[2] Following the season, Frangipani ultimately relocated to the Young Goose Academy in Egna, Italy, to train under Lorenzo Magri.

He went on to win gold at the 2018 Mentor Toruń Cup, before placing fourth at the 2018 Coupe du Printemps and 2018 Egna Spring Trophy.

Making his debut on the senior international level, Frangipani won silver at the 2019 Mentor Toruń Cup and finished fourth at the 2019 Dragon Trophy.

Selected to compete at the 2019 World Junior Championships in Zagreb, Croatia, Frangipani finished the event in twenty-third place.

[2] Prior to the season, Frangipani began working with Giorgia Carrossa and Eva Martinek as coaches.

Debuting on the Grand Prix series, Frangipani finished eleventh at the 2021 Gran Premio d'Italia and twelfth at the 2021 Internationaux de France.

[2] Frangipani began the season by unexpectedly taking gold at the 2022 Nepela Memorial, scoring personal bests in all segments of the competition.

He then competed at the 2022 Budapest Trophy, where he earned a new personal best in the free skate segment of the competition and finished fourth.

[2] Beginning the season at the 2023 Nepela Memorial, Frangipani won the gold medal there for the second consecutive year, after finishing sixth in the short program and rising to first place with a new personal best free skate score.

"[7] Frangipani concluded the season making his World Championship debut at the 2024 edition in Montreal, coming sixteenth.

Going on to compete on the 2024–25 Grand Prix circuit, he finished sixth at 2024 Skate Canada International and tenth at the 2024 NHK Trophy.