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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, 131 CentOS projects are completed every quarter on Upwork.

131

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 4.86.

4.86
Last updated: September 1, 2015
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  1. Joan-Alexander Grigorov

    Joan-Alexander Grigorov

    OMG-Certified UML Professional

    Bulgaria - Tests: 3 - Portfolio: 2

    Software Engineer over here! Domain-driven design enthusiast with passion for structuring flexible OO design with PHP. Certified as UML Professional (Fundamentals) by Object Management Group on December 2013. For the last 4 years I've been actively developing web applications using Zend Framework (since July 2012 I'm Zend Framework Certified Engineer). Expert in design patterns with over 4 years of professional experience. I'm developing enterprise web applications, file sharing systems, websites, web application frameworks, etc. Achieving high quality of code, good performance and reusable object-oriented software design is my primary goal when working. I don't underestimate documentation as my source code is always well documented, with end-user manuals when needed. In the last two years I've gained rich experience with Dependency Injection and Service Locators and successfully applied those approaches my projects. I'm always ready to learn new approaches, if they could make my work quicker and easier. I have experience in educating developers. I've been teaching students PHP, Zend Framework(basic and advanced levels), MySQL, jQuery, Design Patterns and etc. I'm seeking to develop big and complex web applications using the last technologies and software development methodologies.

    Groups: Zend Certified Engineers

    $20.00 /hr
    3,373 hours
    0.00
  2. Alexander C.

    Alexander C.

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

    Russia - 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
  3. 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
    5,791 hours
    5.00
  4. 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
  5. Andrew C.

    Andrew C.

    Linux/Unix System Engineer, Junior Python/Ruby Developer, Cloud Soluti

    Romania - Tests: 4

    Management Systems, provide Infrastructure solutions, always focused to deliver high available solutions, for my clients. OSs: Debian, Ubuntu, Centos WEB deployment: (installation / optimization / deployment /) using: - Apache, Nginx, PHP, MySQL, Varnish, Memcached, Java Applications based on Tomcat - Development Processes automation based on Jenkins, Puppet. - Deployment (configuration and administration) of web applications built on: - Drupal CMS, Magento, Zend, Symfony Framework Databases (installation, configuration, administration): Mongodb, MySQL Cloud Systems: AWS(auto scaling, Loadbalancer, EC2, S3, Route53, Automations scripts (API)), DigitalOcean PaaS: Openshift Monitoring Tools: - Capturing, analyzing and storing statistics with Logstash, Graylog2, AMPQ, Elasticsearch - Drawing maps with statistics Collectd, Graphite - Alerts, notifications and syslog with Dude, Nagios - Advanced knowledge of Nagios Hight secured VPN system: OpenVPN based Virtualization: ESXi, KVM, OpenVZ Networking: Advanced level of administration Cisco devices: CCNA Certified, Basic level Mikrotik routers Backup Bacula based Storage systems, NFS, Glusterfs. Subversion administration. Chat, Openfire based Basic level: Bash scripting, SQL, Ruby, Capistrano, MongoDB, Vagrant, F5 BIG-IP load balancer, Haproxy

    $27.78 /hr
    1,412 hours
    4.98
  6. Jalal K.

    Jalal K.

    PHP Web Development

    Bahrain - Tests: 2

    Programming is my life and my language. My brother knew I was a programmer before I did. He bought me that first book when I was about 10. That was 23 years ago. I am a programmer with experience in many languages, platforms, and operating systems. I love working with small companies and startups. Whether you need someone to lead your team, program into the wee hours of the night, or just need someone to talk to, I can help. I have always enjoyed the challenge of creating interactive software. With the birth of the modern Internet, I found a new love in web development and web programming. I face every new piece of code as a fresh new beginning... a chance to do it even better, while, still using "what works" from the past. My objective, here at oDesk, it to provide potential employers with my expertise in the field of website design, development, and programming. #1 and All PHP, MYSQL, POSTGRE SQL, JavaME, Javascript, C++, Java J2EE, J2SE. Tomcat, Jboss, Amazon AWS Amazon EC2 Expertise: ========= Banking Software Development Web Development and web programming Softwares Server, DB Optimization

    Groups: Twilio

    $250.00 /hr
    1,462 hours
    5.00
  7. Pavel Piatruk

    Pavel Piatruk Agency Contractor

    Linux system administrator

    Belarus - Tests: 11

    I have great experience in * Linux maintenance (RHEL, Debian, Ubuntu) * Virtualization: (Vmware, Openvz, Virtuozzo, Xen, KVM), * Cloud hosting (Amazon EC2, AWS, S3), * Networking (dhcp, DNS:powerdns/bind/named, vpn: openvpn/pptp, firewalls: iptables/ipfw, qos, proxies), * Web servers (apache, nginx, lighttpd, tomcat), * 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), * Hosting panels (Cpanel/WHM, Plesk, Directadmin). Java, J2EE, Maven, JUnit(DTDUnit, JMock, StrutsTestCase, DBUnit), apache commons, SQL (pl-sql/MySQL/ORACLE/MS SQL), HTML, JS, AJAX, CSS, Spring, Struts, Tiles, ORM/Hibernate, XML, XSLT, Jasper, Ant, JMeter

    Groups: Bluehost Developers and Designers

    Associated with: JazzTeam, NK Support

    $27.78 /hr
    1,337 hours
    4.84
  8. Roman T.

    Roman T.

    System administrator/Web optimizator

    Russia - Tests: 6 - Portfolio: 1

    Project management, magento development, magento speed optimization, mysql optimization, cacti, nginx, zabbix, openvpn, bgp, centos, debian, ubuntu, windows server 2003-2008-2012, MSSQL server, iis, asp, aws, amazon ec2, red5 installator, proxmox, mongodb, virtualization, proxmox, xenserver, openx, highload projects.

    $88.89 /hr
    1,882 hours
    4.91
  9. Jayson M.

    Jayson M.

    Webdevlopment, Data Specialist,SEO,Javascript, CentOS, Linux Admin

    Philippines - Tests: 2 - Portfolio: 3

    To obtain a challenging and responsible position of Base station subsystem engineer within the telecommunication department that facilitates learning and provides strong communication, organizational and analytical skills. I feel that my educational qualification as well as the previous work experience will definitely help me to serve better for the organization.

    $3.00 /hr
    1,591 hours
    3.62
  10. Igor S.

    Igor S.

    Linux sysadmin, cloud deployments specialist

    Czech Republic - Tests: 9 - Portfolio: 1

    I would like to offer you my deep knowledge of server 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. Unix only, Linux preferred. I am a developer of cloud monitoring & management tool M-Script, a simpler and easier to learn tool compared to alternatives, yet powerful and allowing faster cloud-based deployments including cross-cloud deployments, private clouds support, images management, cloud scripting of maintenance routines and any complex cloud automation (auto-scalability or any event/action programming). No matter how complex (or simple) your setup is, it can save you a lot of time and money and provide a seamless transition from initial proof-of-concept setup to full production infrastructure.

    $40.00 /hr
    7,230 hours
    4.88