During their work on the Z3Prover/z3 repository, Wael focused on enhancing the z3++ C++ API by implementing Bitvector signed division (sdiv) support. They integrated the sdiv operator directly into the z3++.h header, providing inline operator overloads to handle both expr and int operands. This addition brought the C++ API in line with Python bindings and SMT-LIB semantics, addressing a gap in signed bit-vector arithmetic support. By reducing the need for user workarounds, Wael improved the modeling experience for developers working with bitvectors. Their work demonstrated solid API development skills and a strong command of C++ language features.