Álvarez's senior career started with Chacarita Juniors, then of Primera B Nacional. He played twenty-seven times in 2016–17, including his debut on 27 August 2016 in a 1–1 draw versus Instituto. 2016–17 ended with promotion to the Argentine Primera División. He signed a new contract with Chacarita in September 2017. Álvarez's top-flight debut came against Independiente on 15 October, while two weeks later he scored his first professional goal in a 2–1 defeat to Newell's Old Boys.
