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Tripadvisor

Staff/Principal Machine Learning Scientist - Ranking & Retrieval

Tripadvisor · London, United Kingdom

Posted about 3 months ago

or apply directly on Tripadvisor's site. We never take the application ourselves.

Is this posting real?

This role has been open
87 days
Tripadvisor's roles stay open a median of 87 days
Reposted
No
Salary listed
No
8% of Tripadvisor's roles list one
Ghost-job risk at Tripadvisor
high
97 stale, 3 reposted of 97 open
Hiring momentum
144 roles opened in the last 90 days
↑ up vs. the prior 90 days
Last confirmed on the employer's board
2026-10-29

Measured from postings appearing on and disappearing from Tripadvisor's own greenhouse board since 2026-08-03. Full hiring picture for Tripadvisor.

About this role

In this role as a Principal Machine Learning Scientist, you will lead the machine learning strategy for Tripadvisor's core discovery engine, focusing on recommendation systems that enhance user engagement and booking conversions. You will design and implement advanced algorithms, oversee system architecture, and mentor a team of ML scientists while collaborating with cross-functional teams to achieve business objectives.

Our read on this posting3.2out of 5
benefits
5/5
freshness
1/5
career value
5/5
role clarity
5/5
pay transparency
0/5

Scored from the posting itself — how clearly the role is described, how much it says about pay and benefits, and how recently it was listed. Not a judgement of Tripadvisor as an employer.

What you need

  • Ph.D. or Master’s degree in Computer Science, Machine Learning, Statistics, or a highly quantitative field
  • 8+ years of industry experience developing and deploying large-scale ML models in a production environment
  • Deep theoretical and practical knowledge in SOTA Retrieval & Ranking, Multi-Task Learning, and similar architectures
  • Hands-on experience building sequential recommendation systems
  • Deep understanding of embedding generation and multi-modal representation learning
  • Mastery of Python and deep learning frameworks (TensorFlow, PyTorch)

Nice to have

  • Strong experience applying Graph Neural Networks, knowledge graphs, or graph embeddings
  • Familiarity with Agentic AI frameworks or LLM-driven reasoning
  • Experience working in E-commerce, Travel Tech, or Two-Sided Marketplaces
  • A strong track record of academic or industry contributions, including publications in top-tier AI/IR conferences

What you get

  • Competitive compensation packages including base salary and annual bonuses
  • Remote-friendly approach to collaboration
  • Flexible schedule promoting work-life balance
  • Donation matching for charitable contributions
  • Tuition assistance for qualified programs
  • Annual lifestyle benefit for personal spending

Worth weighing

  • Role involves tackling complex and ambiguous problems, which may require a high level of adaptability
  • No specific salary range mentioned
  • The position requires significant experience and expertise, which may limit applicants
  • Mentorship responsibilities may require additional time commitment

Summarised from Tripadvisor's posting. Read the full original.

Listed by Tripadvisor on their greenhouse job board, last confirmed open on 2026-10-29. PitchMeAI is not the employer.

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