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Summer Internship | Machine Learning Engineer

London, United Kingdom


PolyAI is bringing revolutionary change to the enterprise phone experience. We build humanized AI voice assistants that are scalable, available 24/7, and fluent in any language. Our team of transformer NLU innovators and phone system experts are helping leading brands achieve a superhuman customer experience.

We have one ambition: delivering the best voice experiences in the world.

We have created custom voice agents for large enterprises in different industries, including banking, insurance, telecommunications, hospitality, etc.

The internship:

We’re looking for a passionate Machine Learning intern to join our team!

You’ll be collaborating with our world-class machine learning researchers in conversational AI. There are two sets of roles for machine learning interns:

  • Prototyping: brainstorm and prototype applied ML ideas for advancing conversational bots.
  • Productising: take machine learning systems from prototypes to production systems, and provide robust well-tested models for the engineering and product teams.

We work in an agile environment, with short release cycles.


  • You’re working towards a BSc or Masters degree in Computer Science or a related technical field involving coding (ie. physics, engineering or mathematics).
  • You have experience with Python and TensorFlow.
  • You’re proficient in English (spoken and written).
  • You have the right to work in the UK.

Preferred but not mandatory:

  • MS degree, PhD, or further education in Computer Science or a related field.
  • You have experience with applied machine learning for production systems.
  • You have experience with one or more cloud services: AWS, GCP, Azure.
  • You have a publication record in a top NLP/ML conference (ACL/EMNLP/NAACL/ICML/NIPS/ICLR).
  • You’re in your final year of the academic course.


🏝 25 days holiday, plus bank holidays per year (prorated)

🏡 Flexible working from home

🎉 Regular team socials, bi-weekly PolySeminars

🍎 Snacks, breakfast, fully stocked fridge with a selection of drinks

💰 Company pension scheme with the People’s Pension

Equal opportunity statement:

PolyAI is proud to be an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.

All employment decisions at PolyAI will be based on the business needs without attention to ethnicity, religion, sexual orientation, gender identity, family or parental status, national origin, neurodiversity status or disability status.


The application process will close on Wednesday, 12 January 2022. On this day, all applicants will receive a test to complete by Wednesday, 26 January 2021.

Due to the high volume of applications, we will not be able to reply to anyone until 26 January 2022.

Apply Now