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Senior Asterisk Developer/Telephony Engineer
Senior Asterisk Developer/Telephony Engineer
Fonada's logo

Senior Asterisk Developer/Telephony Engineer

Karandeep Singh's profile picture
Posted by Karandeep Singh
10 - 20 yrs
₹20L - ₹35L / yr
Noida
Skills
Asterisk
IVR
skill iconSpring Boot
RabbitMQ
Microservices
skill iconDocker
FreeSWITCH
skill iconKubernetes
Voice Over IP (VoIP)
SIP
Telephony

Role Overview

We are looking for a hands-on Senior Telephony Engineer who actively writes production-grade code and has deep experience with Asterisk-based systems, Java backend development, and high-scale dialler platforms.


Key Responsibilities

This is NOT an architecture-only role we need someone who can:

  • Write code
  • Debug real-time call issues
  • Build and optimize telephony flows end-to-end
  • Key Responsibilities (Hands-on Coding Focus)
  • Develop and maintain Asterisk dialplans, AGI scripts, and call flows
  • Build Java-based backend services for telephony control and orchestration
  • Implement and optimize predictive / preview / progressive diallers
  • Integrate telephony stack with:

Kafka

RabbitMQ

  • Write scalable code for call routing, retry logic, and queue handling
  • Work directly on SIP signalling, RTP flows, and debugging call issues
  • Handle real-time call events, CDR processing, and logging pipelines
  • Optimize systems for high concurrency (thousands of parallel calls)
  • Debug production issues like:

Call drops

Latency

One-way audio

SIP failures


Qualifications & Skills

  • Bachelors degree in Computer Engineering; Masters is a plus.
  • Telephony (Core Requirement)
  • Strong hands-on experience with Asterisk
  • Deep knowledge of:

SIP / RTP / VoIP

Dialplans

AGI / AMI

  • Experience building or maintaining dialers (very important)
  • Backend Development
  • Strong coding skills in Java (Spring Boot preferred)
  • Experience building microservices / APIs
  • Comfortable writing high-performance, low-latency code
  • Messaging & Event Systems
  • Hands-on experience with:

Apache Kafka

RabbitMQ

  • Ability to implement event-driven systems
  • Scaling & Performance
  • Experience handling high call volumes (1000+ concurrent calls)


Understanding of:

  • Multi-threading
  • Queue management
  • Load handling
  • Good to Have
  • Experience with predictive dialers
  • Exposure to WebRTC / real-time communication
  • Experience with Docker / Kubernetes
  • Understanding of TRAI / Indian telecom ecosystem
  • Experience with FreeSWITCH (bonus)


What We Are NOT Looking For

  • Pure solution architects who dont code
  • People with only theoretical telecom knowledge
  • Candidates without real dialer / Asterisk production experience


What We Are Looking For

Someone who has:

  • Written real dialplans and backend code
  • Debugged live call issues
  • Worked on production telephony systems
  • A problem solver who can go deep into logs, packets, and code


Impact of the Role

You will directly contribute to building a high-scale telephony + AI voice platform, working on real-time systems that handle thousands of concurrent calls.

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Shubham Vishwakarma

Full Stack Developer - Averlon
I had an amazing experience. It was a delight getting interviewed via Cutshort. The entire end to end process was amazing. I would like to mention Reshika, she was just amazing wrt guiding me through the process. Thank you team.
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About Fonada

Founded :
2014
Type :
Products & Services
Size :
20-100
Stage :
Profitable

About

Experience the future of communication with Fonada's Next-Gen CPaaS. Revolutionizing communication solutions for businesses.
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Shubham Vishwakarma

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