Applications for PostDoc and PhD Projects

We are constantly seeking highly motivated PhD students and PostDocs who would like to join our team. We are particularly interested in researchers who have strong academic ambitions and a keen interest and solid background in infection biology and cell biology. We embrace diversity and multidisciplinarity.

 

If funds are available for specific PostDoc or PhD projects, the projects and application details are listed below. However, funding situations are dynamic and there are many additional funding opportunities (in particular for PostDocs) that can be explored together. Therefore, don’t hesitate to get in touch if you are interested in joining our team, even if no specific projects are listed below. Please send your CV (including names and e-mail addresses of up to 3 references) and a letter of motivation to barbara.sixt@umu.se (preferentially as single PDF file).

Current project opportunities

There are currently two fully-funded postdoc projects available in the lab. Please note that the application procedure differs between the two. Please see details below.

updated 11/02/2026

NEW – PostDoc Project 1: Postdoctoral Position in Intracellular Host-Pathogen Interactions (with focus on xenophagy evasion) 

Application Deadline: March 31, 2026

Environment: The postdoc will join the group of Dr. Barbara Sixt, a well-funded and highly international research team. The lab is based at Umeå University (UmU) in northern Sweden and is affiliated with the Laboratory for Molecular Infection Medicine Sweden (MIMS; which is a part of the Nordic EMBL Partnership for Molecular Medicine), as well as the Umeå Centre for Microbial Research (UCMR). These affiliations provide a stimulating and highly collaborative research environment with excellent access to state of the art facilities, training opportunities, and networking activities. Umeå University also has a strong postdoc community (Umeå Postdoc Society). Umeå itself is a vibrant university city known for its rich cultural life, strong academic community, and exceptional access to nature. It is widely recognized as an especially welcoming environment for international researchers.

 

Project: Chlamydia trachomatis (Ct) is a leading cause of urogenital and ocular infections worldwide. Its success as a pathogen hinges on its highly specialized developmental cycle and its obligate intracellular lifestyle that depends on precise modulation of host cell pathways. A key knowledge gap concerns how Ct protects its intracellular niche from xenophagy, a major cell-autonomous defense mechanism that targets intracellular pathogens for degradation. This project aims to uncover the molecular strategies Ct uses to evade xenophagic responses. Building on a strong set of unpublished findings from our laboratory, the postdoc will investigate the bacterial effectors and host factors involved, dissect their mechanisms of action, and determine how this interplay shapes infection outcomes. Ultimately, the insights gained are expected to lay the groundwork for innovative therapeutic approaches that enhance host defense pathways to control or eliminate Ct infection.

 

Responsibilities

  • Designing and performing experiments
  • Data analysis and manuscript preparation
  • Presentation of results internally and externally
  • Collaboration with other scientists
  • Mentoring junior lab members

Eligibility: To be appointed under the postdoctoral agreement, the candidate is required to have completed a doctoral degree or a foreign degree deemed equivalent to a doctoral degree in the subject areas of molecular biology, cell biology, infection biology, or a closely related field. This qualification requirement must be fulfilled no later than at the time of the appointment decision.

To be appointed under the postdoctoral agreement, priority should be given to candidates who completed their doctoral degree, according to what is stipulated in the paragraph above, no earlier than three years prior. If there are special reasons, candidates who completed their doctoral degree prior to that may also be eligible. Special reasons include absence due to illness, parental leave, appointments of trust in trade union organizations, military service, or similar circumstances, as well as clinical practice or other forms of appointment/assignment relevant to the subject area. These special reasons need to be clearly stated in the application.

  

QualificationsApplicants must have documented research experience in molecular genetic approaches, fluorescence microscopy, mammalian cell culture, and intracellular infection models. Experience in the mechanistic dissection of host-pathogen interactions, including the use of genetic screening approaches, is highly desirable. Prior research experience in the fields of autophagy or cell-autonomous immunity will be considered an advantage. Candidates should be passionate about scientific discovery, motivated to tackle challenging research questions, and committed to conducting high quality research. They are expected to be proficient in written and spoken English, to work effectively within an interactive and collaborative team, to contribute to mentoring junior researchers, and to demonstrate the ability to independently develop and drive a research project.

 

Project duration: This is a 2-year postdoctoral employment at Umeå University, supported by funding from the Swedish Research Council, with the possibility of prolongation depending on satisfactory performance.

 

Application procedureA full application should include:

  • Cover letter describing the applicant’s research experience and interests and motivation for applying for the position.

  • Curriculum vitae (CV) with publication list (including a brief description of the applicant’s contribution to each publication).

  • Verified copy of doctoral degree certificate or documentation that clarifies when the degree of doctor is expected to be obtained.

  • Contact information (including name, email address, and professional relationship to applicant) of two to three persons willing to act as references.

The application must be written in English (preferred) or Swedish. The application is made through Umeå University’s electronic recruitment system: Link to Application

 

Questions can be directed to Dr. Barbara Sixt (barbara.sixt@umu.se).

 

Timeline: Application review will begin immediately and continue on a rolling basis. For full consideration, please submit your application by March 31, 2026. The position will remain open until filled.

NEW – PostDoc Project 2: Postdoctoral Fellowship in Intracellular Host-Pathogen Interactions (with focus on advanced culture models) 

Application Deadline: March 31, 2026

Environment: The postdoc will join the group of Dr. Barbara Sixt, a well-funded and highly international research team. The lab is based at Umeå University (UmU) in northern Sweden and is affiliated with the Laboratory for Molecular Infection Medicine Sweden (MIMS, which is a part of the Nordic EMBL Partnership for Molecular Medicine), as well as the Umeå Centre for Microbial Research (UCMR). These affiliations provide a stimulating and highly collaborative research environment with excellent access to state of the art facilities, training opportunities, and networking activities. Umeå University also has a strong postdoc community (Umeå Postdoc Society). Umeå itself is a vibrant university city known for its rich cultural life, strong academic community, and exceptional access to nature. It is widely recognized as an especially welcoming environment for international researchers.

 

Project: Chlamydia trachomatis (Ct) is a major bacterial cause of both urogenital and ocular infections. Its unique developmental biology and obligate intracellular lifestyle rely on sophisticated virulence mechanisms that manipulate host cell functions to access nutrients and evade intrinsic defenses. Most current knowledge comes from simplified cell culture systems that do not reflect natural infection sites. This project aims to establish advanced culture models – including 3D cultures, co-cultivation with microbiota, and controlled variation of nutrient availability, pH, and oxygen levels – to determine how microenvironmental factors shape Ct growth, host responses, and Ct’s susceptibility to host cell defenses and antibiotics. In the long term, this knowledge gain is expected to support the development of more sustainable Ct‑targeted treatment strategies. 

 

Responsibilities

  • Designing and performing experiments
  • Data analysis and manuscript preparation
  • Presentation of results internally and externally
  • Collaboration with other scientists
  • Mentoring junior lab members

Eligibility: Candidates must hold a university degree equivalent to a European PhD in molecular biology, cell biology, infection biology, or a closely related field at the time of the appointment decision. Preference will be given to applicants who obtained their degree no more than three years before the day of the appointment decision, unless special circumstances apply.

  

QualificationsApplicants must have documented research experience in molecular genetic approaches, fluorescence microscopy, mammalian cell culture, and intracellular infection models. Experience with advanced cell culture systems – such as 3D cultures or organoids – is highly desirable. Prior experience in proteomics is also considered a strong asset, as the project includes collaborative proteomics analyses. Candidates should be passionate about scientific discovery, motivated to tackle challenging research questions, and committed to conducting high quality research. They are expected to be proficient in written and spoken English, to work effectively within an interactive team, to contribute to the mentoring of junior researchers, and to demonstrate the ability to independently develop and drive a research project.

 

Project duration: This is a 2-year postdoctoral fellowship funded by the Kempe Foundations, with the possibility of prolongation under employment terms depending on satisfactory performance.

Application procedure: Candidates are invited to submit their application per email to Barbara Sixt (barbara.sixt@umu.se). Applications should be submitted as a single combined PDF in English (preferred) or Swedish and must include:

  • Cover letter describing the applicant’s research experience and interests and motivation for applying for the position.

  • Curriculum vitae (CV) with publication list (including a brief description of the applicant’s contribution to each publication).

  • Verified copy of doctoral degree certificate or documentation that clarifies when the degree of doctor is expected to be obtained.

  • Contact information (including name, email address, and professional relationship to applicant) of two to three persons willing to act as references.

Timeline: Application review will begin immediately and continue on a rolling basis. For full consideration, please submit your application by March 31, 2026. The position will remain open until filled.