D-League (2009–2010) After going undrafted in the
2009 NBA draft, Aminu joined the
Washington Wizards for the
2009 NBA Summer League. On November 5, 2009, Aminu was selected with the 10th overall pick in the
2009 NBA D-League by the
Fort Wayne Mad Ants. However, he was subsequently acquired by the
Erie BayHawks in a trade. On February 13, 2010, Aminu participated in the
2010 D-League All-Star Game. On March 2, 2010, The BayHawks sent Aminu in a trade to the
Bakersfield Jam. In 9 games played for the Jam, he averaged 19.3 points and 9.2 rebounds per game. On March 26, 2010, Aminu signed a 10-day contract with the
Miami Heat. However, Aminu was later waived by the Heat on April 7.
Élan Chalon (2010–2012) In July 2010, Aminu joined the
Charlotte Bobcats and the
Atlanta Hawks for the
2010 NBA Summer League. On July 9, 2010, Aminu signed with the French team
Élan Chalon for the 2010–11 season. On May 21, 2011, Aminu recorded a career-high 27 points, shooting 13-of-14 from the field, along with six rebounds in an 85–107 blowout loss to
ASVEL Basket. Aminu won the
2011 French Cup with Chalon. On June 13, 2011, Aminu signed a one-year contract extension with Chalon. In his second season with the team, Aminu won the a treble – the
2012 French Leaders Cup, the
2012 French Cup and the
2012 French League Championship titles with Chalon. In 54 games played during the 2011–12 season, he averaged 11.9 points, 6.7 rebounds and 1 steals per game.
Pınar Karşıyaka (2012–2013) On August 24, 2012, Aminu signed with the Turkish team
Pınar Karşıyaka for the 2012–13 season. Aminu helped Karşıyaka reach the
2013 FIBA EuroChallenge Finals, where they eventually lost to
Krasnye Krylia.
Enel Brindisi and Banvit (2013–2014) In July 2013, Aminu joined the
Toronto Raptors for the
2013 NBA Summer League. On September 23, 2013, Aminu signed a one-year deal with the Italian team
Enel Brindisi. However, on December 30, 2013, Aminu parted ways with Brindisi. On January 6, 2014, Aminu returned to Turkey for a second stint, joining
Banvit for the rest of the season. Aminu helped Banvit reach the
2014 Turkish League Semifinals, where they were eventually eliminated by
Galatasaray.
TED Ankara (2014–2015) On August 15, 2014, Aminu signed with
TED Ankara for the 2014–15 season. On February 28, 2015, Aminu recorded a season-high 26 points without missing a single shot (12-of-12 from the field), along with eleven rebounds in an 85–97 loss to
Eskişehir.
Hapoel Eilat (2015–2016) On September 11, 2015, Aminu signed a one-year deal with the Israeli team
Hapoel Eilat. On October 26, 2015, Aminu recorded a season-high 25 points, shooting 8-of-13 from the field, along with twelve rebounds, five assists and two steals in an 84–86 loss to
Ironi Nahariya. On March 25, 2016, Aminu participated in the
2016 Israeli All-Star Game and the
Slam Dunk Contest during the same event. In 37 games played for Eilat, Aminu finished the season as the
2016 Israeli League Rebounding Leader with 10 rebounds per game, and third-leading player in efficiency rating (22.6 per game). He also averaged 14.7 points, 1.5 assists and 1.7 blocks per game. Aminu helped Eilat reach the
2016 Israeli League Semifinals, where they eventually lost to
Hapoel Jerusalem.
Al Riyadi (2016–2017) On August 8, 2016, Aminu signed with the Lebanese team
Sporting Al Riyadi Beirut. In 37 games played during the 2016–17 season, he averaged 15 points, 9.3 rebounds, 1.5 assists. 1.3 steals and 1.1 blocks per game. Aminu won the
2017 Lebanese League Championship with Al Riyadi.
Nanterre 92 (2017–2018) On July 28, 2017, Aminu returned to France for a second stint, signing a one-year deal with
Nanterre 92. Aminu helped Nanterre reach the
2018 FIBA Champions League Round of 16, where they were eventually eliminated by his former team
Banvit.
Hapoel Tel Aviv (2018–2019) On July 26, 2018, Aminu signed with the Israeli team
Hapoel Tel Aviv for the 2018–19 season. On November 19, 2018, Aminu recorded a season-highs 21 points and 13 rebounds, shooting 9-of-13 from the field, in an 85–62 win over
Maccabi Rishon LeZion. Aminu helped Hapoel reach the
2019 Israeli League Playoffs, where they eventually were eliminated by
Maccabi Tel Aviv in the Quarterfinals.
Polski Cukier Toruń (2019–2020) On September 10, 2019, he signed with
Polski Cukier Toruń of the
PLK.
Bilbao Basket (2020–2021) On December 16, 2020, Aminu signed a two-month contract with
Bilbao Basket of the
Liga ACB.
Shahrdari Gorgan (2021) On February 8, 2021, Aminu signed with
Shahrdari Gorgan of the
Iranian Basketball Super League (IBSL). In April, he won the
2020–21 IBSL championship.
Atléticos de San Germán / Gigantes de Carolina (2021–2022) On May 27, 2021, Aminu signed with
Atléticos de San Germán of the
Baloncesto Superior Nacional. On May 2, 2022, he parted ways with the team. The next day, he signed with
Gigantes de Carolina. ==Nigerian national team==