Job description. Hide. JOB STATEMENT. Rosenblum Cellars, located on the beautiful waterfront at Jack London Square in Oakland, is seeking a part time Busser “Bar Back” to join our team. We are a fun, energetic “family,” sharing wonderful wines with many new and existing customers. Rosenblum Cellars, founded nearly 40 years ago by Kent Rosenblum, known as the “King of Zinfandel”, is an iconic winery with a loyal following. Essential Duties. Abilit...