Network & System Administrators

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  1. Daniel Guillermo Bareiro

    Daniel Guillermo Bareiro

    GNU/Linux and Unix system administrator

    Argentina - Last active: 20 hours 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
    38 hours
    4.92
  2. Jimmie Butler

    Jimmie Butler

    Meteor Developer

    United States - Last active: 20 hours ago - Tests: 2 - Portfolio: 3

    I develop Meteor applications for web and mobile and have released several packages to atmosphere. Meteor's current ecosystem and technology stack is extremely good at the moment and will only continue to improve, making it the best option for building high quality user experiences for multiple platforms at this time. Currently I'm working with a start-up focused on providing analytic and student feedback to school lunch providers, but I am available.

    $50.00 /hr
    374 hours
    4.86
  3. 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
  4. Dmitry Gorlov

    Dmitry Gorlov

    Linux Admin / Oracle certified professional

    Russia - Last active: 20 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
    392 hours
    5.00
  5. 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
  6. Alex Omyshev

    Alex Omyshev

    Python/Django/Javascript Web Developer/System Administrator

    Ukraine - Last active: 12/14/2014 - Tests: 12 - Portfolio: 1

    5+ years experience as a Python developer and System Administrator. Languages/Technologies: Python, Javascript, jQuery, AJAX, HTML5, CSS3, C Web servers/frameworks: Apache, Nginx, Tornado, Django; Advanced in database administration tasks including an installation, configuration, performance tuning: PostgreSQL, MySQL, Percona, MSSQL, SQLite. Replication configuration; Strong experience of writing SQL queries of varying complexity; Writing a different scripts on python such as: automation some actions on servers, tests, backup systems, web - server behavior analyzer, log parser, etc.); Working with version control systems such as: Subversion, Git; Administering servers running with both OS Linux/Unix and Windows.

    $16.67 /hr
    7 hours
    4.96
  7. Ognjen S.

    Ognjen S.

    Ognjen Simisic

    Bosnia and Herzegovina - Last active: 17 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
  8. Stepan Birukov

    Stepan Birukov

    Linux system administrator with experience in networking

    Ukraine - Last active: 16 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