Huracán Born in
Ciudadela, Kaku began his career in the youth ranks of
Huracán. In 2013, Kaku made his professional debut for
Huracán in the
Primera B Nacional. He scored his first goal for the club on 12 October 2013 in a 4–1 victory over
Aldosivi. On 14 December 2014, Kaku helped Huracán return to the top flight after three seasons in the Primera B Nacional, scoring the decisive second goal in a 4–1 victory over
Atlético Tucumán. With the promotion to the top flight, Huracán concluded a very successful season, having won the
2013–14 Copa Argentina a few weeks prior in a penalty shoot-out over
Rosario Central with Kaku appearing as a second-half substitute. This was the club's first official title in 41 years. On 3 February 2015, he scored his first goal in the
Copa Libertadores against Peruvian club
Alianza Lima in a 4–0 victory. On 1 March 2016, Kaku led Huracán to a historic victory in the
Copa Libertadores over
Peñarol at the
Estadio Centenario, scoring the lone goal in the 1–0 triumph. A few weeks later, on 24 March Kaku scored his first goal in the
Argentine Primera División in a 2–0 victory over
Aldosivi. On 18 July 2016 he helped Huracán advance in the
Copa Argentina scoring the opening goal in a 2–1 victory over
Central Córdoba. On 27 May 2017, he scored an injury time equalizer from the penalty spot in a 1–1 draw with
Boca Juniors. On 1 June 2017, Kaku scored another important goal for his club, this time an injury time goal in a 4–0 victory over
Deportivo Anzoátegui in the
2017 Copa Sudamericana. The goal helped Huracán advance to the next round by a 4–3 aggregate score after having lost the first leg by three goals. On 16 June 2017, he scored the lone goal in a 1–0 victory over
Unión de Santa Fe, helping his club to a crucial three points which helped Huracán avoid relegation. On 28 October 2017, Kaku scored his club's second goal in a 4–0 victory over
Lanús and celebrated the goal dedicating it to his recently deceased mother.
New York Red Bulls On 23 December 2017, it was announced by Huracán that they had agreed a deal to transfer Kaku to
New York Red Bulls of
Major League Soccer for a fee of $6.25 million. After resolving various issues that held up the transfer, on 16 February 2018, it was announced that he had signed with New York. Red Bulls also sent $50,000 of General Allocation Money to
Atlanta United, who owned his discovery rights. On 1 March 2018, Kaku made his debut for New York in a 2–0 victory over
Olimpia in the
CONCACAF Champions League. On 10 March 2018, he assisted
Ben Mines on the opening goal of the match on his Red Bulls league debut in a 4–0 victory over
Portland Timbers. On 13 March 2018, Kaku scored his first goal for New York in a 3–1 victory over
Club Tijuana in the
CONCACAF Champions League, helping the club advance to semifinals of the Champions League for the first time. On 14 April 2018, Kaku scored his first league goal for New York in a 3–1 victory over the
Montreal Impact. On 28 April 2018, Kaku helped New York to a 3–2 victory over
LA Galaxy, assisting on two goals and scoring the game winner with an 84th-minute penalty-kick goal. The following week, 5 May 2018, Kaku opened the scoring for New York in a 4–0 derby victory over
New York City, he also assisted on two other goals. On 6 December 2018, Kaku was named the New York Red Bulls Newcomer of the Year for 2018 after leading the team in assists throughout the season.
Al-Taawoun On 1 February 2021, it was announced by
Al-Taawoun of the
Saudi Professional League that they had agreed to a transfer for Kaku. On 17 February 2021, Romero Gamarra's former club New York Red Bulls and Major League Soccer sought arbitration against Kaku and the
MLS Players Association for breach of contract. In April 2021 arbiter Shyam Das ruled against the MLSPA and Kaku and found that New York Red Bulls and Major League Soccer had exercised their unilateral contract option on Kaku prior to 31 December 2020. On 12 May 2021, Major League Soccer and New York Red Bulls filed a petition in United States federal court seeking to have the arbitration decision enforced. On 22 July 2021, MLS and New York Red Bulls filed suit in United States federal court against Kaku's agent Scott Pearson and Pearson's company Argentine Futbol Tours LLC, alleging "
tortious interference" in Kaku's move to Al-Taawoun and seeking in excess of $6 million in damages. On 16 September 2021, MLS and New York Red Bulls voluntarily dismissed their suit against Pearson. ==International career==