Arthur J.-Principal AI Architect & Founder | Modus Data GmbH
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Experience
Principal AI Consultant & Founder
Modus Data GmbH
Independent Swiss data science and applied AI consultancy: strategy, architecture, and hands-on delivery of custom AI, LLM, and MLOps projects. Available for fractional advisory, architectural audits, and end-to-end project delivery.
Senior AI Engineer
Mercedes-Benz CAC Maastricht NV
- LLM Hosting & Migration: Hosted open-weight LLM endpoints in Docker on Azure Container Apps; then led the migration from native Azure to Databricks with a self-hosted LLM endpoint, cutting infrastructure costs by 50%.
- AI Workflow Automation: Architected production-grade NLP pipelines for customer sentiment analysis, use-case summarization, and email classification.
- Performance Tuning: Optimized Apache Spark & Databricks pipelines and queries, increasing pipeline execution efficiency by 33%.
Senior Data Science Consultant
Daiichi Sankyo Europe GmbH
- Foundation Model: Training a foundational model on 100TB+ of medical images using Deep Learning & Computer Vision (ResNet, ConvNeXt, ViT), trained on GCP Vertex AI.
- Real-World Evidence (RWE): Data analysis and survival models (Scikit-Survival) for real-world evidence generation for anti-cancer therapeutics.
- LLM QA & Automated Compliance: Error detection in Clinical Study Reports using open/closed LLMs (Qwen, Transformers, LangChain, LangWatch).
Data Scientist / Generative AI Engineer
ZorgDomein
Developed a RAG-based NLP / generative AI recommender system with semantic search over large volumes of medical text, helping general practitioners find specialized healthcare services.
Tech Stack: Azure Machine Learning, Azure Synapse Analytics, Azure Databricks, OpenAI API, LangChain.
Senior Data Scientist / Analyst
Bunge
- Fuzzy Matching: Matched SAP and Salesforce records, as well as external datasets, using Jaro-Winkler similarity scoring.
- Developed and maintained models and data pipelines for the marketing and sales of food products.
Senior Data Scientist
Roche
Developed NLP algorithms to track unplanned events and fine-tuned LLMs to extract topics from large pharmaceutical texts, reducing the time subject matter experts spent solving drug production problems by over 70%.
Tech Stack: AWS (SageMaker, Athena, Redshift), Python, SQL.
Senior Data Scientist
T-Mobile Nederland
- Built fraud detection ML models (XGBoost, Random Forest, PySpark): the B2C model caught 2,000 cases of fraud over 12 months, saving €1M+; the B2B model is projected to save €3M+/year.
- Built ETL and data validation pipelines using Hive SQL, Hadoop, PySpark, and Great Expectations.
Senior Data Scientist
PwC Deutschland
Developed privacy-preserving NLP and GAN synthetic data models for financial documents in PwC's SaaS product DataMesh. Implemented NER using BERT, Spark NLP, and GPT models.
Senior Data Scientist
Maastricht University
Led quantitative data analysis, advanced predictive modeling, and machine learning research in medical imaging.
Industry experience
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Experienced in Healthcare, Education, Pharmaceutical, Telecommunication, Information Technology, and Professional Services.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Business Intelligence, Research and Development, Information Technology, and Product Development.
Summary
PhD-level AI Architect and Data Scientist with 10+ years of end-to-end experience deploying high-stakes machine learning, Databricks pipelines, and Large Language Model (LLM) architectures across heavily regulated sectors, including Life Sciences (Pharma/Biotech), Financial Technology, and Corporate Governance. Through Modus Data GmbH, I provide senior-level advisory, architectural audits, and hands-on technical delivery to Swiss and European enterprise clients, on a fractional or outcome-based freelance basis. Proven track record driving €500k+ in revenue growth and engineering fraud/compliance models generating €1M+ in direct operational savings.
Skills
- Ai & Machine Learning: Llms (Incl. Self-Hosted Open-Weight), Rag, Semantic Search, Fuzzy Matching / Entity Resolution (Jaro-Winkler), Pytorch, Transformers, Vision Transformers (Vit), Computer Vision (Resnet, Convnext), Scikit-Survival, Survival Modeling
- Data Engineering & Cloud: Databricks, Apache Spark / Pyspark, Delta Lake, Databricks Sql, Azure (Aml, Synapse, Container Apps), Aws (S3, Ec2, Athena, Redshift, Sagemaker), Gcp (Vertex Ai, Cloud Run), Docker, Sql
- Mlops & Engineering: Fastapi, Streamlit, Langchain, Mlflow, Ci/Cd, Git, Great Expectations (Data Testing), Pydantic, Terraform (Iac)
Languages
Education
Ruhr-Universität Bochum
PhD · Neuroscience · Bochum, Germany
The University of Manchester
MSc · Computational Neuroscience · Manchester, United Kingdom
Universiteit Utrecht
BSc · Computer Science · Utrecht, Netherlands
Certifications & licenses
Azure Data Fundamentals (DP-900)
Microsoft
Distributed Computing with Spark SQL
Databricks
MLOps Fundamentals & GANs Specialization
DeepLearning.AI
Statistics
Experience
Global experience
Expertise
Qualifications
Frequently asked questions
Have questions? Find more information here.
Arthur is based in Therwil, Switzerland.
Arthur speaks the following languages: Dutch (Native), English (Advanced), German (Intermediate).
Arthur has at least 12 years of experience. During this time, Arthur has worked in at least 6 different roles and for 9 different companies. The average length of individual experience is 1 year and 3 months. Note that Arthur may not have shared all experience and actually has more experience.
Based on recent experience, Arthur would be well-suited for roles such as: Principal AI Consultant & Founder, Senior AI Engineer, Senior Data Science Consultant.
Arthur's most recent position is Principal AI Consultant & Founder at Modus Data GmbH.
In recent years, Arthur has worked for Modus Data GmbH, Mercedes-Benz CAC Maastricht NV, Daiichi Sankyo Europe GmbH, ZorgDomein, and Bunge.
Arthur is most experienced in industries like Healthcare, Education, and Pharmaceutical. Arthur also has some experience in Telecommunication, Information Technology, and Banking and Finance.
Arthur is most experienced in business areas like Business Intelligence, Research and Development, and Information Technology. Arthur also has some experience in Product Development.
Arthur has recently worked in industries like Pharmaceutical, Healthcare, and Telecommunication.
Arthur has recently worked in business areas like Information Technology, Business Intelligence, and Product Development.
Arthur holds a Doctorate in Neuroscience from Ruhr-Universität Bochum, a Master in Computational Neuroscience from The University of Manchester and a Bachelor in Computer Science from Universiteit Utrecht.
Arthur has 3 certificates. These include: Azure Data Fundamentals (DP-900), Distributed Computing with Spark SQL, and MLOps Fundamentals & GANs Specialization.
Arthur will be available part-time from November 2026.
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Average rates for similar positions
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The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 11 Nov 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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