Browse OpenSIPS job posts for project examples or post your job on Upwork for free!

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.

5

Time to Complete Upwork OpenSIPS Jobs

Time needed to complete a OpenSIPS project on Upwork.

Average OpenSIPS Freelancer Feedback Score

OpenSIPS Upwork freelancers typically receive a client rating of 4.85.

4.85
Last updated: August 1, 2015

Popular OpenSIPS Searches

Clear all filters
  1. Abdelghafour H.

    Abdelghafour H. Agency Contractor

    Network and Software developer

    Morocco - 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
    1,226 hours
    5.00
  2. Sergey P.

    Sergey P.

    VoIP and Linux Engineer

    Russia - Tests: 5

    OS: linux (gentoo, debian, centos ...), FreeBSD over 10 years using/administration Lang: perl, lua, shell (java, ruby, erlang studying) VoIP: asterisk, freeswitch, gnugk, kamailio/ser (over 7 year administration) PBX: Si2000 (v.5), Definity administration (SS7, ISDN) DB: mysql, postgresql Sec: DMVPN, IPsec, OpenVPN Publish: LaTeX

    $22.22 /hr
    76 hours
    5.00
  3. Igor Pavlov

    Igor Pavlov

    Russia - Tests: 3

    Hi, My name is Igor Pavlov. I am working with VoIP technologies since 2008. From 2013, I'm partially working in cloud PBX project (developing core based on OpenSIPS with load-balancing between asterisks). I have a Bachelors in Radio Engineering from Izhevsk State Technical University, in Russia. Listed below are my experience and skills: - Kamailio/OpenSIPS: rtpproxy, dispatcher, dialog, htable, auth_db; - Asterisk: AGI (php, bash), AEL, AMI, CDR, DB (MySQL), faxes (fax2mail), IVR, SIP/IAX/E1(EDSS), dahdi; - GUI: FreePBX, Trixbox, Elastix; - OS: Debian, CentOS; - Linux Administration: firewall, routing, vpn; - Cisco Switches and Routers configuration (CCNA level); Thank you in advance for your time and consideration.

    $20.00 /hr
    9 hours
    5.00
  4. Nguyen Tran Nhan

    Nguyen Tran Nhan Agency Contractor

    senior developer c/c++, android embeded, linux kernel.

    Vietnam - Tests: 4 - Portfolio: 1

    With more than 5 years working experience in Software Development and most of the time working with C,C++ technologies, I have gained a certain professionalism level as a Senior C,C++ Developer: • Intensive programming experience using STL: container, algorithm, iterator, smartpointer. BOOST: regex, filesystem, boost::bind, boost::datetime, QT, GTK, … • Strong skill set and experience using open sources frameworks: STLport, Xerces, Santuario, CryptoPP, Xalan, CURL, Pjsip, OpenMGCP, Quagga, OPENSNMP, • Good skills and experience in protocol and reading RFC like, SIP, MGCP, RTP, RTCP, XMPP, SNMP, … • Good skills and experience in programming with posix, multithreading, mutex, condition variable, thread barrier, … • Good skills with programming in linux kernel. Development linux module, netfilter, … • Good skills and experience in system analysis, system designing and performance tuning • Strong skill set and experience using development tools: VIM, ctags, cscope, VISUAL STUDIO, Eclipse, Makefile • Strong skill in VOIP, SIP, XMPP, MGCP, jabberd2, MEGACO, • Good experience with native SDK Blackberry, Native SDK Android. • Good experience in working and managing application and web servers: Apache, Tomcat. Experience in developing Apache module. • Good experience in working with databases: Oracle, MS SQL, My SQL, SQLITE

    Associated with: nccsoft

    $16.67 /hr
    574 hours
    2.84
  5. Luong T.

    Luong T. Agency Contractor

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

    Vietnam - Tests: 17 - Portfolio: 9

    - I am an engineer IT Programmer with over 15+ years experience program and develop, fluently language programmer (Pascal, C/C++, Object C, Php, C#, Java, Perl, Php, Web Application, Network Programming, HTML/HTML5,XML,CSS,Javascript, Jquery, jquery plugin, - Opensource wordpress, joomla, drupal, OpenCart, Xcart, eShop, Web.Net,, ..etc) and use well IDE (Eclipse, Visual Studio 2008/2010/2012/2013/2015, Nokia Qt develop, Vim, Netbean, IntelliJ IDEA, Xcode) to develop application the fast and best. - My skill is coding, good thinking algorithm, process flowcode and my knowledge about IT area very good to support for working. I can do and understand clearly many OS(Window, Window Phone, IOS, Linux, Android, Linux Kernel, Linux Embedded, Window Mobile, Image/Video processing, VoIP, OpenCV) and Database System(MS SQL 2000/2005/2008/2012, PostgreSQL,MySQL, MongDB, FireBird, foxpro, IBM DB, Oracle, No SQL - I also joined to design/work and completed many large project with position team leader, coder). Please contact me i will show to you all previous my works. - Reading and understand new technology very quickly and apply to work well.

    Groups: Bluehost Developers and Designers, Crossrider...

    Associated with: KPT

    $17.22 /hr
    4,646 hours
    4.73
  6. Vadim G.

    Vadim G. Agency Contractor

    LINUX/RHEL/CENTOS/AWS/RHEV/NETWORK/VOIP/RHCA/RHCSS

    Czech Republic - Tests: 8 - Portfolio: 1

    -More than 8 years of Linux administration experience -Proficient knowledge of RHEL / CenOS -Experience with Amazon Web Services. -Experience working with RHEV-M/H -Able to design and implement a large variety of services. -RHCS based clustering. -High troubleshooting skills. -Certified RHCA, RHCE, RHCSS and RHCDS

    Associated with: Cassiopeia, EaseIT

    $22.22 /hr
    14 hours
    5.00
  7. Priya J. Agency Contractor

    Expert iPhone and Android Developer

    India - Tests: 5 - Portfolio: 13

    Have a strong knowledge in Objective-C, Swift, C and C++. Responsible, self-motivated, have ability to work in a team, within tight deadlines and under pressure. Always interested in learning new technologies and improving my programming skills. I'm working in a company of professional iOS designer, so if your project requires a graphics and constructing the UI, you may be interested in his services too. I have all needed equipment and devices for effective testing and debugging, such as iPhone 4S, iPhone 5S, iPhone 6+, iPad 2, iPad Air. We follow: Methodical Production Facility Strong Team with good communication Cost effective solutions Company grown strong over a period of time More than 80% business that we do are from our repeat clients.

    Associated with: Apptech Mobile

    $14.00 /hr
    178 hours
    1.02
  8. Igor Gamayunov

    Igor Gamayunov

    Software Architect and Developer

    Canada - Tests: 1

    I have been developing Asterisk based telephony systems for more then 8 years and have very extensive, more than 18 years, Linux development experience. I have provided Asterisk and OpenSIPS cloud based solutions that comprise both back and front-end components and include complex dial-plans, IVRs and AGI scripts, in the following areas: - Hosted PBX applications - Conference bridge applications - Call Center applications - Intelligent Telephony load and stress test applications - Asterisk ARI - Asterisk WebRTC - REST API, OAuth 2.0 I have designed and developed Asterisk based Call Center system that is running on the AWS EC2 instances. This system is successfully integrated with the following platforms: - Proprietary CRMs - vTiger - Bigcommerce - Shopify - Nation Builder - NGP VAN I have very extensive customer support experience and good at writing user guides and developer API documentations. In addition I have a Project Management certificate.

    $38.89 /hr
    640 hours
    5.00
  9. Muhammad F.

    Muhammad F.

    Asterisk ,OpenSIPS, FreePBX, VTigerCRM, Kannel, Perl, Python, PHP,XMPP

    Pakistan - Tests: 3 - Portfolio: 3

    Over seven years of experience in designing complex telephony Systems using Asterisk, OpenSIPS and FreeSWITCH. - Implementation of OpenSIPS/Asterisk/Radius based telephony systems. - Implementation of various contact center solutions. - Google's Speech Recognition: text2voice and voice2text - vTigerCRM and Asterisk integration for callpopups. - Predictive dialer and progressive dialer. - Configuration of various TDM Gateways. - iOS/Android push messaging integration with OpenSIPS. - Realtime Rate web service for SIP Clients. Key Skills. Asterisk, OpenSIPS, FreeSWITCH, Kannel, FreePBX, Elastix, Genbend SIP Server, FreeRadius, Openfire XMPP. Perl, Python, PHP, Symfony

    $11.11 /hr
    13 hours
    5.00