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Student Research Assistant (Hiwi) Position for MOSAIC Project

September 10th, 2025

Project Title: MOSAIC – Malignant cell atlas based On Single-cell trAnscrIptomiCs
Institution: RWTH Aachen University / University Hospital RWTH Aachen
Duration: 12 months

Job Type HiWi
Extent 10-15h
Status Open
Contact(s)

Project Background

Cancer heterogeneity is a major factor driving differences in treatment response and drug resistance. The MOSAIC project aims to build the first cross-cancer malignant cell atlas using single-cell transcriptomics (scRNA-seq) and advanced deep learning foundation models.

Our goal is to develop large-scale self-supervised AI models (based on Transformers and Graph Neural Networks) to tackle key biological and clinical tasks, such as:

  • Cell type annotation
  • Gene regulatory network inference
  • Perturbation-response prediction
  • Clinical phenotype prediction

This is an interdisciplinary collaboration between experts in computer science, artificial intelligence, biology and medicine at RWTH Aachen University.

Responsibilities

  • Contribute to the development and implementation of deep learning models (e.g., Transformers, GNNs) in PyTorch.
  • Assist in preprocessing and standardizing single-cell transcriptomics datasets (including normalization and batch-effect correction).
  • Support the design of large-scale model pretraining and fine-tuning pipelines.
  • Collaborate with computer scientists and biomedical researchers to apply models in real-world biological contexts.

What We Offer

  • Opportunity to work in an interdisciplinary and international research team (Computer Science + Biomedical Research).
  • Hands-on experience with large-scale biological datasets and state-of-the-art AI methods.
  • Flexible working hours (approx. 14h/week student assistant contract).
  • Possibility to contribute to scientific publications and project outcomes.

How to Apply

Please send your CV (in English or German), the transcript of current grades, and a short motivation letter to:

  • Dr. Sikander Hayat: shayat@ukaachen.de
  • CC Yongli Mou, M.Sc.: mou@dbis.rwth-aachen.de

Prerequisites:
  • Enrolled Master student in Computer Science or a related field.
  • Strong background in machine learning and deep learning, including self-supervised and contrastive learning methods.
  • Proficiency in Python, especially PyTorch and Hydra.
  • Familiarity with high-performance computing environments (GPU/cluster) is a plus.
  • Basic knowledge of biology or single-cell transcriptomics is highly desirable.