Principal AI Data Scientist (m/f/x)

Job description

Company Description

Accor Tech & Digital is the Group’s driving force for technology, digital solutions and transformation. Our 5,000 talents are committed to delivering the best digital and technology experiences to our customers, hotels and teams in 110 countries, and to shaping the future of hospitality. Accor Tech & Digital: roles where intelligence is first and foremost human!

Job Description

Accor Tech & Digital is the global hospitality leader’s laboratory for innovation and technological transformation. Our teams, known as Heartists®, bring together the best of hospitality and the best of technology and digital. Our ambition is to provide customers with personalized, memorable and sustainable experiences. We create new ways to travel across our 5,500 hotels, close to our 100 million customers in 110 countries. We are at the heart of an exciting landscape for technological transition and the design of digital products and services for our customers and hotel teams. Here, your scope has no borders. Dare to make an impact on the world with us!

Your greatest challenge awaits

Reporting to the SVP of Data Science & AI, you will join a team at the heart of Accor Group’s transformation through data and artificial intelligence. Within the Data Department, the Data Science & AI team defines and implements the Group’s AI vision, develops the use of machine learning, generative AI and agentic AI, and optimizes the business impact of these technologies on customer experience, hotel operations and internal teams. You will act as the technical lead responsible for guiding the design, development and deployment of machine-learning, generative-AI and agentic-AI solutions, as well as LLM platforms, to support high-impact business features and services.

Your mission

Contribute to end-to-end AI projects: framing, model selection, experimentation, deployment and continuous improvement. Design and implement LLM-based solutions (conversational assistants, agentic workflows, etc.). Define and lead Accor’s AI architecture, ensuring scalability, flexibility and alignment with technological developments. Establish and promote best practices in prompt engineering, model evaluation, MLOps and documentation. Collaborate with Data, Platform and Product teams to industrialize reliable, high-performing and monitored AI solutions. Support the Data & Engineering community on AI architectures, reusable components and development best practices. Maintain active technology monitoring and lead proofs of concept to evaluate new models, tools and frameworks.

Qualifications

Master’s degree in Engineering, Data Science, Computer Science or an equivalent field. At least 10 years of experience in Data Science and Machine Learning, including several years in deep learning, generative AI and LLMs. Proven experience designing, deploying and operating machine-learning and generative-AI solutions (chatbots, content generation, agentic workflows, etc.). Excellent communication skills, including the ability to explain generative-AI concepts, limitations and risks to non-technical stakeholders and influence strategic decisions. Strong command of Python and major AI/ML frameworks (PyTorch, LangChain, LangGraph, etc.), as well as RAG architectures, vector databases, embeddings and agent-orchestration frameworks. Proven experience with cloud environments and MLOps/LLMOps practices (AWS, MLflow, CI/CD, etc.), including LLM evaluation and observability, and monitoring costs, latency and quality at scale. Experience in hospitality, travel, retail or large-scale B2C/B2B environments is an advantage.

Additional Information

Our commitments

For the world: Accor is committed to the world around us, with a strong employer culture centered on developing our 300,000 talents. We take a continuous-improvement approach to reducing the environmental impact of digital across all our projects.

For your career: We enable all employees to manage their work-life balance and give them the means to shape their work environment to suit them. Training and career pathways are defined individually and collectively so that we grow together every day.

Specifically at Accor Tech & Digital: Work remotely several days per week from France, with flexible options to work from home, our offices or even our hotels and coworking spaces through Worklib. Every Wednesday afternoon, dedicate time to focused work and personal development. Work in a multicultural, English-speaking environment. Continuous improvement and training include hackathons, exceptional technology partnerships, dedicated talent management, certifications and a dedicated learning platform.

Also included: ALL – Heartist® program with preferential rates and flash offers for memorable stays and experiences at Accor locations and partner properties worldwide; Heartist® for Good volunteering program, with one paid workday to support an association; a Works Council (CSE) that helps fund cultural and sports activities; a sustainable-mobility allowance for using a “green” transport option or a company-bike scheme in partnership with Zenride; coverage of urban public-transport subscriptions between home and work according to the Finance Act scale; meal vouchers with a face value of €11; mandatory health insurance funded 50% by Accor, with no additional cost when eligible dependents join; and attractive working conditions including collaborative spaces, restaurants, games areas and on-site wellness and sports facilities or access through Gymlib.

Your talent and motivation are our only selection criteria. We value the richness of different nationalities, personalities and career paths. We adapt to employees’ specific needs, including those of people with disabilities. We encourage all applications regardless of gender—go ahead and apply!

For us, recruitment is above all about people meeting. Interested in this mission? Apply and we will offer a discussion with our recruitment team to introduce the key elements of the role or guide you toward a suitable position; one or more interviews with managers and team members; for some positions, a test or case study and a questionnaire about your personality and motivations; a final interview with our HR team to discuss Group culture, the work environment, training program, career prospects and Group benefits; and personalized feedback.