Early career and Chennai City Born in
Eraviputhenthurai,
Tamil Nadu, Soosairaj first moved to
Chennai when he attended
Madras Christian College. At the age of 10, he started training with his local football club/academy St. Catherine, one of the oldest football clubs in the state. He represented the college in Inter-University tournaments before joining Arrows Football Club of the CFA Senior Division. In December 2016, Chennai City FC were announced as a direct-entry side into the
I-League, India's top-tier football league. He made his professional debut for the club on 4 December 2017 in Chennai City's second match of the
2017–18 season against
Gokulam Kerala. Pandiyan started and played the whole match as Chennai City drew 1–1. On 17 January 2017, Soosairaj made his professional debut in the
I-League for Chennai City against
DSK Shivajians. He came on as a 61st-minute substitute for
Malsawmfela despite Chennai City losing 2–0. On 8 April 2018, Soosairaj scored his first professional goal in the league against
Minerva Punjab. His 41st-minute goal was the first in a 2–0 victory. He then scored his second goal of the season a few weeks later on 22 April against
Churchill Brothers. This time, Soosairaj scored Chennai City's only goal in the 54th minute as they lost 5–1. The next season, Soosairaj scored his first brace, scoring twice against Churchill Brothers on 17 February 2018. His two goals contributed to a 3–1 victory for Chennai City. He then scored his third goal of the season a couple weeks later on 2 March against Minerva Punjab. His 5th-minute goal was the first in a 2–1 victory for Chennai City. After the
2017–18 season, Soosairaj was named the league's best midfielder by the
All India Football Federation.
Jamshedpur On 9 March 2018, it was announced that Soosairaj had signed for
Jamshedpur of the
Indian Super League. He scored 4 goals in 14 matches during the 2018–19 season. He was brilliant throughout the season playing as a left or right winger . He earned a lot of admiration for his performance. He was one of the standout Indian players of the season, and his performances led to him gaining his first international call-up.
ATK Before the start of the 2019–20 season,
Indian Super League side
ATK activated the release clause of Michael Soosairaj as Soosairaj scored against Mumbai City FC this season, assisting ATK in a 2–0 win.
Mohun Bagan After the merger of
ATK and
Mohun Bagan, Soosairaj joined
Mohun Bagan, and was included in twenty-two men squad by manager
Antonio Lopez Habas for the team's
2021 AFC Cup inter-zonal semifinal match against Uzbek side
Nasaf.
Odisha On 28 May 2022, the
Juggernauts secured the signature of Soosairaj, on a two-year deal. ==Personal life==