A call for 15 PhD positions (Early Stage Researchers, ESRs) is open within the context of the recently granted European Innovative Training Network project “BestTreat - Building a Gut Microbiome Engineering Toolbox for In-Situ Therapeutic Treatments for Non-alcoholic Fatty Liver Disease (NAFLD)”. BestTreat is a high profile consortium of 5 universities, 1 research center, 1 hospital and 7 companies distributed among Germany, Netherlands, Finland, Denmark, Austria, Sweden and China.