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Machine Learning Engineer / Voice-centric AI
Machine Learning Engineer / Voice-centric AIMotion Recruitment • Chicago, Illinois, United States
Machine Learning Engineer / Voice-centric AI

Machine Learning Engineer / Voice-centric AI

Motion Recruitment • Chicago, Illinois, United States
[job_card.30_days_ago]
[job_preview.job_type]
  • [job_card.full_time]
  • [job_card.permanent]
[job_card.job_description]

We’re looking for an entrepreneurial Senior Machine Learning Engineer with experience taking voice-centric AI systems (TTS, STT, LLM-driven dialog) from prototype to large-scale production. You’ll own the full ML lifecycle—research, data pipelines, training, evaluation, deployment, and ongoing optimization—powering sub-second, natural voice conversations at scale.

This role is ideal for someone passionate about pushing the limits of conversational AI : creating highly optimized, domain-specific models that are faster, leaner, and more cost-efficient than general-purpose solutions. You’ll collaborate closely with product, infrastructure, and compliance teams, while setting the technical bar for model excellence and ML best practices.

Required Skills & Experience

  • Experience : 7+ years building production ML systems, including 2+ years in speech or conversational AI. Proven track record deploying large-scale voice AI or LLM products.
  • Fine-tuning & compression (LoRA, QLoRA, quantization, pruning, distillation).
  • Speech (ASR : Whisper, NeMo, Kaldi; TTS : Tacotron, FastSpeech, VITS).
  • LLMs & dialogue (GPT-class, RAG, LangGraph, LangChain, MCP).
  • Strong in Python; bonus for TypeScript / Node / Java.
  • Infra & Ops (Kubernetes, Helm, Terraform, MLflow / SageMaker).
  • Data systems (Kafka, Redis, Postgres, Snowflake).
  • Streaming protocols (gRPC, WebSockets, HTTP / 2, WebRTC).
  • Security & compliance (HIPAA, SOC2, HITRUST).
  • Product-oriented, entrepreneurial, strong problem solver, effective communicator, and technical leader.

Desired Skills & Experience

  • Optimize & Fine-Tune Models : Apply LoRA, QLoRA, RLHF, and other parameter-efficient techniques. Use quantization, pruning, and distillation to shrink models while preserving quality.
  • Build End-to-End Pipelines : Design STT, TTS, and LLM systems achieving
  • Scale Inference : Optimize serving on Kubernetes / EKS with dynamic batching, speculative decoding, and streaming protocols.
  • Advance Dialogue Management : Extend LangGraph / LangChain flows and MCP schemas for complex multi-turn conversations.
  • Data & Evaluation : Develop pipelines for conversational logs (Kafka ? Snowflake / S3) and create frameworks to measure ASR accuracy, TTS quality, and task completion.
  • Lead & Mentor : Define ML best practices, champion model CICD and monitoring, and mentor teammates on ML Ops, speech processing, and prompt engineering.
  • Innovate & Research : Run POCs with cutting-edge models (e.g., Whisper-v3, Bark) and stay ahead of the latest in speech + LLM research.
  • Ensure Reliability & Compliance : Implement HIPAA-grade security, PHI safeguards, and robust fallback strategies.
  • The Offer

  • Bonus eligible
  • You will receive the following benefits :

  • Medical, Dental, and Vision Insurance
  • Vacation Time
  • Stock Options
  • Applicants must be currently authorized to work in the US on a full-time basis now and in the future.

    #LI-EM1

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