Jordan, fresh from signing a Toyota engine supply deal, have named their former car designer Mark Smith as the team's new technical director.
Jordan is hoping Smith can help revive his team's fortunes
Smith worked at Jordan from their entry into Formula One in 1991 until 2001, when he left to join Benetton.
The last Jordan car he worked on took the team to fifth place in the 2001 F1 constructors' championship.
Team principal Eddie Jordan said: "His work played a major part in our best performing cars over the years."
The Irishman added: "Mark's return to us as technical director, along with the recent deal securing Toyota engines, means every reason to be optimistic for 2005."
Jordan finished a lowly ninth in the 2004 constructors standings, earning just five points - only Minardi had a worse record.
Germany's Nick Heidfeld was their highest-placed driver, in 18th position with just three points.