He currently plays for Excelsior Virton, wearing the number 25 shirt. He plays primarily as a Midfield. His preferred foot is Right. His current market value is estimated at 150K €.

His most recent move was a from FC Milsami to Excelsior Virton on 2026-07-07.

Across 27 appearances in the Belgian Challenger Pro League 2024-2025, William Simba registered 1 goals and 0 assists, while completing 7 key passes out of 227 total passes with a passing accuracy of 5.7.