IT & Networking Administrators

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  1. Ivan C.

    Ivan C. Agency Contractor

    Node.js / RoR / PHP / MongoDB / PHP / Laravel

    Russia - Last active: 14 hours ago - Tests: 13 - Portfolio: 7

    I have more than 8 years of web-development and database administration experiences for various kinds of applications. I have extensive experience in database optimization. I focus on PHP, JS, Node.js, RoR, MySQL, PostgreSQL, MongoDB. * Node.js development * Zend Framework / Codeigniter * Database design * Optimizing database performance * Ensuring security in the database * Ensuring the integrity of databases I participated in the creation of high-load systems (Hundreds of queries per second). I'll be glad to help you. Best regards, Ivan.

    Associated with: Lodoss team

    $35.00 /hr
    7,422 hours
    5.00
  2. Leo joseph G.

    Leo joseph G. Agency Contractor

    Senior PHP / Yii / MySQL / jQuery/jQMobile Developer & Project Manager

    Philippines - Last active: 14 hours ago - Tests: 7 - Portfolio: 16

    I am an expert in my field and I am also recognized by oDesk recently as one of the top Filipino Contractors (see my portfolio). All my clients can attest that I am trustworthy, very professional, knows the importance of deadlines and I work fast yet efficiently. If you are looking for someone who can take your project to the next level, I assure you that I am that person.

    Groups: Yahoo Web Hosting Designer

    Associated with: Pinoy WEb DEvs (PWEDE)

    $32.22 /hr
    10,240 hours
    5.00
  3. Collin M.

    Collin M. Agency Contractor

    Senior Full Stack Developer (Mobile, Web, Script/ Utilities)

    United States - Last active: 14 days ago - Tests: 4 - Portfolio: 15

    I have 10 years of experience in both web and mobile software development as well as script and utility programming. My current main area of interests is within Data Science including data mining/scraping. I have several years of experience in writing screen scrapers for online data sources (scraping in total more than 500 sites). I will be happy to craft a state of the art product for you using the following techs: Bootstrap, AngularJS, BeautifulSoup, Scrapy. I am familiar with many others, but these are my favorite. WEB BACKGROUND I have wide knowledge of many modern technologies in web development stack -- from low-level networking protocols and system tweaking (debian, nginx) to server-side programming (PHP, Node.js, MySQL, MongoDB, Redis) to client-side programming (HTML5 APIs, Javascript, AngularJS). I could solve the programming task of any complexity for you. I prefer developing complex and unique web services and/or user interfaces rather than creating simple websites which are similar to each other. MOBILE BACKGROUND I am the Owner and CEO of a digital development firm, ebork Developments, LLC, which specializes in the development of mobile applications across all platforms (see below). Strong .NET, Java, Objective-C, and Swift programming skills including low-level performance optimizations and memory management. I not only know how to make an application work, but also know how to make it work fast and smoothly. Good knowledge of Android, iOS, and Windows UI patterns and guidelines. I can prototype any application UI for you. SCRIPT/ UTILITY BACKGROUND I have been writing data scrapers and other data intensive scripts/ utilities for many years. My language of choice for many of these is Python. However, I can successfully develop a utility in many scripting languages, including: PHP, Ruby, Perl, etc. I have written screen scrapers for over 500 websites, including Google Search and Craigslist. I have a very high working knowledge of HTML, which helps me quickly write any screen scraper you find yourself needing.

    Associated with: ebork Developments, LLC

    $44.26 /hr
    231 hours
    4.78
  4. Colette Chamberland

    Colette Chamberland Agency Contractor

    Website/Server Security Expert - Wordpress - Joomla - ASP/PHP

    United States - Last active: 14 hours ago - Tests: 9 - Portfolio: 5

    I am a professional website security expert and web developer. I have over 19+ years of experience in IT and over 10+ years of experience in the specialty of IT Security. I am a member of OWASP (http://www.owasp.org) Website/Server Security Services: Website/Server Malware/Virus/ backdoor Removal Hacked Website Restoration/Repair Penetration Testing Vulnerability Assessment Web Server/Site hardening For multiple platforms (such as): Azure, Windows/IIS LAMP VPS/Cloud For ANY of the following: Wordpress, Joomla, Drupal osCommerce, PrestaShop, Magento mediaWiki vBulletin, myBB, phpBB and many more. I can also work with custom built systems (PHP, Classic ASP,JavaScript, ASP.NET, plain HTML, CakePHP, etc.) and have extensive experience with MySQL, SQL Server, Access & Oracle databases. Also experienced using WHMCS, cPanel, SSH, Putty. Some of the tools I utilize for Penetration Testing and Vulnerability assessments include Kali, Burpe Suite, WPScan, JoomScan, OWASP Zed, NetSparker, Nessus, Metasploit, w3af. In addition to these tools, I also do manual testing for things such as Sql injection, Cross Site Scripting vulnerabilities, remote file uploads, etc. ( See the following link: https://www.owasp.org/index.php/Top_10_2013-Top_10) I am also a regular volunteer contributor on badwarebusters.org, a forum geared towards webmasters that have discovered malware on their website and need some assistance. https://www.badwarebusters.org/dashboard/cchamberland I also take on small development/maintenance jobs and work when I have additional time (my main focus is security). I can do: Wordpress customization/Custom Plugins Website hosting migrations Joomla upgrades/migrations Custom Classic ASP/ASP.NET MVC Custom PHP development LAMP Administration VPS/Azure configuration/set-ups & administration I also have extensive experience in optimizing high traffic wordpress sites, utilizing tools such as varnish,memcache, cloudflare, maxcdn, load balancing and troubleshooting performance issues with xDebug. I have worked with all major hosting providers and their setups, such as goDaddy, siteground, bluehost, dreamhost, rackspace, network solutions, azure, etc.

    Associated with: Scurit, LLC, IDPlex

    $60.00 /hr
    749 hours
    4.98
  5. Roman T.

    Roman T. Agency Contractor

    UNIX and security expert, network and system administrator

    United States - Last active: 9 days ago - Tests: 9 - Portfolio: 3

    I offer the following key services: o Network and System Administrator Services o Information Security Services o IP-PBX and VoIP softswitchs: installation and maintenance o Software development: Web, desktop and server applications o SEO o Complex solutions for business-process automation Core Competencies o Network and System Security o Data Integrity and Recovery o Analysis and Planning o Risk Assessment and Cost Benefits Analysis o Research and Development o Project Management Experience Platforms: IBM, Sun SPARC, MikroTik, Cisco, Huawei, D-Link, Edgecore. OSs: UNIX (FreeBSD, OpenBSD, *BSD, Solaris), Linux (Debian, Ubuntu, Gentoo, Red Hat, SuSe, uLinux, ASP, Mandrake, Fedora Core), CiscoIOS, MikroTik Router OS, VRP (Huawei), Windows 95/98/NT/ME/200/XP/2003/Vista/7/2008. Languages: C/C++, UNIX Shell Scripting (Shell, sed, awk), Delphi (Pascal), Perl, PHP, SQL, T-SQL, Assembler (Intel and AT&T SysV/386 syntax), GTK+ applications, Erlang, HTML, CSS, JavaScript, JQuery, XML, XSLT, DTD. Databases Engines: PostgreSQL, MySQL, Oracle, SQLite, Mnesia, MS Access, Sybase, DB2. CMS: WordPress, Bitrix, osCommerce, Joomla, RoundCube. Panels: CPanel, Plesk, ISPManager, Webmin. Networking: TCP/IP, ISO/OSI, IPv6, Ethernet, VLAN (dot1q), ARP, VRRP, CARP, MPLS L2, MPLS L3, STP, GVRP, PPPoE, VPN, PPTP, L2TP, IPSec, OpenVPN, SNMP, SSH, XMPP, SIP, h323, BGP, OSPF, RIP, IRC, AJAX, Netflow.

    Associated with: IntLös

    $35.00 /hr
    275 hours
    4.92
  6. Stoyan P.

    Stoyan P. Agency Contractor

    AWS / DevOps / Automation / Docker / Puppet / Linux / Python / Go/Ruby

    Bulgaria - Last active: 7 days ago - Tests: 6 - Portfolio: 4

    Essential skills and technologies: =========================================================== OS: RedHat/Centos, Ubuntu/Debian, FreeBSD, AIX and Solaris. IaaS/PaaS/Cloud: AWS, Rackspace, Heroku CM & Automation : Puppet expert Web & App servers: Apache, Nginx, Tomcat, Weblogic Databases: Mysql, PostgreSQL, CouchDB, Redis Monitoring: Nagios, Icinga, Zabbix, Monit, Munin, Cacti Virtualization: Citrix Xen Server, XCP, KVM, Xen, VMWare, LXC, Docker, OpenVZ Mail servers: Exim, Postfix Backups: Bacula, BackupPC HA: HAProxy, Keepalived, Corosync/Pacemaker, DRBD Programming & Scripting: Perl, Python, Ruby, Bash, Korn shell, SVN/Git Networking: DNS, DHCP, OpenLDAP, Samba, NFS, Vyatta OS, Quagga, Firewalls, Cisco/Dell routers & switches, OSSEC & IDS, Varnish, Vagrant Other: Atlassian products, Agile, ITIL ========================================================== Goals: ===== My major objectives are to provide high quality systems administration and architecture services, and create long-term relationships with my clients. I am a motivated self-started with very strong professional attitude towards any kind of job; a team player with rich experience working in large and small teams, able to follow long terms objectives and meet stringent deadlines. I am a certified Linux administrator with more than 10 years of experience working in web hosting, banking, telecom and IT security industries. I've designed and architectured highly scable and multi-tier envrionments on the cloud and in proprietary enterprise facilities around the globe. I can help you successfully complete your project(s).

    Associated with: GoToAdmins

    $62.50 /hr
    430 hours
    4.90
  7. Rohit A.

    Rohit A. Agency Contractor

    Salesforce Expert

    India - Last active: 4 days ago - Tests: 2 - Portfolio: 2

    Over the last 5 years, I have significantly grown and guided people for the usage and optimization of Cloud Computing for Enterprise goals and Salesforce was a major skill in this direction that I could acquire. The short term objective is delve more into a variety of projects to excel in Salesforce implementation.

    Groups: salesforce.com

    Associated with: Raider Data Services Pvt Ltd

    $60.00 /hr
    5,158 hours
    4.99
  8. Fedor P.

    Fedor P. Agency Contractor

    DevOps Engineer/ System Architect / Senior System Administrator

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

    Hello I'm highly experienced, certified engineer ( RHEL cert, Novel cert, MCSA, LPI 3, OpenText ) DevOps engineer with more than 10 years of experience in wide range of projects. Chief of system administrator team in software development company. Freelancer with more then 4 years in oDesk and "five star" rating. Full range of sysadmin support, system architect, security audit, PCI compliance, consulting, automation, DevOps best practices. If you have any project required professional system administration or DevOPS - I could be the one who you are looking for :) http://www.lxpert.info

    Groups: Microsoft Certified Professionals

    Associated with: Linux-xpert Agency

    $40.00 /hr
    6,149 hours
    4.99
  9. Denis dominik K.

    Denis dominik K. Agency Contractor

    IT Systems Engineer/ IT Consultant

    Croatia - Last active: 2 days ago - Tests: 3

    For past 8+ year in IT field i came in touch with Vmware/View,Microsof,Cisco and Linux/Unix based technologies. Started as Network Technician for Cisco equipment and installation and basic configuration of the Cisco equipment, and development of technical documents. Protection of network equipment, "security" which refers to Cryptocard Blackshield & RSA-ID authentication and continue via Windows Server W2K3/W2K8R2/SBS/Exchange and Hyper-V with basic Linux/Unix/HPUX administration. At the moment i am Consultant in Vmware/Hyper-V arena for virtualization of operating systems and maintains with more than 3 years experience. Simultaneous work on multiple projects has give me ability to learn how to organize my tasks and time schedules. Creative, self initiative, good communication and presentation skills, teamwork is not a problem.

    Groups: Microsoft Certified Professionals

    Associated with: Oenia IT Agency

    $30.00 /hr
    2,736 hours
    4.96
  10. Roman Sereda

    Roman Sereda Agency Contractor

    Cloud Architect - DevOps

    Ukraine - Last active: 3 days ago - Tests: 6 - Portfolio: 5

    System and network expert with strong work ethic and large experience in various IT fluids. Team player in big and small project - join fast and effective cooperate with different professionals. 13 year - total IT experience. 7 year - network and system administrator 5 year - Cloud expert 3 year - Streaming expert Last two year - active freelancer experience Streming Wowza, nginx-rtmp Scripting Python,Chef, PowerShell, PHP Deployment Chef, Capistrano, Puppet MySQL, Cassandra, MSSQL, Postgresql, MongoDB CouchDB WWW Apache,Tomcat, Nginx, IIS, LightHTTPd, HAProxy, Squid, Mail Sendmail Exchange Postfix Qmaill pop3 imap Monitoring Nagios Casti Zabix Windows Server 2008 R2 2003 2000 NT, Linux Debian Ubuntu RadHat CentOS SUN Oracle Solaris, BSDi, FreeBSD NAS, SUN, iSCSI, Big data backup DNS, DHCP, SMTP, SNMP H323,SIP, Asterix, Elastic, FreePBX, MySQL MSSQL Oracle Virtualizations. VmWare VSphere ESXi XEN KVM Project manager, Web Optimization, High Availability, Load Balancing Live Streaming solution. Video on Demand, IP TV, Media Server,

    Associated with: emyoli Agency

    $44.44 /hr
    559 hours
    4.88