AN Uber driver is facing sexual assault charges after a woman was allegedly attacked during a ride in January.

A woman in her 20s was allegedly indecently assaulted by an Uber driver during a journey from South Guildford to Victoria Park on January 8.

A Sex Assault Squad investigation led detectives to charge a 31-year-old man from Armadale with sexual penetration without consent and two count of indecent assault.

He will appear before the Perth Magistrates Court today.

Police have notified the Department of Transport of the arrest.