Role Title: Senior Telephony Engineer (Asterisk + Java | Hands-on Coding Role)

CTC: Upto 25 LPA

Years of Experience: 6+ years

Base Location: Noida

Preferred Industry: CPaaS & Conversational Gen AI Bots

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

- Bachelor’s degree in Computer Engineering; Master’s is a plus.
- Telephony (Core Requirement)
- Robust 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 don’t 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.

Pay: ₹2,000,000.00 - ₹3,000,000.00 per year

Perks:

- Health insurance
- Paid sick time

Work Location: In person

📌 Senior Asterisk Engineer (India)
🏢 Fonada
📍 India