Machine Learning Infra Engineer

About The Role

Nuance Labs is building the next generation of emotionally expressive, real-time AI.

This is a critical role to build the infrastructure that powers our AI platform. You will own the systems that serve models at scale, orchestrate complex data workflows, and ensure our real-time video AI runs reliably with low latency for users worldwide.

Responsibilities

• Own Inference Infrastructure: Build and maintain the serving stack for multimodal AI workloads. Optimize for latency, throughput, and cost using batching strategies, autoscaling, and intelligent resource allocation.
• Real-Time Video Streaming: Architect systems to handle long-lived WebRTC connections with unpredictable client behavior, ensuring smooth video and audio delivery at scale.
• Orchestrate Data Workflows: Build robust pipelines for offline processing, evaluation, and training using orchestration frameworks like Dagster or Ray. Manage petabyte-scale video storage and network requirements.
• GPU Cluster Management: Configure and maintain GPU clusters using Kubernetes and Terraform. Implement monitoring, autoscaling based on custom metrics, and cost optimization strategies.
• Developer Tooling: Build CI/CD, evaluation, and versioning systems that enable safe, zero-downtime model deployments and rapid iteration cycles.

Requirements

• Infrastructure Expertise: Strong practical experience with Kubernetes, Terraform, and cloud platforms. You can design secure, scalable systems and debug complex distributed issues.
• Systems Programming: Proficiency in Python and experience with systems languages (Rust or Go). Comfortable profiling workloads and resolving compute, memory, or network bottlenecks.
• Orchestration & Pipelines: Experience managing large-scale offline workflows using tools like Dagster, Ray, Airflow, or similar frameworks.
• Production Operations: Deep understanding of production reliability, monitoring, incident response, and capacity planning for high-traffic services.

Preferred Experience

• Experience with WebRTC or real-time media pipelines in production
• Experience running GPU-backed inference services at scale (vLLM, Triton Inference Server, TensorRT)
• Knowledge of performance optimization and low-level systems debugging
• Familiarity with video/audio processing and storage systems

Nuance Labs Key Facts

• $10M seed round backed by Accel, South Park Commons, Lightspeed, and top angels including Synthesia’s former CPO.
• A world-class team of PhDs from MIT, UW, and Oxford with decades of industry experience at Apple and Meta, advancing real-time avatars from cutting-edge research to products used by millions.
• In-person collaboration, 5 days a week at Seattle HQ