Marius Liesegang was born in Magdeburg in 2000 and grew up in a highly athletic family. His father, Sven Liesegang, was a successful handball player who won the Champions League with SC Magdeburg in 2002. Marius, however, chose football and decided early on to take on the specialised role of goalkeeper. He took his first steps at 1. FC Magdeburg, progressing through all the club’s youth teams. In 2016, he moved to the youth academy of 1. FSV Mainz 05.
Liesegang continued to develop steadily in Mainz. He initially guarded the goal for the U17 and U19 teams before making the leap to the club’s second team. There, he gained his first experience in senior football in the Regionalliga Südwest. His progress was recognised by the club: in 2020, at the age of 20, he signed a professional contract with the Bundesliga side and began training regularly at the highest level.
In January 2022, Liesegang left Mainz to join Dynamo Dresden, who were then in the second division. Although he was part of the professional squad at SGD, he did not make any competitive appearances during the second half of the season. After six months, he headed north, joining FC Teutonia 05 Ottensen in the summer of 2022. In Hamburg, he gained the regular playing time he had previously lacked and established himself as the first-choice goalkeeper in the Regionalliga Nord. In total, he made 65 appearances for Teutonia. A highlight of his time there came in August 2023, when he faced the eventual German champions, Bayer Leverkusen, in the DFB-Pokal as part of the underdog squad.
For the 2024/25 season, Liesegang joined FC Carl Zeiss Jena. At this club with a rich history, he quickly assumed the role of number one goalkeeper and established himself as a reliable last line of defence. With his composure, presence, and footballing ability, he has become a fixture in the Jena goal. In his first two seasons with FCC, Liesegang made 67 competitive appearances, keeping 23 clean sheets.
Their shared journey continues in the summer of 2026. Although other options were available to him, Liesegang extended his contract in Jena early, running until 2027. For the now 26-year-old, staying put was—in his own words—a decision made „straight from the heart.“ The club, meanwhile, regards him as a reliable constant and a vital part of the squad. Liesegang has thus found a sporting home in Jena—and, following his time in youth academies and stints in Dresden and Hamburg, has firmly established himself as a first-choice goalkeeper in senior football.