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Post your VXML application development project on Upwork, the world’s largest online workplace, and hire expert IVR developers and software engineers with VoiceXML experience to create industry-standard interactive voice response applications. They can develop voice exchange platforms, IVR controllers to run through your SIP VOIP server, or Mobile SIP dialers, as well as voice and DTMF apps. These developers can even complete phone chat-line IVR systems with voice mail controllers, or an API- or email-controlled VOIP-based auto dialer.

Voice XML is the W3C standard XML format for creating interactive voice response (IVR) applications with features like audio playback functionality, speech synthesis and recognition, and dialog management. On Upwork, companies hire professional VXML developers to manage IVR development or to create custom VoiceXML API integration and speech recognition engines integrated with other communication software (like FreeSWITCH or Asterisk).

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VoiceXML Job Cost Overview

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

Upwork VoiceXML Jobs Completed Quarterly

On average, 2 VoiceXML projects are completed every quarter on Upwork.


Time to Complete Upwork VoiceXML Jobs

Time needed to complete a VoiceXML project on Upwork.

Average VoiceXML Freelancer Feedback Score

VoiceXML Upwork freelancers typically receive a client rating of 3.48.

Last updated: October 1, 2015

Popular VoiceXML Searches

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vojislav jovanovic

vojislav jovanovic

Unified Communications Consultant and Architect

Serbia - Portfolio: 1

Highly skilled and experienced network consultant, specialized in IP telephony, Unified communications (UC), Contact Centers with large advisory, design, technical architecture, team lead, field eng. & implementation experience, looking for a job in well established outsourcing company or enterprise with large complex communication system. The position should allow further exploitation of skills related to Global Voice Architect consultancy on complex solutions, Management consultancy or Solution and Service Delivery during high scale Converged Comunications projects in Unified & Networking communications, further development in knowledge, technical advisory & project techlead skills. * 12+ years of Networking - Unified Communications experience, Enterprise Solutions * CCIE Voice #25840 * Micro and Macro, LLD/HLD Design generation, Data gathering and transfer of customer needs into solution * Several awarded large scale projects,presales, postsales eng., implementation, operation

$33.00 /hr
0 hours

Ilya Rubinchik

Ilya Rubinchik

Systems and network administrator

Russia - Tests: 4

Familiar with VoIP technologies: signaling protocols (SIP, H.323, SCCP, MGCP), voice codecs, applications. CCIE Voice written. Have experience in design and implementation of Cisco Unified Communications solution suite: Unified Communications manager 4-9, Unity Connection, Unified Contact Center Express (UCCX), Unified Presence, Mobility. Also worked a lot with Cisco Unified Border Element (CUBE), CallManager Express, Unity Express, and other IOS based voice features. Also experienced in Video over IP, primarily focusing in TANDBERG technologies and equipment. Worked with TANDBERG VCS, TMS, ExpressWay, ConferenceMe, Codian MCU and Gateways, Telepresence T3, T1, Telepresence server, and so on. TANDBERG Codecs: MXP's, new E and EX series, Telepresence codecs. Administering network hardware: Cisco integrated services routers, Catalyst switches and Access servers. DSLAMs by Zyxel, Corecess, D-Link. Interior and exterior network routing (OSPF, EIGRP, BGP4). Administering Linux servers with many services (smtp, pop3, imap, dns, http, ftp, dynamic routing, etc) Managing databases: MySQL, MSSQL, PostgreSql. Specialties Voice over IP, Video over IP, Videoconference, Telepresence, Unified Communications, LAN/WAN network architecture

$15.00 /hr
0 hours

Farhan K.

Farhan K. Agency Contractor

Software Engineer, Biometric , DirectX, Security, Websites , Win32

Pakistan - Tests: 5 - Portfolio: 19

I have an experience of 11 years including managerial skills like, managing & leading different teams concurrently, making technology fusions for rare solutions, handling and communicating foreign clients, picking new technologies for solution, making project plans/deadline, software documentation including Flow and Architectures and business strategies for Software development. My vast experience includes skills like PHP, PHP 5, PHP YII framework, RESTful Api , OpenCV , Visual C++ , C++ , C , Java , J2me , HTML 5, Android SDK and native C++, Action Script , Torque , WML , Lua, VB scripting , Java Script, Ajax and many different applications. You can find more detail about my work in the following links. Online Portfolio: Online CV /Certificate: Online Freelance Profiles:

Associated with: Nauman Hameed

$31.11 /hr
723 hours

Luis Manuel Morales Colmenares

Luis Manuel Morales Colmenares

PENTAHO DATA INTEGRATIO & DATA Masking Specialist / IT Consulting

Uruguay - Tests: 2 - Portfolio: 2

My name is Luis Manuel Morales. I’m Bachelor´s Degree in Computer Science from the Central University on Venezuela. At work I have more than twenty ( 20) years of experience in the IT world diversified into several areas: - Software Development, play the roles: Project Manager, Solution Architect , Senior Developer , DBA, Specialist Testing and Documentation Specialist. -Platform IT, play the roles: I have served as IT Manager , IT Coordinator and IT specialist ( specifically level platforms : Unix , Linux and Amazon AWS). -Quality assurance, ETL & Data Masking: play the roles : Coordinator and Project Leader for Data Masking , Designing ETL and Data Quality . My skills are aligned with developments as Leader WEB development using the various steps and concepts for software factories and level of management and project coordination . However i haver established experience as Senior Developer and IT Specialist , specializing in the following technologies: ETL, DATA MASKING, AMAZON (AWS, S3, EC2), LINUX, ASTERISK, HTML5, PHP, PERL, JSON ,RESTFUL, JAVA SCRIPT FRAMEWORKS (SENCHA EXTJS, JQUERY , EASYUI, DHTMLX), VOIP, SMS, Responsive Design (TWITTER BOOTSTRAP). DBA functions and support for databases: ORACLE, POSTGRES, MYSQL and MsSql. MVC (SMARTY TEMPLATES) and medium skills CMS (JOOMLA, WORPRESS). Control Version System (SUBVERSION, GIT, CSV). Project management tools (REDMINE, GANTTER, MSPROJECT, WBS-CHARTPRO, ENDEAVOUR). GENEXUS Developer (.net, java and smartdevices), System and developer for MOODLE Elearning platforms. My English level is good to write and average for conversation. My default language is Spanish and beginner level read/write of French. Objetive: - Data Security: ETL and Data Masking - CMS (Joomla or php based) - TV & Sports Media Software Integrator (Lyric Pro - Chyron & Deko) - Management Information Technology and Telecommunications. - Safety management logic (Systems and Telecommunications). - Management and Solutions Architecture Information Technology. - Planning, Development and Project Management. - Basesball and Sports Stats technologies Skills: - PHP. Level: Advanced, Years: 13+ - PERL. Level: Advanced, Years: 10+ - SQL. Level: Advanced, Years: 15+ - Linux. Level: Advanced, Years: 18+ - Postgres. Level: Advanced Admin and SQL, Years: 8+ - MySql. Level: Advanced Admin and SQL, Years: 12+ - Oracle. Level: Basic and SQL Advan, Years: 8+ - MSSQL. Level: Basic and SQL Advan, Years: 8+ - Asterisk. Level: Advanced, Years: 6+ - Pentaho. Level: Advanced, Years: 6+ - Data Masking. Level: Advanced, Years: 6+ - ETL. Level: Advanced, Years: 6+ - Unix Shell Scripting. Level: Medium, Years: 6 + - Subversion. Level: Basic, Years: 9+ - Java. Level: Basic, Years: 6+ My LinkedIn profile:

100% Job Success
$16.67 /hr
362 hours

Abdel-moniem REZK

Abdel-moniem REZK

Unified Communications & Collaborations Architect | CCIE 18832 Collab.

United Kingdom

A Unified Communications and Collaborations Architect with more than 13 years of experience in Build, Run, Operate, and Troubleshoot of Cisco and Multi-vendor Unified Communications, Collaborations, Video Communications, Infrastructure networking, Unified Computing, Contact Centre Express technology, Wireless networking, and IT operation management. A Cisco Certified Internetwork Expert (CCIE #18832) in Collaboration, Cisco Certified Network Professional, (CCNP) in Routing and Switching, an Enterprise Architect with TOGAF model and many other certifications with more experience in other areas. A member of the Cisco CCIE Advisory Council to advance the value of the Certification. Holding a Master degree with Distinction in Telecommunications Engineering, and progressing PhD student in the UK. A Freelance professional technical and Academic instructor in Telecommunications Engineering and computer science. A Researcher in Voice over IP and Video over IP, Quality of Services, and a Software Defined networking. A Working knowledge in Linux networking, Python scripting, HTML/CSS, Javascript and REST Programming.

$100.00 /hr
0 hours

Hector Bravo

Hector Bravo

IT Expert - Project Manager - SCRUM, PMP, ITIL, VCP, MCSE, MCDBA

Panama - Tests: 13

- Professional Project Management / Agile Project Management / Scrum - IT Management / Strategy / ITIL Design, Plan, Implement and Support for: - Microsoft Office 365 - Windows Azure / Amazon EC2 - Microsoft Lync / Skype for Business - Microsoft Sharepoint - Microsoft Exchange - Microsoft SQL Server - Microsoft Active Directory, ADFS - Microsoft Dynamics CRM - Windows Server / Hyper-V - Microsoft ISA/TMG/UAG - Microsoft SSCM, SCVMM, DPM - Voice Integration with Lync - VMWare vSphere / ESXi - VMWare Site Recovery Manager (SRM)

Groups: Microsoft Certified Professionals

88% Job Success
$33.33 /hr
930 hours

Oren Shveibish

Oren Shveibish

Senior Software Engineer


Innovative Software Engineer and Architect with extensive experience in design and development of complex, multi-threaded, time and mission critical software using Microsoft .NET technology stack. I have over 12 year's experience with Object Oriented Analysis and Design in agile product development environment, specialising in multi-user, time critical, secure windows and web services and applications. Experienced in a wide range of Microsoft products including Lync/OCS, SQL Server, Office Add-ins, CRM, SharePoint, Active Directory, Exchange, IIS, and Azure. My background is a C++ development for real time control of hardware. with expert knowledge of VoIP, SIP, audio codecs and integration with various PBX and Media Gateways (e.g. Alcatel OXE and Cisco Call Manager).

$88.89 /hr
0 hours

Brian S.

Brian S. Agency Contractor

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

United States - 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