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

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  1. Rupali Solanki

    Rupali Solanki

    VoIP/Telecom Software Engineer

    United States - Last active: 06/28/2014

    Dedicated Engineer with excellent technical, analytical and communication skills demonstrated by 3.5 years A Design & Development Engineer in the field of Telecom(VoIP) software and call processing. Strong programming skills in C in Linux Environment. Experienced with Embedded system programming, through extensive work in Wind river’s Linux and Protocol Development . Familiar with shell and Python scripting. Fast Learning and Comprehensive problem solving abilities

    $16.67 /hr
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  2. Dmitry M.

    Dmitry M.

    Senior Software Developer / Architect

    Russia - Last active: 21 days ago - Portfolio: 4

    I'm software developer and architect with 10+ years of experience in server and mobile development areas. Currently I'm available for contract work (remotely is preferred). My specialities include: - Android - deep knowledge from the very low layers (kernel-specifics and native low-level components) to high-level Java development. - Linux - server development in C, C++, Ruby and Erlang. - VoIP - expertise in VoIP protocols (SIP/RTP/RTSP etc) and related networking technologies. - Ability to "get things done" - I know how to setup development process for teams, getting product done (development workflow, code reviews, automated testing, etc).

    $80.00 /hr
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  3. Kevin Carlson

    Kevin Carlson

    IT Guru, Network Architect, Endurance Coach

    United States - Last active: 03/19/2014 - Tests: 2 - Portfolio: 3

    Endurance Athlete, Information Technology Specialist, High Altitude Trainer, Corona High School Mountain Bike Team Head Coach, Nutritionist (In Study) Gifted Information Technology Professional recognized by MSP Mentor as “One of the Top 250 People to Know in the IT Industry.” (2009) Earned reputation as an industry leader and manager of successful Managed IT Services organizations, author of reports and scripts used today in thousands of installs that set standards of delivery for IT services providers, and “out of the box” thinker. Expert in Business Intelligence, Storage, and Virtualization solutions. Proven ability to assemble and lead multidisciplinary teams of IT professionals in delivering complex solutions and development projects on time and within budget. Specialties: Strategic Planning  IT Solutions Development  Infrastructure Architecture  Managed Services Virtualization  Storage Solutions  Business Intelligence  Project Management  Design Networking  RMM  Cloud RMM  Resource Allocation  Team Leadership  Kerio

    $105.56 /hr
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  4. Jerome Martin

    Jerome Martin

    Linux Architect and Developper / VoIP, HA & Storage expert

    France - Last active: 07/03/2014

    Linux • BSD • Open Source • High Availability • Distributed Systems • Storage Systems • VoIP Networks • NGN • Clustered Systems • Cloud Computing • Virtualization Working with Linux and *BSD Systems since 1995. • Storage Original author an current maintainer of RTSLib and TargetCLI, the open-source Linux Kernel's SCSI Target userspace API and administration tool. • http://linux-iscsi.com/wiki/Targetcli • https://github.com/Datera/rtslib • http://en.wikipedia.org/wiki/LIO_Target RTSLib is today a base component of most Linux-based SAN and iSCSI-enabled NAS appliances and systems. Developed Cluster Management Software for Distributed Storage Systems, Private Cloud Infrastructures and Service Provisionning and Fault-Tolerance. • https://www.youtube.com/watch?v=zSyybHxuT68 • http://linux-iscsi.com/index.php/VHACS • VoIP Architected VoIP service platforms, ranging from enterprise services to mid-sized telco infrastructures with SS7/SSUTR2 interoperability, SIP/MGCP/SCCP/POTS/ISDN endpoints, passing on millions of minutes - with a focus on cost and service availability - thricely in wholesale, enterprise and residential markets. SER • OpenSER • Kamailio • OpenSIPS • RTPProxy • SEMS • Asterisk Centile • Dialogic • Cantata • Audiocodes • Cisco

    $200.00 /hr
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  5. Eugene Demchenko

    Eugene Demchenko

    Eugene Demchenko

    Russia - Last active: 10/02/2014 - Tests: 10

    Overview I have hands-on experience with wide variety of technologies, deep enough to solve any sort of tasks and problems my team and I are facing every day. Good interpersonal skills, curiosity, enthusiasm and dedication - these skills help me inspire my colleagues, accomplish tasks and meet deadlines. Currently I have more than 6 years of professional experience in development of enterprise-level applications. Hands-on experience includes: - C/C++, Delphi; - JavaScript, NodeJS, PHP - MySQL, PostgreSQL, Redis, MongoDB; - Linux administration, etc., etc. Current area of interests includes distributed systems, cloud computing and data mining. I always strive for further advancement of my personal and professional skills.

    $20.00 /hr
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  6. Darren B.

    Darren B.

    WILL WORK FOR FREE - Web Developer, E-Commerce and Project Management

    United Kingdom - Last active: 11/05/2014 - Tests: 2

    I am currently seeking new opportunities to build my portfolio and help clients with their projects from start to finish. I will work for FREE or reduce my rates to get projects on my portfolio. I have years of experience in leading edge technologies such as JavaScript, PHP, MySQL and VB.NET. Project Management Roles is what I am currently looking for as this is an area I can excel in. Skill-set - E-Commerce Frameworks - Woo Commerce and Magento - Programming in VB.NET, SQL, JavaScript, PHP, HTML5 - Graphic Design Tools: Adobe Illustrator, Photoshop and InDesign - Project Management: Agile Methodology using JIRA Agile

    $30.00 /hr
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  7. Sergey Pozdnyakov

    Sergey Pozdnyakov

    Senior Software Developer

    Russia - Last active: 3 months ago - Tests: 4

    My name is Sergey Pozdnyakov. I'm a software developer with 10+ years of programming experience. I have an expertise in very different areas, including: - Financial software and database programming - Embedded software for Linux- and RTOS-based devices (closed platform mobile phones, e-readers etc) - Mobile software for Microsoft platform - Desktop software for Windows, cross-platform desktop software created with Qt framework - Server software (VoIP) I'm an expert in C/C++, and have a very good knowledge of Perl and Python. Most of the software I created was for Windows platform, but I also had some projects for Linux and Mac OS X. I've worked for several international companies (American and European), so communication wouldn't be a problem. I've participated in creation of commercial software products, and I'm good with meeting deadlines. I worked in a senior developer position, and communication with customers in order to collect business requirements was one of my primary tasks, so I will treat every project very carefully and make sure that I have full understanding of customer needs.

    $20.00 /hr
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  8. Carlos Andres Bolaños Realpe

    Carlos Andres Bolaños Realpe

    Software Architect and Developer

    Colombia - Last active: 11/18/2014 - Portfolio: 2

    Summary Software Engineer with a focus on distributed systems development, HA systems and highly scalable Internet-based architectures. More than 10 years of experience working for different industries such as: Telecommunications, E-Commerce, Banking, Retail, B2C, etc. Specialties: Distributed systems programming, Erlang/OTP, C/C++, Java, C#, UNIX/POSIX programming, VoIP, NGIN. Experience Technical Lead, Intertec International Heredia, Costa rica — 2014-Present CTO/Co-Founder, Niagara Systems, Inc. Medellin, Colombia — 2008-Present - Designed and developed WEST, tool written in Erlang/OTP for messaging-based systems development, with high concurrency and real-time requirements. [https://github.com/cabolanos/west] - Designed and developed WEST Java Client. [https://github.com/cabolanos/west-java-client] - Designed and developed IM solution, using Erlang/OTP, MongooseIM, FFMpeg, Nginx Media Server and FreeBSD. - Designed and developed MERC, a MarkLogic REST Client written in Erlang/OTP. - Designed and developed Cloud Communications Platform with a RESTful API. Technologies: Java, Mobicents (JAIN SLEE, MMS), Spring and JBoss AS. - Designed and developed a distributed logging solution with Riak database and Erlang/OTP. - Designed and implemented EMCALI Click-To-Call Service. Technologies: Java, JSLEE, Mobicents Media Server and JBoss AS. - Implemented Cloud Communication Platform for EMCALI. - Designed and implemented Electronic Recharge Service. Technologies: C/C++, Dialogic. - Designed and implemented Sponsored Calls Service. Technologies: Java, JSLEE, Mobicents Media Server and JBoss AS. - Designed Mobile Services architecture for Avianca BCBP System (Bar Coding Boarding Pass). - Designed Next Generation Services Platform for ETB. IT Specialist/Applications Architect, IBM Bogotá, Colombia — 2011-2013 Bancolombia - Innova Project. - Designed and developed SWIFT Server simulator. Technologies: Java, Spring, JMS and WebSphere MQ. - Designed architecture of Distributed Document Management System. - Designed and developed a distributed caching solution, using Java, Spring, EHCache and Memcached. - Designed architecture of TRADE solution, based on SOA and EDA. Senior Software Architect, Carvajal S.A. Cali, Colombia — 2008-2011 - Designed and developed EWS (EBusiness Web Services), a Web-based business network and invoicing platform. Technologies: Java, JMS, Spring Integration, REST and WebSockets. - Designed and developed Peru Electronic Billing Solution based on SUNAT government regulations. Technologies: Java, JMS, Spring Integration and SOAP. - Designed a Credit Card Solution for COOMEVA. - Designed and implemented a Distributed Caching System. - Designed a Mass Email Sending System. - Implemented a Capacity and Performance Model for B2B invoicing platform, using QN Models. - Designed and developed Traceability Solution based on RFID technology. Software Engineer, T-Uno Colombia Bogotá, Colombia — 2007-2008 - Designed a Real Time Video Conference System. - Designed and developed a voice-recording module for an audio conference platform. C/C++ and Aculab. - Designed and developed a digital E1 line monitoring system. C/C++ and Aculab. Software Developer, Innovatec Ltda. Cali, Colombia — 2006-2007 - Designed and developed Prepaid Calling Card Platform. C/C++ and Dialogic. - Developed a VoIP/TDM/PRI/GSM gateway. C/C++ and Dialogic. - Developed version 2 of PBX platform. C/C++ and Dialogic. - Designed and developed TEMAS, a Telemarketing application written in C/C++, using Dialogic boards. Education Master of Management, Information Technologies Cali, Colombia — 2010-Present Universidad ICESI. Specialist in Networks and Communications Cali, Colombia — 2007-2010 Universidad ICESI. Bachelor of Science in Electronics Engineering Cali, Colombia — 2000-2006 Pontificia Universidad Javeriana. Professional Qualifications - Software Architecture Design Professional Certificate, Carnegie Mellon University and Software Engineering Institute, 2011. - Advanced Distributed Systems Design using SOA & DDD, presented by Udi Dahan, 2010. - Business Process Management Course, IT Institute (ITERA), 2009. Skills & Expertise - Erlang/OTP - Distributed Systems - C/C++ - Enterprise Software Architecture - Java - Real-Time Systems (VoIP, NGIN, IMS) - Unix/Posix Programming - NoSQL (Riak, MongoDB, CouchBase, Redis, etc.)

    $38.89 /hr
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