Natural language processing expert (m/f/d)

• Review and optimize a transformer architecture and training pipeline.
• Implement and experiment with advanced techniques to improve performance on fields with severe class imbalance.
• Conduct in-depth error analysis to identify patterns in misclassifications and propose data-driven improvements.
• Refine and validate the data processing, label mapping, and stratified data splitting procedures to ensure maximum reliability.
• Collaborate with our software architect to integrate the final, optimized model into a production-ready API for inference
• Document the final model architecture, training procedures, performance benchmarks, and best practices for future development.

• Educational background: advanced degree in AI/NLP or related field
• Min. 3 years hands-on experience fine-tuning Transformer models
• Demonstrable experience with multi-task and multi-label classification problems, expertise in handling severe class imbalance in text data
• Proficiency in deploying machine learning models as REST APIs
• Strong proficiency in PyTorch, including creating custom model architectures (e.g., multi-head classifiers) and custom loss functions
• Strong software engineering fundamentals and the ability to write clean, modular, and well-documented Python code, experience with Docker
• Professional proficiency in English
• Strong analytical and problem-solving skills, and collaboration abilities.

• Direct experience working with biomedical, scientific, or other technical document formats.
• Familiarity with advanced data splitting techniques for multi-label datasets.
• Experience with MLOps principles and tools.

• IT - IT Infrastructure & Operations
• Contracting
• Full Time
• ASAP - December 2025 Extension: to be discussed, depending on new project pipeline
• NLP

• Coopers Care

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