Network Administrators & Consultants

Showing 3,656 freelancers

Network Administrators & Consultants

Showing 3,656 freelancers

  • AWS Partner Cloud Systems Architect

    Cloud Systems Architect with heavy immersion in all AWS technologies. Member of the AWS Partner Network and AWS Accredited Technology Professional. Prominent member of the Rightscale ecosystem, serving on the Customer Advisory Group. Significant project experience with Azure, Rackspace, and … more

    Cloud Systems Architect with heavy immersion in all AWS technologies. Member of the AWS Partner Network and AWS Accredited Technology Professional. Prominent member of the Rightscale ecosystem, serving on the Customer Advisory Group. Significant project experience with Azure, Rackspace, and OpenStack. Looking for new challenges, interesting problems, and not afraid of big numbers. My work has been equally split between Linux and Windows systems with a focus on creating new technologies. In addition to domestic work, I have engineered software and hardware solutions on several continents for US companies, working with foreign specialists to solve problems in the States. My primary skills lie in the automation and orchestration of highly scalable, highly available systems. I am looking to use these skills to grow my experience and knowledge, and I'm most interested in implementing original solutions for unique problems. Please note that although I am sometimes available for emergency situations, I am usually working on several projects at any given time and generally cannot accommodate requirements that need to be fulfilled yesterday. Platforms: Rightscale/AWS/Rackspace/Azure Systems: Specializing in Microsoft technologies with an extensive Linux background Databases: MongoDB/MySQL/MSSQL/Oracle Core competencies in most AWS products Aussi, je parle le français si vous êtes intéressé. Keyword alphabet soup: Hadoop, NoSQL, Nginx, Apache, Ubuntu, Centos, RedHat, OS/X, CloudWatch, Nagios, Icinga, AWS-CLI, HAProxy, ELB, VPN, Chef, Cloudformation, Redshift, Glacier, S3, DevOps, Shell, Bash, Powershell, Python, Git, SVN, OpsWorks, JIRA, LiquidPlanner, Salesforce, OpenVPN, etc...  less

    amazon-ec2 amazon-s3 seo lamp-administration database-administration windows-administration scripting iphone-app-development rest php apache-struts magento mysql mac-os-app-development dns microsoft-exchange-server windows-azure sql-azure haproxy amazon-web-services amazon-rds amazon-mechanical-turk-api iis database-management rightscale 00 more less
    • $111.11 HOURLY RATE
    • 5.0
    • 5098 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 6 PORTFOLIO ITEMS
    • 5 TESTS
  • 7+ years,C++/Qt, C#/.NET, Mac/Linux/Win,Network Engineer,Cryptography

    Expert Desktop and Web application developer. Created softwares with various technologies :- Network, Multimedia, Database, XML applications, 2D Graphics. I love Qt/C++ just like may other Qt developers. My development experience spans all major OS - Windows/Linux/MacOSX. My web … more

    Expert Desktop and Web application developer. Created softwares with various technologies :- Network, Multimedia, Database, XML applications, 2D Graphics. I love Qt/C++ just like may other Qt developers. My development experience spans all major OS - Windows/Linux/MacOSX. My web application programming experience includes advanced ASP.NET AJAX application with HTML/CSS/Javascript programming. I have also created professional toolkit in .NET (See my portfolio). Unlike others, I am very good at quick learning, fast thinking and creating novel solutions of the problems I face. Computers has been my hobby since childhood. Hence I have experience in many divergent fields in computers. I have developed and pckaged for all 3 major OS Windows/Linux/MacOSX. If you run linux desktop, you must be my copyrighted code. Incidentally I also have experience of Linux server administration. Experience of Key technologies:- 1. Qt-1.x/C++, Qt-2.x/C++, Qt-3.x/C++, Qt4.x/C++, Qt5.x/C++ , C++11 Modules of Qt:- QtCore(for Console programming), GUI, MultiMedia, Network, XML, Sql, Phonon, GraphicsView framework, Interview Framework, Arthur painting system, ActiveX and many others. 2. Qt/C++ for Windows, Qt/C++ for MacOSX, Qt/C++ for Linux( All versions) 3. Build systems for MacOS, Linux, Windows. PackageMaker for MacOSX, RPM and Deb build systems for linux, MSI installers for Windows. 4. Rich Multimedia Applications with Recording and Playback facilities. 5. Complex Network Applications. It includes creation of new protocol and manipulation of often used protocols. Like FTP, HTTP, SSL enabled HTTP (HTTPS). Socket programming. Secure Programming. 6. Reverse Engineering, Hacking Softwares and Network (Ethical only). Decryption, Decoding of algorithms 7. Various Version control systems ( VCS ). Like SVN, CVS, Git etc. 8. Almost all Visual studio flavours. Visual Studio 6.0, Visual Studio 2005, Visual studio 2008, Visual Studio 2010, Visual Studio 2012. 9. Web services, which included WSDL, SOAP, REST frameworks. 10. SQL databases like Mysql, MS-SQL, Postgresql, Sqite 11. HTML, CSS, Javascript, Jquery, AJAX 12. C#, .Net, ASP.NET 13. All kind of symmetric/Assysmetric encryption, RSA, DSA, AES, DES, 3DES, Blowfish. Hashing algorithm like MD5, SHA1. 14. Working experience of Adobe Photoshop. 15 AAF format Creation and Manipulated. AAF SDK. 16. Barcode Generation. EAN13, GS-128, Code-128 etc. 17. All major 3 OS software development : Windows, MacOSX, Linux . I have them installed side-by-side. Keywords :- Qt-1/C++, Qt-2/C++, Qt-3/C++, Qt-4/C++, Qt-5/C++, Reverse-engineering, Decryption, Decoding, Hacking, SVN, Git, SQL, Database, Network, Multimedia, IDE ( Integrated Development Environment ), Visual Studio, Qt developer, Qt Engineer, experienced Qt engineer, Qt Programmer, C#, ASP.NET, .Net  less

    qt c++ c# .net-framework css asp.net html javascript sql multithreaded-programming 00 more less
    • $59.50 HOURLY RATE
    • 4.9
    • 4038 HOURS
    • INDIA
    • LAST ACTIVE
    • 7 PORTFOLIO ITEMS
    • 6 TESTS
  • Expert in GNU/Linux/Opensource/Embedded software

    Looking for challenging new projects which can effectively use my talents and creativity, to generate cost effective software solutions. I'm a world class C programmer (primarily on Unix/Linux) and I'm used to making "impossible" tasks "possible". I … more

    Looking for challenging new projects which can effectively use my talents and creativity, to generate cost effective software solutions. I'm a world class C programmer (primarily on Unix/Linux) and I'm used to making "impossible" tasks "possible". I have a great deal of expertise in: * real time embedded systems * cross compilation/software construction * source control * network programming * system administration * kernel level programming/device drivers * image processing * performance and metrics  less

    c unix-system-administration embedded-linux linux-system-administration tcp-ip driver-development assembly-language agile-software-development object-oriented-design image-processing version-control freebsd dhcp git subversion reverse-engineering make-build-script 00 more less
    • $83.33 HOURLY RATE
    • 4.8
    • 3028 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 4 TESTS
  • SQA/Testing/Security/Networks/Development/Technical Writing(Canada)

    Over my career I have been handed a great many challenges and I have throughly enjoyed finding solutions for my clients problems. I have not limited myself specifically to one area but many, and have enjoy a diverse technical career … more

    Over my career I have been handed a great many challenges and I have throughly enjoyed finding solutions for my clients problems. I have not limited myself specifically to one area but many, and have enjoy a diverse technical career. I am a skilled, hard working, dedicated IT professional with over 10 years of experience. I have development experince in numerous languages and specialize in PHP/MySql web development and Linux/Windows scripts and applications. I have excellent communication skills and am available at your need.  less

    php mysql joomla technical-writing jquery facebook-api twitter-api java erlang xmpp mobile-app-development wordpress selenium zend-framework linux-system-administration performance-testing software-testing project-management subversion node.js google-analytics .net-framework c++ css3 cppunit junit unit-testing automated-testing coldfusion 00 more less
    • $33.33 HOURLY RATE
    • 5.0
    • 7564 HOURS
    • CANADA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 9 TESTS
    GROUPS:
  • Expert PHP dev and GNU/Linux Sys Admin, Mysql, Symfony, Javascript

    7 years experience as PHP Web Developer. Reliable and competent service. I'm expert in LAMP platform (Linux/Apache/Mysql/PHP). My focus is on free software tools and frameworks. Good background in Object Oriented Programming and Databases from my … more

    7 years experience as PHP Web Developer. Reliable and competent service. I'm expert in LAMP platform (Linux/Apache/Mysql/PHP). My focus is on free software tools and frameworks. Good background in Object Oriented Programming and Databases from my years in the university. I have experience with: PHP, Symfony, SugarCRM, Python, Web Services, SOAP, JQuery, Ajax. Also, I'm a GNU/Linux system administrator, mostly installing/configuring websites with Apache, Drupal, Wordpress, Firewalls, shell scripting and automation. I work with Debian GNU/Linux and Emacs in a daily basis. I am a native Spanish speaker. Some of my works: Adaptation of SugarCRM (PHP) with Asterisk IVR, Web Services and other requeriments for Contact Center of an important Bank in Argentina. A clone of youtube and social sites in PHP for a Marketing agency. Bug tracker and other web apps made in Symfony framework. I also have knowlege of: Smalltalk, C, Assembler, Networking, Software Engineering concepts, UML diagrams, ER diagrams.  less

    linux-system-administration php sugar-crm symfony 00 more less
    • $27.78 HOURLY RATE
    • 4.9
    • 7121 HOURS
    • ARGENTINA
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 1 TEST
    GROUPS:
  • Professional Web & Graphic Designer 9+ Years of Technical Experience

    I have been in the IT field for over 9 years now. I started using my skills in Web & Graphic design at an early age and it led to many opportunities. I own a small business dealing in Technical contract … more

    I have been in the IT field for over 9 years now. I started using my skills in Web & Graphic design at an early age and it led to many opportunities. I own a small business dealing in Technical contract work. My prime focus in the Web Market is Content Management Systems (CMS) like Joomla. I have worked with systems like Joomla everyday for the past few years and know them very well. Skills Include: CMS Management and Site Development, Web Design, Graphic Design, Flash, HTML Variations, PHP, Javascript, MySQL, Database Administration, Server to Server Transfers, SEO, Social Network Development, etc..  less

    joomla virtuemart adobe-photoshop adobe-fireworks adobe-flash php xhtml adobe-dreamweaver jomsocial mysql css 00 more less
    • $45.00 HOURLY RATE
    • 4.8
    • 310 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 6 TESTS
    GROUPS:
  • PhD in Computer Science

    If you are stuck and the deadlines are near. If you need the job done fast - send me a message! I have 20 years experience leading Software Design and Software Development teams. I am results-driven, customer-focused, analytical Software Engineer. I … more

    If you are stuck and the deadlines are near. If you need the job done fast - send me a message! I have 20 years experience leading Software Design and Software Development teams. I am results-driven, customer-focused, analytical Software Engineer. I am strong in design, integration and problem solving skills. I have worked in various programming languages and platforms including social networking. I follow SDLC lifecycle process and methodologies. The end product is always highly scalable solution. http://githelp.us/  less

    postgresql php mysql tcp-ip data-structures cisco-ios cisco-routers database-modeling database-management microsoft-access firebird interbase jquery html html5 unix-shell database-programming sql t-sql virtualization javascript yii-framework linux-system-administration network-administration database-testing perl bash vpn selenium netbeans human-resource-management project-management windows-azure microsoft-project facebook-api amazon-ec2 amazon-web-services amazon-s3 phpmyadmin ajax saas venture-capital-consulting process-architect information-architecture information-design amazon-rds strategic-planning marketing-strategy couchdb startup-consulting business-valuation bgp hadoop data-mining machine-learning genetic-algorithms algorithms redis mongodb memcached database-administration database-design redmine artificial-intelligence management-development 00 more less
    • $50.00 HOURLY RATE
    • 5.0
    • 1345 HOURS
    • BULGARIA
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 13 TESTS
    GROUPS:
  • can't do is not an option

    - Linux maintenance/troubleshooting (RHEL, Centos, Debian), - Cloud hosting (Amazon EC2, AWS, S3), - Networking (dhcp, DNS:powerdns/bind/named, vpn: openvpn/pptp, firewalls: iptables/ipfw, qos, proxies), - Web servers (apache, nginx, lighttpd), - Mail servers (exim, postfix, qmail, antispam/ antivirus: clamav/spamassassin … more

    - Linux maintenance/troubleshooting (RHEL, Centos, Debian), - Cloud hosting (Amazon EC2, AWS, S3), - Networking (dhcp, DNS:powerdns/bind/named, vpn: openvpn/pptp, firewalls: iptables/ipfw, qos, proxies), - Web servers (apache, nginx, lighttpd), - Mail servers (exim, postfix, qmail, antispam/ antivirus: clamav/spamassassin/amavis, courier, dovecot), - Bulk marketing (Dkim, spf, high speed/inboxing, interspire, powermta,returnpath), - Automation (puppet, perl/shell/awk scripting), - Monitoring (nagios, zabbix,cacti), - Database Optimization,Replication (MySQL)  less

    mysql apache-administration lamp-administration postfix amazon-ec2 amazon-web-services squid nginx magento linux-system-administration performance-tuning load-balancing clustering haproxy centos 00 more less
    • $33.33 HOURLY RATE
    • 5.0
    • 97 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 1 TEST
  • Zendesk Expert

    I have been managing multiple Zendesk systems for almost 3 years. I have been involved in all stages of the Zendesk setup process. Process mapping, planning, implementation, testing, support and continues enhancement on the users experience in Zendesk. I am … more

    I have been managing multiple Zendesk systems for almost 3 years. I have been involved in all stages of the Zendesk setup process. Process mapping, planning, implementation, testing, support and continues enhancement on the users experience in Zendesk. I am very familiar in all aspects of Zendesk, the use of business rules to achieve the desired workflow, implement automations to increase productivity for agents, customize Zendesk using its built in functions and integrations. I am abreast with the latest Zendesk features, api, and integrations which allows me to be able to always find ways of implementing desired functionalities by being able to fully understand all aspects of Zendesk of what it can and it can't do. My core competency is ingenuity and creativity in terms of finding ways to make things work out for the client, hard working and fluent in communication.  less

    data-entry technical-support project-management customer-support administrative-support 00 more less
    • $22.22 HOURLY RATE
    • 5.0
    • 8102 HOURS
    • PHILIPPINES
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 7 TESTS
  • MCITP, MCSE, Virtualization, Network Engineer/Mangr, Writer

    Experienced Technology Leader, Implementation Manager, Change Agent and MCSE/MCITP. In-depth knowledge of IT systems and operations, project management, large-scale system implementations and information security with over twelve years with hands on experience as an Enterprise Administrator and Network Manager … more

    Experienced Technology Leader, Implementation Manager, Change Agent and MCSE/MCITP. In-depth knowledge of IT systems and operations, project management, large-scale system implementations and information security with over twelve years with hands on experience as an Enterprise Administrator and Network Manager in NT, 2000, 2003 and 2008 environments. Extensive experience in Server Virtualization including VMware and Hyper-V integrated with HP and EMC SANs. Practiced understanding of Exchange, Lync Server 2010, Fortigate UTM devices, Active Directory, PKI and DFS. Five years of experience as a corporate Microsoft/Certification trainer and serving as an MCSE/CCNAinstructor for technical schools, colleges and corporations such as AT&T; and Comcast Cable. I have created course curriculum for two online schools. I am extremely proficient in Server 2012 and 2008, including Server Core edition, Hyper-V, Fortinet, VMware, Procurve, HP and EMC SANs, Active Directory, Exchange, SQL, Procurve switches and many other technologies. I have been highly involved in server virtualization for seven years and am proficient in both VMware and Microsoft Hyper-V. I am also a professional writer and have contributed to several white papers and authored published articles in professional journals. Have also written and reviewed test questions for IT professional certifications. I am looking for other opportunities to supplement my work load. My Microsoft Profile can be accessed by this link: http://www.mcpvirtualbusinesscard.com/VBCServer/brad.rudisail/profile For more information on me go to www.bradinthecloud.com  less

    virtualization security technical-documentation microsoft-active-directory technical-writing white-paper-writing windows-administration 00 more less
    • $36.94 HOURLY RATE
    • 4.8
    • 1778 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 3 TESTS
    GROUPS:
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