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Machine Learning/Speech Engineer

London, United Kingdom


PolyAI is tackling the challenges of automating customer service through voice. Our voice assistants make it possible for businesses to deliver outstanding customer service at every touchpoint, without over-investing.

This is voice-enabled, AI-driven customer service that works in the real world, right now.

Your responsibility will involve:

  • Leading productization of machine learning models and pipelines in a multi-tenant environment
  • Improving the quality of speech systems given the project requirements through biasing, postprocessing of the result and potential retraining
  • Cooperate with the infrastructure team to deploy production-ready machine learning services
  • Optimise our machine learning service runtime, as well as performance

Minimum Requirements:

  • BS degree in Computer Science or a related technical field involving coding, or equivalent industry experience
  • Experience with professional software engineering best practices, such as coding standards, code reviews, source control, build processes, and testing
  • Experience with one or more cloud services: AWS, GCP, Azure.
  • Experience with one or more programming languages such as Python or Golang
  • Working proficiency in verbal and written English

Preferred Requirements:

  • 1-2 years of commercial machine learning experience
  • Experience with Docker/Kubernetes
  • Experience with speech-to-text models such as DeepSpeech, Conformer, Wav2Vec
  • Experience with Tensorflow, PyTorch, or JAX


💰  Participation in the company’s employee share options plan

🏝  25 days holiday, plus bank holidays

🏡  Flexible working from home policy plus a one-off WFH allowance when you join 

🌎  Work from outside of the UK for up to 6 months each year

🧡  Enhanced parental leave

📚  Yearly learning budget

🏥  Private healthcare and dental cover, discounts on gym members and relaxation apps, and access to a range of mental health programs

Apply Now