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OpenSIPS Job Cost Overview

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

Upwork OpenSIPS Jobs Completed Quarterly

On average, 5 OpenSIPS projects are completed every quarter on Upwork.


Time to Complete Upwork OpenSIPS Jobs

Time needed to complete a OpenSIPS project on Upwork.

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OpenSIPS Upwork freelancers typically receive a client rating of 4.85.

Last updated: August 1, 2015

Popular OpenSIPS Searches

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  1. Tushar Jain

    Tushar Jain

    Voice & Data Consultant

    Australia - Tests: 3

    Tushar is a seasoned professional with 11+ years of experience in managing network operations in a service provider / NOC environment. Experienced & Skilled in Telecoms, MPLS, BGP, VoIP, SIP, Network Support and Managed Services, Remote Network Monitoring, Networking Services, Carrier Services , Telephony Services, IT Managed Network Services, Remote NOC Support. With an In depth design, implementation and support experience in Integrated network management system, Prepaid billing system, Switching, VOIP & Telephony services, SIP Trunking and many more areas, he brings with him a wide experience and has proven to be of great value to all the organizations and clients he has worked for.

    $22.22 /hr
    0 hours
  2. Rahul Pathak

    Rahul Pathak Agency Contractor

    C, C++, WebRTC Mobile, VoIP developer.

    India - Tests: 1 - Portfolio: 8

    I have around 5 years of experience in VoIP domain. I am working on WebRTC stack from last 1.5 years. I am working on VoIP library for IOS, Android and Windows on C,C++. I had experience in developing VoIP clients and servers. I made 4 of VoIP clients and 1 B2BUA server. 2 are on IOS. And 1 on the Web using SIP and WebRTC. 1 on Phonegap for Android and IOS. I had lots of experience SIP, RTP, RTCP, SRTP, HTTP, WS, NAT, LTE, XMPP. And C, C++, Objective C, JNI, JAVA and more.. I have very much of experience in Asterisk and freeswitch PBX. I have also experienced in the B2BUA proxy server.

    Associated with: rbapptech

    $33.33 /hr
    0 hours
  3. Christian Benke

    Christian Benke

    Experienced VoIP Developer


    I am an austrian schooled engineer with 10 years of experience in open source based VoIP-solutions and Linux system administration. My speciality lies in building telephony platforms from the ground up, having provided clients with turn-key platforms for SMBs, VAS-solutions as well as high availability SIP-trunk systems. Additionally to this specialization in voice-over-ip, my broad knowledge and experience in the fields of Linux administration, networks and webdevelopment help to keep an birds-eye view on projects and to find creative and integrated solutions beyond the assigned tasks.

    $66.67 /hr
    0 hours
  4. Marcin M.

    Marcin M.

    VoIP developer


    9+ years of professional experience in VoIP and telecommunication includes in-depth knowledge of Asterisk PBX, Freeswitch, Kamailio/OpenSIPS. Main skills is design and deploy multitennant load balanced VoIP systems with failover include realtime prepaid billing system. Other already done projects such like: - Conference servers (Asterisk,Freeswitch) - web based billing system - postpaid,prepaid (A2billing - Asterisk) - realtime prepaid systems (Freeswitch + Cgrates) - web based voice broadcast system (autodialer) - SS7 gateways (Asterisk,chan_ss7) - web based fax broadcast system (t.38, HylaFax) - web based sms broadcast system (Kannel) - Fax2Email system - Skype gateway (Asterisk) - SMS gateway (2N Stargate) - web based campaign system with agents interact (call/contact center) - FreePBX / Elastix configuration

    $30.00 /hr
    407 hours
  5. Dave Bouchard

    Dave Bouchard

    Software Engineer

    Japan - Tests: 5

    Enthusiastic developer with 5+ years' experience in Java, C/C++, Objective-C/Swift, Python, PHP and VoIP technologies, I am very passionate about learning new technology. I would describe myself as a curious person and a fast learner. I am always willing to undertake a new challenge. I focus primarily on proactively identifying and addressing your needs in a professional and flexible manner. I also believe in the importance of building a strong relationship of trust and respect between us.

    $17.00 /hr
    0 hours
  6. Hemang Patel

    VOIP/Linux Expert (Asterisk,FreeSwitch,Kamailio,Opensips,MySQL,PHP)


    During the last 4 years, I developed a wide range of IT solutions including VoIP and Web Technologies. I have experience in Asterisk, FreeSwitch, Kamailio, Opensips, MySQL, PHP, Javascript, Jquery, Html, Css, WordPress etc. I am here to provide you complete IT solutions for VoIP and web technologies.

    $10.00 /hr
    0 hours
  7. Lorenzo Muscariello

    Lorenzo Muscariello

    Senior Software Engineer

    Italy - Tests: 3

    I currently work on Linux based Home Automation and ToIP Appliances. My experience ranges from JAVA/PHP/C applications design and development to Networking and Telecommunication systems design/development and operations management. I've spent about 5 years of my working time designing and implementing Asterisk and OpenSIPS based ToIP solutions for a wide spectrum of scenarios from SOHO to VoIP Carriers ( and Call Centers of different scales. I've also written a lot of customized AGI applications (JAVA, PHP, BASH, PERL) to deliver specific services or to integrate with customers' CRMs or other kinds of Enterprise Systems.

    $38.89 /hr
    0 hours
  8. Rai Icasiano

    Rai Icasiano

    Frontend and Backend Developer


    Currently leading a team of developers Trained developers to enable them to handle web projects Lead and implemented SCRUM methodology for the team Handled web-based projects as well as Pragmatic RESTful API design and implementation Have been an instructor for 1 semester on Web Programming Concepts Experienced in the following languages/technologies: Backend - VOIP(openSIPS for load-balancing, Asterisk for PBX) - PHP - Perl - Node Frontend - HTML - CSS - Javascript - Jquery - Angular Testing Tools: - Apache Benchmark(load) - JMeter(load and endpoint testing) - PHPUnit Others: - Linux-based platform: Debian/Red-Hat - Web Server Deployment and configuration: - Apache - Nginx - SSL - SSI - Databases - MySQL - Postgres - MongoDB - Deployment of Gitlab - Google Analytics - Deployment - Event Tracking - Goal Flows - Security: - Signed Requests implementation - OAUTH 2.0 implementation

    $11.11 /hr
    0 hours
  9. Beenish Saleemi

    Beenish Saleemi

    VoIP/IMS ,BPM/, RIA Application Developer

    Pakistan - Tests: 7 - Portfolio: 2

    I am a professional services provider, I have expertise in BPM based enterprise web2.0 solutions. My expertise varies from small enterprise products design to most scalable highly available solutions. having past 7 year experience in enterprise wide products, developing solutions and as a architect level performance.I have good grip for designing advance technology solutions for complex problems. Also have expertise in Java,.net C#, Perl, PHP and javascript and have experience in following protocols: SIP, Diameter, RADIUS, XMPP. industry standard BPMN2.0. I can add up enterprise level solutions to product to add in latest solutions. Opensouce projects : JBPM, JBOSS FUSE, Mobicents Jainslee, Asterisk, opensips, freeradius, Kurento WebRTC server, openfire etc. I can offer the services from small project to enterprise level project.

    $10.00 /hr
    1 hours