Jürgen
Dietrich.
AI Consultant.

Senior Data Scientist with 25+ years in the pharmaceutical industry. Specialising in GxP-validated AI, pharmacovigilance NLP, multi-agent LLM systems, and the regulatory science of AI in drug safety.

Location  Berlin, Germany ORCID  0000-0002-5494-3499 Languages  DE · EN · FR · ES · RU · UA
GxP-Validated AI Pharmacovigilance NLP Multi-Agent LLM Graph Neural Networks Signal Detection CFR Part 11 GAMP5 Named Entity Recognition Drug Safety Regulatory AI FAERS · EudraVigilance Python · SQL LLM Fine-tuning Computer System Validation
What I Do

Expertise

⚗️

GxP-Validated AI Systems

Design, development and validation of ML systems in controlled pharmaceutical environments. CFR Part 11, GAMP5, FDA TPLC lifecycle. Fractional k-fold methodology for training data sufficiency.

🔍

Pharmacovigilance NLP

NER systems for adverse event detection in unstructured text (social media, publications, patient reports). Production ML at Bayer AG. WHO Drug Dictionary mapping. Corpus design for regulated environments.

🤖

Multi-Agent LLM Pipelines

Architecture and development of heterogeneous LLM ensembles. Adversarial advocate systems, fact-checking agents, supervisor consensus logic. Multi-provider (OpenAI, Anthropic, Google).

🧬

Molecular AI & Drug Safety

Graph Neural Networks for drug toxicity prediction. Gap taxonomy methodology for structure-based prediction limits. GNNExplainer-based pharmacophore attribution. MNAR quantification in cheminformatics.

📋

Regulatory Science

AI governance in pharmaceutical contexts. GVP Module IX signal management. NAM qualification and mechanistic coverage assessment. EMA AI Workplan implications for drug safety systems.

🎓

Training & Consulting

AI project management for pharma. Validation consulting for AI-based CROs. Training data development for client-specific NLP systems. CRO qualification audits for AI service providers.

Research

Selected Publications

2026

What Molecular Structure Cannot Tell Us: A Taxonomy of Explainability Gaps in GNN-Based Drug Toxicity Prediction

2026

Can Multi-Agent LLMs Identify Their Peers? Stylometric Fingerprinting in Role-Constrained Political Analysis

2026

Beyond Acoustic Emotion Recognition: Multimodal Pathos Analysis in Political Speech Using LLM-Based and Acoustic Emotion Models

2026

Peer Identity Bias in Multi-Agent LLM Evaluation: An Empirical Study Using the TRUST Democratic Discourse Analysis Pipeline

2026

From Safety Risk to Design Principle: Peer-Preservation in Multi-Agent LLM Systems

2025

Performance and Reproducibility of Large Language Models in Named Entity Recognition: Considerations for Controlled Environments

Drug Safety  ·  doi:10.1007/s40264-024-01499-1 Peer-reviewed
2023

Provision and Characterization of a Corpus for Pharmaceutical, Biomedical Named Entity Recognition for Pharmacovigilance

Drug Safety  ·  doi:10.1007/s40264-023-01322-3 Peer-reviewed
2022

Supervised Machine Learning-Based Decision Support for Signal Validation Classification

Drug Safety  ·  doi:10.1007/s40264-022-01159-2 Peer-reviewed
2021

Fractional k-fold Cross-Validation — Determination of Training Data Sufficiency for ML Systems in GxP Environments

Patent Application (Bayer AG) Patent
2020

Adverse Events in Twitter: Development of a Benchmark Reference Dataset — Results from IMI WEB-RADR

Drug Safety  ·  doi:10.1007/s40264-020-00912-9 Peer-reviewed
Background

Professional Experience

Self-employed
2025 – Present
Berlin

Senior Lead Data Scientist & AI Consultant

Creator of TRUST (multi-agent LLM pipeline for democratic discourse analysis). Developer of medDetect (pharmaceutical NER system, commercially deployed). CRO qualification audits for AI-based pharmacovigilance service providers. AI system validation consulting.

Bayer AG
2021 – 2025
Berlin

Senior Lead Data Scientist

Subject Matter Expert and designer of AEDE — Bayer's production ML system for automated adverse event detection from unstructured sources (Twitter/X, PubMed, customer calls). Novel fractional k-fold cross-validation methodology for GxP environments. 2 patent applications.

Bayer AG
2017 – 2021
Berlin

Senior Project & Innovation Manager, Global PV

Bayer's representative in IMI WEB-RADR (EU initiative for social media in pharmacovigilance). Innovation projects: signal detection, NLP for benefit analysis, deep learning for case processing. 4 Drug Safety publications.

Bayer AG
2011 – 2017
Berlin

Head, Global PV System Maintenance

Responsible for GCP-compliant maintenance of Bayer's global pharmacovigilance system ARGUS — adverse event collection, evaluation, and regulatory reporting.

Schering AG
1998 – 2006
Berlin

Global Project Manager

GCP-compliant global planning and tracking system for clinical studies (IMPACT). GMP-compliant manufacturing system for Investigational Drug Supplies. Full lifecycle GxP computer system validation.

Get in Touch

Contact

Location
Hillmannstrasse 20B · 13467 Berlin