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, 9 Freeswitch projects are completed every quarter on Upwork.

9

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 4.53.

4.53
Last updated: July 1, 2015

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  1. Dmitry Sytchev

    Dmitry Sytchev

    Asterisk/Freeswitch/Kamalio expert, VoIP engineer, Linux administrator

    Russia - Last active: 8 days ago - Tests: 7 - Portfolio: 1

    I have more than 10 years of experience in installation and support of carrier-grade VoIP services based on Asterisk, OpenSIPS, Kamailio, Freeswitch and proprietary SIP/VoIP software. My professional interests are Callcenters, automated dialer systems and integration of VoIP software with company information flows. You can rely on my strong engineering and programming skills for projects starting from single VoIP server to a complete wholesale/carrier VoIP solutions including billing, call data analysis, security and fraud prevention. I have developed complete SIP solutions for VoIP carriers worldwide: Proxy/Registrars, IVR, prepaid systems, multi-tenant VoIP switches, hardware PSTN gateways (Cisco AS5300/5500, Audiocodes Mediant 2000, Quintum Tenor). I have experience in setup, administration and security of Asterisk, FreePBX, Elastix and FreeSWITCH PBX installations. As a programmer I use PHP, Javascript (both client-side using jQuery and Angular.js and server-side with node.js), Perl (system scripts/applications, Mojolicious webapps). I also have experience in development and administration of MySQL and Microsoft SQL Server databases. I'm experienced network engineer, skilled in routing and switching, general network architecture planning and deployment, network monitoring and security, including HA solutions (heartbeat/pacemaker). I use Zabbix and have some experience with Nagios and other monitoring software. I can also offer you consulting support in VoIP and network technologies.

    $33.33 /hr
    93 hours
    4.96
  2. Roman Yerin

    Roman Yerin Agency Contractor

    Web and VoIP(FreeSWITCH, WebRTC) engineer

    Russia - Last active: 3 days ago - Tests: 4 - Portfolio: 2

    I'm a skilled software developer and VoIP engineer with more than 15 years of experience. I'm also a full-stack developer of the convergent systems of voip and web. Playing with Freeswitch, Kazoo, SipXecs, Ruby, Perl, JS(node.js), C/C++ and much, much more - I'm always choosing tools for the task. Probably the most important thing which differs me from others - I'm never working just to gain money. I'm always doing my best to reach your goal the fastest way possible. If you've chosen a non-optimal solution I'll correct it and suggest a more efficient way. I'm never promising something that you're probably expecting to hear instead of the realistic estimate of your project. I'm never lying to my clients and I'm always giving all the information I have - transparently and on a regular basis. In one word - you can trust me as you trust yourself.

    Associated with: Coderunes

    $45.00 /hr
    505 hours
    4.91
  3. mohammad kamruzzaman

    mohammad kamruzzaman Agency Contractor

    Full stack web developer and VoIP Engineer, FreeSWITCH, ASTPP,Kamailio

    Bangladesh - Last active: 1 day ago - Tests: 1 - 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

    $44.00 /hr
    2,695 hours
    4.65
  4. Gohar A.

    Gohar A.

    VoIP Consultant [Asterisk, freeSWITCH, Kamailio, OpenSIPs, Vyatta]

    Canada - Last active: 3 months ago - Tests: 3 - Portfolio: 15

    Since last 7 years now I'm involved intensely in end-to-end VoIP setups. That included pre-deployment 360 degree Architecture planning. Actual development of the projects, including aiding other teams develop the exact required component for the projects. And after deployment Support. My career objectives are to be a very flexible expert capable of working on almost any layer. Come up with intelligent solutions to help achieve business goals smartly. I'm proficient in following domains * VoIP * Server Administration * Network Administration I've experience in Following tools. * Asterisk * FreeSwitch * OpenSIPs * Kamailio * SEMS * Vyatta * MySQL * Linux OSs I've worked in following languages. * C++ * Perl * Php * Shell scripting Find More about Me from my VoIP Blog: http://saevolgo.blogspot.com

    $60.00 /hr
    152 hours
    4.99
  5. Ambika P.

    Ambika P.

    VoIP,SIP,Asterisk,FreeSwitch,Opensips,Kamailio, Linux,MySQL,PHP,Apache

    India - Last active: 2 days ago - Tests: 6 - Portfolio: 3

    Over the last 4.5 years, I have developed a wide range of IT solutions including VoIP, Web and Mobile development for small businesses and startup companies as well as for large companies. I have experience in VoIP, FreeSwitch, Opensips, Kamailio, Asterisk, ASTPP, FreePBX, A2billing, Linux, Opensource Consulting, MySQL, PHP, Wordpress, MySQL, Android etc. I have developed Click to call, Class4 & Class5 Soft Switches, SIP Proxy Server, SIP Redirect Server, SIP Load Balance & Fail-Over, IVR Application, Fax over IP (FoIP), T38 Supported FAX Server, FAX to Email, Shoutcast Server, SIP Messaging Server, High scalable Least Cost Routing(LCR) with Fail-Over, Session Border Controller(SBC), RESTfull API , Web Services for Mobile Application, Web Applications, Mobile Applications. My core competency lies in complete end to end IT solutions for VoIP, Web and Mobile technologies.

    $25.00 /hr
    1,516 hours
    4.60
  6. Luis Urrea

    Luis Urrea

    Telecom Engineer | VoIP Network Engineer | FreeSWITCH developer

    Costa Rica - Last active: 08/19/2013 - 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.

    $38.89 /hr
    130 hours
    5.00
  7. Yuriy N.

    Yuriy N. Agency Contractor

    Freeswitch/Asterisk/OpenSIPS/Kamailio/Linux/Network/VoIP Enthusiast

    Russia - Last active: 09/05/2014 - Tests: 1 - Portfolio: 1

    Telecom Software and Network Engineer more than 6th years in companies - communication providers. I have extensive experience with deploying a complete infrastructure of voip provider, using OpenSource telephony technologies such as freeswitch, asterisk, OpenSIPS\Kamailio, kazoo, etc. Mostly I'm dealing with emerging startups or with small but accomplished voip companies which want to improve\reorganize their infrastructure; create something new or fix some issue on their network. So it is main area but sure I can help with other projects that correspond to my list of skills.

    Associated with: Nasida

    $40.00 /hr
    1,118 hours
    4.97
  8. Arsen S.

    Arsen S.

    VoIP Administration & Development

    Bulgaria - Last active: 4 days 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
    164 hours
    5.00
  9. Kirill P.

    Kirill P.

    Asterisk Expert and System Administrator

    Russia - Last active: 1 month ago - Tests: 10

    I work on IT more than 12 years. VOIP/Asterisk Developer, Expert System Administrator and Network Administrator, Perl Programmer. Generally, I develop solutions based on Asterisk and speech technologies (speech synthesis and speech recognition systems), complex IVRs, integration with external sources and databases, custom click-to-call and callback systems, etc. I prefer custom development for Asterisk and FreeSWITCH. Usually, I use Perl for development. I have huge experience in solutions based on Asterisk such as FreePBX, Elastix, Trixbox, vicidial, etc. Also I support critical 24x7 systems, administration networks and servers, perform IT consulting, etc.

    $25.00 /hr
    10 hours
    5.00
  10. 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