Citadel Securities has hired Herb Sutter, a 20-year Microsoft veteran, as its first technical fellow.Sutter specializes in C++, the primary coding language used by Citadel Securities.In his new role, Sutter will lead C++ training initiatives to make the language more accessible and improve software development and issue resolution.C++ is crucial for Citadel Securities' technology and its expansion plans, as it offers greater control and efficiency in designing systems.