Renault has signed Sergey Sirotkin as a test driver with a long term development plan, with the youngster set to make his practice debut at this weekend's Russian Grand Prix.
Sirotkin, 20, finished third in his rookie GP2 campaign last year and will continue in the championship in 2016 in place of Stoffel Vandoorne at ART Grand Prix.
Sirotkin, who spent 2014 as Sauber's test driver, will replace Kevin Magnussen during the first practice session at Sochi this weekend.
"This is a great opportunity for me, although it has all come together so quickly," he said.
"I still can’t quite believe it. This is, however, the moment that all young racing drivers are working towards, and I am determined to learn as much as I can, as quickly as I can, doing the best possible job for the team while driving in FP1.
"Renault Sport, which I would like to thank, has shown many times that it is the best place for a driver to start his Formula 1 career, and I intend to make the most of this opportunity."
Sirotkin made his free practice debut at the Russian Grand Prix in 2014 for Sauber, having also conducted a day of testing for the Swiss squad earlier in the season.
Renault also has reigning GP3 champion Esteban Ocon and GP2 racer Nicholas Latifi signed as test drivers.