VoIP Consultants & Developers

Showing 1,126 freelancers

VoIP Consultants & Developers

Showing 1,126 freelancers

  • Android programmer with ffmpeg and parse.com skills

    If you are looking for Android developer, especially if you need to handle multimedia data in your project, likely I will be excellent choice for you. Handling multimedia is very tough, average programmer who wasn't previously working on it … more

    If you are looking for Android developer, especially if you need to handle multimedia data in your project, likely I will be excellent choice for you. Handling multimedia is very tough, average programmer who wasn't previously working on it will spend weeks doing some simple task like adding noise to video(know it from my own experience) while I would be able to accomplish it in hours and with highest quality. If you choose me, you will be sure that video will play on all kind of devices(had opportunity to test on a lot of them so I know which options work and which doesn't), that I will compile latest FFmpeg version for you(that's important because it progresses fast, in recent builds there are better performance and most importantly less memory leaks). Any usage of FFmpeg will not scare me, I can compile it with x264 for high-quality video, with mp3lame for exporting mp3 or any other lib you want, I can add any effects, I can work with FFmpeg through command-line by using ffmpeg4android lib or work with it through NDK. Another strong part of my skills is Parse.com . This service allows to create client-server applications without writing backend. This way you will save money on backend programmer, and will have code of better quality – situations like caching, losing Internet connection etc. is properly addressed there, much better than typically written backend. Consider hiring me if you want to develop new client-server application, or want to maintain existing Parse app. Apart from my extensive knowledge of FFmpeg+Android and Parse, I have great skills of general Android programming. As I'm always thinking about creating high-quality code, plus having knowledge of design patterns, you will end up spending less as adding new features will not turn your app into unmaintainable Big Ball of Mud. Having experience of working through NDK, managing sources through git, working with many different 3rd-party libs like Facebook API, Instagram API, Vine API, Jsoup etc. I will ensure that task will be accomplished in shortest time possible, plus I can learn new things very quick, any lib your project need - will be attached in no time. Always thinking constructively, I will propose you how to improve your app if such way exists, I will not just mindlessly do tasks you give me - as I'm thinking on overall situation, any issues will be not hidden, but presented to you and addressed if you choose to do it. I'm thinking about performance too. Users will strongly dislike if app works too slow, or drains too much battery. As a winner of regional ACM ICPC programming contest, which is focused on creating fast and memory-efficient code in short time, I have great understanding where app may actually lose speed, it won't happen, app will work great. Communication is also good part, I can adapt to nearly any time zone you want. Apart from knowing Android, I can program Flash 2D games too. I prefer to use Flashpunk framework for it, as it is very fast to create games using it. Also you may be possibly interested in C++(with Qt if needed), or Game Maker from me, can do it too. Hire me today - you will not regret.  less

    android-app-development c java game-development actionscript-3 c++ ffmpeg git facebook-api qt 00 more less
    • $50.00 HOURLY RATE
    • 5.0
    • 465 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 5 PORTFOLIO ITEMS
    • 12 TESTS
    GROUPS:
  • IOS Developer, Netsuite Consultant, C#.Net Consultant, SQL Consultant

    5 Years in Software Development Over 2 years of Rockstar Netsuite Developing. - Netsuite API (Server and Client), Webservices(PHP, JAVA, C#), Workflow - Netsuite Shopping Cart, Checkout Development, My Account, ShopFlow - Netsuite Form Customizations, and others - Netsuite Implementation and Migration - Saved … more

    5 Years in Software Development Over 2 years of Rockstar Netsuite Developing. - Netsuite API (Server and Client), Webservices(PHP, JAVA, C#), Workflow - Netsuite Shopping Cart, Checkout Development, My Account, ShopFlow - Netsuite Form Customizations, and others - Netsuite Implementation and Migration - Saved Searches - SEO Optimization Over 2 and a half Years in C# development and support - WPF, Sharepoint, ASP.Net, Winforms Over 2 and a half Years of MS SQL development 1 Year in IOS development with 2 apps in the apps store Programming Skills - C#, C++, JAVA, SQL, TSQL, PLSQL, Javascript, JQuery, JSON, Lua, IOS3.5-7, PHP, CSS3, HTML5, Google API  less

    ios-development microsoft-visual-c++ c# netsuite-development javascript microsoft-sql-server-development 00 more less
    • $41.11 HOURLY RATE
    • 4.8
    • 1014 HOURS
    • PHILIPPINES
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 7 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
  • GoAutodial and ViciDial Expert, Tech Support, Administrator

    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 … more

    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.  less

    asterisk vicidial php crm technical-support telemarketing phone-support website-development data-entry network-administration computer-networking sql mysql technical-analysis lead-generation windows-administration call-center-management automated-call-distribution 00 more less
    • $5.56 HOURLY RATE
    • 4.5
    • 3267 HOURS
    • PHILIPPINES
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 2 TESTS
  • 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
  • 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
    • 762 HOURS
    • INDIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 2 TESTS
    GROUPS:
  • 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
  • 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
  • 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
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