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: July 1, 2015
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  1. Minh N.

    Minh N.

    Server Admin/Linux/Unix/AWS Ec2/ Nginx /WordPress/Magento/Odoo

    Vietnam - Last active: 4 days ago - Tests: 7 - Portfolio: 16

    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. 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)

    Groups: Bluehost Developers and Designers

    $38.89 /hr
    1,854 hours
    4.86
  2. Mark Ritchie

    Mark Ritchie

    Senior Systems Admin, Network Admin

    Canada - Last active: 14 days ago - Tests: 4 - Portfolio: 1

    An IT Professional with over 15 years hands on experience on Systems, Servers and VMWare administration. Specialties: 1. Windows Server 2008 2. Microsoft Exchange Server 5.5, 2003, 2007, 2010, 2013 3. Anti-virus/Malware removal 4. Active Directory, DNS, DHCP, File Services, DFS, WSUS administration and troubleshooting 5. Network configuration(tcp-ip/cisco ios/monitoring) 6. Symanted Backupexec, Acronis, Appassure Replay 7. VPN and Remote access 8. Disaster Recovery, from bare metal restores, to VMware rebuilds

    $55.56 /hr
    110 hours
    4.93
  3. Alexander C.

    Alexander C.

    Scala / Java / Haskell developer, Full Stack Engineer, Consultant

    Russia - Last active: 05/31/2014 - Tests: 2 - Portfolio: 2

    Java developer with 8 years of experience. Now also Groovy(2 years) and Scala(1.5 years) developer. Java: Hadoop, Nutch , Lucene/SOLR/ElasticSearch, Morphia(MongoDB ORM), parsers/crawlers(using Apache Httpclient, HtmlUnit and own microframework), Web MVC(Struts 1.x/Grails), Java Desktop Applicatins(Swing) / Applets, webservices (w. Restlet framework), RabbitMQ Java client, Riak Java Client Scala: PlayFramework 2.x, Lift, Akka, ReactiveMongo Groovy: Groovy scripts / Gant build scripts / Gradle Databases: SQL(PostgreSQL/MySQL), MongoDB, Riak, SOLR/ElasticSearch PHP scripts, linux(fedora/centos/ubuntu) server administration, SVN / Git, SEO methods/scripts, affiliate marketing. Check my blog(chepurnoy.org)/GitHub(kushti) also.

    $60.00 /hr
    1,026 hours
    4.99
  4. Rafal K.

    Rafal K.

    PHP Team Lead / Architect / Senior developer

    Poland - Last active: 1 month 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
  5. Shantonu Sarker

    Shantonu Sarker

    Performance & Automation Engineer,Java/C# Unit Tester ,QA Architect

    Bangladesh - Last active: 1 month ago - Tests: 9 - Portfolio: 33

    9+ Years Experienced,Highly skilled Test Developer From Bangladesh:Work Areas. 1. Performance Testing, Debugging, Profiling & Investigation(Jmeter, LoadRunner, ANTS,DotTrace, Yourkit)** 2. Automation/Unit Testing in Web and Mobile Apps(Selenium, CodeCeption, Robotium, Sahi, Pex-Mole-Calabash)** 3. Software/Framework Development / Data Scrapping(Java/C#)** 4. End to End Software Test Design/Planning/Strategy** Exp : http://shantonusarker.blogspot.com/p/experience.html . Offers : http://shantonusarker.blogspot.com/p/hireme.html . My Gadgets & Gears : http://shantonusarker.blogspot.com/p/gadgets.html* Experienced areas : -Performance testing in JMeter/Load UI/SOAP UI/ WAPT/LoadRunner/Visual Studio Load Test/WinRunner/WCF Test -Performance Profiling and Investigation for DotNet and Java Application using ANTS, DotTrace, Yourkit, PerfView, VisualVM, Hprof. -Functional testing/ Framework building in Selenium/Sahi/Coded UI, VS Test/TestComplete/TestNG/NUnit/XUnit/JUnit/Robotium/MonkeyTalk/Pex/Mole/Behave -Flash Automation using Genie/Flash Selenium -BDD with cucumber, Calabash-android, Ruby -Developing tools(C#,JAVA, C++) for testing ,validation & reporting. -Bing Map API/ Google MAP API integration with c# and java -Data Crawling/Scrapping using JAVA(Jsoup/nutch/solar) & C# DotNet -Unit Tests and Integration Tests on a. C#, ASP.Net,SharePoint 2010(on Layer Architecture with Nunit,XUnit, MS Test, PEX, Moles ,Behave) b. J2EE, J2SE (Junit, TestNG, c. Android (Junit, Robotium ) d. PHP(php unit) /codeception/ CasperJS -Mobile Automation using Robotium /CalaBash/Monkey Talk -Security Testing(SQL Injection, Pin-testing, Cross Site Scripting) with Acunetix and Firefox/chrome extensions -Bug/Issue Investigation(Root Cause Analysis) and Tracking -Software design and documentation using UML 2.0 for Layer Architecture. -Training in SQA/Testing & Development (JAVA,C# .Net)

    Groups: Application Developers Alliance

    $40.00 /hr
    414 hours
    4.97
  6. lajpat singh

    lajpat singh

    PowerMTA/Interspire expert

    India - Last active: 21 days ago - Tests: 4

    I have expertise in configuration of PowerMTA and Interspire Email Marketer with Feedback Loop, Multi-Thread, Spins and other Addons. Currently running 9 server with /24 and /25 IP blocks. I have good relationship with Data Centers, can get fresh IPs with latest hardware server. We also offer Business Process Outsourcing, having good staff for Data Entry Projects with accuracy up to 95%. Previous Experience:- Having 6+ years of in Software Development, I have developed many Small and Enterprise level Web Applications using HTML, C#, ASP.NET, AJAX, MS SQL 2005, JavaScript, JQuery. I also have experience in Requirement Analysis, Designing, and Testing. I have been following best programming practices to meet quality standards. I have the ability to work as an individual and in a team.

    $33.33 /hr
    3 hours
    5.00
  7. David B.

    PHP/MySQL Developer Specializing in E-Commerce Platforms

    United States - Last active: 1 day ago - Tests: 7

    Over the last 9 years, I have specialized in e-commerce. I got my start working on simple osCommerce installations. Since then, I have progressed to building and working with highly-customized and integrated platforms, becoming an expert in PHP/MySQL, HTACCESS, JavaScript, AJAX, jQuery, and XML. I have also had the opportunity to work extensively with many other frameworks and API's. I have a lot of experience with Google Adwords API, credit card and shipping interfaces, and numerous other external libraries. I enjoy challenge of optimizing applications for peak performance inventing new methods for automation, streamlining back-end operations, and providing custom analytics. I pride myself on being able to jump into a project quickly and to creatively solve nagging problems. Although I do have experience with HTML and CSS, I am in no way a designer. I am strictly a coder, and, simply put, I love my work. I have worked with over 140 clients on 225+ projects. Excellent communication skills and driven work ethic. I am a perfectionist, and I am not happy until the client is happy.

    Groups: Application Developers Alliance

    $72.22 /hr
    3,388 hours
    3.91
  8. Braden T.

    Professional Project Manager

    United States - Last active: 1 month ago - Tests: 1 - Portfolio: 3

    I graduated from the University of Western Australia (UWA) with a Master’s in Business Administration (MBA) and also graduated, with distinction, with a Graduate Diploma in Business Administration (GDBA) from the same university. I also performed my undergraduate study at Vincennes University. I have a total of twenty years of experience in Information Technology (IT) and software development that includes a wide array of technologies, programming languages, platforms, and systems. Throughout my IT career, I have provided software development and IT consultancy services, formed a software engineering firm that created a Massive Multiplayer Online Role Playing Game (MMORPG), an on-line entertainment publication, a matchmaking site, a collaborative art software, and a social media art site. I was also a technical contributor for the development team of Undernet, an Internet Relay Chat (IRC) network that became popular in the 90's. Strategically located in the Philippines, I manage cross-cultural teams from different countries in Asia using my international management experience to bridge cultural and ethnic gaps to form cohesive and effective working groups (buzzword alert :-). When my time has allowed, I share my knowledge as a part-time professor with institutions such as the Australian Catholic University and the TIS in the Philippines. I am also an active member in Rotary Club.

    $40.00 /hr
    0 hours
    5.00
  9. Jibon Costa

    Jibon Costa Agency Contractor

    Joomla Designer/Developer/E-commerce

    Bangladesh - Last active: 3 days ago - Tests: 12 - Portfolio: 9

    Over 4 years experience on joomla. I have developed a wide range of website using Joomla, HTML, PHP & mysql including sites for startup companies, small companies even for educational institution like colleges or universities. Quick overview: > Joomla 1.5, 2.5, 3.X > Joomla extension development & customization > Joomla template design/coding from PSD or images > Joomla conversion from older version to latest version > PHP, HTML5, CSS3, Javascript, Jquery, Mysql > CakePHP framework > E-commerce Specialist > Virtuemart shopping system > Virtuemart extension development > Virtuemart customization > Jomsocial > Sobipro > Kunena forum > Mediawiki integration I have developed many extensions for joomla too. Can be able to create any kinds of e-commerce, static & flash site. I have a wide knowledge on customized different extensions & templates. Even I have good knowledge on CSS so I am able to change the existence template design also. I have also good knowledge on WordPress, Drupal, elgg for installation, configuration & Theme/Templates designed & customization. I am able to create any kinds of forum using phpbb, mybb, kunena ,vbulletin etc software's. I have also a good knowledge on Adobe Dreamweaver, Adobe photoshop, Illustrator for various purpose of designing & customization of templates. I am able to use accounting based software like tally, gnu cash for various accounting related purpose. I am honest,sincere & punctual of timing to doing job. Don't hesitate to accept me as your working partner

    Groups: Bluehost Developers and Designers

    Associated with: Dynamic Virtual Solution

    $22.22 /hr
    346 hours
    5.00