Lead Speech & Audio Foundation Models Scientist (Remote)

Intelix.AI; San Francisco (CA); Hybrid; USD 270,000 - 500,000; Full time

Benefits offered by this job

Relocation assistance

Visa transfer support

Job summary

Intelix.AI is seeking a Principal Research Scientist to lead end-to-end development of foundation models for speech and audio, including text-to-speech and voice cloning. You will frame questions, run experiments, and ship results into production with measurable impact.

Role requires PhD in ML/NLP or equivalent practical experience, and a track record of producing deployable research. Relocation and visa transfer support are available for this US‑based, on-site friendly position with remote

Qualifications

• PhD in ML or NLP, or equivalent practical experience you can point to.
• Publications or open-source contributions in ML or speech.
• Experience shipping models to production with measurable impact.

Responsibilities

• Train foundation models: pre-training, reinforcement learning, reward modelling, post-training, new architectures, scaling.
• Build and improve voice and speech models across TTS, STT and speech-to-speech.
• Design the evaluation that proves the work: benchmarks, eval loops, LLM-as-judge, failure analysis.
• Work on frontier problems adjacent to the roadmap: multimodal, agents and tool use, test-time compute.
• Take models into production alongside the serving engineering team, inside a sub-200ms latency budget and across 100+ languages.
• Hands-on foundation-model training. Pre-training, RL, reward modelling, post-training, scaling.
• Real voice or speech research: TTS, STT or speech-to-speech. Speech-to-speech is the strongest signal; TTS and ASR both count.
• Evidence you can point at: papers, shipped models, open-source contributions, or systems in production.
• Evaluation depth: benchmarks, eval loops, quality measurement, failure analysis.
• Publications at ICML, ICLR, NeurIPS, EMNLP, ACL, AAAI, Interspeech or ICASSP.
• PhD in ML or NLP, or equivalent practical experience you can point to.
• Public work: side projects, open-source, technical write-ups.

Job description

Intelix.AI is seeking a Principal Research Scientist to lead end-to-end development of foundation models for speech and audio, including text-to-speech and voice cloning. You will frame questions, run experiments, and ship results into production with measurable impact.

Role requires PhD in ML/NLP or equivalent practical experience, and a track record of producing deployable research. Relocation and visa transfer support are available for this US‑based, on-site friendly position with remote