VoIP Consultants & Developers

Showing 4,075 freelancers

VoIP Consultants & Developers

Showing 4,075 freelancers

  • Software / Web Developer

    IT enthusiast that has interest for the newest and latest technologies available. I am a multi-paradigm programmer. And I can code web application in PHP,Javascript,HTML or in native applications development like C#/.NET,C/C++,Objective C. I … more

    IT enthusiast that has interest for the newest and latest technologies available. I am a multi-paradigm programmer. And I can code web application in PHP,Javascript,HTML or in native applications development like C#/.NET,C/C++,Objective C. I am also exprienced in Linux,Mac OSX and Windows. Currently I love WinRT in Windows 8 , Javascript , NodeJS and HTML5 I am also studying system/application penetration and hacking.  less

    c# node.js windows-8-app-development javascript php .net-framework codeigniter html5 windows-phone-7-development mono 00 more less
    • $22.22 HOURLY RATE
    • 4.9
    • 1184 HOURS
    • PHILIPPINES
    • LAST ACTIVE
    • 7 PORTFOLIO ITEMS
    • 8 TESTS
    GROUPS:
  • Network/Security/VoIP Specialist (Cisco, Linux, Asterisk)

    I am a Network/Security/Voice Specialist with 5 year experience. I specialize in designing and implementing open-source based solutions such as CentOS, Debian, Ubuntu, Postfix, BIND, Asterisk, FreePBX, Trixbox, Elastix, A2billing, fail2ban, pfsesne. I have every day hands-on experience … more

    I am a Network/Security/Voice Specialist with 5 year experience. I specialize in designing and implementing open-source based solutions such as CentOS, Debian, Ubuntu, Postfix, BIND, Asterisk, FreePBX, Trixbox, Elastix, A2billing, fail2ban, pfsesne. I have every day hands-on experience in designing, configuring and troubleshooting of complex IP networks based on Cisco, Juniper, Nortel, Huawei, Fortinet, CheckPoint equipment. I have in-depth knowledge of the following technologies : LAN, MAN, WAN, IP VPN, RAS, IPSec, SSL VPN, Frame-Relay, Routing, Switching, Load-balancing, Firewalls , Intrusion Prevention Systems.  less

    asterisk trixbox freepbx cisco-routers vpn 00 more less
    • $22.22 HOURLY RATE
    • 4.9
    • 87 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 2 TESTS
  • Programming is my addiction. Software is the winner.

    Applying to your job posting is the first thing that I could do to prove my skill set :). Okay, Below is the list in which I'm comfortable to work diligently. 1) Hire me for integrating APIs of Google, Facebook … more

    Applying to your job posting is the first thing that I could do to prove my skill set :). Okay, Below is the list in which I'm comfortable to work diligently. 1) Hire me for integrating APIs of Google, Facebook, Twitter, PayPal, Authorize.Net, Skrill (MoneyBookers), Aweber, MailChimp, ZenDesk, Twilio (VOIP, SMS and other telecommunication services provider) and similar. I love doing this and I'm very good in this. All time favorite. 2) Hire me for WP (WordPress) Development & Customization's. Plugins, Themes, whatever be the task/work it is. I do have very good experience in dealing with & using its API (WP action hooks & filters). 3) Executed (Developed) some bigger projects from scratch (start to end) in PHP individually. So, grabbing the concepts and customizing any existing portal, CMS, eCommerce store developed in PHP is very easy for me. Hire me for this type of works. I know my way around's. Walked a lot on this. 4) Chrome Extensions, Firefox add-on's, Android apps (using PhoneGap) and Data scrappers. Lacks experience in Android APPS else all is perfect. "Get it done" is in my attitude. Yours truly, Krishna  less

    mysql css3 jquery javascript j2me php facebook-api data-scraping twitter-api firefox-plugin-development phonegap twilio-api mailchimp aweber zendesk paypal-integration authorize.net chrome-extension 00 more less
    • $27.78 HOURLY RATE
    • 5.0
    • 770 HOURS
    • INDIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 2 TESTS
    GROUPS:
  • Cisco Telecommunications Engineer - Powering productivity through Comm

    Who I am... Network Engineer with 3+ years of experience working with a variety of technologies from different vendor like Cisco, VMware, Microsoft, Watchguard, Barracuda, etc. I had designed and implemented networks from scratch starting on the infrastructure (Routing and … more

    Who I am... Network Engineer with 3+ years of experience working with a variety of technologies from different vendor like Cisco, VMware, Microsoft, Watchguard, Barracuda, etc. I had designed and implemented networks from scratch starting on the infrastructure (Routing and Switching), Security and finally the Applications (Unified Communications and Collaboration). My Mission... I specialized on designing and implementing network solutions for small, medium and large businesses in many different vertical markets like the oil and gas industry, banking, food and beverages industry and others. I had achieved customer satisfaction 100% of the time and exceeded their expectations while staying on-budget, meeting deadlines and finding new business opportunities inside the company and the customers. Always looking for the biggest challenges that help me excel myself not only in the networking field, but also in the business management side of the company making myself an integral and interdisciplinary engineer capable of achieving the impossible. Cisco certified network professional with CCNP Voice, CCNP R&S and many other specialist certifications. VMware certified as VCP.  less

    cisco-ios windows-administration linux-system-administration cisco-voip network-administration computer-networking voip-administration 00 more less
    • $40.00 HOURLY RATE
    • 5.0
    • 244 HOURS
    • VENEZUELA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 6 TESTS
  • Senior system administrator and PHP - C - Perl developer

    Very skilled Unix system administrator, with lot of experience in Linux ( Centos, Redhat, Fedora, Ubuntu, Debian, Gentoo, Slackware ), Solaris, xBSD ( FreeBSD, OpenBSD), vpn ( openswan - ipsec, openvpn, l2tp, pptp ), clustering ( LInux Virtual Server, Linux HA, vrrp, Solaris Cluster ), cloud computing, load … more

    Very skilled Unix system administrator, with lot of experience in Linux ( Centos, Redhat, Fedora, Ubuntu, Debian, Gentoo, Slackware ), Solaris, xBSD ( FreeBSD, OpenBSD), vpn ( openswan - ipsec, openvpn, l2tp, pptp ), clustering ( LInux Virtual Server, Linux HA, vrrp, Solaris Cluster ), cloud computing, load balancing ( f5, haproxy ), VoIP ( asterisk ), databases ( MySQL, PostgreSQL), LDAP, web services ( Apache, Nginx, varnish ), security ( penetration testing, firewall policy design ), control panels ( CPanel, Plesk, Virtualmin, Ensim ), Virtualization ( VMWare Virtual infrastructure - VSphere, amazon EC2 ). As for Developing I am very experienced in C, PHP, Perl, javascript, ajax and many more to list.  less

    linux-system-administration mysql php asterisk audio-mixing audio-editing html css perl varnish-cache firewalls security network-security ipsec openvpn iptables penetration-testing postfix load-balancing pci-compliance cpanel zimbra-administration voip-administration 00 more less
    • $16.67 HOURLY RATE
    • 5.0
    • 841 HOURS
    • GREECE
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 11 TESTS
  • Software Engg

    - Web Application Developer, Database Administrator, and Software Project Manager in a wide variety of business applications. Particularly interested in client/server and relational database design using My SQL and MS-SQL Server. - Managing and configuring data replication Servers Using MySQL Server … more

    - Web Application Developer, Database Administrator, and Software Project Manager in a wide variety of business applications. Particularly interested in client/server and relational database design using My SQL and MS-SQL Server. - Managing and configuring data replication Servers Using MySQL Server - Network Manager with hands on experience of managing 150 node Network and managing and configuring network equipment including exchange server and Active Directory configuration - Implementing Network security using ISA Server and various opensource tools including astro , Microtik. - Configuring ,customization and managing Pridictive Dialers like Goautodial,elastix etc  less

    php mysql symfony doctrine-orm joomla wordpress opencart magento oscommerce jquery html ajax java python zencart phpmyadmin codeigniter javascript adobe-flash adobe-flex yii-framework 00 more less
    • $16.67 HOURLY RATE
    • 5.0
    • 46 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 2 TESTS
    GROUPS:
  • Network Engineer

    Fast learner, fast worker, quality contractor. Can administer the network, build scalable network infrastructure, implement various network services. I have experience in network design and security tuning, always available to discuss new opportunities. Excellence in troubleshooting networking problems Experience with … more

    Fast learner, fast worker, quality contractor. Can administer the network, build scalable network infrastructure, implement various network services. I have experience in network design and security tuning, always available to discuss new opportunities. Excellence in troubleshooting networking problems Experience with: Cisco 800 Series ISR, Cisco 1800/1900, Cisco 2800/2900 Series ISR, 3900 Series ISR Cisco Catalyst 2960, 3550, 3560, 3750, 4500, SMB-300 Cisco ASA and Cisco PIX firewalls FortiWeb web firewall Juniper Devices: SRX 240H-Poe, SRX 1400 and SRX 3400 firewalls, Juniper EX 2200, 4200 and 4500 switches Security Technology VPNs (Site-to-Site, IPSec, Remote Access, SSL, WebVPN, GET VPN, DMVPN, ezVPN), Cryptography, AAA, Radius, TACACS+, ACL, NBAR, IOS Firewall, IOS Security, 802.1x, CBAC, Cisco Secure ACS, Cisco VPN Client, Cisco MARS. Routing Static Routing, IGRP, EIGRP, OSPF, PBR, Route Filtering, Redistribution, Summarization Features & Services IOS Features, HSRP, IRDP, NAT, SNMP, SYSLOG, NTP, DHCP, DNS, HTTP Voice over IP Cisco Unified Communications Manager(CUCM), Call Manager Express (CME),  less

    cisco-routers cisco-ios vpn security 00 more less
    • $55.56 HOURLY RATE
    • 5.0
    • 81 HOURS
    • GEORGIA
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 5 TESTS
  • Expert Voice integration

    Work on Asterisk / Freeswitch like VOIP platform and integrate and develop with various technologies like Java / C/C++ / DOT NET and PHP, Python . Higher end skills includes socket programming , thread pool , Java Hibernate and NIO , Eclipse RCP , Python Django and … more

    Work on Asterisk / Freeswitch like VOIP platform and integrate and develop with various technologies like Java / C/C++ / DOT NET and PHP, Python . Higher end skills includes socket programming , thread pool , Java Hibernate and NIO , Eclipse RCP , Python Django and twister . The experience in setting up complex projects with development of Web Server , e-mail spider , using C as a web programming language has been the major achievements . Very high end database optimisation using memcached , voltdb . and use of event library with thread pools , reusable sockets on VOIP ( SIP ) and ISDN PRI .  less

    asterisk asp.net java javascript freeswitch mysql python eclipse hibernate django-framework c c++ wordpress php joomla magento 00 more less
    • $22.22 HOURLY RATE
    • 4.9
    • 506 HOURS
    • INDIA
    • LAST ACTIVE
    • 3 PORTFOLIO ITEMS
    • 3 TESTS
  • voip developer

    digium certified asterisk administrator.Working on asterisk nearly 5 years and developed. 1. voip billing application with asterisk and freeradius 2. call center application with gotutoidal,vicidial 3. work all on freepbx interfaces like elastix,trixbox,PBX in a Flash … more

    digium certified asterisk administrator.Working on asterisk nearly 5 years and developed. 1. voip billing application with asterisk and freeradius 2. call center application with gotutoidal,vicidial 3. work all on freepbx interfaces like elastix,trixbox,PBX in a Flash and AsteriskNow. 4. Develop voice chat applicatio. 5. confiugure pri's of ata,windstream,and cbeyond proiders and pakistan telecome also. 6. work also on Asterisk Digium cards with fxo and fxs channels. 7. A2billing application with customize new features. 8. IVR solution 9. can work on Perl and PHP AGI's 10. Linux system Administrator 12. MCITP certified 12. PHP web developer  less

    asterisk 00 more less
    • $17.78 HOURLY RATE
    • 4.5
    • 300 HOURS
    • PAKISTAN
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 2 TESTS
  • Highly-Skilled Mobile Developer(iOS/Android/Cocos2D)

    Expert iOS/Android Mobile App Developer, skilled in Cocos2D game platforms also. I have a development experience of more than 4 years and delivered more than 20 apps so far. I am passionate about my work. Professionalism, Creativity and Quality … more

    Expert iOS/Android Mobile App Developer, skilled in Cocos2D game platforms also. I have a development experience of more than 4 years and delivered more than 20 apps so far. I am passionate about my work. Professionalism, Creativity and Quality have been my strengths throughout my experience. I can do a job Smartly, Effectively and Quickly. My ultimate goal is to deliver the best quality products to my clients and building long term association with them. I am proficient in following technologies - Objective C/XCode, iPhone SDK and iPad development. - 2D&3D game development using Cocos2D, Cocos2DX and Unity3D. - Android Native SDK, PhoneGap, Corona SDK. My skills and capabilities are following. 1. Applications - Xcode, iOS SDK, iOS5, iOS6, iOS7 - Webservice Backend API development using PHP, JSON and/or XML.. - Great UI/UX design and customization. - Google Map, Geolocation & GPS. - Social Network such as Facebook, Twitter, Google+, YouTube, LinkedIn, Instagram. - Push Notification, Photo Manipulation app development including customized filters and collage. 2. Games - Cocos2D, Cocos2Dx, Corona, OpenGL. - Game Center, In-App Purchase, Multiplayer Game - iAd, Adwirl, Admob, Chartboost, TapJoy. 3. Business analysis systems Flurry, Source Repository, Testflight, Github, SVN, BitBucket. I always try my best to be in the same line with the high technologies. I am proud of my skills and experiences but I don't pretend to do everything. If I can not do I'll clearly say "No, it's not my area". My motto is "Be ahead and Be honest!". Thank You for reading. I assure you for the top quality products and long term association.  less

    iphone-app-development android-app-development mobile-app-development php web-design unity-3d cocos2d cocoa-touch java apple-xcode ios-development game-development box2d-game-engine phonegap appcelerator-titanium 00 more less
    • $15.00 HOURLY RATE
    • 5.0
    • 223 HOURS
    • INDIA
    • LAST ACTIVE
    • 19 PORTFOLIO ITEMS
    • 2 TESTS
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