Senior Back End Developer - Real-Time Audio & Voice Systems

Hyderabad, Telangana

Role Overview

We are seeking a Senior Backend Engineer - Real-Time Audio & Voice Systems to design, build, and operate low-latency, highly reliable voice and audio pipelines that power conversational Al platform. This role requires deep hands-on experience with real-time audio streaming, speech-to-text (STT), text-to-speech (TTS), and telephony integrations, using Python and Node.js in production environments.

You will play a critical role in building scalable, fault-tolerant systems for high-volume voice interactions.

Key Responsibilities

· Design, develop, and operate real-time audio processing pipelines for conversational voice agents.

· Build and maintain backend services using Python (FastAPI/async frameworks) and Node.js for low-latency workflows.

· Implement bi-directional audio streaming using WebSockets, WebRTC,or similar protocols.

· Integrate and optimize Speech-to-Text (STT) and Text-to-Speech (TTS) engines (cloud-based or self-hosted).

· Build and maintain telephony integrations (inbound/outbound calling, call routing, call recording, DTMF, conferencing).

· Optimize audio latency, jitter, and reliability across distributed systems.

· Handle high-concurrency workloads and real-time session state management.

· Implement monitoring, logging, and alerting for voice pipelines and call flows.

· Collaborate with AI/LLM teams to integrate speech pipelines with conversational logic.

· Own production deployments, on-call rotations, and incident response for voice systems.

Required Qualifications

· 4+ years of backend engineering experience, with a strong focus on real-time systems.





· Strong hands-on experience with Python and Node.js in production environments.

· Proven experience building real-time audio or voice applications.

· Deep understanding of STT and TTS pipelines, audio codecs, and streaming concepts.

· Solid experience integrating telephony platforms (inbound/outbound calls, SIP, PSTN).

· Experience with WebSockets, WebRTC, or RTP-based streaming.

· Solid understanding of asynchronous programming and event-driven architectures.

· Experience with Docker and CI/CD pipelines.

· Ability to debug and optimize distributed, latency-sensitive systems.

Nice-to-Have Skills

· Experience with LLM-powered voice assistants and conversational Al systems.

· Familiarity with audio codecs (Opus, PCM, u-law) and sampling strategies.

· Experience with cloud infrastructure (AWS/GCP) and autoscaling real-time services.

· Exposure to message queues, Redis, or real-time state stores.

· Prior experience in healthcare, contact centers, or telecom domains.

Why Join Interactly.ai?

· High-impact role: Own mission-critical voice infrastructure at scale.

· Challenging engineering problems: Build low-latency, real-time Al systems.

· Growth-stage startup: Influence architecture and technical direction from early stages.

· Global collaboration: Work closely with India- and US-based teams.

· Career progression: Opportunity to grow into Staff or Principal Engineering roles





Requirements added by the job poster

· 3+ years of work experience with Node.js

· 3+ years of work experience with Python (Programming Language)

Pay: ₹200,000.00 - ₹4,000,000.00 per year

Application Question(s)

- 1. How many years of Total experience do you have?

- 1. How many years of Python (FastAPI, asynchronous frameworks) experience do you have?

- 1. How many years of Node.js experience do you have?

- 1. How many years of Real-Time & Audio Streaming Protocols experience do you have?

WebSockets, WebRTC, RTP-based streaming, Bi-directional audio streaming, Real-time audio processing pipelines, Latency and jitter optimization across distributed systems,
- 1. How many years of Speech & Audio Technologies experience do you have?

Speech-to-Text (STT) engines (cloud-based or self-hosted), Text-to-Speech (TTS) engines (cloud-based or self-hosted), Audio codecs (Opus, PCM, μ-law), Audio sampling strategies,
- 1. How many years of Telephony & Communications Infrastructure experience do you have?

Telephony platforms integration (SIP, PSTN), Inbound and outbound calling systems, Call routing, call recording, DTMF, and conferencing,
- 1. How many years of Backend & Systems Architecture experience do you have?

Asynchronous programming, Event-driven architectures , High-concurrency workload management, Real-time session state management, Debugging and optimizing distributed, latency-sensitive systems, Message queues,
- 1. How many years of AI & Conversational Systems experience do you have?

- 1. How many years of Cloud, DevOps & Operations experience do you have?

- 1. What is your current notice period?

Work Location: In person

📌 Senior Back End Developer - Real-Time Audio & Voice Systems (Hyderabad)
🏢 Hire3 Labs
📍 Hyderabad