Senior Scientist, Data Science

7300-Janssen-Cilag S.A. Legal Entity; Madrid; On-site; EUR 56,000 - 89,000; Full time

Benefits offered by this job

Vacation days

Parental leave

Bereavement leave

Caregiver leave

Volunteer leave

Well-being reimbursement

Insurance programs

Job summary

Johnson & Johnson is seeking a Senior Scientist, Data Science to design, develop, evaluate and deploy AI systems that accelerate regulatory and technical workflows across Therapeutics Development & Supply. This hands-on role partners with product, manufacturing, quality, and data teams to build LLM applications and agentic automation in regulated environments.

You will contribute to risk-aware AI practices, implement reusable components, and deliver solutions that improve scientific decision

Qualifications

• Degree in Engineering, Data Science, Life Sciences, Computer Science or related field.
• 1–3 years hands‑on AI/ML/NLP development experience with LLMs.
• Working knowledge of Pharmaceutical Product Development (CMC).
• Proficiency in Python with ability to test and document code.
• Strong communication to explain technical topics to non‑technical stakeholders.

Responsibilities

• Develop, test, and deploy AI solutions for documentation, retrieval, evidence synthesis, and decision support.
• Build and test components of agentic AI workflows across multi‑step scientific processes.
• Apply software engineering practices with documentation and lifecycle management.
• Collaborate with regulatory, quality, CMC, and scientific teams to translate needs into AI solutions.

Skills

AI/ML development

NLP

Communication skills

Regulated environments awareness

Education

Degree in Engineering/Data Science/CS or related

Advanced degree preferred

Tools

LangGraph

DSPy

mem0

Job description

At Johnson & Johnson,we believe health is everything. Our strength in healthcare innovation empowers us to build aworld where complex diseases are prevented, treated, and cured,where treatments are smarter and less invasive, andsolutions are personal.Through our expertise in Innovative Medicine and MedTech, we are uniquely positioned to innovate across the full spectrum of healthcare solutions today to deliver the breakthroughs of tomorrow, and profoundly impact health for humanity.Learn more at jnj.com. As guided by Our Credo, Johnson & Johnson is responsible to our employees who work with us throughout the world. We provide an inclusive work environment where each person is considered as an individual. At Johnson & Johnson, we respect the diversity and dignity of our employees and recognize their merit. Please note that this role is available across multiple countries and may be posted under different requisition numbers to comply with local requirements. While you are welcome to apply to any or all of the postings, we recommend focusing on the specific country(s) that align with your preferred location(s): Belgium R-108704, Spain R-106736 Remember, whether you apply to one or all of these requisition numbers, your applications will be considered as a single submission.

Job Function: Data Analytics & Computational Sciences Job Sub Function: Data Science Job Category: Scientific/Technology All Job Posting Locations: Madrid, Spain, Turnhout, Antwerp, Belgium

Job Description: POSITION SUMMARY The R&D Data Science organization is seeking a Senior Scientist, Data Science to contribute to the design, development, evaluation, and deployment of AI and generative AI systems that accelerate scientific, regulatory, and technical workflows across Therapeutics Development & Supply (TDS). This hands‑on individual contributor works across Product Development, Manufacturing, Clinical Supply Chain, Quality, and Digital and Data Science teams to develop LLM applications, agentic workflows, and AI‑driven automation solutions specific to TDS. Key use cases include scientific and regulatory document authoring, evidence‑based response generation, knowledge retrieval and synthesis, technical decision support, and workflow automation. Working with guidance from senior technical colleagues in DDSAI, the role delivers defined components and workflows within agreed priorities and milestones, using established architectures, reusable components, evaluation standards, and responsible AI practices. A successful candidate combines practical AI development skills with an understanding of pharmaceutical CMC development and seeks technical input on complex design decisions, risks, and delivery challenges.

KEY RESPONSIBILITIES

• AI Solution Development & Delivery
  • Develop, test, and support deployment of AI solutions for documentation, knowledge retrieval, evidence synthesis, and decision support in the TDS ecosystem, with guidance on solution design and implementation.
  • Build and test defined components of agentic AI workflows that coordinate models, tools, data, and human review across multi‑step scientific and supply chain processes.
  • Implement and adapt reusable AI capabilities using established DDSAI AI/ML architectures and platform standards.
  • Work with scientific, regulatory, and operational stakeholders and senior technical colleagues to translate defined needs into AI solution requirements and implementations for regulated environments.
• Technical Rigor & Responsible AI
  • Apply established evaluation frameworks for LLM systems, including rubrics, traceability, robustness, uncertainty, and usability; contribute test cases and analysis to improve these frameworks.
  • Follow responsible AI practices, including human‑in‑the‑loop validation, risk assessment, content safety, and governance, with guidance on identifying and escalating risks.
  • Apply software engineering practices, including modular design, testing, documentation, and lifecycle management, with code review and technical guidance.
  • Contribute implementation experience and evaluation findings to best practices for LLM, RAG, and agentic AI systems across DDSAI and TDS.
• Cross‑Functional Collaboration
  • Work with regulatory, quality, CMC, scientific, and technical stakeholders to clarify use‑case requirements, validate outputs, and support adoption.
  • Collaborate with DDSAI AI/ML to use shared infrastructure, established architectures, evaluation methods, and reusable components.
  • Communicate implementation progress, evaluation results, system limitations, and risks to technical and non‑technical stakeholders; seek guidance when issues affect scope, design, or delivery.

QUALIFICATIONS

• Required · Degree in Engineering, Data Science, Life Sciences, Computer Science, or related field; advanced degree preferred.
• Required · 1–3 years of hands‑on experience developing AI, NLP, or machine learning solutions, including practical experience applying large language models (LLMs).
• Required · Working knowledge of Pharmaceutical Product Development, including Chemistry, Manufacturing and Controls (CMC).
• Required · Proficiency in Python, with experience developing, testing, and documenting code.
• Required · Strong communication skills, with the ability to explain technical topics to non‑technical stakeholders.

• Preferred · Exposure to open‑source agentic frameworks (e.g., LangGraph, DSPy, mem0).
• Preferred · Familiarity with retrieval‑augmented generation, embeddings, vector databases, and model evaluation.
• Preferred · Exposure to working in regulated environments (GxP).
• Preferred · Familiarity with responsible AI frameworks, content safety practices, and AI governance in regulated environments.

Why This Role Is Unique

This is a rare opportunity to grow in one of the world’s most ambitious and fast‑growing R&D Data Science organizations, shaping how Therapeutics Development & Supply data powers next‑generation therapies in the largest biomedical company on the planet. Your work will directly accelerate Johnson & Johnson’s scientific discovery, fuel AI innovation, and impact patients globally.

Benefits

The anticipated base pay range for this position is: €56,000.00 - €88,780.00

• an annual bonus with set target (% of pay) depending on pay grade / location, where the actual amount is based on the employees’ and companies’ performance of the previous calendar year, or sales commissions.
• vacation days
• parental leave for a minimum of 12 weeks
• bereavement leave
• caregiver leave
• volunteer leave
• well-being reimbursement
• programs for financial, physical and mental health.
• We also offer service anniversary and recognition awards, and subject to the terms of their respective plans, employees - and in some location’s eligible dependents - can participate in several insurance plans.

*This is for informative purposes only. Amounts and actual benefits may vary by location and are subject to change.

At Johnson & Johnson,we believe health is everything. Our strength in healthcare innovation empowers us to build aworld where complex diseases are prevented, treated, and cured,where treatments are smarter and less invasive, andsolutions are personal.Through our expertise in Innovative Medicine and MedTech, we are uniquely positioned to innovate across the full spectrum of healthcare solutions today to deliver the breakthroughs of tomorrow, and profoundly impact health for humanity.Learn more at https://www.jnj.com/. Our Credo calls on us to respect the dignity of every individual and create an environment for all people to thrive. Throughout the recruitment process - from application through hiring - we are committed to providing reasonable accommodations/adjustments for qualified candidates with disabilities. If you need support at any stage of the recruitment process, please complete our candidate accommodation request form so we can assist you.

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