Senior Machine Learning Scientist (Generative AI) - Viator

London, UKViator, a Tripadvisor company, is the leading marketplace for travel experiences. We believethat making memories is what travel is all about. And with 300,000+ travel experiences toexploreeverything from simple tours to extreme adventures (and all the niche, interesting stuffin between)making memories that will last a lifetime has never been easier. One app, 300,000+ travel experiences youll remember.Competitive compensation packages (routinely benchmarked against the latest industry data), including base salary and annual bonus.Viator takes a remote-friendly approach to collaboration across a worldwide team, with the option to join on-site as often as youd like.Flexible schedule. Work-life balance is ingrained in our culture by design. Use it on travel, wellness, or whatever suits you.Travel perks. We believe that travel is employee development, so we provide discounts and more.Employee assistance program. Were here for you with resources and programs to help you through lifes challenges.Tap into your talent, ambition, and knowledge to bring us and you to new heights.At Tripadvisor, we want you to bring your unique identities, abilities, and experiences, so we can collectively revolutionize travel and together find the good out there.Research, prototype, and productionize generative AI models.Develop scalable GenAI pipelines that generate high-quality content, from product descriptions, reviews, titles, and other product content.Fine-tune foundation models and develop domain-specific adapters using techniques like LoRA, PEFT, and instruction tuning.Define best practices for model monitoring, including output quality, hallucination detection, and user feedback loops.Understanding use cases for Agentic AI communicating your findings with the wider ML team and product.Utilize RLHF methodologies to build feedback mechanisms that directly shape the behavior and quality of our generative AI outputs.Stay up to date with the latest in GenAI research and help shape internal best practices.Collaborate with product managers and various business stakeholders to ensure top-quality outcomes to meet internal objectives.5+ years of hands-on data science experience with at least 2 years of experience with LLM- Awareness of current LLM techniques, prompt tuning, evaluations and model monitoring.- In-depth knowledge of AI/ML/DL, Statistics, and related open-source libraries.- Strong skills in SQL and at least one programming language.- To be comfortable in code reviews, discussing architecture, and collaborating with a multidisciplinary team for regular model deployments.- Experience in deploying online solutions and analysing real-time results through A/B testing.- To be passionate about mentoring junior members of the team, and have a strong desire to help us perform to the best of our ability.- Leadership qualities, autonomy, and team collaboration skills.- Actively involved in business networking and able to communicate complex ideas across the business simply and effectively.

Master''s or PhD in Computer Science, Operations Research, Statistics, or related quantitative disciplines.Knowledge in (any or all) User Modelling, Representation Learning, RecSys, Large Language Models (LLM)Prior experience in e-commerce or at an Online Travel Agency.Job Location:

This role is a remote position or hybrid in the UK, Poland or Portugal. Occasional travel to company offices as necessary.If you need a reasonable accommodation or support during the application or the recruiting process due to a medical condition or disability, please reach out to your individual recruiter or send an email toAccessibleRecruiting@Tripadvisor.LI-Hybrid#indicates a required fieldPhone *WebsiteTripadvisor collects your personal data for the purposes of managing Tripadvisors recruitment related activities as well as for organizational planning purposes globally. Consequently, Tripadvisor may use your personal data in relation to the evaluation and selection of applicants including for example setting up and conducting interviews and tests, evaluating and assessing the results thereto and as is otherwise needed in the recruitment processes including the final recruitment. If you join Tripadvisor, the personal data collected will become part of your employment record. Tripadvisor retains this information for various reasons, including in case Tripadvisor faces a legal challenge in respect of a recruitment decision, to consider you for other current or future jobs and also to help us better understand, analyze and improve our recruitment processes.Tripadvisor does not disclose your personal data to unauthorized third parties. You agree to the fact that to the extent necessary your personal data may be transferred and/or disclosed to any company within Tripadvisor group of companies as well as to third parties acting on Tripadvisors behalf, including also transfers to servers and databases outside the country where you provided Tripadvisor with your personal data. Such transfers may include for example transfers and/or disclosures outside the European Economic Area and to the United States of America, in order to contact your referees or to detect, prevent or otherwise address fraud, security or technical issues, or to protect against harm to the rights, property or safety of Tripadvisor, our users, applicants, candidates, employees or the public or as otherwise required by law.