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, 148 CentOS projects are completed every quarter on Upwork.

148

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: May 1, 2015
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  1. Mark Ritchie

    Mark Ritchie

    Senior Systems Admin, Network Admin

    Canada - Last active: 11/25/2014 - 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
    102 hours
    4.93
  2. Alexander C.

    Alexander C.

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

    Russia - Last active: 05/31/2014 - Tests: 2 - Portfolio: 4

    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. Rafal K.

    Rafal K.

    PHP Team Lead / Architect / Senior developer

    Poland - Last active: 12 days ago - Tests: 5

    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

    $80.00 /hr
    45 hours
    5.00
  4. Shantonu Sarker

    Shantonu Sarker

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

    Bangladesh - Last active: 24 days 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
  5. David B.

    PHP/MySQL Developer Specializing in E-Commerce Platforms

    United States - Last active: 15 hours 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
    3,233 hours
    3.91
  6. Hardik Shah

    Hardik Shah Agency Contractor

    J2EE Grails Developer

    India - Last active: 4 days ago - Tests: 2 - Portfolio: 4

    - I've total 4 years of experience in Java/J2ee technology. - Having 2+ years of experience in Groovy & Grails - Having extensive experience with tomcat server and working with CentOS - Having experience in MySQL, Oracle 10G and MongoDB databases. - Having extensive experience in Spring, Hibernate and Struts frameworks. - Having experience in sub version control like Git, SVN etc. - Having experience in Payment gateway integration like Paypal, Moneris, DirecPay, HDFC etc. - Having skill to develop web application from scratch which includes Fontend & Backend. - Having hands on experience with Frontend technologies like Jquery, Java Script, HTML 5 - Having experience in Real-Estate, Financial, Accounting, E-commerce domains. - I can develop very robust product which will work very smoothly and attract the users. - Can deploy product on any VPS, having extensive experience to work with tomcat server. - Highly involved in client interaction, requirements gathering and development of various functional documents for the systems to be developed. - Good knowledge of design patterns like Singleton, Strategy design patterns - Possess strong leadership, and excellent analytical & problem solving skills. - Ability to work in team as well as independently with minimal supervision.

    Associated with: Grails Titan IT Service

    $13.33 /hr
    86 hours
    4.23
  7. $24.44 /hr
    386 hours
    4.61
  8. Braden T. Agency Contractor

    Professional Project Manager

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

    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.

    Associated with: Braden Temme

    $31.00 /hr
    0 hours
    5.00
  9. Salvatore Cristofaro

    Salvatore Cristofaro

    Engineering - IT System Specialist - IT Security expert

    Italy - Last active: 03/10/2014 - Tests: 2 - Portfolio: 1

    Master's Degree in IT Security and Digital Forensic Certifications: - ISO/IEC 27001:2013 Leader Auditor Qualified - ISO/IEC 20000:2011 Leader Auditor Qualified - Linux Professional Essentials - Axis Certification Engineering: small/medium Data Center, software design, capacity planning PrograArchitect/Administratormming knowledge and scripting: Java, C/C++, Assembler, Bash System monitoring: Nagios, Server (Linux, Windows, *nix), IP cameras, air conditioners, UPS (soho and industrial one), power generators, air conditioners, environmental sensors Information Security Management System: open source asset management (ISO/IEC 27001:2005, ISO/IEC 20000-1), trouble ticketing, software versioning, revision control Software Service: CSM, Apache Web Server, Nagios, Tomcat Servelet, Icecast, proftpd, Hylafax, Avantfax, Asterisk, Freeswitch, ZRTP, SRTP, qmail, ssmail IT Security and plannig: Data Center design and implementation. Capacity Planning, Business Continuity, Disaster Recovery. Wireless network design (short / medium / long-range), wireless connections simulations based on terrain, VPN (OpenVPN, IPSec), Network Sniffing, penetration test , computer forensics, data encryption / decryption, IP networks design and setup. Cyber attacks Analysis (intrusion detecion, malware, virus), centralized antivirus management. ZRTP and TLS Voip. RFID / Bar code. Video Surveillance: Design and setup of video surveillance systems, with simulations based on land contours. Trashware: design and optimization of systems, LTSP Virtualization and Cloud: design and offline / live (Physical to Virtual) migration, Xen, XenServer, UML, VMware, VirtualBox, Cloud Computing Other: UPS / Electronic Generators / Air-conditioning / Machinery Location / maintenance and real time monitoring of industrial devices UPS, Generators Generators and precision air conditioners. Systems Breton FP400 and Proliner Performance: benchmark suite LMbench, optimization of systems, tuning Apache and MySQL Databases: SQL, MySQL Database Server, PostgreSQL, JDBC, MSSQL 2005/2008 Backup: Live Backup, Disaster Recovery planning and system migration Mobile: Mobile Device Management, BYOD, Android Security and Tuning. OS: GNU Linux (Gentoo / Debian / RedHat / CentOS), FreeBSD, Windows (XP, Vista, 7, Windows 2003/2008 Server), Mac OS X. Basic knowledge of Aix, OpenSolaris,

    $44.44 /hr
    0 hours
    0.00