At Tesco Technology, we have an outstanding opportunity for a Data Scientist to work on Semantic Search projects We are looking for an experienced Data Scientist or a PhD graduate with Semantic Search, recommender systems or information retrieval or LLM experience. Join our team and take the lead in redesigning our customers engagement on our groceries website. By applying sophisticated technologies like semantic search and transformer models, and playing a pivotal role in improving the search functionality for millions of customers across multiple countries. This position allows someone to quickly make a meaningful impact and contribute to the seamless operation of our supply chain, transport, and delivery operations. We know life looks a little different for each of us. That’s why at Tesco, we always welcome chats about flexible working. Some people are at the start of their careers, some want the freedom to do the things they love. Others are going through life-changing moments like becoming a carer, nearing retirement, adapting to parenthood, or something else. So, talk to us throughout your application about how we can support. About the Team Join our world-class team of data professionals who are passionate about solving sophisticated business problems and deploying data products at scale. Our team works across various areas of our business, personalising our customers' experience across all touchpoints, both online and in-store. We are committed to personal and career development, providing on-desk training, support, and dedicating 10% of your working week to learning and professional growth. Additionally, there are opportunities to attend and speak at external and internal events, encouraging individuals growth as experts in the field. Our team values work-life balance, team days, and cultivates a relaxed yet engaging culture. This role can be based out of either our London (Farringdon) office or Welwyn Garden City office, offering the flexibility of hybrid working. Spend three days a week in the office and the remainder working from home. You will be responsible for: As a Data Scientist, you will influence the search experience on the Tesco website by utilising advanced technologies and collaborating with a team of seasoned Data Scientists, Machine Learning Engineers, and Software Engineers. You will be responsible for: Applying, modifying, and designing algorithms and models for information retrieval and re-ranking Advising on the systems architecture, Machine Learning components, and associated technologies Using data to train and fine-tune models Developing efficient and high-quality code in Software Engineering Collaborating closely with Search Engineers, ML Engineers, and Data Scientists Promoting data science internally and effectively communicating sophisticated solutions to non-technical colleagues LI-CC1 LI-Hybrid You will need: To excel in this role, we are seeking high-reaching individuals with a strong blend of Machine Learning and Software Engineering skills. The following requirements are important: An experienced Data Scientist or a PhD graduate with Semantic Search, recommender systems or information retrieval or LLM experience. Desirable: Experience with Semantic Search approaches and Vector Databases combined with experience of working with Search Engine frameworks, preferably Elasticsearch Strong coding skills, preferably in Python and a solid grasp of effective methods in Engineering, including version control, development driven by testing, and Continuous Integration Extensive knowledge and hands-on expertise with Deep Learning approaches, including modern language models based on transformer architecture PhD in a relevant field such as Mathematics, Engineering or Computer Science Join our Technology team and be part of a world-class team that is crafting the future of retail technology Apply now to seize this ambitious opportunity. What's in it for you: We’re all about the little helps. That’s why we make sure our Tesco colleague benefits package takes care of you – both in and out of work. Click Here to find out more Annual bonus scheme of up to 20% of base salary Holiday starting at 25 days plus a personal day (plus Bank holidays) Private medical insurance 26 weeks maternity and adoption leave (after 1 years’ service) at full pay, followed by 13 weeks of Statutory Maternity Pay or Statutory Adoption Pay, we also offer 6 weeks fully paid paternity leave Free 24/7 virtual GP service, Employee Assistance Programme (EAP) for you and your family, free access to a range of experts to support your mental wellbeing About us: Our vision at Tesco is to become every customer's favourite way to shop, whether they are at home or out on the move. Our core purpose is 'Serving our customers, communities and planet a little better every day'. Serving means more than a transactional relationship with our customers. It means acting as a responsible and sustainable business for all stakeholders, for the communities we are part of and for the planet. We are proud to have an inclusive culture at Tesco where everyone truly feels able to be themselves. At Tesco, we not only celebrate diversity, but recognise the value and opportunity it brings. We're committed to creating a workplace where differences are valued, and make sure that all colleagues are given the same opportunities. We're a big business with diverse working patterns and many business areas which means that we can find something that works for you. Everyone is welcome at Tesco. We have recently announced that we will be moving towards a more blended working week – combining office and remote working. Our offices will continue to be where we connect, collaborate and innovate. Please talk to us to about how this can work for you. NOTE: Should you be successful in your application, your offer will be subject to and conditional upon you providing your bank account details on your agreed start date. We're proud to have been accredited Disability Confident Leader and we're committed to providing a fully inclusive and accessible recruitment process. For further information on the accessibility support we can offer, please visit https://www.tesco-careers.com/accessibility