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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, 64 Asterisk projects are completed every quarter on Upwork.

64

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: September 1, 2015
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  1. 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.

    $22.22 /hr
    691 hours
    4.82
  2. M Fazlul Karim

    M Fazlul Karim

    Expert in Java, Android, PHP, MySQL, SIP

    Bangladesh - Portfolio: 4

    3+ years experience in Software industry by developing various kinds of client or client-server applications, real time applications and mobile applications. Immense knowledge on software architecture, requirement analyzing, designing, developing, testing, deployment and maintenance by providing world class solution to world known clients. Specialties: • Scalable application Development • Expert on J2EE tech like EJB, Servlet, JSP, Struts, Spring, Hibernate, Apache • Immense knowledge in Asp.Net MVC3, Entity Framework, C#, Visual Basic • Expert on HTML, XHTML, CSS, XML, Java Script, AJAX, jQuery, JSON, Web Services • Expert on PHP, MS SQL, MySQL, function, trigger, store procedure and overall SQL. • Expert on SIP and RTP based Android Dialer Development As I have little working history in Elance so I am requesting to clients, Please have a look on my linkedin profile. LinkedIn URL: bd.linkedin.com/in/mfktanim/

    $11.00 /hr
    479 hours
    5.00
  3. Kirill P.

    Kirill P.

    Asterisk Expert and System Administrator

    Russia - 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
    47 hours
    4.99
  4. Zhong W.

    Zhong W.

    Perl hacker and Voip Expert

    China - Tests: 5

    I have more than 8 years working experience of voip industry. i am proficient in Asterisk, Freeswitch, Kamailio,Fusionpbx, A2Billing, Freepbx,Freeside and Linux Administrator. And i have planned and built dozen multi-tenant carrier pbx. i have been always supporting two muti-tenant carrier pbx systems based thirdlane and FusionPBX which both have more than 500 concurrent calls and 3000 registrations extensions. I am able to coding with C/C++, Perl, PHP, shell, sql and other programming language. And I have done sucessfully about 30 jobs about voip system on upwork . I am steady, honest and hard-working. I am fond of innovation and pursuiting new techonologies.

    $27.78 /hr
    2,556 hours
    4.72
  5. Lasantha Indika Amarasinghe

    Lasantha Indika Amarasinghe

    Linux System, Network and VOIP Engineer/Admin - more than 10 years

    Sri Lanka - Tests: 4 - Portfolio: 28

    I am having more than 15 years of Linux system and network administration, VoIP deployments, system integration. My major expert areas are: >>TCP/IP networking & Security :- Advanced ip routing, forwarding, filtering and firewall with Netfilter Iptables, TCP Wappers, Fail2Ban >>Servers :- Sendmail, Postfix, Dovecot, Courier IMAP, Squirrelmail, Roud cube, BIND, Apache, Nginx, VSFTPD, DHCPD, Squid, Samba, Ziproxy(image compression proxy server), any open source or closed source software in the field >> Proxy and content Swapping : Squid forward and revers mode proxy, Nginx forward and reverse mode proxy with content Swapping(Add click, Tracking modules, Java or any script adding to the live web content) >> Control Panels :- CPanel installation and administration >>VoIP :- FreeSwtich, Asterisk based products (Bare Asterisk, Elastix, Trixbox, FreePBX or any related), secure RTP streams (SRTP) with Transport Layer Security (TLS) with or without Server Certificate, CRM integration and Dialers >>Monitoring and remote admin :- Log analyzing, Monitoring, Remote desktop, Remote Admin using tools such like Sarg, Nagios, FreeNX, SSh/Telnet >>Scripting :- Bash, PHP, Perl, Curl >>Web and Database :- SQL Server, MySQL, HTML, PHP, Java Scripts >>Inter-networking :- LAN/WAN using Cisco and DLink Routers, Managed and unmanned Switches, Structured cabling and Fiber cabling systems, >>Telecommunication :- Circuit Switching, SDH and PDH, Ip based networks, Transmission, Telecommunication network implementation and maintenance >>Virtualization:- WMWare Exsi 4/5, HyperV, VirturlBox, Zen >>Operating Systems :- Redhat or Dabian based servers such like CentOS, Ubuntu, Dabian etc,. ### My time zone : GMT +5.30 (Asia/Colombo) Pls consider this on hiring me ### Quality of work : Commit to provide 100% not a bit less than that. If I say it can be done .. definitely it is possible. If I say cant .. surely I cant do that. Welcome clients...

    $22.22 /hr
    82 hours
    4.87
  6. 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.

    $55.56 /hr
    183 hours
    4.54
  7. Christian Arsenal

    Christian Arsenal

    GoAutodial and ViciDial Expert, Tech Support, Administrator

    Philippines - Tests: 2 - Portfolio: 4

    I am an experienced Asterisk,VoIP,Network Administrator /Website Developer / Programmer 5 years of experience in US industry and i am looking forward in helping for those who are in need of my help. My skills, experience and specialties make me an ideal fit for an advertised role. I have in-depth knowledge of experienced Asterisk / VoIP & Network Administrator procedure and documentation. I have remarkable ability to communicate effectively with people over the phone, often in stressful situations. I have proven ability to understand Asterisk / VoIP & Network Administrator terminology.

    $5.56 /hr
    3,922 hours
    4.49
  8. Rilke petrosky U.

    Rilke petrosky U.

    Web Developer / Ethical Hacker & Security Researcher / VoIP Expert

    Dominican Republic - 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
  9. George M.

    George M.

    Expert in VOIP, expierenced in Asterisk,webrtc2sip,sipml5, MVTS,jquery

    Ukraine - Tests: 6 - Portfolio: 9

    My web site is: www.a4business.com I am creating turn-key VOIP platforms for online bussines with WEB-site, different billings, rates setup, VOIP dialers, mobile dialers, DIDx provider integration, paypal online payments for Calling card business, DID and other. I have experience in Asterisk, Sysmaster/VoiceMaster brands (http://sysmaster.com). Demo: www.norfa.com, ( ask me for test PIN ) My video lessons: https://vimeo.com/user36231282/videos Also, I had big expierence with Nextone(, Asterisk, freeswitch, iTelBilling, iTelByteSaver, iTelSwitch, Billbery, Alepo, MVTS, a2billing, freepbx, opensips, kamalio, PHP programming (php-agi, css, jquery), Linux advanced administration, kernel, bash, perl, SQL database architecture: Mysql, MSSQL, Sybase, SQLite, PostgreSQL, Cacti, MRTG, RRD, WHMCS customization, system Backup/Restore schemes. Also I install everything which is needed for business - mail exchange servers (Zimbra, Zarafa, Roundcube Webmail), Ticketing CMS (WHMCS) and write custom modules for each.

    $25.00 /hr
    8 hours
    4.99
  10. Abbas J.

    Abbas J.

    Linux / IT Security Auditor

    United Arab Emirates - Tests: 8 - Portfolio: 7

    Abbas Jafri (Information Security Certified) CEH,CISSM,CISSO,ISMS-LA,ISMS-LI,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)

    $35.00 /hr
    0 hours
    5.00