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Last updated: October 1, 2015

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Tushar Jain

Tushar Jain

Voice & Data Consultant

Australia - Tests: 2

Tushar is a seasoned professional with 11+ years of experience in managing network operations in a service provider / NOC environment. Experienced & Skilled in Telecoms, MPLS, BGP, VoIP, SIP, Network Support and Managed Services, Remote Network Monitoring, Networking Services, Carrier Services , Telephony Services, IT Managed Network Services, Remote NOC Support. With an In depth design, implementation and support experience in Integrated network management system, Prepaid billing system, Switching, VOIP & Telephony services, SIP Trunking and many more areas, he brings with him a wide experience and has proven to be of great value to all the organizations and clients he has worked for.

$22.22 /hr
0 hours

Ruben Semerjyan

Ruben Semerjyan

Inovative Mobile VOIP, Social, Audio/Video Streaming Developer

Armenia - Tests: 2 - Portfolio: 1

I am an innovative, extremely detail oriented and perfectionist Software Development Architect, with expert knowledge in VoIP, audio/video streaming and processing, messaging and social media. My a little over 8 years of experience in VoIP industry gave me a strong knowledge of the protocols, technologies and available solutions. 3 years of successful mobile applications development, architect and project management gave me confidence in creating robust and technologically challenging applications. I am passionate about developing robust, innovative and leading edge applications, getting increasingly challenging assignments and applying disruptive technologies. Looking for a work on technologically challenging projects (in an agile environment preferably), while offering my expert knowledge base, ability to learn quickly and apply new techniques. I usually bid slower than others, because of reading the full job description, trying to estimate all requirements, needed technologies and solutions.

100% Job Success
$25.00 /hr
28 hours

Juan Pablo Lorenzetti

Juan Pablo Lorenzetti

System Enginner

Belize - Tests: 2

i have more than 10 years experience in the telecommunication field. (mostly in small companies, a 1 man IT dept.) Skills on: 1. administering and setting up platforms for services (prepaid cards, IVR, sms, etc) 2. developing software to perform tasks and/or provide services. 3. Strong background developing using open source software for different tasks/services. 4. Web development using php/javascript (jquery, etc) 5. strong knowledge in the linux OS and its tools (automating tasks, bash scripting,etc) 6. strong knowledge in the C/C++,pyhton,perl,java. 7. Integration of platforms/services. Latest projects of the past 3 years (list is too long otherwise): 1. Implemented a AAA, using open source software, for a 3G WCMDA network. 2. Implemented a company PBX with more than 150 extensions, interconnected to the PSTN with personalized scripts for the various dept within the company. 3. Implemented a 15+ call center using a virtual PBX, using open source software, the call center did not have infrastructure, the physical PBX was located at an operator and the agents used mobiles to receive calls, all features were implemented such as queues, welcome message, email sent to agents for missed calls, voicemail, after hour annoucement, etc etc 4. Implementation of different protocols to interconnect with various elements within a telecom network, such as MML interfaces for service provisioning, smpp to provide sms based services, radius/diameter to provide real time charging, etc etc 5. etc

$25.00 /hr
0 hours

Oubram Mohamed

Oubram Mohamed Agency Contractor

Asterisk/Elastix/Freepbx/VoIP/Chan Dongle/Raspberry/Network specialist

Morocco - Tests: 3 - Portfolio: 2

i am a VoIP specialist dealing with Asterisk and voip billing Asterisk based servers: Freepbx Elastix A2billing and Kamailio. i have collected much experience in installing and configuring VoIP servers and giving support for costumers during my last job position at Voipmaroc and Nogafone. during my last jobs i was charged to deploy a voip call center based on Elastix for DYARelmansour , a construction company leader in Morocco , and a call center ViciDial for EIGENVALUE based in Morocco and for many end user of IPBX appliances and customized IPbx installations based on asterisk. I have setup many Asterisk servers for many customers in Freelancing and Deployed many Gsmgateways and Asterisk based Gsmgateways. I have also installed and deployed Raspberry and Huawei Dongles as Cheap Gsmgateways . besides , i have Also setup some complex VoIP topologies for call Routing and Terminations via VPN . my diplomat at network engineering and Centos Linux experience helped me to devolope my skills in VoIP. i am ready to serve.

Associated with: BRAMZ, BlueGoose Tech

86% Job Success
$21.11 /hr
232 hours

Ismir S.

Ismir S.

VoIP/Asterisk/FreePBX/Cisco/Linux Specialist

Austria - Tests: 5

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.

$38.89 /hr
1,059 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

Kirill P.

Kirill P.

Asterisk Expert and System Administrator

Russia - Tests: 10

I work on IT more than 12 years. VOIP/Asterisk Developer, Expert System Administrator and Network Administrator, Perl Programmer. Generally, I develop solutions based on Asterisk and speech technologies (speech synthesis and speech recognition systems), complex IVRs, integration with external sources and databases, custom click-to-call and callback systems, etc. I prefer custom development for Asterisk and FreeSWITCH. Usually, I use Perl for development. I have huge experience in solutions based on Asterisk such as FreePBX, Elastix, Trixbox, vicidial, etc. Also I support critical 24x7 systems, administration networks and servers, perform IT consulting, etc.

100% Job Success
$25.00 /hr
47 hours