About this role

<h2>Intro</h2>For this position we are only looking for candidates located in Greece.Nairon is a Swiss startup building AI voice agents that answer and make phone calls for businesses. Our platform runs real-time conversations over the phone and on the web, connected to our customers' telephony and business tools. We value clear communication, thoughtful engineering, and a collaborative approach to problem-solving. Join us as we continue to develop tools that make a difference.<h2>Tasks</h2>As a Realtime Backend Engineer at NAIRON, you will build the services that carry every call and every event through our platform. Your responsibilities will include:<ul><li>Designing, building and running microservices around our LiveKit-based real-time media platform.</li><li>Working with messaging and realtime data systems such as NATS, Kafka and Redis-compatible stores.</li><li>Connecting phone calls to the platform: SIP trunks, routing, transfers and call quality, together with the team.</li><li>Building integrations with our customers' systems, such as CRMs, calendars and ticketing tools.</li><li>Running services in the cloud with Docker and Kubernetes, with metrics, logs and traces you can trust.</li><li>Taking part in code reviews, technical discussions and architectural planning.</li></ul><h2>Requirements</h2>Experience:A mid-level to senior backend engineer with experience running distributed, real-time systems in production.Technical Skills:Required:<ul><li>Strong Python (asyncio, FastAPI or similar); TypeScript or Go is a plus.</li><li>Microservice design: messaging, idempotency, backpressure and failure handling.</li><li>Experience with NATS, Kafka or a comparable realtime messaging or database system.</li></ul>Nice to have:<ul><li>LiveKit, WebRTC or other real-time media.</li><li>SIP and VoIP: trunks, Kamailio or similar proxies, RTP troubleshooting.</li><li>Cloud experience (AWS or similar), Kubernetes and observability with OpenTelemetry and Grafana.</li></ul>Communication:<ul><li>English proficiency is essential, both written and spoken, as it is the working language for all positions.</li></ul>Soft Skills:<ul><li>Calm, systematic debugging when something breaks under load.</li><li>Ability to work independently in a distributed team and to write things down.</li></ul><h2>Benefits</h2><ul><li>Flexible Work Setup: Work fully remotely or from a co-working space — whichever suits you best.</li><li>Equipment Provided: Company laptop and phone provided for all employees.</li><li>Collaborative Environment: Join a small, agile team where your contributions have a direct impact.</li><li>Growth Opportunities: See the whole path of a call, from the phone network to the AI agent, and grow into telephony or AI work.</li></ul><h2>Closing</h2>If you enjoy building systems that have to work in real time, we'd love to hear from you.