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Last updated: October 1, 2015

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Suren Karapetyan

Suren Karapetyan

Senior System/Network Administrator (devops)

Armenia - Tests: 8

An ambitious *nix System and Network Administrator with eight years' experience working in ISPs and other service providers maintaining existing and designing new infrastructure. DevOps skills which help to bridge sysadmins' and developers' teams. Master's degree in Math Sciences. I'm looking for interesting projects which use new/young technologies and provide new challenges. Would also be great to work with interesting people.

97% Job Success
$45.00 /hr
1,163 hours

Yuriy N.

Yuriy N. Agency Contractor

VoIP/Freeswitch/Asterisk/OpenSIPS/Kamailio/Linux/Network/ Enthusiast

Russia - Tests: 1 - Portfolio: 1

Telecom Software and Network Engineer more than 7th years in companies - communication providers. I have extensive experience with deploying a complete infrastructure of voip provider, using OpenSource telephony technologies such as freeswitch, asterisk, OpenSIPS\Kamailio, kazoo, etc. Mostly I'm dealing with emerging startups or with small but accomplished voip companies which want to improve\reorganize their infrastructure; create something new or fix some issue on their network. So it is main area but sure I can help with other projects that correspond to my list of skills.

Associated with: Nasida

100% Job Success
$40.00 /hr
1,118 hours

Vijay singh R.

Vijay singh R. Agency Contractor

Expert in SMS gateways (Twilio, Plivo), OpenVBX, SIP

India - Tests: 8 - Portfolio: 8

A results-driven, customer-focused, articulate and analytical Software Engineer . Strong in design and integration problem solving skills. Expert in Twilio,NopCommerce,C#,,ASP.NET 3.5/4.0/4.5, MVC 4.0, WCF, SQL Server 2000-2008-2012, JavaScript, HTML, AJAX and web 2.0 best practices.Expert in working on payment gateways like PayPal Integration and Various API integration. **During my development experience, I have abundance working experience with SMS API integration and development projects in .NET and PHP where I have implemented functionalities like: - Inbound/Outbound Call/SMS - Group SMS - Call recording - Call forwarding - Reporting etc.. I also have hands on experience in the following areas: MS Technologies, Ajax, Jquery, OOPs, and software design. •Worked in technologies provided by .Net Framework like Web applications, ASP.NET, AJAX. •Have worked on various market standards and followed best practices like XML, CSS, JavaScript, Jquery. •Have worked on web application that follows 3-tier architecture. •Good experience in Database design and SQL Server 2005 including developing stored procedures, taking database backups and restoring them. •Having good skills in converting business problems into technical solutions. •Having good ability in learning new things and applying them at work. •Having good experince in communicating with clients and understanding requirements. •Having good skills in team management, distribution of taks, project management.

Associated with: Kindlebit Solutions Pvt. Ltd.

86% Job Success
$14.00 /hr
2,226 hours

Sherwin D.

Sherwin D.

VoIP Expert / IP-PBX Specialist / Asterisk Ninja

Philippines - Tests: 4 - Portfolio: 17

Over 12 years hands-on experience. i have a great knowledge on VoIP Hardware and Applications from open source softswitches, MultiTenant PBX and predictive dialers (Asterisk, Freepbx, FusionPBX, BlueBox, Thirdlane, FreeSwitch, A2Billing, Elastix, Trixbox, Vicidial, GoAutoDial, etc), to licensed softswitches (Voipswitch, Nextone, Voicemaster, PortaOne, Mera, etc) and other VoIP gateways. I have at least currently total of 500 IP-PBX server deployments and also do provide VoIP termination services. I work as a part-time consultant for a number of VoIP companies in the Philippines. I have a broad knowledge about networking and wireless. this includes routers, firewalls, access points and VSAT. I also do hardware/software troubleshooting and web designing (joomla and wordpress) and basic programming (php, html and perl) I am confident that i can deliver any work satisfaction guaranteed

100% Job Success
$33.33 /hr
2,225 hours

Malay Patel

Malay Patel

VoIP/SIP, PHP Yii, MySQL Administration & Development

India - Tests: 7 - Portfolio: 3

Over the last couple of years, I have developed a wide range of IT solutions including VoIP, Web and Mobile development for small businesses and start-up companies as well as for large enterprises. Following are my area of experiences: -VoIP, SIP -FreeSwitch, ASTPP -Opensips -Kamailio -WebRTC -RTPproxy, RTPengine -Asterisk, FreePBX, A2billing -Linux & Opensource Consulting -MySQL, PHP, Wordpress, Apache -Android I provide following services: - Development of custom VoIP solutions with ongoing support - VoIP networks/projects: development and optimization - High Availability and Scalability solutions for VoIP networks. - VoIP Security and Hacker protection solutions. I provide following solutions: -High scalable Least Cost Routing(LCR) with Fail-Over -Session Border Controller(SBC) -Click to call -Class4 & Class5 Soft Switches -SIP Proxy Server, SIP Messaging Server, SIP Redirect Server, SIP Load Balance & Fail-Over -IVR Application -Fax over IP (FoIP), T38 Supported FAX Server, FAX to Email -Shoutcast Server -WebRTC client -PHP RESTfull API , Web Services for Mobile Application -Web Applications -Mobile Applications. My core competency lies in complete end to end IT solutions for VoIP, Web and Mobile technologies.

90% Job Success
$25.00 /hr
1,790 hours

Sayeed Islam

Sayeed Islam Agency Contractor

Systems Administrator/Architect/Integrator/AWS(EC2,VPC,S3,Cloufront)

Canada - Tests: 23 - Portfolio: 2

Hands-on proven experiences over the past 9 years leading all stages of system implement efforts, including requirements definition, design, architecture, testing and support in Linux(CentOS, Redhat, Ubuntu, Debian, Fedora, Gentoo, Suse. etc), Database, Windows, VoIP, Linux: Advance LAMP system administration, Oracle, MySQL, Postgres, Apache, Lighttpd, JBoss, Tomcat, Squid, HA Proxy, HA Linux, Clustering, High Availability, Proxy, VPN, Puppet, DNS, Zimbra, Cluster, Monitoring and Alerting system such as Nagios, Cacti, MRTG.Windows: Active Directory, Domain, Microsoft Exchange, IIS, MS SQL, Orion Monitoring and Alerting systemVoIP: Cisco, Quintum, SIP/H323/IAX2, Asterisk, AsteriskNow, Trixbox, FreePBX, Polycom, Sipura, AsteriskNOW, Digium, T1/E1, Yate, GNUGK, Vendor Specific Softswitch, Open Source, predictive dialer, Radius and billing system.I also have experiences in vendor specific VoIP Softswitches such as MERA, VoIPSwitch, Sysmaster, VoiceMaster and load balancer such as KEMP, Crescendo, HAProxy (open source), etc. I have acquired valuable system administration experience over the past nine years in all facets of administration, deployment, troubleshooting, installations, monitoring and maintenance for various system and application, hardware, and software. I possess a unique talent for delivering highly complex technical information into terms and concepts that the users can readily grasp. Furthermore, I am multi-task oriented, enjoy challenges, and continually stay abreast of the latest advancements in the IT field.

Groups: Microsoft Certified Professionals

Associated with: NixTroop

$40.00 /hr
3,463 hours

Ahad Ali

Ahad Ali

Voip Network Engineer

Pakistan - Tests: 1

Voip Network Engineer I am a talented and experienced Network Support Engineer. I have good experience of working with major international VOIP Carriers as technical support provider. Proficient in Monitoring, Troubleshooting, Complain Handling and Configuration of various VOIP Switches. You will find me extremely responsible professional.

$5.56 /hr
0 hours