SIP Freelancers

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SIP Job Cost Overview

Typical total cost of Upwork SIP projects based on completed and fixed-price jobs.

Upwork SIP Jobs Completed Quarterly

On average, 36 SIP projects are completed every quarter on Upwork.

36

Time to Complete Upwork SIP Jobs

Time needed to complete a SIP project on Upwork.

Average SIP Freelancer Feedback Score

SIP Upwork freelancers typically receive a client rating of 4.41.

4.41
Last updated: June 1, 2015

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  1. Raoul W

    Raoul W

    I am a mobile app developer

    Sweden - Last active: 5 days ago - Tests: 2 - Portfolio: 10

    Hello, Sir. I am a passionate mobile app developer with 5+ years rich experience. I am developing mobile apps since the first iPhone GPS tracker in April, 2010. I have several iOS and Android devices and developed apps compatible with all devices. Over all these years, I have accomplished amazing mobile projects successfully. Here is my skills and experiences in mobile development. - location tracking by GPS on iPhone/Android - Integrate Map using Apple MapKit and Google Map API - find location by geolocation - chat & message engine by XMPP Protocol - voice / video call using SIP Protocol - video streaming by HLS Protocol - photo / video processing - e-Commerce solution integrated with payment gateway - local and push notification As a skilled mobile developer, I will provide professional advice and perfect development solution. There is no problem to build mobile app with any idea or sketch. Thanks.

    $49.99 /hr
    2 hours
    5.00
  2. Volodymyr S.

    Volodymyr S. Agency Contractor

    Senior front end developer (HTML, JavaScript(Angular, Ionic), Flex

    Ukraine - Last active: 23 hours ago - Tests: 2 - Portfolio: 3

    Over last 9 years I have been working in IT. Last 3 years I have been developing on JavaScript (angularjs, ionic, knockoutjs, backbonejs, jquery, jqueryUI, jquery mobile, google maps API etc) Before javascript I developed 6 years on Flex and ActionScript. I have been working on more than 10 projects (big teams) for big companies (from Great Britain, USA, Canada, Belgium) Small knowledge of Java, PHP, SQL. Have experience in SIP/Wowza/Red5/AMS/AMG

    Associated with: TSF Solutions Agency

    $27.78 /hr
    3,979 hours
    4.91
  3. Gohar A.

    Gohar A.

    VoIP Consultant [Asterisk, freeSWITCH, Kamailio, OpenSIPs, Vyatta]

    Canada - Last active: 2 months ago - Tests: 3 - Portfolio: 15

    Since last 7 years now I'm involved intensely in end-to-end VoIP setups. That included pre-deployment 360 degree Architecture planning. Actual development of the projects, including aiding other teams develop the exact required component for the projects. And after deployment Support. My career objectives are to be a very flexible expert capable of working on almost any layer. Come up with intelligent solutions to help achieve business goals smartly. I'm proficient in following domains * VoIP * Server Administration * Network Administration I've experience in Following tools. * Asterisk * FreeSwitch * OpenSIPs * Kamailio * SEMS * Vyatta * MySQL * Linux OSs I've worked in following languages. * C++ * Perl * Php * Shell scripting Find More about Me from my VoIP Blog: http://saevolgo.blogspot.com

    $60.00 /hr
    152 hours
    4.99
  4. Basit azeem S.

    Basit azeem S.

    OCPJP, Expert in Spring/Hibernat/Java/JEE based Projects

    India - Last active: 23 hours ago - Tests: 6 - Portfolio: 10

    I am having 6+ years of professional experience in Design and Development of Java Technology based Desktop and Web Applications starting from Requirement Gathering phase to Testing and Delivery Phase. I have worked with giants like Tech Mahindra, Ericsson etc. as Software Engineer. Right now I am Sr. Software Engineer in a US based company where I am involved in design and development of various Web based projects on financial and telecom domain. My Skill set include - Core & Advanced Java, J2EE, Struts 1&2, Spring (All Modules), MVC 1&2, JSP, Servlets, JSTL, EJB, JSF, SIP Servlets, Web Services, Hibernate, MySql, Oracle, PL/SQL, JQuery, AJAX, DHTML, GWT. I worked extensively on many servers like JBoss, Sailfin/Glassfish, Tomcat, Weblogic on Windows and UNIX environment. I extensively worked on Eclipse and Netbeans and well aware of many Eclipse plug-ins like Debugger, JUnit, SVN/HG Plugin, WTP etc. I have good experience is SCM packages like GIT (GitHub, BitBucket), SVN, Mercurial (Hg). I am well versed with several build tools like MAVEN, ANT.

    $27.78 /hr
    2,131 hours
    4.76
  5. Geraint Jones

    Geraint Jones

    Linux - LAMP - Windows - EC2 - S3 - Vyatta - Cisco - VPN

    New Zealand - Last active: 1 month ago - Tests: 19 - Portfolio: 3

    My main skills are in systems administration (Linux/Unix and Windows) and large scale networking (Cisco/Juniper and Vyatta). I have over 10 years full time experience work with some of New Zealand's busiest networks. If it beeps I can work with it! I have been involved with many complex projects mixing many technologies, I am extremely technically competent but at the same time fully capable of presenting my ideas to non-technical people in an easy to understand manner. I am able to think outside the box to deliver solutions that fit my customers needs rather than having to be spoon-fed ideas. Interview me today - you will not be disappointed. I specialise in : - Infrastructure Design - Security Design and Testing - Large Scale Networking - Large Web Deployments - Large Database Deployments - Large VoIP Deployments - Enterprise Grade VPN Solutions - All aspects of Linux/Unix/Windows design and deployment (from single server to 100 node web farms)

    Groups: Joomla!

    $94.44 /hr
    763 hours
    4.66
  6. Jack B.

    Jack B.

    Asterisk/VOIP/Vicidial/FreePBX/Elastix Expert | Technical Support

    Philippines - Last active: 23 hours ago - Tests: 1

    Over the past 6 years, I have installed and configured a total of around 1,000 seats call center system with a maximum of 14 servers on one site using Vicidial on both standalone and multi-server setup. I have also installed and configured IPPBX systems, VOIP systems, GSM gateway systems and asterisk-based systems using FreePBX and Elastix ranging from small to medium business enterprises including integration of IPPBX to a legacy PBX(PABX) and to CUCM. My core competencies lies in Asterisk, Vicidial, GoAutodial, Vicibox, FreePBX, Elastix, Linux, SIP, IPPBX and PABX/CUCM integration, VOIP systems and GSM gateway systems. Installing and maintaining VOIP and call center systems remotely to my clients in the US, Singapore, Philippines, China, UK and Middle East has also helped me improved my skills and the way I deal with people especially in interacting and communicating with top management or owners of the business. With this, I'm seeking opportunities to install, develop, configure and support call center systems, VOIP systems and IPPBX systems from the ground up for you or your business. I have also experience in the following areas: - MySQL and Apache - Linux(CentOS, Redhat, Ubuntu, Opensuse, Fedora) and Windows Operating Systems - Microsoft Office applications - Basic to advance TCP/IP networking configuration - Basic to advance troubleshooting(system, software, hardware and networking) - SDLC, UML Diagrams and OOP diagrams - FTP - Remote desktop support - Firewall and linux/shell scripting - Softphones(Eyebeam, Bria Xlite Zoiper and Ekiga) configuration - IP Phones(Mitel, Polycom, Escene, Grandstream, Yealink, etc) configuration - Video Phones(Grandstream, Yealink, etc) configuration - Operator phone configuration - FXO/FXS gateway configuration - VOIP gateways(Dinstar, Grandstream, Audiocodes, Quintum Tenor, Digium) configuration - Sangoma/Digium/Atcom/Openvox card configuration(TDM/Analog, E1, E1R2, PRI/BRI, ISDN) - Multi-tenant IPPBX

    $33.33 /hr
    51 hours
    4.90
  7. Ruben Semerjyan

    Ruben Semerjyan

    Inovative Mobile VOIP, Social, Audio/Video Streaming Developer

    Armenia - Last active: 6 days ago - Tests: 2 - Portfolio: 1

    I am an innovative, extremely detail oriented and perfectionist Software Development Architect, with expert knowledge in VoIP, audio/video streaming and processing, messaging and social media. My a little over 8 years of experience in VoIP industry gave me a strong knowledge of the protocols, technologies and available solutions. 3 years of successful mobile applications development, architect and project management gave me confidence in creating robust and technologically challenging applications. I am passionate about developing robust, innovative and leading edge applications, getting increasingly challenging assignments and applying disruptive technologies. Looking for a work on technologically challenging projects (in an agile environment preferably), while offering my expert knowledge base, ability to learn quickly and apply new techniques. I usually bid slower than others, because of reading the full job description, trying to estimate all requirements, needed technologies and solutions.

    $25.00 /hr
    28 hours
    5.00
  8. Md. soliman F.

    Md. soliman F.

    OpenCart / WordPresss / eCommerce / Responsive Professional Developer

    Bangladesh - Last active: 23 hours ago - Tests: 8 - Portfolio: 58

    <OpenCart / eCommerce / Extensions / WordPress -- For any development you are always welcome. Ask anything that you have need for your eStore. Take lifetime support after development.> My skills and experiences are following - OpenCart Any custom functionality - OpenCart extension customization to add new functionality. - OpenCart, WordPress, OsCommerce,Magento, custom php-mysql project - OpenCart theme from the scratch - OpenCart store 100% functional to go live from PSD or JPEG design. - OpenCart store 100% functional to go live from HTML web site - OpenCart custom extension creation for your store. (With VQMOD or Without VQMOD) - OpenCart theme customization & installation. - WordPress Theme from the scratch - WordPress site customization,add advance plugins. - Web Service, Ajax, XML, JSON, RSS - MySQL, HTML, HTML5, PHP, JSP, CSS,CSS3, java script, jQuery <--Top Quality and Tight Deadline is my main personality in Developing.--> <However, If for any reason you are not pleased with my product then I will be happy to refund full money from you> Dear Hiring Manager, Thank you for taking the time to look at my resume.I am an Honest young programmer, I am from Bangldesh. I think when you are outsourcing for a contractor to complete your project, trust is very important, without trust, you have nothing.If you are looking for a reliable contractor to finish your project on time, then look no further, you have found the right person. -------Client Satisfy Perfectly -------Top Quality -------I do not exceed agreed budget. -------I do not exceed deadline.. I will always make best effort to satisfy clients requirements.I will always provide best result for clients. Kind Regards Soliman

    $15.00 /hr
    1,796 hours
    4.90
  9. Md. Shamim Shaharier

    Md. Shamim Shaharier

    Bangladesh - Last active: 23 hours ago - Tests: 2 - Portfolio: 8

    Asterisk, Freeswitch, vicidial,A2billing, Free pbx, elastix, PRI & PSTN card installation, call centre setup, Advanced IVR, Vmwire Esx, web-meetme ,Cloud solution using asterisk, training on asterisk, voice broadcast etc Installation Expertises in Asterisk, Freeswitch, vicidial, web -meetme, A2billing, Free PBX, Elastix,vmwire esx etc. IVR specialist in asterisk Advanced Dialplan in asterisk,asterisk realtime etc. Useful and cost-effective phone management system planning & designing & installation Expertises in Digium, Sangoma, Openvox ,grandstream FXO/FXS,Dinstar GSM gateway/FXO/FXS,and other type of PRI & PSTN Card installation. Connecting Multiple Asterisk Server & Cloud Solution for asterisk Call centre setup using vicidial,goautodial. Advanced Voice broadcast system Training on Asterisk,vicidial,elastix .

    $15.00 /hr
    41 hours
    4.94