Job Description

• Strong programming background especially in object-oriented design, algorithm design, problem solving, and complexity analysis. 
• Administration and management of SMPP / API based SMS technologies.
• System administration of Asterisk PBX /IVR / Call center servers located globally. 
• Assist team in designing programs and databases. 
• Development of monitoring dashboards / tools to ensure 100% monitoring.
• Work with team to perform to ensure security of all VoIP devices and servers, service quality, redundancy of voice paths and service optimization. 
• Analysis of all Linux based servers with respect to QoS, scalability, utilization and high availability. 
• Perform continuous research work on latest technologies for improving Telephony infrastructure. 
• Development of different application which will be integrated with telephony system to enhance monitoring and daily tasks. 
• Development of automation scripts in Python, PHP, Perl etc to automate different tasks and activities in the system.

We are looking for

• Education: BS/MS (CS, SE, IT)
• Experience: 4 years of experience of VoIP, SMS and development

Skills

• Good understanding of SMPP protocol
• Expertise in Javascript, NodeJS, Python, PHP, Perl, Bash etc.
• Database design and SQL Queries
• Hands on experience on Linux (Red-hat/CentOS).
• Good understanding of API, SIP, SDP, RTP, RTCP, IAX, WS, WSS, TLS etc.
• Good understanding of Asterisk technologies such as AGI, ARI, queues, conferencing etc.
• Good knowledge on configuring SIP proxies and B2BUAs.
• Experience troubleshooting carrier interconnection and VoIP related issues.
• Hand on experience on Asterisk, Kamalio, Opensips or Freeswitch.

Specific Tools, Technologies, or Equipment Skills

• Asterisk
• Linux
• NodeJS
• Freeswitch
• OpenSIP/Kamalio

Following certifications would be plus :

• dCAP
• RHCE Certified

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