Hark

Lead Audio ML Engineer

Hark
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10 days ago
San Jose, CA, USAStaff+

Base Salary

$120k - $300k/yr

Responsibilities

  • Implement and train audio models for wake-word detection, voice activity detection, source separation, speech enhancement, and related applications.
  • Move audio models from research prototypes to on-device deployment within latency, memory, and power budgets.
  • Build and maintain training data pipelines, evaluation harnesses, and retraining processes across model families.
  • Partner with DSP and firmware engineers to integrate models into the Hark Audio Engine and DSP runtime.
  • Collaborate with hardware and acoustics teams to characterize operating signal conditions.
  • Profile and optimize models on DSP, NPU, and CPU target platforms and define product accuracy and resource budgets.

Requirements

  • At least 3 years of professional experience building and shipping audio or speech ML models.
  • Strong fluency with PyTorch or TensorFlow and modern audio deep learning toolchains.
  • Hands-on experience deploying models to embedded targets such as DSP, NPU, or mobile NPU and CPU.
  • Experience across the full ML lifecycle, including data, training, evaluation, deployment, and monitoring.
  • Solid foundation in audio signal processing and its intersection with ML pipelines.
  • Experience collaborating with DSP, firmware, and hardware engineers on resource-constrained systems.
  • Preferred qualifications include experience shipping voice-first or far-field audio products, on-device wake-word systems, ASR front-ends, or production-scale speech enhancement.
  • Preferred qualifications include familiarity with quantization, pruning, distillation, Qualcomm AI stacks or similar providers, and open-source audio ML contributions.

Tech Stack

PyTorchTensorFlow
Hark

About Hark

1-10 employees
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