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Bumble

Principal Machine Learning Engineer, Matching and Recommendations (UK Based)

Bumble
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4 days ago
London, United KingdomStaff+

Responsibilities

  • Define and lead the technical strategy for AI and Machine Learning systems.
  • Design, develop, and deploy production-grade models using modern ML frameworks.
  • Build and deploy production AI Agents using foundational Large Language Models.
  • Architect end-to-end ML pipelines integrating data processing with model workflows.
  • Drive experimentation frameworks to improve model performance and product outcomes.
  • Partner with Product, Engineering, and Data leadership to create impactful ML solutions.
  • Mentor senior individual contributors and foster a culture of continuous learning.
  • Take ownership of complex problem spaces and adapt approaches with agility.
  • Champion responsible AI practices ensuring fairness and user safety.

Requirements

  • Typically requires 10–15 years of experience in machine learning.
  • Deep expertise in building and deploying large-scale ML systems.
  • Strong proficiency in Python and at least one major ML framework.
  • Experience with recommendation systems, ranking models, or NLP.
  • Expertise in prompting and fine-tuning Large Language Models.
  • Proven experience designing scalable data and ML pipelines.
  • Ability to influence technical strategy without direct authority.
  • Experience collaborating across functions in complex environments.
  • Track record of mentoring and building inclusive, high-performing teams.
  • Strong AI fluency with the ability to design and optimize ML systems.

Benefits

  • Annual personal learning & development budget.
  • Private Medical Insurance (PMI) and Private Dental Insurance.
  • Mental health support and access to the Babylon Health app.
  • Enhanced parental leave, including a competitive maternity package.
  • Unlimited PTO and subsidised gym membership.
  • 'Double matched' pension contributions up to 6%.
  • Premium App Access.

Tech Stack

Apache AirflowApache SparkPythonPyTorchTensorFlow

Categories

AI & MLData EngineeringData Science