**Description** The Si lab at Carnegie Mellon University is looking for postdoctoral candidates. Our lab's drive is to discover "biological laws" that can help us understand living systems in a quantitatively precise way. Toward this goal, we develop/adapt tools, do rigorous measurements, and define new concepts. We are currently searching for simple yet fundamental rules connecting the complicated form of bacterial cells and their fitness in different environments. Please check out the lab website for more descriptions of our research: https://sifangwei.github.io/ **Qualifications** We are mainly looking for candidates who aim for an academic career. We will walk you through the process of transitioning from a postdoc to an independent researcher. Our postdocs have been successful in their career development, such as earning the NSF postdoc fellowship. We are particularly interested in candidates who have done cell experiments and have PhD training in broadly defined bio-related areas (e.g., biophysics, microbiology, bioengineering, etc.). Additional experience in molecular biology or programming-based image analysis will be much welcome. The project(s) related to this position will be quantifying and redesigning the biophysical and physiological properties of bacterial cells using genetics, microscopy, microfluidics, and other multidisciplinary tools to discover quantitative relationships between cellular organization and cell fitness in different environments including extreme conditions. **Application Instructions** **Interested applicants are required to submit their application through Interfolio, including a current CV that outlines relevant experience and qualifications.** **While the names and contact information for three professional references are optional, they may be included to support your application.** **For questions about the position, please contact Prof. Fangwei Shi at** fsi@cmu.edu **Equal Employment Opportunity Statement** **Carnegie Mellon University** is an equal opportunity employer. It does not discriminate in admission, employment, or administration of its programs or activities on the basis of race, color, national origin, sex, disability, age, sexual orientation, gender identity, pregnancy or related condition, family status, marital status, parental status, religion, ancestry, veteran status, or genetic information. Furthermore, Carnegie Mellon University does not discriminate and is required not to discriminate in violation of federal, state, or local laws or executive orders. Consistent with this commitment, Carnegie Mellon will no longer be requiring or considering applicant diversity statements. If you are interested in this position and have not yet submitted a diversity statement, please do not do so. If you have already submitted a diversity statement, please know that any diversity statements submitted by applicants for this opportunity will not be considered in the hiring decision.