Lead AI Engineer at Chrona agency

We are a YC-backed AI startup building the worlds most advanced real-time Speech AI coach used in online calls. Over the past six months weve grown from $100k to $5M ARR raised $2.5M from top-tier investors and assembled a world-class engineering team (ex-Google Nvidia Lyft Amazon) solving hard problems in voice ML and real-time infrastructure.We are looking for a senior hands-on engineer to lead development of our real-time Voice AI Agent and internal ML toolkit. Youll own end-to-end systems across real-time audio applied ML and production deployment working directly with our CEO and CTO. What Youll Do Build and scale our Real-Time Voice AI Agent (LiveKit/WebRTC): streaming ASR/TTS VAD diarization state machines session management latency/QoS tuning. Develop our ML toolkit and ship models to prod (ASR TTS VAD embeddings speaker ID). DSP ffmpeg/decoding ONNX/TensorRT reproducible pipelines. Contribute to backend when needed ( REST/OpenAPI Postgres/Supabase). Work on applied ML around LLMs: RAG function-calling routing safety A/B testing. Design reliable real-time systems: backpressure retries idempotency batching caching. Build data workflows: collection cleaning anonymization synthetic data offline/online eval. Own observability & SLOs: Prometheus Grafana Sentry tracing alerting. Deploy and operate infra: Docker GitHub Actions LiveKit Cloud Modal/AWS (GPU inference). What We Value Ability to move fast and deliver (high-intensity startup mindset). Experience in big tech / strong VC-backed startups / Yandex / research labs. Any founder experience (even failed). Strong engineering fundamentals taste in product & design. Open-source contributions ML/algorithms background Kaggle/CF/olympiads are a plus. A public presence: blog Twitter engineering posts bonus points. Clear communication and ability to explain complex systems simply. We do not hire from outsourcing firms Web3 or gambling. What We Offer High-ownership role with direct impact on product and roadmap. Work directly with CEO/CTO every day. Competitive salary meaningful equity (company valued at $20M last year). Fully async remote any timezone (via Deel). US visa support (O-1). 12 global offsites per year (last one Bali). Clear growth path: compensation increases with delivered projects. Key Skills Administrative Skills,Facilities Management,Biotechnology,Creative Production,Design And Estimation,Architecture Employment Type : Full Time Experience: years Vacancy: 1