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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, 39 SIP projects are completed every quarter on Upwork.

39

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 4.48.

4.48
Last updated: July 1, 2015

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  1. Arsen S.

    Arsen S.

    VoIP Administration & Development

    Bulgaria - Last active: 3 days ago - Tests: 2 - Portfolio: 6

    I am focused in VoIP field only and I have been working here for more than 8 years. My Area of experiences: VoIP -Asterisk PBX: Full proficiency -FreeSWITCH: Full proficiency -Yate: Full proficiency -Strong knowlege of SIP protocol and SIP routers/proxy servers -OpenSER (Kamailio/OpenSips) -Load Balancing, Least Cost Routing, High Availability, NAT Traversal, Rate and billing systems, etc. -IVR and Auto Attendant Development -Secure VoIP: TLS, SRTP, ZRTP Full proficiency in free Billing/CDR solutions: -A2Billing: Full proficiency (configuration from scratch, customisation) -CDRTool (prepaid billing/accounting and sip tracing for OpenSIPS using RADIUS) -CDR-Stats (call detailed statistic/realtime stat for asterisk and freeswitch) -cgRates (billing for Freeswitch) I provide: - Development of custom Billing and software solutions for Premium Rate Numbers business. - HA and Scalability solutions for existing VoIP networks. - Development and optimisation of VoIP networks/projects. - Ongoing support via request/ticket tracker system. - VoIP Security and Hacker protection solutions. I have successfully completed large amount of commercial installations of VoIP PBX servers. From SOHO to Enterprise deployment including integration of various VoIP solutions into existing network environment. I also have experience in building of secure "bastion" VoIP/Linux servers. Payment Terms: Minimal support package 5 hours. Short-term hourly support: $50 For long-term support please contact for price options. For sizable development projects please contact for price options. We charge upfront scoping (roadmapping meeting, flat-rate). Hourly based projects: -Current hourly rate is $50. Price per projects/feature: -Fixed price projects are calculated based on the hourly rate and expected task complexity. -For all fixed price projects complete project specification with clear tasks description is required -For all fix price projects work will be started only after payment has been es-crowed and both parties have agreed with working terms.

    $55.56 /hr
    175 hours
    4.54
  2. Ali N.

    Ali N.

    Software Architect / Developer(C++, C#), Computer Science Reseracher

    Sweden - Last active: 8 days ago - Tests: 13

    I have several years of experience in developing Windows and Web based software, including Sharepoint, database, and industrial monitoring and control applications. I have used Visual Basic, C#, C/C++ (Win32/MFC/CLR/Linux), and Microsoft SQL Server 2000-2008 proffesionally to develop software solutions. I used advanced object oriented concepts and architecture patterns in software development. Moreover, I am a computer science researcher. My research fields of interest include computational neuroscience, neuronal networks, artificial intelligence, robotics, and computer software.

    $60.00 /hr
    64 hours
    4.18
  3. Basit azeem S.

    Basit azeem S.

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

    India - Last active: 1 day ago - Tests: 6 - Portfolio: 10

    I am having 7+ 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. My Skill set include - Core & Advanced Java, J2EE, Spring (All Modules), Struts 1&2, 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
    2,285 hours
    4.76
  4. Abdelghafour H.

    Abdelghafour H. Agency Contractor

    Network and Software developer

    Morocco - Last active: 4 days ago - Tests: 4

    I'm a network, software developer, I have consequent experience in LAN/WAN protocol's configuration (Cisco, OneAccess) and development, I worked also on setting up and configuring IPTV and VoIP platforms, I developed many WEB architecture using J2EE, Ruby On Rails and Python Django technologies. My goals through oDesk is to create a trust based network of clients with whom, I can have a long term relationship developing solutions that best suit their needs.

    Associated with: Teliteck

    $33.33 /hr
    1,068 hours
    5.00
  5. Vahram M.

    Vahram M. Agency Contractor

    Expert of Streaming Technology for iOS | Android | WP

    Armenia - Last active: 2 months ago - Tests: 4 - Portfolio: 2

    My profession is: SIP, RTP, RTMP, XMPP protocols; VP9, VP8, H.265, H.264, Opus, Speex, AMR, GSM, G.7xx Video and Voice encoding and transmission; OpenFire, Red5, Asterisk, OpenSips Servers; TLS, SSH, RSA security; TCP and UDP sockets, Tunneling, TCP over UDP. My experience in software development is 15+ years. Last 6 years I am working in mobile application development, especially with Video Chat, Audio Calling, Instant Messaging and other Multimedia solutions.

    Associated with: Be Interactive

    $33.00 /hr
    6,500 hours
    4.79
  6. Nasir Bhutta

    Nasir Bhutta

    Dr, Programmer, Developer, security engineer

    Pakistan - Last active: 1 month ago - Tests: 3 - Portfolio: 9

    A software programmer with 7 - 8 years of programming in many different languages including c/C++, C#, VB, CB.Net, ASP.Net, Java, Python, Turbo Pascal etc. I have worked on many projects with many different clients from many different countries and in many different areas including Protocols, security products, APIs, Simulations, emulations, Web Development, Management Consultancies, Financial Consultancies, health care etc.

    $50.00 /hr
    0 hours
    0.00
  7. Tom Thomas

    Tom Thomas Agency Contractor

    CTO -14 Yr Exp - C++ ,QT/VC++,COM,C#, Rasp PI,Plugin,Dev Driver,SNMP

    India - Last active: 1 day ago - Tests: 6 - Portfolio: 8

    I am a 15 year experienced Professional C/C++/VC++/C#.NET/Java/ASP.NET Developer with Design and Management Experience. My core competency lies in the end to end development of C++ (especially VC++ and QT C++) and C#.NET based applications. I also have very good experience in managing a team of size 5 to 25. I helped many start-ups to make their dream a reality and I am happy to say that most of my customers are repeat customers. My oDesk profile and customer feedback reflects exactly the same story. Please go though my oDesk work history for more details. I am willing to work on both Fixed Price ( Milestone Based) as well as Hourly based Projects. The key skills which distinguishes me form other developers are given below. VC++/ATL/COM, Raspberry PI,Android, Device Driver, Video Streaming,DirectX, SNMP, Protocol Development, Plugin development, Plugin Frameworks, Artificial Intelligence,Video Analytics, Scientific and Engineering Software, Computer Interfacing software. RESUME ==================== => More than 14 years of commercial software development experience with exclusive focus on Client Server/ Networking/Graphics/Robotics Technology. => In-depth knowledge in developing softwares with tools and technologies like VC++, Unix/Linux C++, .NET , C#.NET, VB.NET, ASP.NET and Java.' TECHNICAL EXPERTISE ==================== => The key technical Architect behind the Shareware products, KTS InfoMate, VideoManager +, MoneyCare +, SalesMate +, KTS InfoMate, CampusMate + and other products (with Plug-in Support) developed with tools VC++, ADO, MFC and ATL => The key Architect behind the extensible Web Content Management and Backup system KTS webCloud developed with tools VC++,VC#.NET, ASP.NET and SQL Server. => Worked for fortune 500 companies and MNC clients like GE, HP, Fujitsu,Toshiba, Hitachi, ISO. End To End Software Products Development Experience ============================================ Digital Signage Management Software (Tools and Technologies VC++, COM, ActiveX, QT C++, C#.NET, Java, ASP.NET, Web Services, Android , Linux, Raspberry PI, Windows, SQL Server/ MySQL, MS Access, Cross Platform ) Personal Accounting Software (Tools and Technologies : VC++, MFC, ATL , COM) Point of sales Software (Tools and Technologies : VC++, MFC, ATL , COM) Web Content Management System Software Framework (Tools and Technologies : ASP.NET, C#.NET ) Time Table Creation Software (Tools and Technologies : VC++, MFC, ATL , COM) Video Rental Software (Tools and Technologies : VC++, MFC, ATL , COM) Campus Management Software: (Tools and Technologies : ASP.NET , MySQL) Software Skills: Software Product Engineering, VC++, ATL, COM, DCOM, MFC , ActiveX, DirectX, DirectShow, FFMPEG, FFDShow, Win 32, .NET, C#.NET, VB.NET, ASP.NET,ASP, AutoIT, Bugzilla, ISAPI, Boost, Device Driver, NDIS Driver, Printer Driver, ModBus TCP, ModBus Protocol, SNMP, CMIP, HTTP,SMTP, FTP, TFTP, HTTPS, RTSP, SAP, SIP, H 264, MP4, MPEG2, AVI, Video Streaming, Flash Streaming, RS 232, USB, Firewire, Image Processing, Packet Sniffer, Ethreal, Video Analytics, Object Tracking, Aforge.NET, Vehicle Identification, Medical Imaging, Optical Networking, Mathematics, Physics, Game Physics, Simulation, Scientific Software, Linux , Unix C++, ObjectStore, SQL Server, MySQL, MS Access, Web Services, SOAP, gSOAP, JSON, Compiler, Lex,Yac, ASM, Data Structure, Fiber Optics, Embedded System, Raspberry Pi, Plugins, Excel Plugins, Office Plugins, Word Plugins, Plugin Framework, PhotoShop Plugins, Photoshop SDK, 3DS Max Plugin, Intelligent Transportation Systems, New Port Stepper Motor, Galil Motion Controllers, CRO, EDBA, WDM, SONET, SDH, SEO, SEO Tools Development.

    Associated with: KTS InfoTech Pvt Ltd, KTS InfoTech Private Limited, Santhisoft Technologies

    $40.00 /hr
    994 hours
    4.97
  8. Luong Thanh Phu

    Luong Thanh Phu Agency Contractor

    Delphi,Web.NET, PHP, RoR, C/C++, Android, IOS, VoIp, OpenCV

    Vietnam - Last active: 8 days ago - Tests: 17 - Portfolio: 9

    - I am programmer with over 15 years experience work in area IT software, Web development and Security network (All platform OS Window/Linux/MacOSX) - I am strong coding with languages programming (C/C++, Objective C, Java, Delphi/Pascal, Php/Perl/Python/Ruby, Javascript/Applescript/Shell script, C#/VB.NET. - Delphi Programming: (Component, RemoteObject, Fastreport, Report Builder, Raise report, dbExpress, dataSnap, network, Firemonkey, crossplatform IOS, MacOSX, Window) - GIT/SVN in tracking and manage source code - Developing and using well with frameworks, opensource from .net, WinSDK, Linux SDK, IOS SDK, Social API(facebook, google, dropbox..etc), OpenCV, Forge, Image Processing, DSP, OCR, gstream, phonegap, - Web developement: Php, ruby, python, perl, NodeJS. Framework: joomla, wordpress, yii, Zend, drupal, SugarCRM, vTigerCRM,,,..etc. - Mobile/Smart device and Embedded development: Android, Linux Embedded, IOS, Window Mobile Embedded, Window Phone - IDE and tools programming(Visual Studio, Delphi IDE - all version, eclipse, Qt Creator, Netbean - Database programming: MS SQL(2000,2008, 2012), MySQL, MongoDB, NoSQL, BigData, postgreSQL, Firebird, Oracle - VoIP development: Asterisk, Softphone, WebRTC, Freeswitch, OpenSips, Elastix, FreePBX, A2Billing, XMPP, OpenFire, Call Center I joined to developing and completed many large project. i will show to you all previous my works.

    Groups: Bluehost Developers and Designers, Crossrider...

    Associated with: KPT

    $15.56 /hr
    4,646 hours
    4.73
  9. Chris Rivas

    Chris Rivas

    Hosting Industry Sr Linux Admin w/ RHCE, RHCVA, MySQL DBA, developer

    United States - Last active: 11/18/2014 - Tests: 7 - Portfolio: 1

    For more than ten years I have worked extensively in the software development and hosting industries. I am an expert Linux and Unix system engineer, and can deploy and configure any software stack that is based on Linux for optimal content delivery. I excel at MySQL database design, optimization, and administration. I am a seasoned software developer and have extensive experience with many languages including Java, Python, PHP and Ruby. I also have significant experience with customizing, deploying, and adminstering open source web applications, application frameworks, and application servers. I have worked locally, overseas, and with colleagues and clients overseas via the internet. If you look at my work history here, you will note that i 'disappeared' in February 2011. Indeed I did disappear, I was in a very bad car accident in Bangkok, Thailand, where I was living at the time, and was nto able to get out of bed or use a phone or computer for roughly a month. I now reside in Austin, TX again full-time I do not disappear typically, my present and previous employers can confirm that if you are hesitant based on feedback from 2011.

    $36.67 /hr
    22 hours
    4.54