| Personal information | |||
|---|---|---|---|
| Full name | Roberto Manuel Sierra Giménez | ||
| Date of birth | 21 May 1996 | ||
| Place of birth | Novetlè, Spain | ||
| Height | 1.81 m (5 ft 11 in) | ||
| Position | Midfielder | ||
| Team information | |||
Current team | Argeş Piteşti | ||
| Number | 27 | ||
| Youth career | |||
| –2016 | Levante | ||
| 2016 | → Mallorca (loan) | ||
| Senior career* | |||
| Years | Team | Apps | (Gls) |
| 2016 | Levante B | 0 | (0) |
| 2016 | → Mallorca B (loan) | 3 | (0) |
| 2016–2018 | Ontinyent | 63 | (1) |
| 2018–2019 | Peralada | 35 | (0) |
| 2019–2021 | Oviedo B | 47 | (2) |
| 2021–2022 | Formentera | 32 | (0) |
| 2022 | Inter Turku | 14 | (0) |
| 2023 | Spartak Varna | 17 | (0) |
| 2023–2025 | CSA Steaua București | 53 | (3) |
| 2025– | Argeş Piteşti | 46 | (3) |
| * Club domestic league appearances and goals as of 24 August 2026 | |||
Roberto Manuel Sierra Giménez (born 21 May 1996) known as Rober Sierra, is a Spanish professional footballer who plays as a midfielder for Liga I club Argeş Piteşti.
Rober started his youth career with Levante. In 2015 he was promoted to Atlético Levante, but in January 2016 he was sent on loan to Mallorca B until the end of the season. In the summer of 2016 he returned in Levente, but later decided to leave the team and join Ontinyent in Segunda División B. After spending two seasons with the team he was transferred in Peralada for a season, before joining Real Oviedo II. In the summer of 2021 he moved to Formentera.
On 20 June 2022, he moved to Finland and joined Veikkausliiga club Inter Turku on a 1+1 year contract.
In January 2023 Rober signed with the Bulgarian First League team Spartak Varna.
| Club | Season | League | National cup | Other | Total | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Division | Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | ||
| Mallorca B | 2015–16 | Tercera División | 3 | 0 | — | — | 3 | 0 | ||
| Ontinyent | 2016–17 | Tercera División | 38 | 0 | — | 6 | 0 | 44 | 0 | |
| 2017–18 | Segunda División B | 25 | 1 | — | 14 | 0 | 39 | 1 | ||
| Total | 63 | 1 | — | 20 | 0 | 83 | 1 | |||
| Peralada | 2018–19 | Segunda División B | 35 | 0 | — | 1 | 0 | 36 | 0 | |
| Oviedo B | 2019–20 | Segunda División B | 22 | 2 | — | — | 22 | 2 | ||
| 2020–21 | Segunda División B | 25 | 0 | — | — | 25 | 0 | |||
| Total | 47 | 2 | — | — | 47 | 2 | ||||
| Formentera | 2021–22 | Segunda Federación | 32 | 0 | — | — | 32 | 0 | ||
| Inter Turku | 2022 | Veikkausliiga | 14 | 0 | 2 | 0 | — | 16 | 0 | |
| Spartak Varna | 2022–23 | Bulgarian First League | 17 | 0 | 1 | 0 | — | 18 | 0 | |
| CSA Steaua București | 2023–24 | Liga II | 24 | 2 | 4 | 0 | — | 28 | 2 | |
| 2024–25 | Liga II | 29 | 1 | 0 | 0 | — | 29 | 1 | ||
| Total | 53 | 3 | 4 | 0 | — | 57 | 3 | |||
| Argeş Piteşti | 2025–26 | Liga I | 40 | 3 | 4 | 0 | — | 44 | 3 | |
| 2026–27 | Liga I | 6 | 0 | 0 | 0 | — | 6 | 0 | ||
| Total | 46 | 3 | 4 | 0 | — | 50 | 3 | |||
| Career total | 310 | 9 | 11 | 0 | 21 | 0 | 342 | 9 | ||
Ontinyent
Inter Turku