IT & Networking Administrators

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  1. Daniel Guillermo Bareiro

    Daniel Guillermo Bareiro

    GNU/Linux and Unix system administrator

    Argentina - Last active: 18 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. Ofir Vaknin

    Ofir Vaknin

    Business & Data Analyst (Data Storyteller)

    Israel - Last active: 18 hours ago - Tests: 1

    Areas of Expertise * Collecting, controlling and analyzing complex data sets, in support of senior management and internal customers. * Developing, maintaining databases and corresponding Dashboards. * KPI development, implementation and controlling. * Performing process analysis in liaison with end-users. * Design, develop and implement share point based systems Excellent proficiency in: data analysis, data visualization, data mining, systems analysis, process design, database design and implantation, data warehousing systems, training development. BA Management & Logistics - Bar Ilan University, Israel

    $40.00 /hr
    779 hours
    5.00
  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: 18 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. Himanshu Bhattacharya

    Himanshu Bhattacharya

    Take pride in my work

    India - Last active: 18 hours ago - Portfolio: 3

    Dedication, speed and honesty . These words have defined me. Secured position in top 1% developers club in elance. I am a software engineer , who is doing dedicated work in this field from last 4+ years.

    $16.67 /hr
    455 hours
    4.80
  6. 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
  7. 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