Hybrid Senior Data Scientist Consultant — Marketing AI

Keystone Solutions; Brussel Hoofdstad; Hybrid; EUR 90,000 - 130,000; Full time

Job summary

Keystone Solutions is seeking a Senior Data Scientist to join a Brussels-based client engagement as a K-Stone consultant. The role combines on-site work in Brussels (50%) with remote collaboration (50%), within a dynamic Marketing and Communication environment.

You will build and deploy responsible AI models to optimize campaigns, use LLMs for text tasks, and develop end-to-end pipelines. You will present clear, business-ready insights to stakeholders and ensure governance and explainability

Qualifications

• You have at least 5 years of relevant experience.
• Master's degree or higher in statistics, mathematics or computer science.

Responsibilities

• Tackle business challenges by creating responsible AI models for Marketing and Communication.
• Capture business needs, determine feasibility, build models and analyses to identify target groups and set up tests.
• Build models to support customer journey-driven marketing campaigns.
• Build pipelines that structure web analytics and use LLMs to detect customer intent.
• Develop and deploy automated summarization models using LLMs or NLP methods.
• Apply guidelines incl. explainability for building responsible AI models.
• Monitor and deploy AI models in production with a full tooling stack.
• Present technical concepts as clear, actionable insights to business owners and advise on model use in campaigns.

Skills

Python

scikit-learn

transformers

PyTorch

TensorFlow

LLMs for text classification

embedding models

MLflow

experiment tracking

Git

Bash

SQL

Next best action

Customer journey modeling

RAG

Interpretability

Guardrails

Validation

CI/CD

Production deployment

Education

Master's degree or higher in statistics / mathematics / computer science

Tools

MLflow

Git

Bash

SQL

SAS

Streamlit

Job description

Keystone Solutions is seeking a Senior Data Scientist to join a Brussels-based client engagement as a K-Stone consultant. The role combines on-site work in Brussels (50%) with remote collaboration (50%), within a dynamic Marketing and Communication environment.

You will build and deploy responsible AI models to optimize campaigns, use LLMs for text tasks, and develop end-to-end pipelines. You will present clear, business-ready insights to stakeholders and ensure governance and explainability