About Us Sapir AI is a Toronto-based robotics and AI startup building connected consumer hardware, including wearables and smart home devices. We're hiring a Senior Backend Engineer to own the systems behind our connected devices, from data pipelines to AI infrastructure. You'll work with high autonomy, taking full ownership from design to production.

Responsibilities - Backend systems handling real-time device data (video, sensor, and AI inference events) at scale - Edge-to-cloud AI pipelines and third-party machine learning inference integrations - Privacy-first storage and retention, with on-device processing where possible - Event-streaming, alerting, and subscription billing infrastructure Requirements - 5+ years of backend engineering experience; Python required - SQL and NoSQL databases (Postgres, DynamoDB/MongoDB) - AWS/GCP and streaming infrastructure (IoT Core/Kinesis), Firebase (storage, messaging) - API design at scale: REST/gRPC,



plus MQTT and/or Kafka - Video/audio/binary data pipelines - CI/CD (Continuous Integration/Continuous Deployment), Docker/Kubernetes, staging/deployment/scaling tooling Nice to Have - Production machine learning/large language model inference infrastructure (managed model APIs, vLLM, Triton, or similar) - Consumer IoT (Internet of Things)/wearables experience, or any machine learning application with real production traffic - On-device/edge machine learning or privacy-preserving architecture experience Soft Skills - Adaptable and comfortable with fast iteration as the product evolves - Pragmatic about scale. Builds for today, while understanding where to maintain flexibility to future-proof for growth - Cooperative across hardware, firmware, and mobile teams

📌 Senior Backend Engineer (IoT and Wearables) (Toronto)
🏢 Sapir Robotics
📍 Toronto