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Job Description

We are looking for a senior VoIP Developer to develop VoIP applications. We are hiring an experienced and passionate senior VoIP Developer to design, develop and enhance innovative and robust VoIP Applications with our team. 



  • Design, code, Analyze, and test systems for VoIP applications.
  • Handle software updates, patches, and bug fixes. 
  • Communicate with team of developers, designers, project managers, and other personnel to ship new features. 
  • Maintain project, drafts, files, codes and scripts in an organized manner. 


Requirements: Proficient with VoIP protocol SIP and XMPP protocol Have about 4 years of VoIP development experience Should have worked in development of SIP Proxy, B2BUA servers using Asterisk/Opensips/Kamilio

IMS architecture understanding will be great benefit

Should be able to develop communication services in Java platform (JAIN-SLEE/SIP-Servlet)

Should be proficient with troubleshooting tools like wireshark, tshark, putty or ssh etc

Understanding of TLS/UDP/TCP protocols

Basic Java development skill set if huge plus

Should be able to communicate with client side teams to help develop and troubleshoot Apps

Logs management and Stress testing of servers using SIPp

VoIP Security and Call-center solution overview

Should have basic understanding of CRM applications and configurations

Understanding of Openfire chatting server is also a huge plus.

Building of Billing systems using AGI/AMI  based on Asterisk system would be plus

Job Details

Functional Area:
Total Positions:
4 Posts
Job Shift:
First Shift (Day)
Job Type:
Full Time/Permanent
Job Location:
No Preference
Minimum Education:
Degree Title:
Career Level:
Experienced Professional
Minimum Experience:
4 Years
Apply Before:
Oct 16, 2018
Posting Date:
Sep 17, 2018
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Innovative Solutions

Information Technology · 11-50 employees - Karachi

Innovative Solutions is a game development and financial IT consultancy firm based in Karachi, Pakistan. Our target is to become a leading company in chess game development and financial IT consultancy sectors. We are looking for talented individuals who have excellent technical and educational back ...Read More

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