Shiroh Ambersley, 20, is due to appear at the Old Bailey on Friday after he was remanded in custody at Willesden Magistrates’ Court on Wednesday.
Ambersley, from Wembley, north-west London, is the second man to be charged with murdering 22-year-old Mr Badzak in Kilburn on February 6.
He is also charged with the attempted murder of the victim’s 16-year-old friend.
They were chased at around 5.30pm, became separated and Mr Badzak was repeatedly stabbed after falling to the ground.
The 16-year-old also suffered multiple stab injuries but managed to escape into a shop in Willesden Lane and is now said to be recovering.
Mr Badzak, from Maida Hill, west London was privately educated at Wetherby and Portland Place schools before attending Roehampton University.
Rashid Gedel, 20, from Ilford in east London, is also charged with murdering Mr Badzak and is next due to appear at the Old Bailey on June 1.