OpenSIPS Freelancers

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, 3 OpenSIPS projects are completed every quarter on Upwork.


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 4.94.

Last updated: May 1, 2015

Popular OpenSIPS Searches

More options
Clear all filters
  1. r g

    r g

    Technical Architect Java, J2EE, SIP Web RTC

    United States - Last active: 03/10/2014 - Tests: 2

    Over the last 12 years, I have worked extensively on Java/J2ee projects for prestigious clients in telecom and banking domain My passion towards the designing, programming and coding, lead me to the Odesk , a platform where I can put my knowledge, experience, passion together and deliver my best in professional and timely manner My core expertise lies in : Java/J2ee LinkedIn, Highrise, Foursquare API Integration OAuth Intergration SIP WebRTC BigBluebutton red5, freeswitch, Big Blue Button Type safe stack (Play!, Akka, Cassandra) Twitter Bootstrap Weblogic / Websphere Web Solutions (JSP/Struts/Servlets/XML/Web Services/JavaScript/HTML5) Android Development Coding Standards and Best Practices

    $38.89 /hr
    282 hours
  2. Younas Y.

    Younas Y. Agency Contractor

    VoIP/Web Developer

    United Kingdom - Last active: 10/14/2013 - Tests: 1 - Portfolio: 5

    Seeking contracts/projects of VOIP Development with Web Enhancements. where I can use my technical competencies in web, networking and voice applications developing and improving the performance of the company. My skills are as follow. Skills: - AGI, AMI , CTI, PHP/MYSQL , CakePHP, Croogo, WordPress, Joomla, Open Cart. PBX:- Asterisk , FreePBX, TrixBOX, FreeSwitch, VoIPSwitch. Billing:- A2Billing, A2Billing Customization, A2Billing Integration, A2Billing Redesigning ,Custom Billing Solutions. IVR :- DTMF IVR, Voice Recognition IVR, Payment Gateway Integration with IVR, IVR Survey, IVR booking system and at any level of IVR development. SMS:- SMS Web Integration, 2way SMS. SMS integration with A2Billing, SMS integration with IVR. Web Development:- CakePHP, PHP - MySQL, Croogo, Wordpress, Joomla. Termination: SMS Termination , Call Termination using hypermedia Gateway, Eurotech Gateway ,etc. and Custom Built Gateway's. I have the ability to learn new technologies through the use of self-study materials and intuition. I pay close attention to details while performing technically detailed tasks.

    Associated with: VoxLeaf

    $40.00 /hr
    80 hours
  3. Faheem M.

    Faheem M.

    Asterisk ,OpenSIPS, FreePBX, VTigerCRM, Callcanter, Perl, Python, PHP

    Bahrain - Last active: 1 day ago - Tests: 3 - Portfolio: 3

    More then 7 years experience in the field of VoIP,and related technologies. Excellent development skills in OpenSIPS, Asterisk and FreePBX. I have worked in various VTiger CRM solutions in callcanters with VoIP integrated for call popups. Also I have developed various autodialer/Voice broadcaster solutions, predictive and progressive dialers. Skills: Asterisk/ OpenSIPS / Freeswitch / FreePBX / Elastix / A2Billing / PHP, Python, Perl, MySQL

    $11.11 /hr
    2 hours
  4. Igor Pavlov

    Igor Pavlov

    Russia - Last active: 2 months ago - 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. Vadim G.

    Vadim G. Agency Contractor


    Czech Republic - Last active: 11/15/2013 - 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
  6. Igor O.

    Igor O.

    VoIP and Linux Engineer

    Ukraine - Last active: 12 days ago - Tests: 5

    Hi. I'm a VoIP engineer, mostly using Asterisk and FreeSwitch. Later time have much expirience in OpenSIPS/Kamailio SIP Proxy family products. Also have a huge expirience in traditional telephony, also Video-Conferencing systems (Polycom, Tandberg). Excellence knowlege of SIP/H.323 and IP networking.

    $30.00 /hr
    37 hours
  7. Marek S.

    Marek S. Agency Contractor

    European system/VoIP administrator - Linux, VoIP, LAMP, Cisco, Amazon

    Slovakia - Last active: 05/26/2014 - Tests: 3

    After 15+ years in system administration, I can say, I can help with any problem you could have. I was implementing clusters (http, asterisks, opensips), design and install high available infrastructure, finding bottlenecks in applications including resolution, design, install and manage VoIP infrastructure with thousand of customers and mainly, bringing new ideas into life. Areas of knowledge: - Apache/HTTPD - installation, tuning, design of infrastructure - NGINX/HAPROXY - balancers, high availability infrastructure - PHP/MySQL - tuning for best throughtput - Asterisk - extensive administration for VoIP provider - Opensips - loadbalancing+high availability in voice services All this on Linux (Debian, CentOS, Ubuntu) and FreeBSD. - all type of clustering/virtualization - Xen, vmware etc. - all operations, scalability and high availability - Amazon/Rackspace - high available setups, hacks for automated deployment etc., about 50 instances under my management With all technologies, I was working with many companies, mainly from US and Canada. Everywhere, I was the person, on which main responsibility laid. My biggest advantage is, that I am working, until problem is not resolved - I am not blaming anybody, but working. Do you want to try it? Go ahead and drop me a line.

    Associated with: antaree Solutions, s.r.o

    $21.11 /hr
    4 hours