Nexeo Belgium is a consulting company supporting clients in the banking, finance, insurance, and public sectors throughout their transformation projects.

We are currently looking for a Senior Data Scientist to join the Predictive Models Team within the Marketing and Communication department of a leading organization.

Mission Context

The Predictive Models Team provides responsible AI models to enable impactful and efficient campaigns by optimizing reach and relevance for customers and employees.

As a Senior Data Scientist, you will tackle various business challenges, build models to support customer journey-driven marketing campaigns, and collaborate closely with a team of motivated data scientists eager to share expertise and learn continuously.

Key Responsibilities

• Capture business needs, determine feasibility, and design predictive models to identify the most relevant target groups
• Build, deploy, and monitor responsible AI models, including using LLMs for text classification and summarization
• Create pipelines to clean and structure web analytics data and detect customer intent
• Apply best practices for AI model explainability, interpretability, and validation
• Translate technical insights into actionable business recommendations for Marketing and Communication teams
• Support campaign measurement, testing, and adoption of AI-driven solutions

Profile

Languages

• English – Fluent
• Dutch – Fluent OR French – Fluent

Education

• Master’s degree or higher in a quantitative field (Statistics, Mathematics, Computer Science) or equivalent experience

Experience & Technical Skills

Mandatory

• 5+ years of experience in data science and predictive modeling
• Expert in Python and Python data science libraries (scikit-learn, PyTorch, TensorFlow)
• Expertise in customer journey modeling (e.g., next best action)
• Strong knowledge of ML algorithms, statistics, and experiment design
• Expertise in LLMs for text classification, summarization, and responsible AI practices
• SQL, git, bash

Preferred

• Incremental learning, uplift modeling
• Marketing Mix Modeling and optimization under constraints
• SAS, Streamlit

Soft Skills

• Take ownership and drive projects end-to-end
• Translate data insights into actionable business decisions
• Quick learner, autonomous, analytical, and problem-solving mindset
• Team player with clear and concise communication
• Proactive and results-oriented

This is a high-impact opportunity to work on AI-driven predictive models within marketing and communication, collaborating with a team of experts and influencing campaign outcomes with advanced analytics.

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