[Hiring] Software Engineer @NAIRON

Role Description

As a Software Engineer at Nairon GmbH, your responsibilities will include:

• Building Python services around our LiveKit-based real-time voice platform: call handling, events and integrations with our customers' CRMs, calendars and ticketing tools.
• Improving the conversation itself: turn-taking, latency across speech recognition, language models and speech synthesis, prompting and tool calls.
• Working with messaging and real-time data (NATS, Kafka, Redis-compatible stores) and designing services that handle failure, retries and backpressure.
• Building evaluation: test calls, benchmarks and metrics that tell us when a change really helps.
• Running what you build in the cloud with Docker and Kubernetes, with metrics, logs and traces you can trust.
• Taking part in code reviews, technical discussions and architectural planning.

Qualifications

• Experience at all levels: graduates and early-career engineers with substantial hands-on projects, mid-level engineers, and seniors who want to own larger parts of the platform.

Requirements

• Technical Skills:
• Solid Python; for mid-level and up, asyncio and FastAPI or similar.
• Good fundamentals in Git, APIs, testing and debugging.
• An evaluation mindset: you measure before and after, and trust numbers over impressions.
• Nice to have (any of these, not all):
• Real-time audio or conversational AI: speech recognition, speech synthesis, voice activity detection, LLM APIs, LiveKit Agents, pipecat or WebRTC.
• Distributed systems and messaging: NATS, Kafka, idempotency and backpressure.
• Model serving on GPUs (vLLM or similar) or fine-tuning speech and language models.
• SIP and VoIP basics, TypeScript or Go.
• Docker, Kubernetes, AWS and observability with OpenTelemetry and Grafana.
• Communication:
• English proficiency is essential, both written and spoken, as it is the working language for all positions.
• German is a plus, as many of our calls are in German.
• Soft Skills:
• Calm, systematic debugging when something breaks in a live call.
• Ownership of a problem from the first bad call to the fix in production.
• You work independently in a distributed team and write things down.

Benefits

• Flexible Work Setup: Work fully remotely or from a co-working space — whichever suits you best.
• Equipment Provided: Company laptop and phone provided for all employees.
• Collaborative Environment: Join a small, agile team where your contributions have a direct impact.
• Growth Opportunities: Work across the whole voice stack, from the phone line to the model, and grow toward the area you like most.