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SIP Upwork freelancers typically receive a client rating of 4.47.

Last updated: October 1, 2015

Popular SIP Searches

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Sukesh Kumar

QA Engineer,Manual Testing,VOIP,SIP,SIPp,Pbx,

India - Tests: 2 - Portfolio: 1

A dedicated professional with around 5 years of experience in Telecommunication Industry (Product Testing) with strong combination of technical expertise , Customer focused, problem solving, and analytical skills. Experience in Protocols: VOIP,SIP,H323,RTP,SDP...etc Experience in configure: Asterisk PBX,Freeswitch Pbx,TekSip,3CX,Avaya CM/SM....etc Presently associated with Avaya India Pvt. Ltd, Pune as QA Engineer. Experience in manual testing for software applications, products and components. Deft in handling functionality testing, system testing, user acceptance testing and regression testing. Well versed with Regression Testing, Performance Testing, System Testing, Functional Testing and Interoperability Testing. Quality exposure in the quality processes of defect prevention, metrics collection and SLA management.

$16.67 /hr
18 hours

Isaac Thuku

Isaac Thuku

Isaac Thuku

Canada - Tests: 10 - Portfolio: 2

I am a self motivated professional always working towards providing excellent tailored solutions for each of my clients to meet and whenever possible exceed their requirements, within budget and deadline. I have wide experience in desktop application development, installation, troubleshooting, repair and customer/technical support for Windows based Operating Systems and application, data entry and Web design.

$5.56 /hr
5 hours

Chris Rivas

Chris Rivas

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

United States - 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

Milind Gandhi

Milind Gandhi

C/C++ Expert Developer

India - Tests: 3 - Portfolio: 1

Good experience on full life cycle of software development and active in the industry since August-2005. I have been working for reputed telecom companies since the beginning. I am super expert in C/C++ programming languages. Kindly look at my profile at internationally recognized Q&A website: Have mastered in writing elegant, clean, well documented and optimized code. Ubuntu-Eclipse-g++ is my primary dev environment. Also comfortable with MSVS. Can share my professional work history once contacted. You can utilize my expertize in various fields like programming, bug fixing, optimization and designing .

$26.00 /hr
270 hours

Yawar Hadi

Yawar Hadi

Voip, asterisk, perl scripting, freeradius, linux, mysql developer

Sweden - Tests: 3 - Portfolio: 3

From last two years i am working on asterisk, free radius and mysql.I developed a full voip application which consist of * Calling Card Application * Soft phone to PSTN calls * DID to Soft Phone * DID to Forwarded no. * SIP to SIP calls * Call routing besides these i add the asterisk realtime functionality using mysql database and for billing i use the free radius server. So my core competencies are asterisk, perl, python, free radius, mysql DB and working on linux plat form.

$8.89 /hr
75 hours

Ali N.

Ali N.

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

Sweden - 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

Yasir Star

Yasir Star

Network/System/PBX Engineer

Pakistan - Tests: 2 - Portfolio: 5

I am Telecommunication Engineer. I have 04 years and 10 months experience in EPABX, IP Networking, IT, Telecommunication, SDH, IP Telephony, GSM, Optical Fiber Transmission. I also have experience in following areas: Computer Hardware/Software, Online Technical Support, Phone Support. I am Certified Engineer From Cisco and Alcatel-Lucent. I can work with Technical/Non-Technical Challenges. I can provide Online Support for given Task.

$8.00 /hr
4 hours

Junaid Rehmat

Junaid Rehmat Agency Contractor

Experienced C/C++/Objective C Developer/iPhone Application Developer

Pakistan - Tests: 3 - Portfolio: 5

Over the last 4 years, I have developed a wide range of projects using C, C++, Objective C, and Java. My core competency lies in iPhone Application Development. I have developed more than 15 major applications, including VOIP applications, social networking apps, drawing apps and/or a few apps with custom UI and self management features. I have hands on experience in iOS Application Development. I have developed many live applications. - Expertise in iOS (6.x, 5.x, 4.x) - Expertise in xCode (4.x, 3.x) - Expertise in VOIP applications using PJSIP and Doubango. - Expertise in XMPP Framework. - Expertise in Facebook, Twitter and LinkedIn APIs - UIKit Framework - UIMapKit Framework - Addressbook Framework - QuartzCore Framework - CoreAnimation Framework - AudioPlayer/MoviePlayer Frameworks - Client‐Server communication - Database designing using SQLite - PDF document reading - Inapp Purchase integration - MessageUI and MailUI Frameworks - JSON and XML Parsing. - Using GET, POST and SOAP web services. - Using Gesture Recognizer and UITouch controls. - Customizing User Interface.

Associated with: AgileOne

100% Job Success
$20.00 /hr
1,512 hours