Freeswitch Freelancers

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Freeswitch Job Cost Overview

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

Upwork Freeswitch Jobs Completed Quarterly

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

5

Time to Complete Upwork Freeswitch Jobs

Time needed to complete a Freeswitch project on Upwork.

Average Freeswitch Freelancer Feedback Score

Freeswitch Upwork freelancers typically receive a client rating of 4.61.

4.61
Last updated: May 1, 2015

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  1. Duc To

    Duc To

    Extensive experience with VoIP, Desktop/Web/Mobile application

    Vietnam - Last active: 18 hours ago - Tests: 1 - Portfolio: 2

    Thank you for viewing my profile! I am a full stack engineer and joined many projects as leader/manager in 7 years. I have deep experiences in enterprise systems from desktop/web/mobile applications to VoIP / Network infrastructure. I can mange whole project from getting customer’s requirement, feature and technical designing, configuring and maintenance, optimization and improvement suggestion. With 8 outstanding projects (good feedback and short working time) only at oDesk and many more others, I am the most suitable candidate for following specific jobs: - Enterprise VoIP and network system with load balancing and high availability requirement - Enterprise desktop / web / mobile application I am looking for clients that are seeking experience and quality candidate

    $25.00 /hr
    0 hours
    4.87
  2. Kamran Rao

    Kamran Rao Agency Contractor

    Programmer, Web Developer, VoIP Expert (Freeswitch/Asterisk)

    Pakistan - Last active: 12/15/2014 - Tests: 27 - Portfolio: 5

    VoIP: freeswitch, asterisk, freepbx, fusionpbx, agi/ami programming Programming: perl, python, lua, bash Web development: html/css, wordpress, php, mysql Multimedia/Graphics: gimp, inkscape, audacity OS: Linux, Windows

    Groups: Bluehost Developers and Designers

    Associated with: Nethawk (Pvt) Limited

    $13.33 /hr
    115 hours
    5.00
  3. David Knell

    David Knell

    Senior telecoms developer/CTO

    United States - Last active: 4 months ago - Tests: 2

    I've been developing software commercially for more than a quarter of a century, both as an employee of large organisations (IBM) and, to a greater extent, as my own boss. I've built and sold two businesses along the way, learning a great deal from having done so. My focus has been on telecoms. I developed TDM IVR systems based around Aculab and Dialogic cards in the late 1990s, and have, more recently, been involved in developing IP solutions using Asterisk, Kamailio and FreeSWITCH. These have included an IP Centrex platform (Asterisk and SER), a carrier-grade softswitch (FreeSWITCH) and various IVR solutions (Kamailio and FreeSWITCH). I'm fluent in a number of languages, including C, PHP, Perl, C# and Javascript, am happy to develop on Windows or Linux and have been using Agile development methods - in particular, release early and often - since before the term Agile was coined. I'm experienced with managing small teams of developers, and understand the importance of delivering the agreed product on time and within budget.

    $75.00 /hr
    3 hours
    5.00
  4. Arsen S.

    Arsen S.

    VoIP Administration & Development

    Bulgaria - Last active: 18 hours ago - 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.

    $55.56 /hr
    126 hours
    5.00
  5. Virendra B.

    Virendra B. Agency Contractor

    VoIP Developer

    India - Last active: 1 month ago - Tests: 2 - Portfolio: 8

    I have 7 years of experience of Asterisk installation,configuration and making API with PHP for Asterisk. I have knowledge of SMS Gateway installation and configuration with mysql database. I have done FreeSwitch to make Billing application now. Expert in A2Billing and other VoIP Billing projects. Google TTS with DTMF is done by me.

    Associated with: voipforbusiness Agency

    $16.67 /hr
    36 hours
    4.96
  6. Luong Thanh Phu

    Luong Thanh Phu Agency Contractor

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

    Vietnam - Last active: 6 days ago - Tests: 17 - Portfolio: 9

    - I am programmer with over 15 years experience work in area IT software, Web development and Security network (All platform OS Window/Linux/MacOSX) - I am strong coding with languages programming (C/C++, Objective C, Java, Delphi/Pascal, Php/Perl/Python/Ruby, Javascript/Applescript/Shell script, C#/VB.NET. - Delphi Programming: (Component, RemoteObject, Fastreport, Report Builder, Raise report, dbExpress, dataSnap, network, Firemonkey, crossplatform IOS, MacOSX, Window) - GIT/SVN in tracking and manage source code - Developing and using well with frameworks, opensource from .net, WinSDK, Linux SDK, IOS SDK, Social API(facebook, google, dropbox..etc), OpenCV, Forge, Image Processing, DSP, OCR, gstream, phonegap, - Web developement: Php, ruby, python, perl, NodeJS. Framework: joomla, wordpress, yii, Zend, drupal, SugarCRM, vTigerCRM,,,..etc. - Mobile/Smart device and Embedded development: Android, Linux Embedded, IOS, Window Mobile Embedded, Window Phone - IDE and tools programming(Visual Studio, Delphi IDE - all version, eclipse, Qt Creator, Netbean - Database programming: MS SQL(2000,2008, 2012), MySQL, MongoDB, NoSQL, BigData, postgreSQL, Firebird, Oracle - VoIP development: Asterisk, Softphone, WebRTC, Freeswitch, OpenSips, Elastix, FreePBX, A2Billing, XMPP, OpenFire, Call Center I joined to developing and completed many large project. i will show to you all previous my works.

    Groups: Bluehost Developers and Designers, Crossrider...

    Associated with: KPT

    $15.56 /hr
    4,646 hours
    4.73
  7. Hank Huang

    Hank Huang Agency Contractor

    VoIP Consultant/Infrastructure Architect

    United States - Last active: 6 days ago - Tests: 2 - Portfolio: 3

    I am specialized in voice and data integration. Established monitoring platform for data centers with Nagios based tools. Integrate with graphs to collect historical metrics and application performances. Provide an easy to use interface for both the engineers and the infrastructure managers. I have experiences managing hundreds of Linux servers in large scale with a mixed environment of physical and virtual servers. Utilizing configuration management tools like Puppet, monitoring platform OMD (Nagios + Check_MK + Pnp4Nagios), and continues integration to ensure the highest quality service provided. List of my skills: DevOps Integration: Open Monitoring Distribution, Nagios, Check_MK, Puppet, Jenkins, Selenium WebDriver, PhantomJS, Sikuli automation VoIP: Asterisk, A2Billing, FreePBX, Trixbox, Elastix, PBX in a Flash, FreeSWITCH, Plivo, OpenSIPS, SwitchVox IP phones: Astra, Polycom, Linksys, Grandstream, Snom, Cisco, Yealink System Admin: RedHat Linux, CentOS Linux, Debian Linux, Ubuntu Linux, VPN, DNS, High Availability Open Source Server: Zimbra communication Suite, Redmine Project Management,Deki Wiki, OpenVZ virtualization, KVM virtualization Cloud Service: Amazon EC2, Amazon S3, VPS.NET, Linode, Racksapce, Digital Ocean

    Associated with: UniC Solution

    $55.56 /hr
    398 hours
    4.81
  8. Md Golam Rabbany

    Md Golam Rabbany

    Programmer,PHP,MySQL,AJAX, Jquery, C, C++, VoIP, FreeSwitch, Asterisk

    Bangladesh - Last active: 1 month ago - Tests: 2 - Portfolio: 4

    Over 10 years experience in Telecom (Prepaid/Postpaid Billing, Mediation, Rating, Switching, Routing, VAS, OCS, SMPP), Mediation Specialist, Programming (C/C++, PHP, JAVA, Perl, HTML, QT, AGI Script, Jquery etc), PHP Framework (coordinator, YII, Cake PHP, Joomla, Wordpress etc ) Database (MySQL, Oracle, MSSQL), Networking, Vendor Soft-Switch (Huwaie Softx3000, Telco Bridge, SanSay etc) and Open source application (Asterisk, Free Switch, A2billing, PBX Souction, Call Center Soluction, OpenSIP, E-Commerce etc). I have also great experience in Programming (PHP, MySQL, Oracle, C/C++, QT, J2ME, PHP, MySQL, HTML, AJAX, XML, KML, VXML,CGI, AGI Script, Java) I have done more than 1000 Web base projects which is more powerful application. Working Tools: C/C++, QT, J2ME, PHP, MySQL, HTML, AJAX, XML, KML, VXML,CGI, AGI Script, Asterisk, Free Switch, VOIP Switch, A2Billing, Open Source Telcom Billing application, open source CMS, Wordpress, Joomla, Dorpal, Linux/Win Server etc.

    $16.67 /hr
    0 hours
    5.00
  9. Sergey P.

    Sergey P.

    VoIP and Linux Engineer

    Russia - Last active: 2 days ago - 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 (over 7 year administration) PBX: Si2000 (v.5), Definity administration (SS7, ISDN) DB: mysql, postgresql Sec: DMVPN, IPsec, OpenVPN Publish: LaTeX

    $22.22 /hr
    74 hours
    5.00
  10. Albert M.

    Albert M.

    Asterisk, Voip, Mysql, Salesforce.com administrator and developer

    United States - Last active: 01/25/2014 - Tests: 1

    Linux servers, Linux Security, Linux Cluster set up and management, basic networking including cisco and vyatta softswitch, desktop support, Asterisk PBX / Freeswitch Developer, WebRTC and Java phone development, Salesforce.com administration and development, C, C++, Python, Perl, freeswitch, Dialplan programming, Agi scripting, building API’s, IVR development, CMS development, CRM Development SFDC, html 5, xml, php, Ajax, JavaScript, Jquery.

    $44.44 /hr
    3 hours
    5.00