Early career In 2022, Koleilat played for the
Seacoast United Phantoms in
USL League Two. At the
2023 MLS SuperDraft, he was selected in the second round (58th overall) by
Los Angeles FC. For the 2023 season, he signed with the club's
MLS Next Pro affiliate,
Los Angeles FC 2.
Forge FC In February 2024, Koleilat joined
Canadian Premier League club
Forge FC on a short-term deal ahead of their
CONCACAF Champions Cup matches. He had previously trained with the club before his senior year in college in 2022. In March 2024, Koleilat signed a multi-year deal with Forge. He made his club debut on 11 May 2024, recording a clean sheet in a 0–0 league draw against
Pacific FC. Throughout the season he formed a two-goalkeeper tandem with
Christopher Kalongo, sharing starting duties. He helped Forge win the 2024 CPL Shield as regular-season champions, the first trophy of his professional career. After the season, the club exercised his option for 2025. At the end of the 2025 season, Koleilat won the Canadian Premier League Golden Glove award as the league's top goalkeeper.
Birmingham Legion FC In February 2026, Koleilat signed with
USL Championship club
Birmingham Legion FC. ==Personal life==