Mexican Esteban Gutierrez will race with Swiss-based Sauber for a second season next year with Russian teenager Sergey Sirotkin signed as test driver, the Formula One team announced on Saturday.
Gutierrez will partner experienced German driver Adrian Sutil, who has moved from Force India to replace Nico Hulkenberg in a direct switch with his compatriot.
Sauber also announced the continuation of their sponsorship agreement with Mexican telephone company Telmex, who have backed the racing careers of both Gutierrez and compatriot Sergio Perez.
Telmex will remain a premium partner with their logo having a significant presence on the team's cars. Formula One had hoped for a Mexican Grand Prix next year but those plans have now been pushed back to 2015.
"It was a steep learning curve last season, but by working closely with the team I was able to improve continuously"
The driver announcement left only back-markers Caterham and Marussia with race seats remaining for 2014 while Britain's Paul Di Resta is out of a job after losing his place at Force India.
"It was a steep learning curve last season, but by working closely with the team I was able to improve continuously," said Gutierrez, 22, who ended the year as the highest-scoring rookie with six points after a difficult start.
"It will be my fourth year with the team, the second as a racing driver, and I feel comfortable in taking the next step," he added.
"The technical challenges in 2014 will be massive. Therefore it will be even more important to know well the people you are working with. I will do my very best to improve even more and support the team the best way I can."
Sauber principal Monisha Kaltenborn was confident the driver would get better.
"Often the results didn't fully reflect his performances," she said of this year.