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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.

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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, 59 Asterisk projects are completed every quarter on Upwork.

59

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 4.58.

4.58
Last updated: August 1, 2015
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  1. Rilke petrosky U.

    Rilke petrosky U.

    Web Developer / Ethical Hacker & Security Researcher / VoIP Expert

    Dominican Republic - Last active: 4 days ago - Tests: 6 - Portfolio: 4

    To serve mankind with my knowledge and skills obtained by a lifetime devoted to computer systems & technology and more than 15 years working with network security and ethical hacking. * Proficient in C / C++ as well as x86-Assembly, Javascript, Node.js, Ruby-on-Rails, Java and PHP. * Sharp Unix skills ( Solaris, Linux, BSD), from shell-scripting to kernel patching. System administration and process automation expert. * Hands on PSTN, Switching, PBX and VoIP knowledge. Business oriented CTI (Computer-Telephony integration ) expertise. * Reverse engineer binary code. Security vulnerabilities discovery for fun and profit. * I am a creative developer able to come with high quality solutions for uncommon problems.

    $28.13 /hr
    0 hours
    5.00
  2. Anton Stremovskiy

    Anton Stremovskiy

    iOS Developer & VoIP Engineer

    Ukraine - Last active: 20 days ago - Tests: 5 - Portfolio: 1

    More than 10 years experience in IT engineering. 1 year experience in Objective-C developing. Extensive experience in Linux & Unix systems. Deep practical knowledge VoIP Telephone and PBX Integration. Motivated team player with excellent communication skills. Expertise of working with internationally distributed teams. Fast learning and self-educating. Willing to travel as needed.

    Groups: Corona Labs

    $22.22 /hr
    0 hours
    5.00
  3. Tamas Halasz

    Tamas Halasz

    Highly Recommeded Mobile & Web Developer

    Hungary - Last active: 1 month ago - Tests: 3 - Portfolio: 5

    3 Years of Extensive Experience in the Mobile World and Linux Server Administration. I LOVE Mobiles and I like to offer the most COST-EFFECTIVE mobile solutions Self-directed and motivated Mobile Developer with 3+ years' experience in Objective C/Xcode, Java, C/C++. My Core Skills and Experiences are following : VOIP, XMPP, Video Streaming, Asterisk, FreePBX, * Objective C/XCode, iOS7, iOS8, Whatsapp Clone, Instagram Clone, Google Map Service, Geolocation, GPS * , Social/Event sharing/Photo sharing, Database Design & Management. I am seeking long term partnership with equally dedicated, professional buyers :-) Respectfully & Sincerely

    $50.00 /hr
    3 hours
    5.00
  4. Abbas J.

    Abbas J.

    Linux / FreeBSD System Administrator

    United Arab Emirates - Last active: 1 month ago - Tests: 8 - Portfolio: 7

    Abbas Jafri (Information Security Certified) ISMS-LA,ISMS-LI,CISSO, RHCT Over +16 years extensive experience of Linux systems administration, application designing, IT Infrastructure, IT helpdesk, System Management and Information Security, also having experience of installing, configuring, maintaining and troubleshooting of Linux, Solaris, AIX and windows base servers, security software, IPS, Firewalls, routers, switches and systems monitoring tools. Possess the enthusiasm for work, strong desire to succeed and commitment to continuous skill development that help build confidence and high level motivation to achieve desired results. Very ambitious to help others and work in the IT field. Note : Having experience of successful deployment of Call Center and vTiger CRM in Elastix and FreePBX in UAE, Bangkok, India and Pakistan with customization and Integration of IVR with MySQL database to read loyalty points or credit card information. Also having experience of connect multiple asterisk servers through sip trunks. Experienced with a broad range of servers, applications, utilities & tools and protocols, including the following: Storage: EMC SAN CX-300 and CX-400 IPS: IBM GX4004C-V2-1-P DB Monitoring: IBM InfoSphere Guardium, Aqua Data Servers: SUNFire T2000, V240, Dell Power Edge 860, R-200, R-2950, HP Proliant DL380 G6 Databases: Sybase 12.5, Oracle 8i, 9i & 10g, MySQL 5.5 Operating Systems: Red Hat Linux, Centos, Suse, Solaris, Windows Server 2003 Infrastructure: TCP/IP, UDP, ICMP, Network troubleshooting Server configuration, Physical network maintenance and upgrades, DHCP, SNMP,IPv6,Linux Cluster with HA, Windows Cluster, Load Balancing, Alchemy, Nagios, MRTG, PRTG, System Security, Physical Security(CCTV, Access Control), ERwin, EZ SQL Security: Advanced knowledge of Linux security, Secure Internet services, LAN/WAN Security VPN, Firewalls (Juniper Net screen, IPFilter) ,KAME, IPSEC, Encryption (3DES, SSL) SSH (SSH v1, v2 and OpenSSH) , Kerberos5, Host-based security, OS Hardening network services, SmartFilter (Web Gateway Security),Information Security Policy Design and Implementation, Network/Host Security Auditing Software: Apache HTTP/HTTPS servers (versions 1.3.x/2.0), IIS, AD, WampServer, DNS (BIND 4/8/9) , Vi, ViM, ftp, NFS , NIS, NTP, ntpdate, POP, IMAP, IMAPS,PPP (FreeBSD Kernel PPP), SMTP (Sogo-1.3, QMail, Sendmail, procmail, Fetchmail) , Samba, LDAP, Asterisk, Webmin, X Window System (Configuring servers, Desktops, Application Servers)

    $22.22 /hr
    0 hours
    5.00
  5. Iovcho Iovchev

    Iovcho Iovchev

    System Administrator

    Bulgaria - Last active: 21 days ago

    I have over 7 years experienced and broadly-skilled System Administrator (Linux and Windows Administration) . I am extremely customer service oriented and dedicated to the tasks I'm doing. Please find below some of my areas of expertise: -Control Panel ( WHM,Plesk, Webmin, Cpanel, Kloxo, ISPConfig, etc); -Email server ( Postfix, qmail,Zimbra,Dovecot,Send-mail, Exim and troubleshooting with protocols - IMAP(s) SMTP(s), POP3(s)); -Visualization (KVM, XEN, vmware, virtual-box, OpenVZ); -Malware issue fixing, Internet Security; -Server performance optimization (Apache, MySQL); -Server security (VPN, firewall, iptables); -Server Monitoring (Nagios, NRPE, MRTG, Cacti and other);

    $3.00 /hr
    0 hours
    5.00
  6. Sudhir M.

    Sudhir M.

    Nothing is impossible!!!

    India - Last active: 1 day ago - Portfolio: 1

    10+ experience in over voice projects - USSD over SMPP - SMS integration - Kannel - Java - Hadoop - Advanced Java - Hibernate & Struts - C - C++ - Asterisk - Voice solutions - Conferencing Solutions - CCXML - VXML - Voice/Video conferencing - SMS Gateway - SS7 - ISDN - VOIP - Google text to speech with Asterisk - Google speech to text with Asterisk - Proficient in changing/ maintaining asterisk inbuilt applications - Payment Gateway Integration with Bank / Telecom Operators - SOAP - PHP scripts - Java Script - 3G Gateway Configuration on Asterisk - IVVR applications on 3G - Asterisk CRM configuration - Call Center setup using asterisk - Streaming Server - Voice recognition in IVR - Speech Engine Talishma - MySql,Ms-Access as back end. - Elastix - A2billing - Vicidial - Vtiger - SugarCRM

    $16.00 /hr
    0 hours
    5.00
  7. Cesar Q.

    Cesar Q.

    Problem Solver

    Venezuela - Last active: 20 hours ago - Portfolio: 4

    Within my areas of expertise are: VoIP, Web Programming and Linux Systems Administration. I have been working in the Telecommunications field for around 6 years, work experience along with college allow me to acquire strong abilities with computers and telco equipment. As a plus I have experience developing web applications from scratch, hands on PHP, Jquery and mysql. Also I manage my own virtual server since 2011, by doing this I have acquired experience using Plesk 10.4,virtuozzo manager, apache, asterisk, phpmyadmin and Linux OS.

    $20.00 /hr
    4 hours
    4.99
  8. Azam K.

    Azam K.

    Experienced in Linux & Systems Administration and Elastix Call Center

    Bangladesh - Last active: 4 months ago - Tests: 3 - Portfolio: 1

    I have been working in a 'System and Networking' group to support servers in a mixed operating system environment for more than six years. My strengths are in installation, commission, operation and maintenance of Linux based servers and system administration. I deployed wide range of Linux servers, implemented hardening features, high availability for small to medium enterprises. I want to work in those expert areas so that I may utilize my core skills with utmost sincerity and honesty. I successfully implemented a scalable multi-branch phone/online based customer support service solution using off-the-shelf hardware and ASTERISK, Linux based the most popular open source IP-PBX sever, surprisingly at a very low cost. As part of this project, I also developed a web-based customer complaint management system integrated with ASTERISK that facilitates management to make intelligent business decision. This is a ticketing system for customer support having features of call recording, call escalation and monitoring. Moreover, I have deployed several Linux based (using Asterisk, AsteriskNOW, Elastix, FreePBX, Vicidial, GoAutodial and some mid-level wed developement) mini call center and customer support solution in home and abroad. I have some experience in web development and Smart Metering (AMR, AMI) System also. I developed the customer complaint management system using CodeIgniter PHP MVC framework & MySQL and integrated with Asterisk telephony engine. I have developed some Joomla based website also. I completed Master of Engineering in Computer Science and Engineering in 2013. I am a Red Hat Certified Engineer (RHCE) with expertise on Red Hat Enterprise Clustering and Storage Management (RH436) and completed Red Hat Server Hardening (RH413)and Red Hat Enterprise Deployment, Virtualization, and Systems Management (RH401) training. I passed Information Technology Engineer Exam (ITEE) in 2014 and successfully completed Level-1 Online Introductory Technical Training on Sangoma TDM Interface Cards also. I am seeking opportunities to work on Linux & Systems Administration and call center solution for startup companies and small businesses..

    $13.33 /hr
    65 hours
    5.00
  9. Sergey P.

    Sergey P.

    VoIP and Linux Engineer

    Russia - Last active: 1 day 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, kamailio/ser (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