He has also been a member of the Seattle Seahawks, Los Angeles Chargers, and Houston Texans of the NFL, and the New Jersey Generals of the United States Football League (USFL).

[6] In February 2011, Luani played for the Faga'itua Vikings in the inaugural ASHSAA Boys' Futsal tournament, held at Samoana High School.

Luani's brother Roy was also playing for the Vikings and Shalom assisted his sibling for the game's opening goal before scoring a free kick himself.

The American Samoa Football Federation suggested that the brothers were the difference between the two teams, saying: "Shalom Luani was everywhere, whether it be defending or assisting on goals while his older sibling's tenacity, nose for the ball and no fear play were huge keys in winning the first ever Futsal championship in ASHSAA history".

Shalom scored to help his side to a 3–2 win and the Championship title, although the forward was injured and taken to hospital following a collision with Samoana's Palauni Taposua.

With the score at 1–1, goalscorer Ryan Petaia was fouled by goalkeeper Benjamin Wilbert, resulting in a penalty that Luani took, but his effort stuck the crossbar.

[15] Two days later, Luani opened the scoring for American Samoa in another Olympic qualifier against the Solomon Islands on March 20, 2012.

[16] Following his performances for the under-20 side, Luani was called up to the American Samoa senior team for the 2011 Pacific Games by coach Iofi Lalogafuafua.

[17] Luani's under-20 teammates Suani Uelese, Frederick Charles Uhrle, Ismael D'Angelo Herrera, Moe Kuresa and Daru Taumua were also called up the squad.

[18] Luani made his debut for the senior side in their opening fixture of the tournament, in a 4–0 loss to Tuvalu on August 27, 2011.

Luani scored his first international goal by chipping Tonga goalkeeper Kaneti Falela in the second half to give American Samoa a 2–0 lead.

He gave American Samoa the lead in the first half after dispossessing Cook Islands defender Nathan Tisam and beating goalkeeper Tony Jamieson.

This goal, Luani's second in international football, made him American Samoa's joint–top scorer of all time, tied with Ramin Ott.

[27] Competent in both association and American football, Luani has stated "I am keen to keep playing both at the moment because I am not sure which one will be my best option for the future.

"[28] At the age of 15, in September 2009, Luani was named the Junior Varsity division's MVP, being selected by the coaches of other teams.

Faga'itua's head coach, Tuiaua Pio Grohse, suggested that Luani had been the difference between the two sides in the final, saying "They had a very good team, and we had a hard time scoring against them until a minute and a half left in the game, when Shalom Luani crossed the try line and added a score for our team".

American Samoa eventually won 34–28 after double overtime, with Luani scoring the final touchdown to seal his country's victory.

[31] In February 2012, Luani was included in an American Samoa All Star Team for an under-19 Junior Oceania Bowl championship match against Australia.

[41] Chabot suffered a poor start to the campaign, losing their first four games, but in October the side embarked on a six-game win streak that saw them undefeated until mid-November.

[55] In the 2017 season opener against the Tennessee Titans, Luani successfully recovered a surprise onside kick to begin the game.

Of Luani's personality, his coach at San Francisco, George Rush said in 2014: "He's quiet, kind of shy, very polite, very respectful.