a team leader. at first she is a "lead hand" (work cell coordinator). basically the title involves both technical aspects and management.
langunage proficiency is a must. strong managemen ability =planning + implementing + controlling + interacting + coordinating.
dealing with people is even more important than with tech or machine. other "know-how": meeting with upper leaders, documentation, everyday work report (brief emails), ...
like i said, it is a nice job, but I may think the language ability that has been verified in previous position is the most significant (if you, or i, think your English is good, it will likely not count, coz your upper leader is the real boss).