VOIP Software Freelancers

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

VOIP Software Job Cost Overview

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

Upwork VOIP Software Jobs Completed Quarterly

On average, 54 VOIP Software projects are completed every quarter on Upwork.

54

Time to Complete Upwork VOIP Software Jobs

Time needed to complete a VOIP Software project on Upwork.

Average VOIP Software Freelancer Feedback Score

VOIP Software Upwork freelancers typically receive a client rating of 4.55.

4.55
Last updated: May 1, 2015

Popular VOIP Software Searches

More options
Clear all filters
  1. Dmitry Sytchev

    Dmitry Sytchev

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

    Russia - Last active: 11 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
    88 hours
    4.96
  2. Oleg Russkin

    Oleg Russkin

    Software Technical Support with Junior Python Java skills

    Ukraine - Last active: 6 days ago - Tests: 2

    Experienced Technical Support guy, problem resolver. QA skills: QA core courses. Selenium IDE, basic web driver. Bug trackers - Jira, Mantis, Redmine, Bugzilla - bug reporting, installation on aws ec2, running through their web interface. SQL basics. Java skills: Pre-core (basics cycles, threads, io) JavaRush, level 20 (online courses with practical approach, like codecademy). Fast learner. Fast searcher. Basic knowledge of HTML, PHP. Advanced pc user (using windows, linux. macos, aws ec2 - ssh,ftp, console). Main education and work experience: Pharmaceutical technology engineer - execution of high responsibility tasks, drawing up specifications, plans, protocols, organization of facility manufacturing process. Master of quality assurance - drawing up validation and qualification documentation, holding qualification and validation events, choosing appropriate equipment and finding/contacting dealers/manufactures. (On plants, producing medical products for human and veterinary use) English-to-russian translations, commonly technical.

    $20.00 /hr
    298 hours
    5.00
  3. Aleksandr Z.

    Aleksandr Z.

    Expert UNIX and network administrator

    Russia - Last active: 3 days ago - Tests: 10

    My goal is customer satisfaction. If you need to get something done - leave it to me. OS: Linux - expert, FreeBSD, solaris and Windows Server - proficient Cloud services: AWS, Rackspace Web servers: Apache, Nginx, Tomcat Database servers: Mysql, Postgresql Monitoring: Nagios, Zabbix, Monit, Munin, Cacti Virtualization: Vmware ESXi/server, Citrix, Proxmox Mail servers: Exim, Sendmail, Dovecot, postfix, Zimbra Backups: Bacula, duplicity Other: standard network services (DNS, DHCP, LDAP, Samba, http proxy, VPN, backups, monitoring etc), firewalls and routers (iptables, iproute, VLAN, bridging, bonding, bgp, ospf, infiniband).

    $16.67 /hr
    60 hours
    4.74
  4. Tom G.

    Tom G.

    Magento, python & Linux Expert.

    Ecuador - Last active: 2 days ago - Tests: 7

    I've got great php/mysql/css/html,javascript skills and use linux, ssh, git, svn, mercurial, apache, nginx and varnish on a daily basis, and I'm fluent both speaking and writing English and Spanish, I know a bunch of other languages to a lesser extent. Some of my work includes Magento(Community and Enterprise), Wordpress, Blender, Linux shell scripts, windows USB drivers, Server administration, configuration and much more. Most contracts require me to use Magento where I have done the following tasks: Event Observers. SOAP Api Extensions. Complete Custom Modules. Core Overrides. Upgrading Magento to Specific or Latest Version. Theme Customization. Custom Code Debugging. Everything else really. I've done everything with Magento at this point. I'm also comfortable using c, c++, python, and possibly any other normal programing language, either for web development(django) or gtk, qt and desktop applications. I prefer to use free software or open source tools, and while we can talk through Skype, I'll probably will ask you to use something like Jitsi or some other tool, to talk to me, you can also call me to my US number anytime. I'm familiar with SIP and VOIP frameworks for IM and voice applications, I can help you setup an Asterix server or a phone system for your company. I have extensive database experience and I've used mysql, postgres and sqlite to create very complex db schemes. Give me a try there is a high probability of you being happy with my performance. Cheers!!

    $79.99 /hr
    1,868 hours
    5.00
  5. Cuong Thai Huy

    Cuong Thai Huy

    XMPP/VoIP developer

    Vietnam - Last active: 23 hours ago - Tests: 9

    Excellent understanding of XMPP from client to server. I have implemented XMPP client for web app (using Strophe), android app (using Smack), desktop app (using libjingle). On ejabberd, I have implemented many modules that defines own presence, iq, message, even I can define own stanza. Execellent understanding WebRTC. I have implemented Linux application that uses XMPP or Websocket for signaling and WebRTC for media transport to establish p2p audio&video call. Source code of Android WebRTC application are public on github (https://github.com/cuongth/AppRTCDemo). In these days, I spend free time on Cowboy server.

    $22.00 /hr
    396 hours
    5.00
  6. Alexandro Conde

    Alexandro Conde

    Linux/Unix Server and VOIP/Network Administrator, PHP/Perl Developer

    Mexico - Last active: 1 month ago - Tests: 6

    I have been Linux/Unix Server Administrator (RHE, Centos, Debian, Solaris) for several companies since 1998, for 10 years I Install, Setup and Manage all the servers and Networking Equipment for all the services (Email, Databases, WebApplications, VoipApplications, CPE-provisioning, Monitoring, Security and VPNs) in a VOIP Company always having the security and availability in mind. I'm organized and can work well with people in other countries talking and writing in English or Spanish. I also develop projects in LAMP, Shell scripts and Backup process. My skills are always growing as every project have new challenges and I like to keep my own records of how I did the work.

    $27.78 /hr
    0 hours
    5.00
  7. Kirill K.

    Kirill K.

    Russia - Last active: 13 days ago - Tests: 3

    Thank you for viewing my profile! I am a software developer with 4 years of experience in C and C++ development for Windows and Linux platforms. Here are language, systems etc. I have an extensive knowledge of: C\C++, Python, MySQL, Voip (configurating and developing modules for kamailio, yate), development linux kernel modules.

    $20.00 /hr
    6 hours
    5.00
  8. Eugene Z.

    Eugene Z. Agency Contractor

    C#, VB.NET, ASP.NET MVC, Web/Win Forms, WPF, MVVM, WCF, WebServices

    Ukraine - Last active: 1 day ago - Tests: 5 - Portfolio: 13

    Over 8 years of experience as a software developer. Participated and developed wide range of projects using .NET, C#, VB.NET, Windows/Web Services, ASP.NET /MVC. I'm rather communicative, active and reliable person. Have active life position and always tries to keep myself updated in new technologies. I'm very interested in development of different kind applications on .NET platform. Also I always ready to study something new. The level of my English is good. I have used to take part in verbal conversations with the customers and their remote teams. Have an experience working in team of developers with the ability to work as a team member, to lead and to follow, depending on the situation and responsibilities assigned to.

    Groups: Application Developers Alliance

    Associated with: EaZySoft

    $33.33 /hr
    2,570 hours
    4.97
  9. Oleg K.

    Oleg K. Agency Contractor

    Senior VoIP/Linux/Network Engineer (dCAP, CCNA, ITIL certified)

    Russia - Last active: 7 days ago - Tests: 6

    I am a Senior VoIP/Linux/Network Engineer (dCAP, CCNA, ITIL certified). I do have experience and offer my services in these areas: VoIP: Asterisk, FreePBX, Elastix, A2billing VoIP Security & Tuning VoIP Integration Network Administration: Cisco, HP System Administration: Linux (expert), BSD*(proficient) Network Monitoring & Management: Zabbix, Cacti, NOC Mail services: Postfix, Exim, Dovecot, Cyrus, Spamassassin Virtualization: Qemu/KVM, OpenVZ, Proxmox High availability: VRRP, CARP, DRBD, GFS2, GlusterFS, cman, Pacemaker Common services: DNS, DHCP, File Sharing, NAT, iptables, ipfw Scripting: Bash, Python Web servers: Apache Database servers: MySQL, PostgreSQL Etc…

    Associated with: NemBit

    $36.00 /hr
    282 hours
    4.98
  10. Jeremy Brainard

    Jeremy Brainard

    Seasoned IT Pro / Technology Enthusiast / CEH

    United States - Last active: 3 months ago - Tests: 4

    I am an extremely skilled, motivated, and highly knowledgeable IT professional with 15+ years in the IT industry. I am also an EC Council Certified Ethical Hacker, and in addition to security services, I provide a vast array of technical solutions to both businesses and individuals. From network/server/workstation planning and implementation to advanced troubleshooting and traffic analysis, I am THE answer to your technical demands. Add to this the fact that technology isn't just my profession; it's my passion, and you will discover why my clients have been with me for years and wouldn't consider switching. I absorb and become well-versed at any issue thrown my way, and will get to the bottom of whatever roadblock I encounter. Who I am not: your average neighborhood tech geek, a rep from a fly-by-night shop, or someone sending proposals to any listing that appears. I choose my applications very carefully, and make sure I have budgeted enough time to complete the task required. I also do not apply for jobs that I'm not 100% certain I can handle. Due to these and many other reasons, I have built a solid name for myself locally, and will do so here as well. You'll be glad you chose to have done business with me, and I look forward to meeting your technological challenges head-on.

    $44.44 /hr
    94 hours
    5.00