He scientifically designs, develops and establishes state-of-the-art bioinformatic methods, databases and high-throughput systems to enable fellow researchers finding answers to scientific questions which were previously not addressable or only hardly so. The popular Genome-to-Genome Distance Calculator (GGDC), the Type Strain Genome Server (TYGS) or the Virus Classification and Tree Building Online Resource (VICTOR) are a few highly-cited examples of his work. The positive reception of Jan’s work within the scientific community resulted in his inclusion in the lists of “Highly Cited Researchers 2020 – 2022” as awarded by the Web of Science™ supported by almost 15,000 citations since the beginning of his academic career.