Senior Engineer (Voice AI)

Location: Remote

Company

Hugging Face builds an open platform and open-source tools for AI developers, including models, datasets, applications, and machine learning infrastructure.

What you will do

• Own the architecture of the open-source speech-to-speech library, including pipeline design, latency budgets, and realtime-loop reliability.
• Integrate ASR, TTS, and end-to-end speech models while maintaining clean abstractions.
• Design hf-voice developer APIs and streaming protocols covering session lifecycle, WebSockets/WebRTC transport, authentication, errors, and versioning.
• Build realtime GPU inference serving with concurrency, autoscaling, observability, and cost optimization.
• Take the product from demo to production through load testing, SLOs, and graceful degradation.
• Write documentation and examples, support Reachy Mini deployments, and collaborate with the Hub, inference, and open-source communities.

Requirements

• Senior engineering experience with autonomous ownership of substantial architecture.
• Experience building developer-facing infrastructure for AI or developer tools, such as inference APIs or agent infrastructure.
• Substantial open-source contributions to a Python library and comfort with async Python and distributed systems.
• Experience shipping realtime systems involving streaming, WebSockets, WebRTC, audio, video, or live inference.
• Production experience with LLMs or multimodal models, plus clear written communication and asynchronous collaboration.
• Strong motivation to work on voice and conversational AI.

Nice to have

• Contributions to voice-agent frameworks or low-level inference runtimes.
• Experience with ASR, TTS, speech-model evaluation, GPU serving, quantization, or on-device inference.
• Audio pipeline knowledge, including VAD, echo cancellation, jitter buffers, barge-in, and turn detection.
• Experience shipping to embedded or robotics targets and a public record of talks, blog posts, or demos.

Culture & Benefits

• Remote options, flexible working hours, and a distributed workplace with offices in NYC and Paris.
• Health, dental, and vision benefits for employees and dependents.
• Parental leave, flexible paid time off, and workstation equipment when needed.
• Reimbursement for relevant conferences, training, and education.
• Company equity for employees and support for diversity, equity, and inclusion.