Machine Learning Scientist

Salary: £71,000 - 99,000 per year

Requirements:

• Independent, curious, and motivated, with an interest in discussing ideas and contributing new perspectives
• Team player who enjoys learning
• Strong communication skills with technical and non-technical partners
• Able to deliver work on time and to specification
• Genuine interest in AI, including hands-on exploration of AI tools and enthusiasm for developing skills in this area
• PhD or masters degree in Computer Science, Engineering, Statistics, or a related field preferred; alternatively, a masters degree with 2+ years of practical experience
• Knowledge of A/B test design and analysis
• Strong background in machine learning and statistics
• Solid foundation in data structures and algorithms
• Proficiency in Python for numerical and statistical programming, including tools such as NumPy, Pandas, and Scikit-learn
• Ability to interpret and write complex SQL queries
• Experience with big data technologies such as Hive and Spark
• Track record of leading the deployment and maintenance of models
• Hands-on experience with AI-powered tools

Responsibilities:

• Apply machine learning models to core business problems across marketing
• Identify opportunities to apply data science and machine learning across marketing channels, including paid, organic, search, demand creation, affiliates, and CRM
• Automate ETL pipelines
• Prototype, evaluate, deploy, and maintain machine learning models in production
• Design A/B tests and analyze their results
• Find new ways to analyze and interpret data
• Communicate project progress and interpretations of experimental results to technical and business stakeholders
• Take ownership of projects and identify new business opportunities and problems where machine learning could help

Technologies:

• AI
• Big Data
• CRM
• ETL
• Hive
• Support
• Machine Learning
• Marketing
• Python
• SQL
• Spark
• numpy
• pandas

More:

We are the Tripadvisor Group, connecting people to experiences worth sharing and working to be the worlds most trusted source for travel and experiences. Our brands, technology, and capabilities connect a global audience with partners through rich content, travel guidance, and marketplaces across experiences, accommodations, restaurants, and other travel categories. Our portfolio includes Tripadvisor, Viator, and TheFork. In this ML II Scientist role, you will join our dynamic, fast-paced Machine Learning Team and support our marketing efforts, applying modeling to areas such as online advertising bids, customer modeling, experimental design, revenue optimization, attribution, recommendations, and lifetime value. You will work with modern development tools and large datasets, deploy solutions online, and observe their impact in real time. Our systems influence the travel decisions of millions of people each day. You will collaborate with data scientists, analysts, software engineers, and product managers in a diverse, multidisciplinary environment. We support personal development through social activities, journal clubs, online learning resources, and participation in industry conferences. We strive to provide an accessible and inclusive candidate experience and can arrange reasonable accommodations during the application and recruiting process. The posting indicates a hybrid role.

last updated 40 week of 2026