Firmino made his Liverpool debut in a pre-season friendly away to Swindon Town on 2 August, and his league debut a week later, replacing Jordon Ibe for the final 12 minutes of a 1–0 win at Stoke City.
On 21 November, Firmino scored his first goal for Liverpool in a 4–1 victory over Manchester City at the City of Manchester Stadium.
In January 2016, Firmino was described by Paul Little of the Irish Examiner as steadily improving during his first season in England, although an inability to combine with centre forward Christian Benteke drew criticism.

However, in 2016, Firmino's form improved as manager Jürgen Klopp played him alone up front in a false 9 role.
 He scored braces against Arsenal and Norwich City that month; the latter performance, in which he also assisted in a 5–4 win, earned comparisons to Raheem Sterling.
With his form improved, Firmino was voted to be Liverpool's Player of the Month in January.
Firmino ended the season as Liverpool's league top scorer with ten goals.
Firmino made his Liverpool debut in a pre-season friendly away to Swindon Town on 2 August, and his league debut a week later, replacing Jordon Ibe for the final 12 minutes of a 1–0 win at Stoke City. On 21 November, Firmino scored his first goal for Liverpool in a 4–1 victory over Manchester City at the City of Manchester Stadium. In January 2016, Firmino was described by Paul Little of the Irish Examiner as steadily improving during his first season in England, although an inability to combine with centre forward Christian Benteke drew criticism.
However, in 2016, Firmino's form improved as manager Jürgen Klopp played him alone up front in a false 9 role.  He scored braces against Arsenal and Norwich City that month; the latter performance, in which he also assisted in a 5–4 win, earned comparisons to Raheem Sterling. With his form improved, Firmino was voted to be Liverpool's Player of the Month in January. Firmino ended the season as Liverpool's league top scorer with ten goals.
Roberto Firmino