Senior Data Scientist

Closes on 23/11/2026BrusselsHybrid
Remuneration: 4.700 - 5.950 EUR/mo gross ·Freelance also possible

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Job description

We are looking for a Senior Data Scientist to build responsible AI models that make marketing and communication campaigns more relevant and effective. You will join a team of data scientists working on customer journeys, web analytics and language models, from the first business question through to production and impact measurement.

Your role

  • Capture business needs, assess feasibility and build models and analyses to identify relevant target groups.
  • Design tests to measure model impact and develop models supporting customer journey campaigns.
  • Build pipelines that structure web analytics and use LLMs to detect customer intent.
  • Develop and deploy automated summarisation models using LLMs or traditional NLP methods.
  • Apply responsible AI practices, including explainability, and monitor models in production.
  • Present technical concepts as actionable insights and advise business owners on the use of models.

You have

  • English at C2 level, spoken and written.
  • Dutch or French at C2 level, spoken and written.
  • A master's degree or higher in a quantitative field, or another academic background with substantial data science experience.
  • At least five years of relevant data science experience.
  • Expertise in Python programming.
  • Knowledge of scikit-learn.
  • Knowledge of transformers in the Python data science environment.
  • Knowledge of PyTorch.
  • Knowledge of TensorFlow.
  • Proven experience fine-tuning, evaluating and operationalising LLMs for production in marketing.
  • Proven experience fine-tuning, evaluating and operationalising embedding models for production in marketing.
  • A solid understanding of statistical methods.
  • A solid understanding of experiment design.
  • A solid understanding of traditional machine learning algorithms.
  • A solid understanding of deep learning algorithms.
  • Expertise in text classification using LLMs.
  • Expertise in retrieval-augmented generation.
  • Expertise in LLM interpretability.
  • Expertise in LLM guardrails.
  • Expertise in validating LLM predictions.
  • Hands-on experience with MLflow for experiment tracking and model versioning.
  • Hands-on experience with CI/CD pipelines in AI and ML workflows.
  • Expertise in customer journey modelling, such as next best action.
  • Knowledge of Git.
  • Knowledge of Bash.
  • Knowledge of SQL.

A plus

  • Experience with active learning techniques to improve models iteratively.
  • Experience with uplift modelling.
  • Experience with marketing mix modelling.
  • Experience with optimisation under constraints.
  • Knowledge of SAS.
  • Knowledge of Streamlit.
  • Ownership and the ability to drive projects end to end with minimal guidance.
  • The ability to turn data insights into actionable business recommendations.
  • The ability to learn quickly.
  • The ability to work autonomously.
  • Clear and concise communication.
  • The ability to work as part of a team.
  • A proactive approach.
  • A focus on results.
  • An analytical mindset.
  • A problem-solving mindset.

Working at Neurho

Founded in 1998, Neurho is a Belgian IT and business consultancy. For more than 25 years, we have been helping banks, insurers, energy companies and public institutions in Belgium and Luxembourg with their transformation projects. At Neurho, you work on varied and challenging assignments, where your expertise is recognised and your growth encouraged. On top of your salary, you enjoy many extra-legal benefits, designed to suit your role, your needs and your personal wishes.

Neurho is committed to equal opportunity and welcomes every application, regardless of age, origin, nationality, gender, social background, beliefs or disability.