Senior Data Engineer - WBAA Discovery Domain

ING's WBAA Discovery team is seeking a Senior Data Engineer / ML Engineer to explore and validate AI opportunities within Wholesale Banking. You will work end-to-end from problem framing with stakeholders to building rapid proofs-of-concept and handing over to build teams. The role requires strong Python and AI integration skills, including LLMs and RAG, combined with data engineering and cloud deployment expertise.

• Turn ambiguous business questions into feasible analytics solutions through end-to-end work: problem framing, data exploration, feasibility assessment, rapid prototyping, and clear recommendations.
• Collaborate with stakeholders to define, validate, and prioritize AI opportunities, ensuring alignment with business impact, re-use, scalability, and strategic fit.
• Build rapid proofs-of-concept and prototypes, then prepare handover packages for build teams, ensuring compliance with banking standards.
• Manage stakeholder expectations and communicate complex topics to both technical and non-technical audiences.

• Strong Python programming proficiency.
• Demonstrated expertise in AI integration, including working with large language models (LLMs) such as Gemini and Claude, implementing RAG patterns, designing and evaluating prompts, and utilizing vector databases.
• Ability to explore data quickly and assess feasibility (data availability/quality, constraints, expected business impact).