Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success. Why Join Us? To shape the future of travel, people must come first. Guided by our Values and Leadership Agreements, we foster an open culture where everyone belongs, differences are celebrated and know that when one of us wins, we all win. We provide a full benefits package, including exciting travel perks, generous time-off, parental leave, a flexible work model (with some pretty cool offices), and career development resources, all to fuel our employees' passion for travel and ensure a rewarding career journey. We’re building a more open world. Join us. Introduction To Team We create and deliver an aligned, dedicated marketing strategy to fuel each Expedia Group brand's success. Since our travelers interact with us through our brands, we have a brand focus in our marketing, while leveraging the scale and efficiency we’ve built in functional expertise. As an Applied AI Scientist III, you will be a dedicated AI thought leader in Search Marketing, exploring emerging technologies, developing prototypes and building production-ready solutions that enhance marketing performance. You will design and deploy AI solutions, including autonomous and agent-based systems capable of executing marketing workflows and optimising spend. Working closely with Marketing, Engineering, Product and ML Science, you will embed AI into decision-making, automation and cost optimisation workflows to drive revenue growth, reduce costs and increase customer engagement. What You’ll Do • Lead AI innovation by identifying and testing opportunities to integrate advanced generative AI and other ML methods, including agent-based systems, into SEM and Metasearch workflows • Design, develop and deploy AI solutions to improve bidding, capital allocation, audience targeting, creative optimisation and campaign segmentation through structured test-and-learn approaches • Develop and implement prompt engineering, tool integrations and orchestration strategies for autonomous AI workflows • Rapidly prototype proof-of-concepts to assess value before scaling solutions into production • Execute A/B and multivariate tests, applying statistical methods such as t-tests, confidence intervals and distributions to ensure results are valid and repeatable, and improving experimental design for marketing applications • Apply generative AI, reinforcement learning and other ML techniques to improve operational efficiency and campaign outcomes through automation and scalability • Implement monitoring, observability and guardrails for AI systems to ensure performance, reliability, compliance and safety • Identify and address algorithm risks or inefficiencies before they impact marketing performance • Collaborate with Marketing, Engineering, Science and Product teams to align AI innovations with business goals and scale them across brands, products and marketing processes • Partner with product and engineering teams to design and enhance APIs, dashboards and bidding tools that embed AI capabilities into SEM and Metasearch operations • Analyse large-scale SEM and Metasearch datasets, identify changes in market dynamics such as seasonality, auction changes and competitor actions, and implement strategies to improve ROI and competitive positioning • Build pipelines, workflows and tools for continuous learning and improvement from AI-driven initiatives, and troubleshoot issues including data quality problems, pipeline failures and degraded model performance • Ensure responsible AI practices by addressing bias, fairness, privacy and transparency in AI solutions • Present recommendations and results to senior leadership in a clear, compelling and business-relevant way Who You Are • Bachelor’s or Master’s in Computer Science, Data Science, AI/ML, Statistics or a related quantitative field; PhD preferred • Hands-on experience with generative AI methods, deep learning, natural language processing or reinforcement learning • Proven track record applying AI and ML to solve complex business problems, ideally in marketing, advertising or e-commerce • Strong proficiency in Python (PyTorch, TensorFlow, scikit-learn), SQL and cloud ML orchestration environments such as AWS, Databricks or Flyte • Experience with search marketing, ad auctions, bidding optimisation or customer segmentation is a plus • Skilled in rapid prototyping, hypothesis testing and iteration toward production-ready solutions • Experience applying statistical testing methods to marketing experiments, including A/B testing and test readouts • Able to design, monitor and maintain autonomous AI systems with appropriate safety and compliance measures • Able to troubleshoot operational AI issues and work with cross-functional teams to resolve them quickly • Strong communicator who can translate complex AI concepts into insights for both technical and non-technical audiences • Self-starter who proactively identifies opportunities to leverage AI for measurable business impact Accommodation requests If you need assistance with any part of the application or recruiting process due to a disability, or other physical or mental health conditions, please reach out to our Recruiting Accommodations Team through the Accommodation Request. We are proud to be named as a Best Place to Work on Glassdoor in 2024 and be recognized for award-winning culture by organizations like Forbes, TIME, Disability:IN, and others. Expedia Group's family of brands includes: Brand Expedia®, Hotels.com®, Expedia® Partner Solutions, Vrbo®, trivago®, Orbitz®, Travelocity®, Hotwire®, Wotif®, ebookers®, CheapTickets®, Expedia Group™ Media Solutions, Expedia Local Expert®, CarRentals.com™, and Expedia Cruises™. © 2024 Expedia, Inc. All rights reserved. Trademarks and logos are the property of their respective owners. CST: 2029030-50 Employment opportunities and job offers at Expedia Group will always come from Expedia Group’s Talent Acquisition and hiring teams. Never provide sensitive, personal information to someone unless you’re confident who the recipient is. Expedia Group does not extend job offers via email or any other messaging tools to individuals with whom we have not made prior contact. Our email domain is @expediagroup.com. The official website to find and apply for job openings at Expedia Group is careers.expediagroup.com/jobs. Expedia is committed to creating an inclusive work environment with a diverse workforce. All qualified applicants will receive consideration for employment without regard to race, religion, gender, sexual orientation, national origin, disability or age.