Network & System Administrators

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  1. Daniel Guillermo Bareiro

    Daniel Guillermo Bareiro

    GNU/Linux and Unix system administrator

    Argentina - Last active: 1 day ago - Tests: 2 - Portfolio: 2

    I manage and use free/open source software and GNU/Linux (most experienced Debian) since 2000. I have also participated in numerous conventions related to these themes (some of them as speaker) and collaborating with the discovery of bugs in applications for contribute with the community. Specialties: Networks and operating systems security, monitoring technologies. Advanced knowledge of GNU/Linux environments and virtualization platforms. LANs, WANs, VPNs, Firewalls, TCP/IP. Description of services: ---------------------------------- Servers: ====== Installations, configurations and maintenance plans for servers running GNU/Linux or free BSD operating systems range. * Planning, installation and configuration of GNU/Linux systems as both free and open source systems. * Installation, configuration and maintenance of servers of BSD range: FreeBSD and OpenBSD. * Print servers. * Mail servers with spam and virus filters. * Proxy servers. * Fax servers. * Corporate instant messaging servers. * Install and configure DNS servers. Procedures for domain management. * Management servers for uninterruptible power supplies. * Web servers (Apache, PHP, MySQL and PostgreSQL). * Database servers (MySQL and PostgreSQL). * DHCP servers. Networks and Infrastructure: ===================== Installation, maintenance and failure analysis of networks. High-availability systems, mass storage, remote backup, and monitoring equipment and services. * Installation and maintenance. * Firewalls. * VPNs. * DMZs. * RAID, SAN and NAS systems. * Implementation of VoIP telephony systems. * Virtualization systems (for production systems, development and testing). * Remote backup systems. * Monitoring systems. * Control, preventive analysis and resolution of faults in networks. * Installing and configuring high availability clusters. Consultancy: ========== My main goal is to provide a work environment based on trust, integrity and transparency, in order to become your strategic partner to help you realize your projects. My experience in the field of free/open source technologies allows me to offer a wide range of consulting services for your business, which include audit and analysis of systems, applications and networks, migration to free and open source systems, and systems integration, among others. * Migrating to free and open source systems. * Network analysis. * Security analysis. * Configuring applications. * Systems integration.

    $36.67 /hr
    34 hours
    4.92
  2. Vasily S.

    Vasily S.

    Project Manager with development and system administration skills

    Russia - Last active: 12/11/2010 - Tests: 4 - Portfolio: 3

    I'm IT geek and from 2004 I developed a huge amount of various software products and services. Most of all I'm experienced in Product and Project Management, Ruby and Ruby on Rails development and Linux administration. If you need a man to solve tough technical or architectural problems you are welcome.

    $50.00 /hr
    14 hours
    5.00
  3. Dmitry Gorlov

    Dmitry Gorlov

    Linux Admin / Oracle certified professional

    Russia - Last active: 16 hours ago - Tests: 11 - Portfolio: 1

    Under construction... I start my IT career since 1992 using FoxBase by IBM-compatible 286AT computer. Today my phone have more powerfull CPU :-) In Linux from 1997, begun from Redhat 6.0 In Oracle from 2003, begun from 8.1.7 10g OCP Certified in 2007. Microsoft MCP in 2007. http://krasitel.blogspot.com

    $20.00 /hr
    390 hours
    5.00
  4. Lukas Kocourek

    Lukas Kocourek

    senior IT professional

    Czech Republic - Last active: 12/04/2014 - Tests: 4 - Portfolio: 1

    major skills: ‣ network TCP/IP (IPv4, IPv6), routing, firewall, VPN, monitoring systems ‣ VMware (architecture, management & deployment) ‣ UNIX operating systems (Debian, Ubuntu, RHEL, CentOS, OS X) ‣ Apache, Nginx, Tomcat, Icecast, BIND, Zabbix, Nagios ‣ SQL technology (MySQL, MS SQL) ‣ clustering, HA ‣ programming languages PHP, JavaScript (Node.js), Perl, BASH ‣ HTML, CSS, Adobe Photoshop ‣ VCS systems (GIT, CVS) ‣ SAN EMC CX/VNX class management

    $25.00 /hr
    0 hours
    5.00
  5. Stepan Birukov

    Stepan Birukov

    Linux system administrator with experience in networking

    Ukraine - Last active: 15 days ago - Tests: 5

    Since 2013, I have been working as Network engineer and Unix system administrator for ISP. I have experience in support business-critical applications and hardware, configuration of network equipment and Unix-based servers, bottlenecks search in high-load Unix systems.

    $15.00 /hr
    0 hours
    4.68
  6. Ognjen S.

    Ognjen S.

    Ognjen Simisic

    Bosnia and Herzegovina - Last active: 16 days ago - Tests: 5 - Portfolio: 4

    An IT expert with more than 10 years of experience specialized in network and system administration, MS SQL databse administration, CCNA certified. Working on implementing IT in a small SOHO companies through international banks and government institutions. A team player who has excellent interpersonal and communication skills.

    Groups: Microsoft Certified Professionals

    $11.11 /hr
    2 hours
    5.00
  7. Christopher Jinks

    Christopher Jinks

    Advanced 1st & 2nd Line systems analyst

    United Kingdom - Last active: 8 days ago - Tests: 2

    I can provide 1st and 2nd line systems support to an outstanding standard with impeccable customer service. These include, but are not limited to; -Software -Hardware -Networking -Operating systems -Virtualisation -Thin Client -Microsoft Office packages -Password retrieval -Scripting

    $8.33 /hr
    8 hours
    5.00