Hi I have been developing software applications for 8 years. I am 24/7 hardworking professional developer with rich experiences in various programming fields. I am mainly working with high-skill technologies like Voip systems, Streaming systems and Video conferencing systems. My professional technologies: -Voip administration and development Skills: Asterisk, Freepbx, Linphone, CSipSimple, Dubangou, CallCenter -Streaming solution development Skills: Wowza, Live555, CRtmpServer, FFMpeg, VLC, OpenCV -Unity 2D/3D game development Skills: AR,VR, Oculus -iOS/Android development Skills: Objective-C, Swift, Java, JNI -Xamarin / Titanium / Qt Application Development -Social application development My supported platforms: -iOS/Android -Mac/Linux/Windows My development languages: -C/C++/C# -Java/JNI -Objective-C / Swift -Delphi I can help you perfectly with my rich experiences. Thanks
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Hire a skilled freelance Asterisk developer to build multi-protocol, real-time communications applications solutions for all your needs. Experienced Asterisk contractors can set up predictive dialers, call centers, VoIP gateways, conference servers, IP PBX systems and other applications.
Asterisk is a popular open source framework for building communications applications. The platform uses scripting languages to create business phone systems, conference bridges and other communications protocols and technologies. On oDesk, the world’s largest online workplace, companies hire Asterisk experts to handle all their communication needs.
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Over the last 4.5 years, I have developed a wide range of IT solutions including VoIP, Web and Mobile development for small businesses and startup companies as well as for large companies. I have experience in VoIP, FreeSwitch, Opensips, Kamailio, Asterisk, FreePBX, A2billing, Linux, Opensource Consulting, MySQL, PHP, Joomla, Android, asp.net-mvc, c#, .net-framwork etc. I have developed class4-class5 Soft Switches, SIP Proxy, FAX Servers, Fax2mail, Fax over IP, Messaging Servers, Session Border Controllers, IVR application, Web Applications and many others. My core competency lies in complete end to end IT solutions for VoIP, Web and Mobile technologies.
Working for last 5 years on Linux Server Management, DBA, C#,SQL,.NET , ASP , PHP, VOIP Soft switch and numerous criteria of computer science. Also build Mobile Apps for android, cross-platform apps. Strong working background on Database, Relational Algebra, Algorithms and Network Topology. Continuously looking for new technology and updates.
Debasis B. Agency Contractor
Highly experienced expert designer and coder for new product development in Salesforce Apex and VisualForce, Force.com sites, VoIP, IVRs, SMS, Php-MySQL, Drupal, Netsuite, OpenERP, Amazon AWS, Amazon DynamoDB, Filemaker Pro and Cloud computing technologies. Creative problem solving ability for your complex apex, visualforce and siteforce requirements, who can elevate your organizations high-tech capability to the next level. Widely travelled in many countries including USA, Australia, UK, Europe, Asia Pacific countries on project implementations and thoroughly understand your global project outlook requirements. Have more than 17 years of commercial product development experience as Freelance Coder and remote development manager. Extensive experience in wide range of new commercial custom product development from inception primarily in VoIP, IVRs, SMS, mobile, Cloud ERP, Banking, B2B and B2C related sectors for diversed organizations situated in more than 10 countries. Lead complete IT development of US, UK and Australian companies. In-depth knowledge in Asterisk, Red5, C, C++, Php - MySQL, Perl, SIP, H.323, streaming video, premium IVRS and SMS applications, SalesForce and Force.com technologies, Apex coding, VisualForce, Netsuite cloud ERP, Drupal, FileMaker Pro 11, FileMaker Php, Quickbooks integration, AutoIT, Amazon EC2 based solutions, Ajax, jQuery & jQueryUI. My core competency lies in production level product development as top designer / programmer / developer from inception, and here I am seeking further such opportunities to design and develop professional, stable, bug-free products for your business.
Over the last 9 years I've been working in web hosting industry and have a hand on experience of Linux/Unix system and A+ expertise in all Linux troubleshooting. I've expertise of Amazone, RackSpace, VMWare ESXi(4,5), XenServer, Load Balancer, WHM/Cpanel, Plesk, ISPcp, ISPConfig, DirectAdmin, VirtualMin, Apache, MySQL, Postfix, Dovecot, Exim, Squid, OpenVPN, OpenSSL, Hadoop, Hbase, Solr, Redis, FFmpeg, FFmpeg-php, SugarCRM, ViciDial, VtigerCRM, Shell Scripting, Perl Scripting, PHP, RoundCube, SquerrileMail, Enterprise level Hosting/Mail Servers like Zimbra for large scale Setup with full security features and System Backups. I also have VOIP expertise and following are my favorite Asterisk PBX, SS7 Signaling,IVR Systems, Dictation Systems.
Last 14 years I worked as Internet Provider admin, with linux and perl in Brazil. I worked for 2,5 years as Voip Engineer with asterisk, openser and opensips in Australia. Worked for 1,5 years in Japan with Flex, now, I'm back to my home in Brazil, with my family working with Flex and Java at my new company a00s.com. We make software ERP to manage money and accounting for business companies. At my free time I like to discovery things by programing, some times with stock markets, some times like now, looking for math formula for prime numbers. I'm looking for some freelance job to increase my incomming, Once I want to go again to japan in this 2013.
VoIP and network engineer/administrator with more than 6 years of experience in design, planning and implementation Unified Communication and IP centrex solutions, large scale telephone and Cisco data networks. Deep understanding of asterisk PBX, FreePBX, Elastix, SER and OpenSER/Kamailio SIP servers. Fluent in SIP, SS7, IAX, RTP, T38, ISDN, STUN, SDP, Ethernet, TCP/IP, DHCP protocols, Cisco routing (BGP, OSPF), switching, LAN, WAN, ACL, QoS, VLAN.
From last two years i am working on asterisk, free radius and mysql.I developed a full voip application which consist of * Calling Card Application * Soft phone to PSTN calls * DID to Soft Phone * DID to Forwarded no. * SIP to SIP calls * Call routing besides these i add the asterisk realtime functionality using mysql database and for billing i use the free radius server. So my core competencies are asterisk, perl, python, free radius, mysql DB and working on linux plat form.