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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, 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 4.87.

Last updated: October 1, 2015

Popular OpenSIPS Searches

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Tushar Jain

Tushar Jain

Voice & Data Consultant

Australia - Tests: 2

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

Thiago M.

Thiago M.

Java/Perl/ Linux/Voip/Asterisk/Opensips

Brazil - Tests: 1 - Portfolio: 1

Last 14 years I worked as Internet Provider admin, with linux and perl in Brazil. I worked for 2,5 years as Voip Engineer with asterisk, openser and opensips in Australia. Worked for 1,5 years in Japan with Flex, now, I'm back to my home in Brazil, with my family working with Flex and Java at my new company We make software ERP to manage money and accounting for business companies. At my free time I like to discovery things by programing, some times with stock markets, some times like now, looking for math formula for prime numbers. I'm looking for some freelance job to increase my incomming, Once I want to go again to japan in this 2013.

$27.78 /hr
418 hours

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

pankaj patra

pankaj patra

Technical Support Engineer, Manual Tester

India - Tests: 5

Technical Professional with 10+ years of IT experience in Client Server, LAN/WAN, Open Systems, Manual Testing and Enterprise Application Integration for hardware/software products. Quickly adaptable and able to multitask in the changing technical and Managerial atmospheres that are common in today marketplace. Highly motivated tech-support professional skilled in troubleshooting, analyzing and resolving complex technical problems, utilizing advanced resolution procedures.

$10.00 /hr
0 hours

Arsen S.

Arsen S.

VoIP Administration & Development

Bulgaria - 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.

100% Job Success
$55.56 /hr
199 hours

mohammad kamruzzaman

mohammad kamruzzaman Agency Contractor

FreeSWITCH Expert with Web development Experience

Bangladesh - Tests: 2 - Portfolio: 2

i am a full stack web developer and server administrator (FreeSWITCH) i have experiences on Django (python), Codeigniter (php), MongoDB, ElasticSearch, postgres, redis, rabbitMQ, celery, mysql, nodejs. you can hire me if you need to implement a distributed VoIP enabled service based on freeswitch/kamailio that is ready to scale. i am also doing newfies-dialer customization and maintenance for a long while. and also i will take projects like PBX, IVR, autodialer development. i have open source project customization experiences, for example, FusionPBX,Newifes-dialer,Astpp,vBilling,kazoo, Kannel

Groups: Twilio

Associated with: DT software house

91% Job Success
$44.00 /hr
3,101 hours

Luis Urrea

Luis Urrea

Telecom Engineer | VoIP Network Engineer | FreeSWITCH | Kazoo Expert

Costa Rica - Tests: 5

I am a Telecom Engineer and Network Administrator with extensive experience in designing, implementing and maintaining mission critical network based systems. I worked for Cisco TAC for a little over 4 years providing high level technical support for Cisco Systems customers worldwide, diagnosing and resolving complex issues in small and large scale converged VoIP networks. My years of experience with multidisciplinary groups, and diverse network based equipment, using debugging tools and lab simulations have consistently trained my analytical skills and given me the required background to understand how systems work and therefore be able to provide solid recommendations and identify solutions that meet customer's needs. I am passionate about developing robust, scalable, distributable and fault tolerant communication systems and applications using the Erlang programming language. Programming proficiency in Erlang and Ruby.

$50.00 /hr
130 hours

Aleksandr Ryzhov

Aleksandr Ryzhov

Software Engineer

Ukraine - Tests: 6 - Portfolio: 8

Design and implementation software for any kind of web applications with strong skills: php object oriented method for backend part (Symfony2 framework), database structure design for ORM, ODM like Doctrine2, RDBMS like PostgreSQL, MySQL, Document DB like MongoDB. A lot of experience in frontend software development on JavaScript with jQuery and Angular library. Use only Linux platform for development, prefer GIT as control version system. And more other skills in computer science like bash, perl scripts, java general purpose programming, VoIP technology and others. Clean code and self advance as higher target for me.

83% Job Success
$22.22 /hr
691 hours