Fonada

About the Company

We are a fast-growing Communications Platform as a Service (CPaaS) company offering cutting-edge solutions in Messaging, Voice, Gen-AI powered Chatbots, and Voicebots. Our solutions are empowering over 100+ brands to automate customer interactions and enhance digital engagement across industri

We are currently seeking a Senior Golang Developer to join our team in Noida, India.

Responsibilities:

• Create and maintain microservices, primarily in Golang, taking increasing responsibility.
• Assist with design and build to solve bugs, improve performance, and add new features.
• Develop an understanding of end-to-end technical architecture and dependency systems. Apply that understanding in code.
• Write tests with high coverage including unit, contract, e2e, and integration.
• Version control code with git and build, test, and deploy using ci/cd pipelines.
• Build and test remotely on your machine and deploy to low-level environments.
• Participate in the review of team members code.
• Perform demos and join acceptance discussions with analysts, developers, and product owners.
• Assist in task planning and review as part of a sprint-based workflow.
• Estimate and own delivery tasks (design, dev, test, deployment, configuration, documentation) to meet the business requirements.

KEY DELIVERABLES:

• First and foremost, you want to build products to solve real, pressing problems for your customers. You enjoy working in a team and have an interest in data science and how advanced algorithms may be deployed as product offerings.
• You are detail-oriented and enjoy writing and reviewing code to a high standard with tests to prove it.
• Demonstrable ability to write Python/Golang and SQL. You are happy to learn new programming languages and frameworks as necessary.
• You are interested in contemporary approaches to service design, including the use of containers and container orchestration technologies, streaming data platforms, APIs, and in-memory/NoSQL stores.
• You would be delivering solution/developing product using KAFKA/RabbitMQ Queue management software/framework.
• You would be working extensively in REDIS or any other cache management software/framework.
• You would be needing to know advance data structure and algorithms to build highly scalable and performance oriented product/solution.
• You are familiar with working in a DevOps-based software development workflow, including building, testing, and continuous integration/deployment. You are also happy to evolve along with the development process and contribute to its success.
• You can communicate with a range of stakeholders, including subject matter experts, data scientists, software engineers, and enterprise DevOps and security professionals.
• You are keen to engage with best practices for code review, version control, and change control, balancing the need for a quality codebase with the unique demands of scale-up stage software engineering.
• You have experience or are keen to engage with productionising machine learning technologies.

Required Qualifications & Skills:

• Bachelor's degree in Computer Science, Engineering, or a related field followed by 7+ years of experience in a modern development stack Golang, Kafka/RabbitMQ,Redis,REST API
• Experience in application design, software development, and testing in an Agile environment with relational and NoSQL databases, including PostgreSQL/MySQL, Couchbase, or Cassandra.
• In designing and developing REST APIs for high volume clients with continuous integration tools (Jenkins, Gitlab CI) with automated build and test frameworks a plus with container and container orchestration technologies, such as Docker and Kubernetes.
• Experience with Atlassian software development and collaboration tools (JIRA, Confluence, etc.).

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.