Senior Machine Learning Scientist (Experiences)

London Source: WhatJobs

See advert for pay

Overview

In this role you lead ML initiatives for Tripadvisor Experiences, guiding the discovery engine's strategy and delivering production-ready models that power Search, Retrieval, Ranking, and Content AI. You’ll bridge cutting-edge research with engineering, translating offline metrics into business impact like bookings and engagement. You’ll mentor peers and drive robust, scalable ML systems within a fast-paced, collaborative team. This is a chance to shape a world-class travel marketplace.

Pay / Benefits

remote-friendly
flexible schedule
donation matching
tuition assistance
travel perks
health benefits

Responsibilities

Act as technical lead for ML projects within your pod
Design and implement custom model components or loss functions beyond off-the-shelf options
Evaluate research landscape and perform cost-benefit analyses on new architectures
Optimize models for production (quantization, distillation)
Create and maintain rigorous validation frameworks and backtesting to prevent data leakage
Coordinate with Engineering Leads to align compute/GPU infrastructure with model needs
Define model failure modes and confidence thresholds for robust fallbacks
Lead team-level post-mortems and guide corrective actions
Mentor mid-level and associate ML scientists on experimental rigor and production constraints

Key requirements

5+ years of industry experience developing, validating, and deploying large-scale ML models in production
Strong foundation in ML techniques, feature engineering, and deep learning
Experience adapting and hybridizing SOTA architectures for business problems
Familiarity with multi-task learning (MTL), ranking, Content AI stacks, Agentic AI (desirable)
Proficiency in Python and deep learning frameworks (PyTorch, PyTorch Lightning, TensorFlow)
Experience with data versioning and experiment tracking tools