Postdoctoral Fellow – Jan Claesen Lab

Cleveland Clinic

Cleveland, OH

Job posting number: #7114284 (Ref:ccf16923435)

Posted: October 21, 2022

Application Deadline: Open Until Filled

Job Description

Highly motivated individuals with a PhD or MD/PhD in relevant area are encouraged to apply. This training position, under the direct supervision of a Cleveland Clinic Principal Investigator will provide practical training and experience in a research setting. The successful applicant will be able to demonstrate a commitment to research, a collaborative work ethic and strong communication skills, both written and verbal. This program is expected to be completed within 5 years.

Postdoctoral Fellow – Gut microbiome
We are looking for a Postdoctoral Fellow with expertise in bacterial molecular genetics, biochemistry or infectious diseases to investigate metabolites driving microbe-microbe interactions in the gut microbiome. This position is initially available for up to three years as part of a fully funded project. You will join the Claesen group at the Cleveland Clinic Lerner Research Institute and Center for Microbiome and Human Health. Visit us at:

Our group’s aim is to functionally characterize molecular mechanisms that control bacterial interspecies and microbe-host interactions in the human microbiome. Bacteria use small molecule chemicals to mediate these interactions and the genetic information required for their production is typically encoded in one physical location of the bacterial chromosome, in biosynthetic gene clusters (BGCs). Using in silico techniques, we identified several widespread families of BGCs that we are now characterizing experimentally, prioritizing on the BGCs predicted to be involved in modulation of community composition or interaction with the host immune system. Our research will contribute to a better mechanistic understanding of the microbes that live in our body, leading to the discovery of druggable small molecules, new targets for antibacterial therapy and beneficial bacterial strains that can be employed for intervention therapies.

Your profile
You will have (or are close to obtaining) a PhD degree in a relevant (bio)chemical or biological subject and a good publication record in peer-reviewed scientific journals. You’re a motivated and creative scientist with hands-on experience in any of the following areas: bacterial molecular genetics, (RiPP) natural products biosynthesis, biochemical assays, (germ-free) mouse infection/colonization models or microbiome science.

About us
The areas of expertise in the Claesen group include microbiology, bacterial genetics and synthetic biology, small molecule biosynthesis and biochemistry, and animal models for microbiome studies of metabolic disease and cancer development. We provide a stimulating, multidisciplinary training environment that will assist you in your successful scientific development. You will receive a competitive salary and benefits package, and have access to state-of-the-art core facilities in the Lerner Research Institute (, as well as plenty of opportunities for clinical collaboration at the Cleveland Clinic. Cleveland living is affordable and family friendly, offering a range in activities that include amazing nature parks, museums, major professional sports teams, an extensive theater district and blooming microbrewery scene.

How to apply
Contact Dr. Jan Claesen ([email protected]) for more info. To apply, please email your CV, a brief summary of research interests (no more than 2 pages) and contact information for 3 references.

Principal Investigator: Jan Claesen, PhD

Lerner Research Institute Department: Cardiovascular & Metabolic Sciences

Lab Research Topics:

Job Responsibilities:

  • Independent project design with the goal of data generation, analysis, interpretation and manuscript preparation
  • Cloning and expression of biosynthetic gene clusters
  • Biochemical characterization of gene cluster products
  • In vitro and in vivo validation of bioactivity
  • Participate in group meetings and activities


  • PhD or MD/PhD required
  • MD with relevant laboratory experience may substitute for PhD


  • English Proficiency proof required for candidates arriving on J-1, J-2, or F1 + OPT visa status

Work Experience:

  • Previous experience in a research or academic setting.  Graduate student experience meets this requirement.
  • Scientific writing experience

Personal Protective Equipment:

  • PPE per institutional requirements; may vary by laboratory

Preferred Application Materials:

All application materials should be submitted directly via email to Jan Claesen at [email protected]

  • CV
  • Short (1-2 page) research interests
  • List with 3 references

Keywords: Postdoc, Research, LRI, Microbiome, Microbiology, Gut, Bacteria, Bioactive molecules natural products, Biosynthesis, Gene clusters, Colon cancer, Metabolic syndrome, Diabetes, Bacterial infection

By embracing and understanding the diversity EVERY ONE brings, Cleveland Clinic has created an inclusive culture that promotes innovation, growth, and new ideas. This has enhanced our ability to attract the best global talent to provide the best patient experience possible. Cleveland Clinic is pleased to be an equal employment/affirmative action employer: Women/Minorities/Veterans/Individuals with Disabilities. Smoke/drug free environment.

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Job posting number:#7114284 (Ref:ccf16923435)
Application Deadline:Open Until Filled
Employer Location:Cleveland Clinic
United States
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