Asterisk Consultants & Developers

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Hire a skilled freelance Asterisk developer to build multi-protocol, real-time communications applications solutions for all your needs. Experienced Asterisk contractors can set up predictive dialers, call centers, VoIP gateways, conference servers, IP PBX systems and other applications.

Asterisk is a popular open source framework for building communications applications. The platform uses scripting languages to create business phone systems, conference bridges and other communications protocols and technologies. On Upwork, the world’s largest online workplace, companies hire Asterisk experts to handle all their communication needs.

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

Asterisk Job Cost Overview

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

Upwork Asterisk Jobs Completed Quarterly

On average, 55 Asterisk projects are completed every quarter on Upwork.

55

Time to Complete Upwork Asterisk Jobs

Time needed to complete a Asterisk project on Upwork.

Average Asterisk Freelancer Feedback Score

Asterisk Upwork freelancers typically receive a client rating of 4.55.

4.55
Last updated: July 1, 2015
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  1. Carlos Enrique Arango Patino

    Carlos Enrique Arango Patino

    System and Telecomunication Engineer

    Colombia - Last active: 17 hours ago - Tests: 1

    Knowledge and experience like sysadmin and management GNU/Linux servers, networking, web hosting, DNS and firewall. Knows programming language: JAVA, PHP, Visual Basic. Database like MySQL and CMS like: Joomla and Wordpress Has experience with teaching and conference presentation. Intermediate language concepts with English and Signal Language.

    $16.67 /hr
    2,333 hours
    0.00
  2. Aleksandr Nazaryan

    Aleksandr Nazaryan

    System Administrator (Google Apps, VoIP, Network, Windows)

    Armenia - Last active: 08/10/2014 - Tests: 8 - Portfolio: 3

    Long experience with various IT systems deployment and support since 1997. Deployment of new IT technologies in Banking and Educational spheres. Experience includes: - Asterisk based IP PBXes (600 extensions) deployment and support in university campus buildings - Google Apps deployment and support for university staff and students - Active Directory and Group Policies deployment and administration - SCCM administration of over 300 desktops - Windows File & Print services deployment and administration - Lotus Domino / Lotus Notes deployment and administration LinkedIn profile - http://www.linkedin.com/pub/alexander-nazarian/8/957/999

    $14.00 /hr
    0 hours
    0.00
  3. Andrey Astashov

    Andrey Astashov

    Linux System/Network Administrator (over 10 years of experience)

    Russia - Last active: 5 months ago - Tests: 3

    I experienced administrator servers running Linux. More than 10 years I have been working on setting up and maintenance of servers for different services. My skills: VoIP, Linux administrator, PHP, Perl, Shell scripting, DBA MySQL, TAS, NAT, Proxy, Firewall. My team of 4 people in the workplace supports more than 400 servers to Linux OS. I will help you! More information about the acquired skills: * VoIP (Asterisk, Freeswitch, Dlink, etc.) - more than 7 years * Linux (Debian, Ubuntu, OpenSuse) - more than 8 years * Windows Server - more than 4 years * PHP, Perl - more than 7 years * DBA MySQL - more than 10 years * Shell scripting - more than 10 years * Traffic Accounting System, NAT, Proxy, Firewall - more than 10 years * Mail Server Implementation - more than 3 years * Installation Service and Help Desc system - more than 5 years p.s.: Nothing is impossible for a person who has a desire to do everything ...

    $20.00 /hr
    0 hours
    0.00
  4. Brian S.

    Brian S. Agency Contractor

    ASP.Net/PHP/AJAX/C#/J2ME/MS SQL/MySQL/Win Mobile/Blackberry

    United States - Last active: 08/25/2008 - Tests: 6

    Cenon Solutions has a diversified staff with 10 years of experience creating advanced desktop, server, mobile, web, database, and server solutions for small and large companies. Our objective is to provide quality end-to-end solutions and create lasting partnerships by providing superior customer service and competitive pricing. The solutions in our portfolio include: * Advanced Web Portals using C#, VB, PHP, JavaScript, AJAX, Google Maps, Microsoft MapPoint, Google Search, SQL Server, MySQL, IIS, Apache, SharePoint Server, DotNetNuke, and Joomla. * Mobile Applications for Blackberry, Windows Mobile Pocket PC and Windows Smartphone using Java, embedded VB, C++, C#, SQL CE, and SQL Server Mobile * Database applications using Oracle, MySQL, SQL Server 2000/20005 with Integration Services, Analysis Service, and Reporting Services * Server Application using MSMQ, Web Sphere MQ, Web Services, FTP, Sockets, .Net Remoting, and BizTalk Server * Travel Applications using Sabre Web Services, Sabre SDS, Apollo Web Services, and MySabre API

    Associated with: Cenon Solutions

    $83.33 /hr
    0 hours
    0.00
  5. Neeraj Chand

    Neeraj Chand

    Asterisk/ VOIP/Video Conferencing Solutions Consultant

    Fiji - Last active: 19 days ago - Tests: 3 - Portfolio: 1

    Solutions architect and project manager with a strong focus on VOIP and voice driven applications including IVRs,pabx systems, and call center integration leveraging open source and closed source technologies to implement customised solutions. Flair for systems analysis and design with advanced communication and people skills. Specialties: Linux / Unix - Advanced Asterisk - Advanced VOIP - sip/iax -advanced Windows XP / Server - advanced Windows 7 - Intermediate Cisco routing/switches - advanced MSSQL - Intermediate MySQL - advanced Predictive Dialer systems - Advanced Excel - advanced c # - advanced Procurement / professional communication - advanced perl - intermediate Genesys Call Center Systems - Advanced Avaya - intermediate Current Roles / Achievements Responsible for all Voice / VOIP infrastructure across the OCIS group. Enhanced call handling efficiency by approximately 40% - via software upgrades and enhanced configuration. Developed enhancements to integrate with line of business systems and provide visibility on call patterns through visual tools. Added web based video conferencing, screen share and web chat to the portfolio of services available to all OCIS business users. Integrating Polycom auto provisioning systems with voice solution to make service delivery more robust and efficient. Currently developing intelligent routing systems for VOIP using EIGRP on cisco core devices. Integrating DUNDi, database functions, static variables from MySQL clusters with a self healing voip routing solution as the end goal

    $50.00 /hr
    0 hours
    0.00
  6. Jamal H.

    Jamal H.

    Programmer /VoIP-IP-PBX & Linux Expert/Computer Networks & Security

    Malaysia - Last active: 17 days ago - Tests: 1 - Portfolio: 3

    I have expertise in various programming and networking platforms. My VoIP Expertise are as following: VoIP: -SIP/H.323/SS7/TDM -Genband Nextone - Expert -Sonus and NBS Solution - Expert -MVTS Pro and MVTS II - Expert -Acme Packet - Sound proficiency -Asterisk PBX: Full proficiency -Strong knowledge of SIP protocol and SIP routers/proxy servers/SS7 -OpenSER (Kamailio/OpenSips) -Load Balancing, Least Cost Routing, High Availability, NAT Traversal, Rate and billing systems, etc. -IVRs/Auto Attendant Development. -Wireshark - Expert Cisco Routing and Switching technologies. Centos/Fedora/Red Hat Enterprise Linux Various Billing 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) - vBilling (billing for Freeswitch) My Programming expertise are as following: -Web Applications Development in PHP and ASP.NET MVC5 -Desktop Applications in Java, C#.net (Windows Presentation Foundation) -Mobile Applications in Android -Database design in My-Sql and MS-Sql A research oriented mind, with strong problem solving skills. An avid reader, who loves to write about his area of interest (VoIP/Programming) and new emerging technologies in the field of Communications and Software designing.

    $20.00 /hr
    0 hours
    0.00
  7. Thiago Winkler

    Thiago Winkler

    Project Manager / Scrum Master / JIRA Expert / VOIP Expert

    Brazil - Last active: 06/13/2012 - Tests: 1

    Experienced IT professional with international knowledge leading local and distributed teams of software developers, analysts and testers. Professional with technical background in Computer Science. Managerial skills are focused in continuous process improvement, project management and Agile methodology. For last 2 years I've been working with JIRA and Atlassian products, coordinating teams of developers and providing assistance to clients to configure, customize and maintain yours JIRA's environments. I have a lot of experience (3 years) with VOIP PABX softwares (like Asterisk) and complex VOIP environments. Also I have experience analysing communication protocols (SIP and H323). I'm working with software engineering on my current company where I'm responsable to define the process to our team of analysts, developers and testers. My experience in topics: • Managerial: -- Experienced Project Manager (PMI Member); -- Experienced Development Coordinator / Technical Leader; -- Experienced Business/System Analyst Leader; -- Experienced Scrum Master (Agile Methodologies); -- Experienced Process Developer and Integrator (merge of two companies); -- Knowledge of PMBoK methodologies; -- Knowledge and experience on CMMI implementation, training and evaluation; •Technical: -- Domain about Management Software (MS Project, MS Excel, MS Access, Dot.Project); -- Domain about Atlassian products (JIRA, Confluence, GreenHopper, Bonfire); -- Domain about UML (Unified Modelling Language) notation; -- Domain about Process Modelling Framework tools (EPF - Eclipse Process Framework) -- Knowledge in various languages (C, C++, Perl, PHP, Python, Delphi); -- Knowledge in Operational Systems (Linux Servers, Windows Server and MacOS); -- Knowledge in Web Architectures (Java, Web Services, APIs); -- Knowledge of telephony environments based on Voice Over IP (SIP and H323 protocol); -- Experience using and developing for Asterisk PABX IP software (AGI, IVR applications); -- Knowledge of VOIP software architectures (OpenSips, Sipproxd, RtpProxy, Cisco TCL); • Personal: -- Organized, responsible, engaged and committed. Problem solving and analytical skills, negotiation skills, multi- tasking and Mind Map user.

    $27.78 /hr
    20 hours
    0.00