Valentina Siregar Siregar has been serving as a Chief Security Officer (CSO) at PT.CMAJ since October 2016, while simultaneously working as a cleaning service professional at LIPPO Mall Indonesia since the same period. Valentina Siregar Siregar completed a degree at STMIK Trigunadharma Medan from 2016 to 2020, enhancing both security management and operational service skills.
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