Early career Stoica started his career in 2009 in the academy of
Petrolul Ploiești, the same year his father
Pompiliu signed a professional contract with the club. He left Petrolul in 2016 when it folded, and then had a six-month spell with
SC Freiburg in Germany before returning to his country with
FCSB, also a former club of his father.
FCSB Stoica made his senior debut for FCSB on 25 October 2017, aged 14, in a 6–1 away rout of
Sănătatea Cluj in the
Cupa României. He became the youngest player to feature in a competitive match for the club, and also scored his first goal in the process.
2019–2021: Various loans In the winter
transfer window of 2019, Stoica agreed to a loan with
Dunărea Călărași for the remainder of the
season, and on 17 February made his
Liga I debut in a goalless draw with
Voluntari. Stoica spent the following campaigns on loan in the
second tier with his former youth team Petrolul Ploiești,
Metaloglobus București, and
CSM Slatina, respectively. He had his most fruitful stint with the latter, scoring seven times from 24 games in spite of the club's relegation at the end of the
2020–21 season.
2021–2023: Return to FCSB On 1 August 2021, Stoica came off the bench for FCSB to
equalise late in a 1–1 league draw at
UTA Arad. On the 29th that month, he scored the only goal of the
Roș-albaștrii in a 1–4 away loss to four-time defending champions
CFR Cluj. Following his first team breakthrough, owner
George Becali announced that he rejected a €7.5 million bid for Stoica from
Premier League club
Arsenal, although the veridicity of his claims was questioned. On 15 December 2021, Stoica came off the bench at half-time, obtained a
penalty in
extra time and netted a goal for himself in a 3–1
derby defeat of
Rapid București. On 30 January 2022, he scored again in another
Bucharest derby by coming off the bench in a 3–0 win over
Dinamo București.
2023–2024: Loan to Universitatea Cluj After failing to score any goals during the first half of the
2022–23 season, Stoica was sent out on a six-month loan to
Universitatea Cluj on 17 December 2022. His loan was extended for
another year, but he left the club prematurely on 2 February 2024, after receiving an offer from Israeli team
Hapoel Be'er Sheva and refusing to train.
Hermannstadt On 7 February 2024, after his move to Hapoel Be'er Sheva fell through, Stoica joined fellow Liga I club
Hermannstadt for a €500,000 transfer fee, payable within one year. He signed a three-and-a-half-year contract and was assigned the
number 7 shirt. Stoica made his debut on 11 February 2024, in a goalless league draw with his former youth side Petrolul Ploiești, and totalled five goals from 15 Liga I appearances by the end of the
season. On 14 February 2025, he delivered a standout performance by scoring his first professional
hat-trick within 21 minutes after coming on at
half-time, leading his team to a 3–2 away win over
Sepsi OSK. Over the course of the
2024–25 campaign, he made 44 appearances across all competitions, scoring 15 goals and providing five assists. He also played a role in Hermannstadt's run to the
final of the Cupa României, where they finished as runners-up after a 2–3 loss to CFR Cluj.
Estrela Amadora On 28 July 2025, Stoica completed a €1.3 million transfer to Portuguese side
Estrela Amadora, signing a three-year contract and being handed the number 10 jersey. Hermannstadt also retained 20% interest on a possible future sale. Stoica made his competitive debut on 11 August 2025, scoring just one minute after coming on as a substitute to secure a 1–1 draw against
Estoril in the opening match of the
Primeira Liga season. ==International career==