CentOS Freelancers

Showing 425 freelancers

CentOS Freelancers

Showing 425 freelancers

  • Senior System and Network Administrator

    I'm fully working from the last 5+ years as a Linux Administrator . I'm well experienced in Linux Server administration tasks in the production and development environments - Have a good knowledge and hands on experience in Apache, Iptables, Openvpn … more

    I'm fully working from the last 5+ years as a Linux Administrator . I'm well experienced in Linux Server administration tasks in the production and development environments - Have a good knowledge and hands on experience in Apache, Iptables, Openvpn, Sendmail, Postfix, Mysql, FTP, Samba, SVN, Asterisk, Elastix, Mysql replication,Kerio Control, JIRA, Confluence, MantisBT, Redmine, Zabbix servers, Hudson, Bash scripting,ESXI Virtualization etc..  less

    linux-system-administration apache-administration mysql vmware-esx centos network-administration unix-shell zabbix redhat-administration openvpn 00 more less
    • $23.33 HOURLY RATE
    • 5.0
    • 20 HOURS
    • ARMENIA
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 6 TESTS
  • Software Engineer / Electronics Technician

    I have a broad range of experience and an avid love for programming. My focus has been on back-end systems development. Lately I've been working primarily with PERL and Ruby, but I am very familiar with several other languages … more

    I have a broad range of experience and an avid love for programming. My focus has been on back-end systems development. Lately I've been working primarily with PERL and Ruby, but I am very familiar with several other languages, such as LotusScript and JavaScript, and am quick to learn new ones. I've been using linux systems since 2000, so I am well versed with bash, sed, awk, etc.... You can see www.swajime.com for some samples of my work.  less

    ruby perl c unix-shell unix-system-administration google-sketchup ubuntu centos calculus bash-shell-scripting 00 more less
    • $35.00 HOURLY RATE
    • 5.0
    • 14 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 12 TESTS
  • Linux Server Administrator / Cloud Computing

    I have more than 8 years experience in linux. I'm already RHCSS RHCE knowledge level. I had been work as IT support engineer and vice manager for ONE year before starting my master degree. I was supporting Winserver 2008 … more

    I have more than 8 years experience in linux. I'm already RHCSS RHCE knowledge level. I had been work as IT support engineer and vice manager for ONE year before starting my master degree. I was supporting Winserver 2008 and linux servers I was tutor in University in computer science for 3 years and I have great experience dealing with teaching stuff and educational work flow My master is about cloud computing so I'm working now with cloud stack and already worked with openstack and eucalyptus. I have stable high speed 5 M line and plenty of time to work and be helpful for every body  less

    linux-system-administration arabic ubuntu centos amazon-ec2 c# security python latex 00 more less
    • $22.22 HOURLY RATE
    • 5.0
    • 54 HOURS
    • MALAYSIA
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 3 TESTS
  • RedHat and VMware Certified Administrator

    I am a VMware Certified Professional and RedHat Certified Engineer. I posses 6 years of rich and diversified IT experience which includes both VMware vSphere and Linux administration. As a Linux administrator I managed servers installed with Apache, MySQL, PHP, Exim etc.

    linux-system-administration apache-administration cpanel whm centos freebsd openvz 00 more less
    • $16.67 HOURLY RATE
    • 5.0
    • 87 HOURS
    • INDIA
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 6 TESTS
    GROUPS:
  • can't do is not an option

    - Linux maintenance/troubleshooting (RHEL, Centos, Debian), - 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), - Mail servers (exim, postfix, qmail, antispam/ antivirus: clamav/spamassassin … more

    - Linux maintenance/troubleshooting (RHEL, Centos, Debian), - 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), - Mail servers (exim, postfix, qmail, antispam/ antivirus: clamav/spamassassin/amavis, courier, dovecot), - Bulk marketing (Dkim, spf, high speed/inboxing, interspire, powermta,returnpath), - Automation (puppet, perl/shell/awk scripting), - Monitoring (nagios, zabbix,cacti), - Database Optimization,Replication (MySQL)  less

    mysql apache-administration lamp-administration postfix amazon-ec2 amazon-web-services squid nginx magento linux-system-administration performance-tuning load-balancing clustering haproxy centos 00 more less
    • $33.33 HOURLY RATE
    • 5.0
    • 97 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 1 TEST
  • Senior Systems & Network Engineer

    I have over 15 years of experience in the IT field, having worked at some of the most demanding environments as a Security expert and a Senior Unix System administrator (FreeBSD/Linux). I specialize in complex ISP based UNIX installations … more

    I have over 15 years of experience in the IT field, having worked at some of the most demanding environments as a Security expert and a Senior Unix System administrator (FreeBSD/Linux). I specialize in complex ISP based UNIX installations, corporate Mail servers, Web servers, Database servers and large ZFS based storage solutions. I have extensive knowledge in Virtualization technology. I have being involved with various type of Cloud solutions especially with OpenStack and CloudStack. I also perform installations, maintenance and troubleshooting of Network Security devices for corporate based environments. Being very familiar with Cisco ASA, FWSM and Checkpoint SecurePlatform and IPSO. Please visit my blog at http://www.aisecure.net/about for more information.  less

    freebsd security unix-system-administration vpn linux-system-administration centos rhel solaris-administration firewalls mail-server-implementation apache-administration amazon-ec2 virtualization mysql 00 more less
    • $30.00 HOURLY RATE
    • 5.0
    • 349 HOURS
    • GREECE
    • LAST ACTIVE
    • 3 PORTFOLIO ITEMS
    • 10 TESTS
  • RHEL / CentOS System Admin, AWS, WHM/Cpanel

    Handling unmanaged VPS, Dedicated Server with core console (Terminal). -Giving sites maximum Uptime. -Implementing new policy and maintain backup and backend server. -Prevent from websites hack (SQL Injection, FTP bypass, Brute force on SSH Tunnel ) -Maintain All site on Nginx … more

    Handling unmanaged VPS, Dedicated Server with core console (Terminal). -Giving sites maximum Uptime. -Implementing new policy and maintain backup and backend server. -Prevent from websites hack (SQL Injection, FTP bypass, Brute force on SSH Tunnel ) -Maintain All site on Nginx and Kloxo with limited sync time. -Manage shop cart Zencard and Magento site on servers and make server compatible . Penetration Testing: -Client side attacks - Server side attacks - Web applications vulnerability scans - Custom exploiting techniques - Social engineering  less

    linux-system-administration penetration-testing mail-server-implementation mysql dns squid security network-security apache-administration node.js subversion nginx centos iptables ssh ubuntu 00 more less
    • $8.96 HOURLY RATE
    • 5.0
    • 24 HOURS
    • INDIA
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 3 TESTS
  • Java,Android , J2EE , JSF , Asterisk, c#

    More than 4 years of experience in Java development. Frequently used tools and technologies are Eclipse , MyEclipse , JSF (icefaces, rich faces and prime faces) , Ibatis, JavaScript, Jquery , Hibernate , Postgresql (For database), MySql and many others. For OS flavors i mostly … more

    More than 4 years of experience in Java development. Frequently used tools and technologies are Eclipse , MyEclipse , JSF (icefaces, rich faces and prime faces) , Ibatis, JavaScript, Jquery , Hibernate , Postgresql (For database), MySql and many others. For OS flavors i mostly work with Linux (Ubutnu, CentOS) all Microsoft Windows platforms. I am also engaged with Asterisk for different IVR and VOIP projects along java and web integrations. I have good experience with SVNs like Bazaar and tortise. Good knowledge of large code base management. Apart from management and development of Software Projects i also teach programming at University and to some online students.  less

    android-app-development jsp asterisk j2ee linux-system-administration ubuntu centos jsf joomla adobe-photoshop photo-editing 00 more less
    • $22.22 HOURLY RATE
    • 4.7
    • 102 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 3 TESTS
  • Asterisk/Elastix/Freepbx/VoIP/Chan Dongle/Raspberry/Network specialist

    i am a VoIP specialist dealing with asterisk and voip billing based servers: freepbx elastix a2billing and Kamailio. i have collected much experience in installing and configuring VoIP servers and giving support for costumers during my last job position at … more

    i am a VoIP specialist dealing with asterisk and voip billing based servers: freepbx elastix a2billing and Kamailio. i have collected much experience in installing and configuring VoIP servers and giving support for costumers during my last job position at Voipmaroc and Nogafone. during my last jobs i was charged to deploy a voip call center based on elastix asterisk for DYARelmansour , a construction company leader in Morocco , and a call center ViciDial for EIGENVALUE based in Morocco and for many end user of IPBX appliances and customized IPbx installationsbased on asterisk. my diplomat at network engineering and Centos Linux experience helped me to devolope my skills in VOiP. i am ready to serve.  less

    asterisk elastix centos a2billing cisco-voip voip-administration automated-call-distribution freepbx sip 00 more less
    • $21.11 HOURLY RATE
    • 5.0
    • 129 HOURS
    • MOROCCO
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 4 TESTS
    ASSOCIATED WITH:
  • Expert Wordpress/PHP developer | Scripting expert

    I have lots of experience building and enhancing Wordpress plugins. My main strengths are: - Clean coding - 100% Wordpress coding standard compliant - Availability - usually respond within 5 to 10 minutes to any queries during CST workhours - Fast and top quality work … more

    I have lots of experience building and enhancing Wordpress plugins. My main strengths are: - Clean coding - 100% Wordpress coding standard compliant - Availability - usually respond within 5 to 10 minutes to any queries during CST workhours - Fast and top quality work I also have experience developing web pages using Perl and/or PHP, Javascript/jQuery, VBScript, CSS, Ajax and MySQL databases. I worked for a Fortune 500 automotive company in a reporting and analysis position, and also building and maintaining a website in the company's intranet using Perl and MySQL. After that I was in charge of supporting a website built with Java and the Spring framework, using both MySQL and Oracle databases, for customers worldwide. I also worked at the tech support helpdesk for that same company for over a year, troubleshooting Linux servers and workstations, networking and other data related issues. I was also in charge of administering KBOX ticketing system for over a year, from content management to database administration, to scripting solutions for its customers. I also have knowledge in scripting using different technologies, such as VBScript, Javascript, Linux shell scripting, Perl, and some Powershell, as well as VBA for Excel and HTAs. I was also regularly troubleshooting C and Java programs for bugs and/or enhancements. After that, I moved to a company named Softtek as a Software Engineer, I was part of a team that develops Wordpress plugins and themes for an American multinational conglomerate corporation. The last position I held was for yet another company as a Linux intermediate administrator, where I was in charge of managing users with Centrify and I also installed Cacti to monitor some of the company's servers running CentOS. Currently, I work on my own mostly developing Wordpress plugins and themes. I have specialized myself working on web development, mainly PHP with MySQL databases, but also Javascript/jQuery for the front end.  less

    wordpress php microsoft-excel perl microsoft-visual-basic jquery javascript vbscript centos web-scraping website-development java c data-scraping oracle-database mysql sap-sybase-adaptive-server-enterprise oop vba .net-framework 00 more less
    • $55.56 HOURLY RATE
    • 5.0
    • 70 HOURS
    • MEXICO
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 18 TESTS
    GROUPS:
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