Familiarity with international safety standards and European conformity requirements (CENELEC standards), Safety Integrity Levels (SIL), Knowledge of relevant software tools or technology used in validation processes, Auditing inspections or reviews, ERTMS ETCS Kavach TCAS technology, Railway signaling, System and Software Validation, Software testing verification or validation, EN 50129, EN 50128, EN 50126, Validation approaches and methodologies