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On average, 131 CentOS projects are completed every quarter on Upwork.

131

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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. Denis C.

    Denis C.

    Expert System Engineer

    Moldova - Tests: 9

    PROFILE – A self-motivated and committed system administrator with exposure to a wide range of technical areas, focused on delivering best experience to the end-users – Nine years of experience in administering business–critical application stacks such as banking software, middle-ware, billing systems, Telecom-specific applications; troubleshooting complex issues, managing both production environments and databases of highly respected companies – Performed upgrades planning, software developing and documenting the knowledge – Highly adaptable and quick to learn new skills – Six years of customer service experience MAIN TECHNICAL SKILLS O/S: HP-UX, SunOS, AIX, RedHat, CentOS, Debian – installation/configuration Software: MySql Server – installation/configuration Apache Web Server – installation/configuration Nginx – installation/configuration Apache Tomcat – installation/configuration Redhat JBoss Application Server – maintenance Oracle WebLogic Application Server – maintenance Oracle Tuxedo – maintenance Oracle Database – maintenance CVS – codebase maintenance HP Quality Centre – configuration/maintenance SSH Server – installation/configuration Telecom–specific Billing Applications (Amdocs Ensemble, Oracle BRM) – maintenance Oracle VM VirtualBox – installation/configuration Languages: Python – 1.5 years Perl – 3 years AWK – 4 years Shell Scripting – 5 years SQL (mysql and Oracle) – 4 years Java – 0.5 years PROFESSIONAL EXPERIENCE – Billing System Engineer, Team Lead (3 persons in submission): 2010 - 2013 – Software Developer: 2008 – 2010 – Senior System Engineer: 2003 – 2008

    $16.67 /hr
    0 hours
    0.00
  3. Donovan F.

    Donovan F.

    Cloud Engineer and Linux Expert

    South Africa

    I am an accomplished Systems Administrator with over 13 years professional experience building infrastructure and platforms for small web hosts, the enterprise data center and the cloud. My primary specialties are Linux systems, open source software, and cloud platforms. I began my career integrating Linux systems and varies opensource technologies for Internet Service Providers and Telecommunications providers. I realized that integrating programming/scripting into my skill set would automate and provide easy of implementation to many of my projects. Here is a brief sampling of skills and technologies I am currently (2015) working with: Linux - RHEL, CentOS, Ubuntu, and FreeBSD Datastores - MySQL, PostgreSQL, Memcached, Redis, MongoDB Monitoring - Nagios, Munin, Cacti, Shinken Management - Chef, Puppet Platforms - AWS, Rackspace, OpenStack Frameworks - Rails Lanaguages - Ruby, Python, Perl, PHP SCM - Git, SVN

    $27.78 /hr
    6 hours
    0.00
  4. Panayotis Tsiamis

    Panayotis Tsiamis

    Senior Systems and Software Engineer

    Greece - Tests: 7 - Portfolio: 14

    Systems and Services Engineer, with 12+ years of working experience. Interested in researching, administrating, debugging, tuning and developing platforms running on UNIX like Operating Systems. Able to troubleshoot, identify and solve problems in software, network or kernel layer. Always willing to learn and experiment new technologies for creating high availliability platforms, that could described as "state of the art" or "cutting edge" technology. Specialties: • Unix Like Operating Systems Specialist (Solaris / Linux ). • TCP/IP Network technology • Very deep level of knowledge on Machines hardware and OS Kernels internals. • Troubleshoot/Tune/Debug; System Services, Operating Systems • Mail Services Expert, Qmail-Ldap Specialist. • Network: Cacti/MRTG, Nagios, Cisco Netflow • Databases: PostgreSQL / MySQL / Oracle / LDAP. • Programming: Perl, Ansi C, bash, awk, sed, php etc • Internet Services: mail, http, radius, ftp, ssh, irc etc.

    $30.00 /hr
    441 hours
    0.00
  5. Muhammet Berdimyradov

    Muhammet Berdimyradov

    Systems and Storage Administrator

    Turkmenistan - Tests: 2

    My primary job - management of data-center infrastructure of mid-sized service provider. I operate a farm of the Sun/Oracle/HP/HDS servers, storage systems and Brocade SAN, work with a stack of the Solaris/Linux/Windows operating systems, implement vmWare vSphere virtualization solutions in production. Here at Odesk I plan to expand my knowledge base and get an additional experience in Linux/Unix operating systems and also in programming.

    $10.00 /hr
    0 hours
    0.00
  6. Max Topal

    Max Topal

    VoIP/Network/Linux Engineer

    Russia - Tests: 3

    Over 8 years hands-on experience. I have deep knowledge on VoIP Hardware and softswitches from open-source one (Asterisk, Elastix, Askozia, Freepbx, CallBox, Trixbox, Welltime, Yeastar) to licensed (Switchvox, Panasonic, Mera, RTU) . I am providing Asterisk-based PBX installation\integration, support, troubleshooting and consultations. Fully manage the installation, configuration and troubleshooting of Linux servers * Install and configure Web Servers and MySQL, PostgreSQL * Install and configure customer scripts and programs * Monitor performance to identify and resolve issues using a suite of systems and tools. * Provide VoIP Security * Troubleshoot and resolve network, system, hardware and software problems. * Achieve quick fixes and / or long-term solutions as needed. I have more than 100 successful IP-PBX server deployments, so I am confident that you will be satisfied with my work completely.

    $20.00 /hr
    0 hours
    0.00
  7. Joshua Andre Basarte

    Joshua Andre Basarte

    Software Developer

    Philippines - Tests: 2

    A software developer with certifications in Java SE and Agile Development, among other things, I have worked in the telecommunications industry since 2009. Creating backend applications, mainly in Java and PHP, writing scripts for stats collection and application suite health, as well as Database design are some of roles that I have taken on in my career. I also have had some experience creating proof-of-concept Mobile applications in iOS and Android, as well as researching and testing new applications as possible solutions to different problems. I look forward to facing new challenges, strengthen my skills and add new ones along the way, and hopefully create a products that are awesome and useful to the world.

    $18.00 /hr
    3 hours
    0.00
  8. Oleg Dukh

    Oleg Dukh

    System Administrator/IT Engineer

    Ukraine - Tests: 1 - Portfolio: 5

    Experience: OnApp L3 Support Engineer June 2013 – Present (1 year 9 months)Ukraine Provide 3rd line technical support to customers. Analyze and clarify customer queries though troubleshooting and researching existing knowledgebase articles/known issues. Diagnose the root cause of customer technical issues and resolve wherever possible in real time Setting up and configuring OnApp Clouds(Control Panels,Hypervisors,BackUp Servers,DataStores,CDN,Virtual Servers etc). Webmaster(Part-time) Freelancer January 2009 – Present (6 years 2 months)Lviv Worked in various number of web based Projects using Joomla, Wordpress, HTML, CSS, JavaScript etc. Template Customization depending on the clients' website requirements Websites deployment using open source toolset (PHP, MySQL, Apache, Linux and others (i.e LAMP), Debugging of code written by other developers. Search engine Optimization included creating unique title tags, meta tags (descriptions and keywords), internal navigation (footer text links, content links), and optimization of content. Ericpol Computer Systems Engineer September 2012 – May 2013 (9 months)Lviv Monitoring and updating Tickets (issues) through Incident management system based on ITIL Process; Configuration, operation and maintenance of telecommunication and Ethernet equipment; Maintaining information security in the organization; Configured and Administrate Linux servers and Desktops; Installing and configuring new hardware and software; Maintenance of office equipment; Identify and troubleshoot workstations, and more; Ukrainian Catholic University Engineer of IT Departament January 2008 – September 2012 (4 years 9 months)Ukraine Configured, installed, and troubleshoot desktop computers, peripherals, including installing and configuring the OS, internal components, peripherals and software; Diagnosed and resolved hardware, software, and network connectivity problems; Provided technical assistance for troubleshooting and configuration needs;

    $12.00 /hr
    0 hours
    0.00
  9. Deibys Paredes

    Deibys Paredes

    Linux Systema Administrator

    Panama

    I am a professional organized, efficient, dependable, who has worked in several IT fields for over 10 years. With experience as a Linux System Administrator, Linux Network Administrator, migrations planning and many other functions. I can bring value to your business and help solve issues. I have strong knowledge in Web server (Apache, Lighttpd, Nginx, PHP, Perl, Python..), Monitoring (Cacti, Nagios, Zabbix), Mail server (Sendmail, Qmail, Postfix, Zimbra...), DNS (Bind, Power DNS...), Firewall, Network, Database (MySQL, noSQL: couchbase...), load balancing (HaProxy, LVS..), Virtualization (VMware vSphere, XEN, Proxmox, Citrix...). However, my knowledge is not limited in these areas.

    $17.00 /hr
    0 hours
    0.00
  10. Asfer Saleh

    Asfer Saleh

    Windows & Linux, Network, Database & VOIP Administrator

    Bangladesh - Tests: 4

    Expert in Server/PC/Notebook/Netbook/VPS running Microsoft Windows Server 2000/2003/2008/2012, MS-DOS, Notepad, WordPad, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Access, Microsoft FrontPage, Microsoft Outlook, Outlook Express (All versions), Windows Mail, MYSQL/MSSQL Server, Web designing, 3CX/Grand Stream, CISCO VOIP Server, IP Phone, MRTG/Whatsup etc Monitoring Tool, HDD physical & logical bad sector repair, Partition Convertion and resizing, O/S Restoration/Recovery , Bootable OS CD/DVD-Writing, Making a pen drive bootable, Data Backup and restore, Data recovery, Logical Volume Cloning, Basic and fail-safe virus check with Antivirus with latest update, System devices Diagnosis, Network Administration Internet Gateway Server, Email (POP3, IMAP, SMTP) Server, Website Server, NAT Server, RIS Server, Terminal Server, Remote Access Server, Print Server, File Server, Microsoft Exchange Server, PXE Server for PXE boot ROM client, WIFI Router, WIFI Access point, Managed/Unmanaged switch, DHCP Server, WINS Server, DNS Server, Domain Controller Server etc.], Software application Installing, configuring, administering and troubleshooting using Linux, Solaris and all versions of Microsoft's operating systems all other built-in administrative tools with any Microsoft operating system for large or small medium enterprise organizations.

    $11.11 /hr
    0 hours
    0.00