experience. * 7+ years Ruby experience. * 5+ years Ruby on Rails experience. * Contributing to Ruby/Rails open source community (https://github.com/dadooda). * Clean, distinct, well-documented and reusable code is a *MUST*. * Solid understanding and everyday use of TDD (RSpec). * Strong JavaScript: raw language, jQuery, frameworks. * Everyday Git usage. * Practical programmer’s knowledge of HTML/CSS. * Hands-on experience of building high-traffic web applications in Unix environment (nginx, memcached, SQL server tuning, load testing tools, etc.). * 10+ years LAMP experience.

$37.00 /hr
2,460 hours
4.64
Andres Olvera

Andres Olvera

Expert Wordpress/PHP developer | Scripting expert

Mexico - Last active: 6 days 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.

$55.56 /hr
90 hours
4.96
Andrey E.

Andrey E.

Web Scraping Expert and PHP Web Developer

Russia - Last active: 2 days ago - Tests: 7 - Portfolio: 12

I'm web scraping expert/full stack developer with 7+ years of commercial experience. I'm good problem solver holding M.S. in maths and computer science. Today I'm offering webscraping/php/javascript services as a freelancer. My main skills: • Web scraping, parsing, automation, data processing • Simplehtmldom, Goutte, Symfony Browser Kit, Cheerio, CasperJS, Regular Expressions, Xpath • PHP, JavaScript, Java, NodeJS, PhantomJS, LUA • HTML5, CSS3, LESS, Bootstrap Framework • MySQL, MongoDB, Redis • Memcached, ZeroMQ, ReactPHP • SocketIO, Websockets • REST, SOAP, XML, JSON • Matlab, Wolfram Mathematica • Jquery, KnockoutJS, BackboneJS, RequireJS • Prestashop, OpenCart • Experience working with APIs: Ebay, Spotify, Amazon AWS, Amazon MWS, Flickr, Facebook Graph, Vk.com, GitHub, Instagram and several others • Git, SVN • Apache, Nginx, Curl • Amazon AWS • Linux, Vagrant • Understanding of OOP principles and software design patterns • Teamwork experience My github account is https://github.com/256cats My blog: http://256cats.com/ Over the years I’ve developed a lot of web scrapers of different complexity mostly using PHP (simplehtmldom, browserkit) and NodeJS/PhantomJS (casperjs). Some were simple regex-based and others were complex distributed systems with multiple proxies and Amazon AWS support. Also I developed a wide range of websites using PHP, HTML, JavaScript, CSS and MySQL including several e-commerce websites (+ Prestashop, Opencart). I built sites both from scratch and using frameworks, developed custom modules and extended existing ones for my clients. I have experience in PHP/MySQL performance tuning. Last two years I was working as MMO game (Clash of Clans/Heroes of Might and Magic-like mechanics) logic/backend developer. I’ve implemented distributed message queues, realtime leaderboards with Redis, Mysql, PHP. Developed battle-related algorithms (game unit classes, attack/defend, shortest path, quadtree). Then I’ve done some frontend development, e.g. – developed embeddable javascript classifieds widget and fitness/health single page web application with realtime updates/notifications (HTML, CSS, JavaScript, Jquery, Knockout.js, MomentJS, REST, AJAX, Socket.io).

$39.90 /hr
146 hours
4.98
Minh N.

Minh N.

Linux Admin / Freelaner SystemAdmin /AWS Ec2/ Ngin...

Vietnam - Last active: 21 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)

$38.89 /hr
1,729 hours
4.86
Petr B.

Petr B.

Senior Developer, PM

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

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.

$40.00 /hr
1,519 hours
5.00
Fakhar Anwar

Fakhar Anwar

Freelance Project Manager / Software Engineer / We...

Pakistan - Last active: 2 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
4.98
Raskin P.

Raskin P.

VPN,Routing and Switching,Firewall Expert, Mikroti...

Bangladesh - Last active: 21 hours ago - Tests: 11 - Portfolio: 44

Network and System Administration Skills having near 6 years of Hands on experience on ISP and Telecom with good exposure on IT networks and systems design, planning and implementation ensuring proper security. Vendor Certification : CCNA (Cisco Certified Network Associate) CCNP Routing &Switching (Cisco Certified Network Professional) RHCE (Red Hat Certified Engineer) MCP (Microsoft Certified Professional) MTCNA (Mikrotik Certified Network Associate) MTCRE (Mikrotik Certified Routing Engineer) JNCIA (Juniper Certified Network Associate) ITIL-Foundation 2011 Course Completed : CCNA Security,CCNA Voice,CCIP BGP,CCIP MPLS Specialization * Routing and Switching: Cisco,Juniper,Mikrotik,HP,Zyxell, Netgear, Quagga, Linux Gateway,Egdemax,Dell * Firewall : Cisco ASA,PFSense,Cisco Pix,Zywall,Linux Iptables,QOS,Edgemax,Mikrotik, Nokia Checkpoint, Fortigate 1000, Juniper SRX 3600 * Server OS Platform : Centos,Ubuntu,Debian,Redhat,Windows Server 2003 & 2008.2012 * VPN (Remote Access/Site to Site): Mikrotik RouterOS,Cisco ASA,Open VPN, OpenSwan, PFSense,DD-WRT,Cisco Pix,PPTP Vpn linux,GRE over IPSEC,Linux IPSEC,Dell Sonicwall PF Sense,Strongswan,Windows Server 2003 , 2008, 2012, Zywall, Netgear,TP Link,Draytek Vigor,Forninet,Juniper Netscreen,Checkpoint,Cisco IPSEC/L2tp,AnyConnect SSL WebVPN. * Application Server : Mail,Dns,Dhcp,Proxy,Samba,Ftp,Web,Active Directory,Cacti,MRTG,Syslog,Free Radius,Daloradius,Phpmyadmin * Virtualization : Vmware,Linux Xen, Vmware ESXI * Application Load Balancer : Cisco ACE 4710,F5 Big IP LTM,Citrix Netscaller, Foundry Serverion, loadbalancer.org * Wireless : DD-WRT,Netgear,Linksys,Dlink,TP Link,Cisco Aironet 1100,1200,WLC,Cisco Lighweight AP joining to WLC. * IP Telephony : Core Asterisk,Elastix,Trixbox,Asterisk now,Free switch,ATA, IP Phone * Cloud : AWS EC2 Instance,DigitalOcean

$40.00 /hr
334 hours
4.94