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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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
Minh N.

Minh N.

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

Vietnam - Last active: 19 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
1,730 hours
4.86
Ilya I.

Ilya I.

Expert Linux administrator, Devops

Thailand - Last active: 19 hours ago - Tests: 7

My goal is customer satisfaction. If you need to get something done - leave it to me. OS: Linux - expert, FreeBSD and Windows Server - proficient Cloud services: AWS, Rackspace SCM: Puppet, Ansible Web servers: Apache, Nginx, Tomcat Database servers: Mysql, Postgresql Atlassian: Jira, Confluence, Crowd, etc - the whole suite Monitoring: Nagios, Groundwork, Zabbix, Monit, Munin, Cacti Virtualization: Openvz, Vmware ESXi/server, Proxmox Mail servers: Zimbra, Exim, Sendmail, Dovecot Backups: Bacula, duplicity, rsnapshot High availability: Corosync/Pacemaker, DRBD Other: standard network services (DNS, DHCP, LDAP, Samba, SVN/Git, http proxy, jabber, VPN, backups, monitoring etc), firewalls and routers (iptables, iproute, VLAN, bridging, bonding). Performance optimization: Magento, Wordpress, etc.

$95.00 /hr
2,522 hours
4.84
Petr Bavorovsky

Petr Bavorovsky

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
Ivan Ershov

Ivan Ershov

AWS Architect/Engineer/Devops

Russia - Last active: 19 hours ago - Tests: 11 - Portfolio: 2

Over the last 10 years, I have been working as technical support engineer/team leader/infrastructure architect for several large companies (hosting companies with more than 1000 of dedicated and several dozens of VPS servers, ecommerce application companies, small and large companies with different cloud setups from several to several hundreds of instances) My competency lies in planning, development, deployment and setup of new production environments, troubleshooting/support/improvement of existing production systems based on Linux/Unix. Have a lot of experience in automation/monitoring/backup of different distributed environments with LAMP stack and other applications, different clustering, scalability and high-availability techniques.

$38.89 /hr
1,634 hours
4.96
Oleksandr N.

Oleksandr N.

Senior System Administrator, Security officer, Mig...

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
1,208 hours
5.00
Igor S.

Igor S.

Linux sysadmin, cloud deployments specialist

Czech Republic - Last active: 19 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
6,725 hours
4.88
Ahmed Sayed

Ahmed Sayed

Senior Linux Administrator / Virtualization /Aster...

Egypt - Last active: 19 hours 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 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
6,759 hours
5.00
mohammad kamruzzaman

mohammad kamruzzaman Agency Contractor

Full stack web developer and VoIP Engineer, FreeSW...

Bangladesh - Last active: 19 hours ago - Tests: 1 - Portfolio: 2

i am a full stack web developer and server administrator. i have experiences on Django (python), Codeigniter (php), MongoDB, ElasticSearch, postgres, redis, rabbitMQ, celery, mysql, nodejs. you can hire me if you need to implement a distributed VoIP enabled service that is ready to scale. i am also doing newfies-dialer customization and maintenance for a long while. and also i will take projects like PBX, IVR, autodialer development. i have open source project customization experiences, for example, FusionPBX,Newifes-dialer,Astpp,vBilling,kazoo, Kannel

Groups: Twilio
Associated with: DT software house, NGS
$40.00 /hr
2,438 hours
4.56
Eugene Naydenov

Eugene Naydenov Agency Contractor

Expert in Python, JavaScript, SPA, PHP, HTML5, CSS...

Ukraine - Last active: 4 days ago - Tests: 10 - Portfolio: 4

Expert programmer, Scrum master, team leader. Looking for long term project on position of Senior/Lead software engineer. Preferred technologies: Python and JavaScript. I have over 5 years of experience in Python, Ruby, PHP, JavaScript, C/C++, C# and .NET (Windows Forms, WPF, WCF, ASP .NET), Java development. I also have a wide experience in the following areas: AJAX, SPA, SQL, OOP and OOD. I have skills of working with NoSQL and SQL-based databases such as MongoDB, Redis, MySQL, MS SQL Server, Oracle, FireBird, PostgreSQL, etc. Have good experience of writing the Node.js applications. Proficient in working with cloud solutions such as AWS. Past 3 years I've been working primary in a web-development area on position of lead software engineer with responsibilities of * Project and team management * Web application development * Testing of web application and its components * Reliability, security and performance of the server and the application You can find my CV in this document: https://docs.google.com/document/d/1lYhvx_Ugo1YPPquT8gTHqDx0ebxYZYOZ-GEQX8Nyepw/edit?usp=sharing

$45.00 /hr
6,669 hours
4.98