Löffelsend played with various teams at youth level, including spells at SV Bergisch Gladbach 09, SV Union Rösrath and TV Herkenrath 09.[3] Following his time at Herkenrath, he had short spells with SV Straelen, Bonner SC, FC Hennef 05 and FC Wegberg-Beeck, appearing for the teams in both the Regionalliga West and Mittelrheinliga.[4] After signing with Wegberg-Beeck in July 2020, Löffelsend and the club mutually agreed to terminate his contract to allow him to accept a scholarship to play college soccer in the United States.[5]
College
Löffelsend attended the University of Pittsburgh in 2020, where he played two seasons, making a total of 36 appearances, scoring two goals and tallying 19 assists. In his two seasons with the Panthers, he was named All-ACC First Team twice, ACC Defensive Player of the Year twice, was a MAC Hermann Trophy semi-finalist twice, TopDrawerSoccer Best XI First Team, United Soccer Coaches South All-Region First Team twice, United Soccer Coaches Second Team All-America twice, and College Soccer News First Team All-America.[6]
Real Salt Lake
On 11 January 2022, Löffelsend was selected 81st overall in the 2022 MLS SuperDraft by Real Salt Lake.[7] On 22 February 2022, he signed with Salt Lake's MLS Next Pro side Real Monarchs.[8] However, on 27 February 2022, it was announced that Löffelsend had signed a one-year deal with Real Salt Lake's first team who compete in Major League Soccer.[9] He made his debut for the club the same day, appearing as an injury-time substitute during a 0–0 draw with Houston Dynamo.[10]
Colorado Rapids
On 10 January 2024, The Colorado Rapids signed Löffelsend from Real Salt Lake in exchange for Colorado’s natural second-round pick in the 2025 MLS SuperDraft pick and a 2024 International Roster Slot.[2]