VoIP Consultants & Developers

Showing 3,947 freelancers

VoIP Consultants & Developers

Showing 3,947 freelancers

  • FPGA/ Embedded Desinger

    Experienced with embedded software/hardware/FPGA design and development for safety/performance critical systems. Specialties: 1- Languages: C, C++, C#, Verilog, Vhdl and Assembly 2- IDEs: XILINX ISE, QUARTUSII, High Performance Embedded Workshop (HEW), KEIL, AVR STUDIO and MPLAB. 3- … more

    Experienced with embedded software/hardware/FPGA design and development for safety/performance critical systems. Specialties: 1- Languages: C, C++, C#, Verilog, Vhdl and Assembly 2- IDEs: XILINX ISE, QUARTUSII, High Performance Embedded Workshop (HEW), KEIL, AVR STUDIO and MPLAB. 3- Hardware Platforms: Mitsubishi M16C, ARM, AVR, 8051, Virtex-5 FPGA 4- Simulation: MATLAB and MODELSIM 5- Debugging: Signal integrity testing, JTAG debugger, Oscilloscope, Logic Analyzer.  less

    embedded-systems vhdl verilog algorithms electronics pcb-design altium-desiger eagle-pcb circuit-design 00 more less
    • $33.33 HOURLY RATE
    • 5.0
    • 103 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 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
    • 7543 HOURS
    • CANADA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 9 TESTS
    GROUPS:
  • Expert iPhone/iPad/Android/Blackberry/C#/ASP.Net Developer

    I have 6+ years of experience in mobile application development. Till now I developed 50+ iPhone/iPad/Android/Blackberry/Windows Mobile/Blackberry-Tablet apps. In addition to my development, I have more than 10 years experience of professional Web design/programming … more

    I have 6+ years of experience in mobile application development. Till now I developed 50+ iPhone/iPad/Android/Blackberry/Windows Mobile/Blackberry-Tablet apps. In addition to my development, I have more than 10 years experience of professional Web design/programming using ASP.Net, MS SQLServer, WPF, WCF, .Net Remoting, HTML, CSS, JSP, PHP, JavaScript, AJAX, JSON, RSS, MySQL, Web Services, API, Payment Gateway Integration. I am very fluent in Objective-C/Java /C# and C/C++ application development. I have made use of APIs of SNS(Facebook, Twitter etc.), Google Maps, GPS, In App Purchase, Dynamic contents update from web DB and more. The most important thing for me is a quick and quality work that the customer was satisfied. I specialize in making things intuitive, engaging and enjoyable. A prominent feature of my applications involves writing well organized code. I'm seeking opportunities to develop apps for you and your business.  less

    objective-c iphone-app-development android-app-development blackberry-jde windows-phone c# asp.net .net-remoting wpf wcf t-sql php cakephp amazon-web-services xml-web-services google-maps-api google-places-api c c++ java ios-development blackberry-app-development facebook-api twitter-api ipad-app-development cocoa-touch cocoa cocos2d multithreaded-programming soap ajax html5 uml microsoft-visio git svn tortoise-svn mac-os-app-development apple-xcode apple-uikit-framework twilio-api sql linq sqlite microsoft-visual-basic 00 more less
    • $20.00 HOURLY RATE
    • 5.0
    • 1833 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 22 PORTFOLIO ITEMS
    • 5 TESTS
  • Senior Linux Administrator / Asterisk / VoIP / cPanel / Perl / BASH

    I am a senior technical engineer who has 10 years IT experience in the following areas: Advanced Linux Cluster Administration Advanced Knowledge of shell scripting Network Administration Network Security (Penetration Testing) Server Auditing Technical Support Virtualization (mainly Parallels Virtuozzo/openVZ … more

    I am a senior technical engineer who has 10 years IT experience in the following areas: Advanced Linux Cluster Administration Advanced Knowledge of shell scripting Network Administration Network Security (Penetration Testing) Server Auditing Technical Support Virtualization (mainly Parallels Virtuozzo/openVZ) Web hosting Control panels such as cPanel,Plesk,DirectAdmin Tweaking and Optimizing Apache for better performance Hardening PHP Data recovery Asterisk/Trixbox/Elastix/VoIP solutions.  less

    linux-system-administration asterisk mysql cpanel whm centos samba apache-administration perl security nagios bash freepbx trixbox 00 more less
    • $44.44 HOURLY RATE
    • 5.0
    • 4928 HOURS
    • EGYPT
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 7 TESTS
  • American PHP/MYSQL/HTML/CSS/AJAX Web Programmer

    My name is Matthew Belden, I am an IT Professional based in the United States. I have extensive experience working on the LAMP platform (Linux/Apache/MYSQL/PHP) and the frameworks built upon it: Zend, Magento, Wordpress, Expression Engine, CodeIgniter … more

    My name is Matthew Belden, I am an IT Professional based in the United States. I have extensive experience working on the LAMP platform (Linux/Apache/MYSQL/PHP) and the frameworks built upon it: Zend, Magento, Wordpress, Expression Engine, CodeIgniter, cakePHP, etc. I turn over code that is well commented, standard compliant, and cross-browser compatible, all with security in mind as the first priority. Additionally, I am adept in the more interactive web technologies: Javascript \ JQuery \ AJAX. I have been web programming since I received my BS Computer Science from Tufts University approximately eight years ago, and would not hesitate to call myself a rockstar programmer! Please don't hesitate to ask for a quote or a bid on a project you have in mind, I will be happy to give you a realistic timeframe and cost.  less

    zend-framework codeigniter php jquery magento javascript mysql mongodb expression-engine apache-administration linux-system-administration oscommerce ajax css html facebook-api twitter-api 00 more less
    • $100.00 HOURLY RATE
    • 4.9
    • 837 HOURS
    • UNITED STATES
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 5 TESTS
  • C/C++, Qt, Linux, Java and open source technologies medical engineer

    In my career; I developed many Projects based on open source technologies like Linux, Qt, MySQL, Java. Projects were mainly of a medical nature; ranging from embedded to desktop to web applications. What always interests me are embedded projects, projects … more

    In my career; I developed many Projects based on open source technologies like Linux, Qt, MySQL, Java. Projects were mainly of a medical nature; ranging from embedded to desktop to web applications. What always interests me are embedded projects, projects of complex functionality that adds emphasis on usability and user experience. Also Qt projects; I'm fascinated by this toolkit. Generally I have a good OOA&D; skills; UML and desgin patterns knowledge, and always like to read about different programming paradigms.  less

    c++ qt medical-informatics e-health medical-imaging medical-transcription 00 more less
    • $30.00 HOURLY RATE
    • 4.4
    • 3538 HOURS
    • EGYPT
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 17 TESTS
  • IBM/WebSphere/Java/J2EE/OSS/BSS/Oracle/PL SQL/Struts/Hibernate

    8 years of experience including designing, application development, customization, support, and infrastructure uplift involving JAVA/Enterprise Application Integration (EAI). Experienced in Java back-end, middleware development, XML, Java Web Services, WSDL, IBM WebSphere Family, Linux/AIX, bash shell scripting, developer tools … more

    8 years of experience including designing, application development, customization, support, and infrastructure uplift involving JAVA/Enterprise Application Integration (EAI). Experienced in Java back-end, middleware development, XML, Java Web Services, WSDL, IBM WebSphere Family, Linux/AIX, bash shell scripting, developer tools (RAD, Eclipse, SVN). Experienced in design, development, Integration using WebSphere Message Broker and Process Server. Well versed with ESQL and JAVA programming to handle message routing and transformations. IBM WebSphere Message Broker V6.1, Certified (Solution Development). Extensive practical hands-on experience of IBM products stacks such as WebSphere Message Broker, WebSphere Application Server, WebSphere Process Server, WebSphere Portal Server and Tivoli Access Manager. Embracing new technology, developments and methodologies in providing quality services to the clients.  less

    j2ee java-servlets-development jsp oracle-pl/sql java j2se javascript ibm-websphere apache-tomcat netbeans eclipse oracle-database mysql joomla wordpress 00 more less
    • $22.22 HOURLY RATE
    • 4.9
    • 669 HOURS
    • AUSTRALIA
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 11 TESTS
  • Network & Linux Systems Engineer

    Network Engineering position that capitalizes on expertise in CISCO Routers/Switches & ASA Firewalls, Linux/Unix (RedHat, Debian, SUSE, BSD, CENTOS, FC, Ubuntu), Windows 2000/2003 platform. Dedicated to pursue further challenges in the field of Networking Engineering wherein my skills … more

    Network Engineering position that capitalizes on expertise in CISCO Routers/Switches & ASA Firewalls, Linux/Unix (RedHat, Debian, SUSE, BSD, CENTOS, FC, Ubuntu), Windows 2000/2003 platform. Dedicated to pursue further challenges in the field of Networking Engineering wherein my skills and knowledge will be highly developed and utilized. Maintain focus on achieving end-results while demonstrating strategic problem solving skills and ability to follow through with multi-tasking job. Can work with any new challenges especially in the Networking field with minimum instructions. I am also experienced with other vendor swithces such as 3Com, LinkSys, Prolink etc. Firewalls from other vendors such as NetScreen, Fortigate 1000FA2, SonicWall, Monowall...Confident in HTML troubleshooting, Mail Server in Linux Platform, Perl/PHP, MySQL, SQUID, DHCP/DNS Servers in Linux..  less

    ssl smtp tcp-ip cisco-routers cisco-asa zimbra-administration linux-system-administration network-security centos 00 more less
    • $33.33 HOURLY RATE
    • 5.0
    • 23 HOURS
    • BANGLADESH
    • LAST ACTIVE
    • 3 PORTFOLIO ITEMS
    • 6 TESTS
  • Android/Flash programmer

    If you are looking for Android or Flash developer, especially if you need to handle multimedia data in your project, likely I will be excellent choice for you. I have decent knowledge of C, Java(for Android), AS3(Flash), C … more

    If you are looking for Android or Flash developer, especially if you need to handle multimedia data in your project, likely I will be excellent choice for you. I have decent knowledge of C, Java(for Android), AS3(Flash), C++. Also I have good skills of using FFmpeg, powerful library for audio/video editing, transcoding or adding effects. Apart from that, I have experience of using different minor stuff like Facebook API, Instagram API, git(source code management system) etc.  less

    android-app-development c java game-development actionscript-3 c++ ffmpeg git facebook-api 00 more less
    • $38.89 HOURLY RATE
    • 5.0
    • 273 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 12 TESTS
    GROUPS:
  • Computer Systems & Network Engineer CCNA|MCSA|MCITP|OCP|ITIL|VMWARE

    I have done Computer Systems Engineering, worked with different companies for three years and now starting to work as a full time Free Lancer. I have an extensive first hand experience of dealing with System Networks, Windows Servers ( 2003, 2008 … more

    I have done Computer Systems Engineering, worked with different companies for three years and now starting to work as a full time Free Lancer. I have an extensive first hand experience of dealing with System Networks, Windows Servers ( 2003, 2008),2012 different vendors Internet management and security solutions ( Hardware and software) like Air Live 802.11G Internet Access Server, Sonicwall,WatchGuard , ISA 2006 server, GFI Web Monitor, HP Servers, Client and server OS. Other than professional experience I have done Worked in following virtualization software's VMware ESXi 5.0-5.5 Microsoft Hyper-V, Sun/Oracle Virtual Box. Other than professional experience I have done different International Certifications CCNA. MCITP Windows7 Enterprise MCSA Windows 7 MCTS. | Windows 7 MCTS. | Windows 8 PRO: Designing and Deploying Messaging Solutions with Microsoft Exchange Server 2010 OCP( Oracle Sun Solaris OS 10 System Administrator) ITIL Foundation. VTSP 5 I have successfully completed following projects, that were for IT Govt Sector and five star Hotel's Planning Designing and Establishing Network Infrastructure using Microsoft Operational Framework (MOF v 4.0),network consisted of 200+ clients and 20 + servers (HP Proliant ML-150, ML-350,Dell Power Edge 2900). Installation configuration and management of ISA Server 2006,Juniper SSG 5 working together, providing security solution for more than 100 static and 200+ dynamic clients. Automate the process for Management of Internet User Account for the users by Implementation of RADIUS Server In-house developed Software Application Up gradation of clients systems from Windows XP to Windows 7 . Up gradation of domain from Server 2003 to server 2008 Enterprise R2 .  less

    microsoft-hyper-v-server windows-administration vpn security vmware-esx windows-7-administration asterisk voip-administration amazon-ec2 elastix 00 more less
    • $33.33 HOURLY RATE
    • 4.9
    • 319 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 12 PORTFOLIO ITEMS
    • 13 TESTS
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