Alstom is seeking a Senior TCMS Software Developer for a remote-friendly, full time role in Canada. You will lead software design, diagnose complex onboard systems, and mentor engineers across the lifecycle of Train Control and Management Systems. You bring 10+ years in embedded/RTOS environments, strong C/C++/Python skills, and fluency in French and English. The role covers development, testing, and continuous improvement in a collaborative, international setting.