Senior Data Scientist (W/M)

Lesaffre; Marcq-en-Barœul; Sur place; EUR 55 000 - 75 000; Plein temps

Résumé du poste

A family-owned company is seeking a Senior Data Scientist to lead AI transformation initiatives. You will design and implement advanced AI models that address complex business challenges across industrial and commercial activities. Collaborating with Product Managers and Data Engineers, you'll develop scalable solutions with a focus on quality. This role requires expertise in Python and various data tools, along with a collaborative mindset to work efficiently in cross-functional teams.

Prestations

Fresh working atmosphere

Gym

Restaurant

Teamwork opportunities

Qualifications

• 5+ years of experience as a Data Scientist in industrial, biotech or retail contexts.
• Proven experience delivering end-to-end AI projects and deploying them in production.
• Familiarity with generative AI models and AI code assistants.

Responsabilités

• Design and deliver end-to-end Data Science models.
• Collaborate to translate business needs into AI solutions.
• Monitor model performance and ensure continuous improvement.

Connaissances

Python

pandas

scikit-learn

PyTorch

TensorFlow

SQL

MLOps tools

Formation

MSc or PhD in Applied Mathematics, Computer Science, Engineering or related field

Outils

MLflow

Docker

Snowflake

Airflow

Description du poste

Company Description

Lesaffre is a global key player in yeasts and fermentation, designing, manufacturing and marketing innovative solutions for baking, food taste & pleasure, health care and biotechnology. The family‑owned company, founded in 1853 in northern France, now employs 11,000 people in more than 50 countries and is committed to better nourishing and protecting the planet.

Job Description

Within its global transformation, the Digital, Data & Tech (DD&T) department drives Lesaffre’s digital and data journey across four strategic pillars: Smart Operations, Augmented R&D, Customer Centricity and Empowered Enterprise.

As a Senior Data Scientist, you will be a key contributor to Lesaffre’s AI transformation, building advanced AI models to solve complex business challenges across industrial, R&D and commercial activities. You’ll work within an agile squad alongside Product Managers, Data Engineers and MLOps specialists, delivering reliable, scalable, and impactful AI solutions. As a technical expert you’ll ensure models are built with quality, explainability and measurable business value.

Responsibilities

1. Design and Delivery of AI Solutions

• Lead end‑to‑end development of Data Science models, from scoping to production.
• Build predictive, prescriptive and generative AI models to improve operational performance, quality and decision‑making.
• Collaborate with Product Managers, Data Engineers and business experts to translate needs into concrete solutions.

2. GenAI and Productivity Enhancement

• Use GenAI code assistants (GitHub Copilot, Claude, etc.) to accelerate coding, testing and documentation.
• Contribute to agentic AI and copilot initiatives, empowering employees through conversational interfaces.
• Promote responsible and efficient use of GenAI tools within the team.

3. Industrialization and MLOps

• Ensure robustness, reproducibility and scalability through MLOps standards (MLflow, DVC, CI/CD, Docker).
• Work with Data Engineers to optimise data pipelines and model serving in AWS / Snowflake environments.
• Monitor model performance, detect drift and pursue continuous improvement.

4. Governance and Ethics

• Apply Lesaffre’s AI Governance and Ethical AI Charter, ensuring fairness, transparency and compliance with the EU AI Act.
• Document models, datasets and assumptions to guarantee auditability and responsible AI practices.

5. Knowledge Sharing and Community Contribution

• Share expertise and best practices with peers across the AI Community of Practice.
• Support upskilling initiatives and contribute to methodological and technical excellence.

Qualifications

Education & Experience

• MSc or PhD in Applied Mathematics, Computer Science, Engineering or related field.
• 5+ years of experience as a Data Scientist, ideally in industrial, biotech or retail contexts.
• Proven experience delivering end‑to‑end AI projects and deploying them in production.

Technical Skills

• Proficient in Python, pandas, scikit‑learn, PyTorch or TensorFlow.
• Experience with generative AI models (LLMs, embeddings, RAG pipelines, vector databases).
• Familiarity with GitHub Copilot, Claude or similar AI code assistants.
• Skilled in SQL and Snowflake, with solid data‑engineering knowledge.
• Experience with MLOps tools (MLflow, DVC, Airflow, Docker, CI/CD).
• Strong data‑visualisation and communication skills.

Soft Skills

• Pragmatic, analytical and business‑oriented mindset.
• Collaborative, open to feedback and thrives in cross‑functional teams.
• Clear communication of complex topics.
• Fluent in English; French is a plus.

Benefits

We are a successful family‑owned company with long‑standing history where people truly matter. We promote a sense of fulfilment with a genuine mission: nourish and protect the planet. Our campus offers a fresh working atmosphere, a gym, a restaurant and many opportunities for teamwork and synergy.

At Lesaffre, diversity is a strength that enriches our culture and our teams. We are committed to offering a work environment where you can thrive, regardless of background, gender, age or abilities. All applications are encouraged, as diverse perspectives strengthen our ability to innovate and meet tomorrow’s challenges.