Software Engineer, Voice
Pubblicato il 17-08-2026 - indigo.ai in Milano
About Indigo.ai Since 2016, indigo.ai has been using AI to transform how companies talk with their customers. All the best stories start with great conversations: the relationships that matter are built on the ability to communicate, listen, and understand each other. Through our AI Agents platform we have automated millions of conversations across voice, chat and messaging, integrating with the CCaaS and enterprise systems of our clients and improving their operational and commercial performance. We are a fast-growing European scale-up, backed by Azimut with a €15M investment. The role Voice is where conversational AI is being decided right now, and it’s the channel where our enterprise clients feel quality, or its absence, most. Our voice agents already handle real production phone traffic for large companies. Today our voice runtime is a service we built in-house: a Node.js/TypeScript router that terminates telephony media streams, orchestrates streaming speech-to-text, turn-taking and text-to-speech across multiple speech providers, and talks to our agent platform,
the “brain” that owns knowledge, guardrails, routing, integrations and compliance. It works, in production, today. But the bar is moving fast. Speech-to-speech models, semantic turn detection and context-aware TTS are redefining what callers expect from a machine on the phone. We want to make the leap from “works reliably” to “feels human on a real phone line”, and we want one person to own that leap. This is not a generic backend position. It’s a specialist role with end-to-end ownership: the architecture, the orchestration, the model and provider choices, the latency budget, the way a conversation feels . You’ll be our first engineer fully dedicated to voice, working directly with the founders and the platform team. And if voice grows the way we believe it will, you’ll shape the team that grows around it. What You’ll Do
- Own the real-time voice pipeline end-to-end. From audio ingress on the telepho