Solkrin was the first official employee of Cipsoft, started on july 8th 2003, he is still working there.
Source: https://tibia.fandom.com/wiki/Solkrin
Additional info: Knightmare has become official employee of Cipsoft one month later, on august 1st 2003, but he was unofficially helping them with the game development since 1997 or 1998, and played the game since 1997. He is still working there, and it seems he is the oldest unofficial worker. Tibia was launched on january 7th 1997. Knightmare interviews and stories
Question Revival VI contestMarch 16, 2025
Looking for new TibiaQA staff membersJuly 12, 2024
Interview with Solkrin - lead of the Customer Support team at CipSoftDecember 20, 2023