IT & Networking Administrators

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  1. Andriy M.

    Andriy M.

    Web Developer / Programmer / Wikipedia expert

    Ukraine - Last active: less than one minute ago - Portfolio: 8

    I'm a programmer and Wikipedia expert. I create websites and develop software with Python/PHP/C. In love with sophisticated algorithms and problem solving. I have a degree in computer science (with emphasis on applied math), and I successfully completed one year of masters program in economics. I edit Wikipedia in my spare time as a long-standing hobby (10+ years), but I do paid consulting and article writing as well. Will be glad to help with your issues on this! Graphic design tasks can be done by my good friend. And he is great!

    $15.00 /hr
    1,029 hours
    4.94
  2. 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
  3. Alexey K.

    Alexey K.

    C# | ASP.NET |ASP.NET MVC | Umbraco Expert

    Ukraine - Last active: 1 day ago - Portfolio: 7

    I am ASP.NET/C# expert, rated in the Top 1% for .NET/C# skills, with 12 years experience in C#. I have more than 30 projects delivered on time and on budget. I have 18 years of experience in IT in big and small companies. I'm able to work effectively even with minimum supervision and guidance. I perform equally well as large projects in a team, as well as small projects independently. My favorite technologies are C# ASP.NET and Win Forms (web-based and desktop applications) and VoIP. I have more than 8 years experience in VoIP. I'm a citizen of Russian Federation

    $18.00 /hr
    509 hours
    4.97
  4. Andrey G.

    Andrey G.

    Experienced PHP developer, Web architect

    Ukraine - Last active: 1 day ago - Tests: 9 - Portfolio: 4

    • Backend PHP development – OOP paradigm, MVC model • Website architecture design - setup shared or VPS hostings, integration with Amazon Web Services • Linux administration – assured experience with Ubuntu: Apache, Nginx, MySQL, Redis – performance and security configuration • Frontend development – good experience with HTML, CSS, JS

    $25.00 /hr
    9 hours
    4.99
  5. Max Khlystov

    Max Khlystov Agency Contractor

    Full-Stack Developer

    Russia - Last active: 1 day ago - Tests: 2 - Portfolio: 10

    Professional area: Project Management, Startups, ERP, IT Security, Banking Software, CRM Systems, Web Engineer, Software Development, API Development, Dev/Ops, High performance and High availability services. Key skills: - Python (Django, Flask) - Java (Spring, Play, Hibernate, Android) - PHP (Laravel 3-5, YII 1-2, CodeIgniter, Zend 1-2, Symfony, CakePHP) - JavaScript (jQuery, AngularJS, NodeJS, Backbone.js, Ajax) - Ruby (Rails 3-4, Sinatra) - SQL / NoSQL (Cassandra, Redis, Mongodb, MySQL, PostgreSQL) - C/C++ (Qt, Android NDK) Glad to join large, long-term projects. Always open to learn and start using new language / technology / API.

    Associated with: Techies

    $22.22 /hr
    1,013 hours
    4.87
  6. Syed M.

    Syed M.

    Java EE Developer

    India - Last active: 03/28/2012 - Tests: 2

    I have seven years of experience working as a Software Engineer and System Administrator in the United States. During this time, I have played a leading role in every aspect of the software development lifecycle, from requirements gathering and design to deployment and maintenance. I have developed both desktop and web applications. I am also a Sun Certified Java Programmer and OMG-Certified UML Specialist.

    $33.33 /hr
    588 hours
    5.00
  7. Murugeshwari S

    Murugeshwari S

    Senior Tester, Expert in Functional and Performance

    India - Last active: 2 months ago - Tests: 1

    Overall 7 years of experience in Information Technology; Software Testing. Good understanding in Agile methodology with good experience in Scrum Master. Have good Process knowledge in SDLC/TLC models Worked extensively on Customer Escalations, Test Execution status and Defect Status Tracking.Well experienced in Manual and Performance testing also have exposure to Automation testing (Silk Automation) Good knowledge in AR client, Remedy QM applications, TestDirector, Testlink, Fogbugz and Jira. Preparing Test Strategy document, Performance strategy document, Test scenarios, Test conditions, Risk Assessment documents Involved in Performance Testing, System Testing, Integration Testing, Regression Testing, Compatibility Testing, Sanity Testing, Upgrade Testing, Worked closely with support on critical customer issues Microsoft certified in .Net, ISTQB Certified.

    $12.00 /hr
    756 hours
    5.00
  8. Serhiy T.

    Serhiy T.

    Linux, FreeBSD, Windows, Network, Apache, MySQL System Administrator

    Ukraine - Last active: 03/05/2012 - Tests: 12 - Portfolio: 1

    - Operating systems: FreeBSD, openSUSE, Red Hat, CentOS, Debian, Ubuntu, Gentoo, Windows: 2000/2003/XP/Vista/7, Mac OS X: 10.4-10.6 - Programming languages (basic level): Bash, PHP, Perl, SQL, C, Objective C, html - Network protocols: TCP, UDP - Network services: DNS, FTP, HTTP, HTTPS - Web Servers: Apache, Nginx, Tomcat - MTA: Postfix, Qmail, Exim - FTP Servers: Pure-ftpd, Proftpd, vsftp - Firewalls: ipfw, ipchains, iptables - Network tools: route, iproute2, natd, tcpdump, netcat, trafshow - Databases: MySQL, MSSQL, Redis - Network file systems: GlusterFS - Virtualization: OpenVZ, Xen, VMware, Virtual PC - Version Control Systems: Subversion - Control panels: cPanel, WHM, Plesk - Monitoring systems: Nagios, Zabbix, Monit, Munin, Cacti - Cloud services: Amazon EC2 - Bug tracking systems: Mantis, Redmine, Trac, Jira - VPN: Mpd, OpenVPN, PPTP - Other software: Squid, Samba, Bind, Radius, Varnish, HAproxy, Wowza Media Server

    $33.33 /hr
    44 hours
    5.00
  9. 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
  10. Jose Arteaga

    Jose Arteaga

    Cisco Telecommunications Engineer - Powering productivity through Comm

    Venezuela - Last active: 5 months ago - Tests: 6

    Who I am... Network Engineer with 5+ years of experience working with a variety of technologies from different vendor like Cisco, VMware, Microsoft, Watchguard, Barracuda, etc. I had designed and implemented networks from scratch starting on the infrastructure (Routing and Switching), Security and finally the Applications (Unified Communications and Collaboration). My Mission... I specialized on designing and implementing network solutions for small, medium and large businesses in many different vertical markets like the oil and gas industry, banking, food and beverages industry and others. I had achieved customer satisfaction 100% of the time and exceeded their expectations while staying on-budget, meeting deadlines and finding new business opportunities inside the company and the customers. Always looking for the biggest challenges that help me excel myself not only in the networking field, but also in the business management side of the company making myself an integral and interdisciplinary engineer capable of achieving the impossible.

    $50.00 /hr
    257 hours
    4.99