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Lead Data Scientist

Job in 2300, Leiden, South Holland, Netherlands
Listing for: Leiden Bio Science Park
Full Time position
Listed on 2026-06-02
Job specializations:
  • IT/Tech
    AI Engineer, Data Scientist, Machine Learning/ ML Engineer
Salary/Wage Range or Industry Benchmark: 80000 - 100000 EUR Yearly EUR 80000.00 100000.00 YEAR
Job Description & How to Apply Below

Johnson & Johnson Innovative Medicine Supply Chain (IMSC) Data Science and AI group is seeking a skilled and motivated Lead Data Scientist to play a key role in our transformation journey. In this position, you will apply innovative analytics to drive business improvement and create a competitive advantage, enhancing data‑driven decision‑making across the supply chain and beyond. The ideal candidate will work closely with business stakeholders to understand requirements, explore and experiment with cutting‑edge AI/ML solutions, and clearly communicate methodologies and results to both technical and non‑technical audiences.

Key Responsibilities
  • Collaborate with cross‑functional teams to understand business challenges and requirements, identify AI‑driven opportunities, and ensure effective deployment of AI solutions.
  • Experiment and implement cutting‑edge AI/ML solutions (such as natural language processing, deep learning, and predictive analytics, graph) to transform structured and unstructured data into business‑critical insights.
  • Continuously review and analyze academic research and industry publications, evaluate state‑of‑the‑art AI/ML methodologies, and prototype innovative solutions to address real‑world business problems.
  • Evaluate and refine AI models to enhance accuracy, efficiency, trustfulness and business impact in decision‑making processes.
  • Clearly articulate methodologies, results, and insights to non‑technical users and stakeholders, and present AI‑driven recommendations to senior leadership to ensure strategic alignment and impact.
Education and Experience
  • Bachelor’s degree in statistics, applied mathematics, computer science, engineering, or a related quantitative discipline is required.
  • Master’s or PhD in a quantitative field such as statistics, applied mathematics, computer science, engineering, or a related discipline from an accredited college or university is preferred.
  • 4–6 years of industry experience solving business problems through the application of statistical modeling, machine learning, deep learning, generative AI, and Retrieval‑Augmented Generation (RAG) techniques.
Qualifications
  • Advanced knowledge of traditional machine learning and deep learning foundations and algorithms, including classification, regression, clustering, transformer, reinforcement learning, and anomaly detection.
  • Solid understanding of Natural Language Processing (NLP) techniques and Generative AI (GenAI) applications.
  • Strong hands‑on experience with Python and relevant packages (e.g., Transformers, Lang Chain, Lang Graph, AG2, vLLM, pydantic, etc.).
  • Excellent communication and presentation skills, with the ability to convey complex technical concepts to both technical and non‑technical audiences.
  • Excellent problem‑solving skills and ability to work collaboratively in a team setting.
Preferred Qualifications
  • Deep understanding of agentic AI approaches, including the development of AI agents.
  • Exposure to containerization technologies (e.g., Docker) and cloud platforms (e.g., Azure) is a plus.
  • Working knowledge of vector databases (e.g., Elasticsearch, Pinecone, FAISS, Weaviate) for information and knowledge retrieval.
  • Strong familiarity with Git and version control best practices, with the ability to write clean, maintainable, and well‑documented code.
  • Solid understanding of RESTful API design principles and web service architecture.
Other
  • May require up to 10% of domestic and international travel.
Preferred Skills
  • Advanced Analytics
  • Business Intelligence (BI)
  • Coaching
  • Collaborating
  • Critical Thinking
  • Data Analysis
  • Database Management
  • Data Privacy Standards
  • Data Reporting
  • Data Savvy
  • Data Science
  • Data Visualization
  • Econometric Models
  • Process Improvements
  • Technical Credibility
  • Technologically Savvy
  • Workflow Analysis
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