Additionally, Toby Jones, Maximiliano Hernandez, and Garry Shandling reprise their roles from previous MCU films as Arnim Zola, Jasper Sitwell, and Senator Stern, respectively. Georges St-Pierre plays Georges Batroc, a mercenary and a master of the French form of kickboxing known as savate. Callan Mulvey plays Jack Rollins, a member of S.H.I.E.L.D.'s S.T.R.I.K.E. unit. Chin Han, Jenny Agutter (who previously appeared in The Avengers), Alan Dale, and Bernard White appear as members of the World Security Council. Comedic actors Danny Pudi and DC Pierson have small roles as a S.H.I.E.L.D. technician and an Apple Store employee, respectively. Gary Sinise narrates a Captain America-themed Smithsonian Institution exhibit, and Stan Lee cameos as a security guard there. Winter Soldier creator Ed Brubaker makes a cameo as a scientist working on the Winter Soldier. Co-director Joe Russo cameos as a doctor, and Christopher Markus and Stephen McFeely cameo as two S.H.I.E.L.D. interrogators. Thomas Kretschmann, Henry Goodman, Elizabeth Olsen and Aaron Taylor-Johnson appear, uncredited, as Baron Wolfgang von Strucker, Dr. List, the Scarlet Witch, and Quicksilver, respectively, in the mid-credits scene.

Can we conclude that was one of the russo brothers in winter soldier?
yes