Mar 4, 2025 by Phonio

Backend Engineer - Node.js (Voice AI Platform - Phonio.ai)

📍 Location: Surat
💰 Compensation: Competitive
📅 Job Type: Full-time

About the Role

We are looking for a Backend Engineer (Node.js) to help build and scale our Voice AI platform. You will work on integrating real-time AI, telephony APIs, and LLMs. This role is ideal for someone who enjoys building scalable, high-performance APIs and working with cutting-edge AI technologies.

About Phonio.ai

Phonio.ai is the first Voice AI platform built for business operations, not developers. We help marketers, e-commerce teams, and customer service departments integrate AI-driven voice interactions seamlessly into their workflows.

Responsibilities

  • Develop and maintain APIs (REST, WebSockets, gRPC) to handle real-time voice interactions.

  • Integrate telephony APIs (Twilio, Plivo, Vonage) for call automation and customer engagement.

  • Implement AI-driven voice workflows by integrating OpenAI GPT-4, Claude, Gemini.

  • Optimize database performance in MongoDB, ensuring low-latency query execution.

  • Ensure high availability and scalability using AWS services, Kubernetes, and Docker.

  • Work with real-time data processing for speech recognition (ASR) and text-to-speech (TTS).

  • Implement authentication and security best practices (OAuth, JWT, rate limiting).

  • Collaborate with frontend and AI engineers to create seamless voice automation workflows.

Requirements

  • 3+ years of experience in backend development using Node.js.

  • Strong experience with REST, WebSockets, and gRPC APIs.

  • Hands-on experience with MongoDB, including indexing and optimization.

  • Experience integrating LLMs (OpenAI, Claude, Gemini) into backend workflows.

  • Familiarity with telephony APIs (Twilio, Plivo, etc.).

  • Strong knowledge of AWS

  • Experience with Docker & Terraform (good to have).

  • Understanding of real-time systems & event-driven architecture.

Nice to Have

  • Knowledge of AI model fine-tuning & inference optimization.

  • Previously having experienced 0-1 journey of an AI product

Why Join Us?

  • Work on the future of voice AI, transforming how businesses communicate.

  • Opportunity to shape a rapidly growing industry in AI-driven voice automation.

  • Collaborate with a team that values innovation, scalability, and real-world impact.

  • Gain hands-on experience working with state-of-the-art AI models and cloud infrastructure.

If you’re excited about building AI-powered voice automation at scale, we’d love to hear from you. Apply now by sending an email at [email protected]