Data Scientist leveraging data analytics and machine learning to improve fraud detection systems at Barclays. Collaborating with stakeholders to enhance operational efficiency and strategic decision - making.
About the role
- Senior Data Scientist focusing on Generative AI at Libri, developing and implementing AI solutions in AWS, enhancing customer service and marketing.
Responsibilities
- Develop and implement generative AI systems in our AWS cloud — e.g., for customer service (AI assistant), internal knowledge work (enterprise GPT), personalization in the online shop, or marketing (generative image AI)
- Select suitable LLMs, adapt them and develop custom models, for example for text classification or forecasting
- Translate business requirements into technical solutions in collaboration with the relevant business units
- Drive AI initiatives together with the team and our AI task force — from employee training to building the AI architecture
- Evaluate new methods (LLMs, RAG, recommender systems, forecasting)
- Work closely with data engineers, analysts and data scientists — including cross-cutting topics such as data integration and the further development of our AWS infrastructure
Requirements
- A completed degree in Data Science, Computer Science or a comparable field — or equivalent practical training
- Several years of experience successfully deploying data science and AI models into production in a corporate environment
- Strong knowledge of Python and common libraries (e.g., PyTorch, Pandas, LangChain)
- Solid experience with cloud engineering (ideally AWS) to bring models into production within our infrastructure
- Confident handling of databases (Postgres, Redshift, vector DBs) and APIs
- Strong communication skills and enjoyment in explaining complex topics clearly
- Proactive, solution-oriented work style and a desire to drive innovation within the team
- Fluent German (C1), both spoken and written
Benefits
- A permanent position with 38.5 hours per week and flexible working hours (flexitime)
- Varied responsibilities that combine personal accountability with team spirit
- A great team, full support, thorough onboarding and opportunities for further training
- An open atmosphere with short communication lines and fast decision-making processes
- A versatile, independent and designable working environment, both in the office and from home
- Contractual and other benefits, such as 30 days’ vacation, a €29 Germany public transport ticket, corporate benefits and employee discounts
- A modern workplace at the Hamburg-Bahrenfeld location with direct S-Bahn and A7 connections
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