Lieutenant Commander Jörg Hillebrand was a Starfleet officer who lived during the early 25th century.
In 2401, he was serving aboard the USS Stargazer during the encounter with the Singularity. (PIC: "The Star Gazer")
Hillebrand was listed as a member of Starfleet's Research and Development on the dedication plaque of the USS Enterprise-G. (PIC: "The Last Generation")
This character was only mentioned in writing.
This officer was named for Star Trek fan Jörg Hillebrand who worked as a research consultant for seasons 2 and 3 of Star Trek: Picard. [1]