Linux System Administration Freelancers

Showing 4,849 freelancers

Linux System Administration Freelancers

Showing 4,849 freelancers

  • Linux Expert and Devops.

    My only goal is Customer satisfaction.. If you need to get something done.. leave it to me. Have 6years of rich experience in VMware vSphere services on platforms such as Blade infrastructure, Virtual Computing Environment (VCE), Cisco UCS , VMware Cloud … more

    My only goal is Customer satisfaction.. If you need to get something done.. leave it to me. Have 6years of rich experience in VMware vSphere services on platforms such as Blade infrastructure, Virtual Computing Environment (VCE), Cisco UCS , VMware Cloud and Linux. Have a sound knowledge on AWS, Rackspace, Openstack, DigitalOcean cloud hosting. OS: Linux - expert, FreeBSD , Solaris and Windows Server - proficient Cloud services: AWS, Rackspace, DigitalOcean SCM: Puppet, Chef Web servers: Apache, Nginx, Tomcat Database servers: Mysql, Postgresql, MSSql Atlassian: Jira, Confluence, Crowd, etc - the whole suite Monitoring: Nagios, Groundwork, Zabbix, Monit, Munin, Cacti Virtualization: Openvz, Vmware esxi/server, openstack, xen server Mail servers: Zimbra, Exim, Sendmail, Dovecot, Postfix, Google Apps and O360 Backups: Bacula, Avamar High availability: Corosync/Pacemaker, DRBD Other: standard network services (DNS, DHCP, LDAP, Samba, SVN/Git, http proxy, jabber, VPN, backups, monitoring etc), firewalls and routers (iptables, iproute, VLAN, bridging, bonding).  less

    linux-system-administration mail-server-implementation virtualization apache-tomcat apache-administration kvm-virtualization nagios zimbra-administration exim amazon-web-services 00 more less
    • $20.00 HOURLY RATE
    • NO FEEDBACK GIVEN
    • 0 HOURS
    • INDIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 6 TESTS
  • Engineer Diego Juliao

    About 2009 I started to create different desktop applications in many programming languages like C++, mostly JAVA and C#, linking it with Database managers like Oracle, MySQL and PostgreSQL. Also creating communications with other applications; in many cases making distributed … more

    About 2009 I started to create different desktop applications in many programming languages like C++, mostly JAVA and C#, linking it with Database managers like Oracle, MySQL and PostgreSQL. Also creating communications with other applications; in many cases making distributed operations. Since 2010 I have developed websites using HTML, CSS, jQuery, PHP and linking it with database managers. I dabbled in the area of ​​creating games employing Unreal Development Kit, XNA framework and Slick java framework. I find it interesting automate processes in bash code. Actually i am inverting time, money and effort in acquire skills and knowledge in the area of networking. I have three levels of Cisco Certificate Network Associate (CCNA). I investigate independently in the areas of administration of networks, network security and configuration of hardware  less

    java c# network-planning computer-networking cisco-ios cisco-routers c++ html jquery linux-system-administration 00 more less
    • $5.56 HOURLY RATE
    • NO FEEDBACK GIVEN
    • 0 HOURS
    • VENEZUELA
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 2 TESTS
  • Network / Security Engineer

    As a Network / Systems Engineer for the past 9 years, I can help troubleshoot most network issues on WAN / LAN with almost any network device vendor, administer Windows and Linux server environments from one small business office to large enterprises … more

    As a Network / Systems Engineer for the past 9 years, I can help troubleshoot most network issues on WAN / LAN with almost any network device vendor, administer Windows and Linux server environments from one small business office to large enterprises with multiple locations. As a security specialist in standards like Cisco ASA, CheckPoint, Juniper SRX series, I can also help recommend and provide guidance to secure all aspects of data and network integrity, by providing assessments and audits of current environments. I also have excellent trouble isolation and resolution skills from a long history of working in the field, especially system and network engineering and administration. I look forward to helping you by using these skill sets to overcome any server or network task you should post.  less

    network-administration computer-networking network-planning network-security wireless-network-implementation linux-system-administration apache-administration windows-administration wireless-security cisco-asa 00 more less
    • $4.44 HOURLY RATE
    • NO FEEDBACK GIVEN
    • 0 HOURS
    • BANGLADESH
    • LAST ACTIVE
    • 3 PORTFOLIO ITEMS
    • 4 TESTS
  • Microsoft System Engineer/Virtualisation Specialist / Cloud Evangelist

    Over the past 6+ years in the field of Systems Infrastructure & Networking, I have worked in Telecom and banking industry, with qualifications of Bachelors as well as Masters of Computer Science. Following my research into your company, there appears to … more

    Over the past 6+ years in the field of Systems Infrastructure & Networking, I have worked in Telecom and banking industry, with qualifications of Bachelors as well as Masters of Computer Science. Following my research into your company, there appears to be considerable synergy between your requirements for success and my achievements. I have successfully migrated 130 branches of Faysal Bank to Centralized Windows Active Directory domain via Active Directory Migration Tool (ADMT) v3.1 resulting in decreased backup cost and reduction in domain administrators. I also successfully consolidate 31 high available PTCL Services from obsolete hardware to virtualized platform resulting in USD10k as CapEx, 3-1 System admin as OpEx and USD 26k as reduced Business loss due to downtime. I have a distinction of Implementing VMware Servers Virtualization solution on IBM Blade Centre HS22 in Faysal Bank Ltd which resulted in significant decrease of OpEx.  less

    linux-system-administration windows-administration virtualization microsoft-exchange-server microsoft-sccm vmware-esx nginx lighttpd zabbix 00 more less
    • $5.56 HOURLY RATE
    • NO FEEDBACK GIVEN
    • 0 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 3 TESTS
  • Redhat,Centos,Ubuntu,Debian, Linux, JBoss,MySQL,DNS expert.

    I am an Redhat Certified Linux System Engineer with more than 6 years of RICH EXPERIENCE. I can pretty much do any system admin tasks as long the OS is Linux (RedHat Systems like Fedora or CentOS and Debian systems … more

    I am an Redhat Certified Linux System Engineer with more than 6 years of RICH EXPERIENCE. I can pretty much do any system admin tasks as long the OS is Linux (RedHat Systems like Fedora or CentOS and Debian systems like Ubuntu). I'm particularly good with Apache, MySQL, MySQL Replication, JBoss and DNS: I can harden/prep/optimize/install various servers in your Linux machine. I can fix almost any issues with your Apache, DNS, FTP, SFTP or MySQL/PostgreSQL server. I can setup replication for your MySQL or PostgreSQL server or fix any issues you are facing with the current replication or clustering setup. I can set up a fully function LAMP server for you. I can provide your Jboss with an Apache front-end and troubleshoot any related issues. I can set up a very efficient monitoring system for your environment using Nagios or Sitescope. I can write shell scripts for you. I can help you fix things with your web control panel such cPanel, Plesk or Kloxo. Basically, I have enough experience to fix, manage or setup your production environment (As long as they are running Linux). Thank you.  less

    jboss mysql linux-system-administration nagios unix-system-administration postgresql centos dns 00 more less
    • $10.00 HOURLY RATE
    • NO FEEDBACK GIVEN
    • 0 HOURS
    • INDIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 5 TESTS
  • Network System Administrator

    1.Install all new hardware, systems, and software for networks. 2.Install, configure, maintain network services, equipment and devices. 3.Supports administration of servers and server clusters. 4.Manages all system back-up and restore protocol. 5.Plans and supports network … more

    1.Install all new hardware, systems, and software for networks. 2.Install, configure, maintain network services, equipment and devices. 3.Supports administration of servers and server clusters. 4.Manages all system back-up and restore protocol. 5.Plans and supports network and computing infrastructure. 6.Perform troubleshooting analysis of servers, workstations and associated systems. 7.Documents network problems and resolution for future reference. 8.Monitors system performance and implements performance tuning. 9.Manage user accounts, permissions, email, anti-virus, anti-spam. 10.Good knowledge of networking essentials. 11.Oversee software and network security. 12.Strong analytical abilities and professional office experience  less

    windows-administration linux-system-administration cisco-routers ubuntu apache-tomcat network-administration customer-service exim samba nfs-administration 00 more less
    • $5.56 HOURLY RATE
    • NO FEEDBACK GIVEN
    • 0 HOURS
    • INDIA
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 5 TESTS
  • Linux System Administrator

    Bare-metal provisioning with Cobbler & Orchestra Security hardening with custom firewall rules Identifying performance bottleneck and fine tuning 24/7 end user support via Tickets & Live Chats Migrating assistance users from third party providers Assisting users in configuring & troubleshooting applications like … more

    Bare-metal provisioning with Cobbler & Orchestra Security hardening with custom firewall rules Identifying performance bottleneck and fine tuning 24/7 end user support via Tickets & Live Chats Migrating assistance users from third party providers Assisting users in configuring & troubleshooting applications like Magento, Wordpress, Joomla, SMF, SugarCRM ..etc Monitoring the servers using third-party tools like Nagios, Zabbix, Logwatch, SIM & taking proactive measures when an issue arise. Automation of repeated tasks using Bash & Perl scripting Provisioning Internal Servers using MaaS, Cobbler Deploying applications using Puppet & Juju Maintaining backup of production servers using r1soft & Duplicity Documenting everything and maintaining Internal knowledge Base On call administration  less

    linux-system-administration perl lamp-administration cpanel apache-administration dns exim openvz database-administration eucalyptus-cloud 00 more less
    • $13.33 HOURLY RATE
    • NO FEEDBACK GIVEN
    • 0 HOURS
    • INDIA
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 3 TESTS
  • DevOps, Software Engineer, Linux Systems Engineer & AWS/EC2 Expert

    My goal is customer satisfaction. If you need to get something done - leave it to me. I'm self-motivated systems engineer with over 8+ years of experience in Unix/Linux systems administration. Strong troubleshooting skills and business acumen. Enjoy designing … more

    My goal is customer satisfaction. If you need to get something done - leave it to me. I'm self-motivated systems engineer with over 8+ years of experience in Unix/Linux systems administration. Strong troubleshooting skills and business acumen. Enjoy designing fault tolerant and highly available services. Team player - Participated in multiple projects, joining large teams, effectively co-working with other professionals. Effective leader - Took over leadership and managed team resources to achieve goals meeting deadlines. I provide remote, high-quality Linux systems administration services. I have extensive experience with Amazon's cloud platform and have helped dozens of clients migrate their web sites and applications into the cloud. Available for on-demand support as well as on-going maintenance and monitoring contracts. I also provide development services. I have a wide range of experience on any languages that clients required. This allows me to be flexible on understanding and providing support on combos of both system and application level. * AWS management and automation/scripting * AWS CloudFormation * AWS Load-balance and Auto-scaling * AWS RDS * AWS Beanstalk * AWS OpsWorks * Chef * Puppet * CFEngine * Atlassians [Jira, Bamboo, Confluence, Bitbucket, HipChat, ...] * Network/System/Server Administrator (Linux/BSD/Windows) * Call Center Solutions (asterisk, vicidial, goautodial) * shell Scripting (powershell, bash, etc...) * Systems Security * .NET development (C#/VB) * Web development * Drupal * CakePHP * Wordpress * Continuous Translation (weblate[django]) * Bulk Marketing (ActiveCampaign, PHPList, Sendy) * RubyOnRails (Redmine, Discourse[emberjs]) * CRM (SugarCRM, CiviCRM) * QA * Office Management * etc...  less

    amazon-web-services redhat-administration apache-administration linux-system-administration c++ drupal php redmine lamp-administration internet-marketing 00 more less
    • $13.33 HOURLY RATE
    • NO FEEDBACK GIVEN
    • 0 HOURS
    • PHILIPPINES
    • LAST ACTIVE
    • 7 PORTFOLIO ITEMS
    • 15 TESTS
  • Web & Mobile Developer

    I am an albanian Web Developer, Web application Programmer. I especially work with PHP and PHP Codeigniter framework. Creation of custom applications and websites working with: Frameworks: PHP frameworks (Codeigniter, QCubed etc...) JavaScript frameworks (JQuery, JQuery UI, JQuery Mobile etc … more

    I am an albanian Web Developer, Web application Programmer. I especially work with PHP and PHP Codeigniter framework. Creation of custom applications and websites working with: Frameworks: PHP frameworks (Codeigniter, QCubed etc...) JavaScript frameworks (JQuery, JQuery UI, JQuery Mobile etc...) Database connections: MySQL, MongoDB Web services: XML Services, RSS, facebook, twitter, Amazon Services, Zencoder, etc... Payment Systems: PayPal, Stripe etc... Search Engines: Sphinx, Lucene, Apache Solr CMS: Joomla, WordPress Designing tools: Photoshop, CSS, Flash Mobile: Phonegap Technology GIS: Google Maps Api Developing new technologies such as creation of Facebook applications, cell phone applications, web services. Other Languages: C++, Python Business Consulting.  less

    codeigniter php mysql jquery html javascript linux-system-administration phonegap paypal-api c++ 00 more less
    • $30.00 HOURLY RATE
    • NO FEEDBACK GIVEN
    • 0 HOURS
    • ALBANIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 0 TESTS
  • PowerMTA Administrator

    Have administration experience on linux servers and mtas. Have been managing PowerMTA servers since 2008,have deep experience on managing pmta. Achieved sending 150K emails in a minute,1 billion emails in a month to inbox! Currently sending more than … more

    Have administration experience on linux servers and mtas. Have been managing PowerMTA servers since 2008,have deep experience on managing pmta. Achieved sending 150K emails in a minute,1 billion emails in a month to inbox! Currently sending more than 300 million emails in a month to inbox! Deliverability experience on mainly Hotmail,Yahoo and Gmail. Currently open to exciting offers and projects. Specialties System Administrator PowerMTA Administrator Email Deliverability Specialist  less

    linux-system-administration cpanel whm windows-administration centos smtp email-deliverability-consulting email-technical-support email-handling 00 more less
    • $33.33 HOURLY RATE
    • NO FEEDBACK GIVEN
    • 0 HOURS
    • TURKEY
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 2 TESTS
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