Cahaya Jakarta Group
Johanes Sumiardi has over 15 years of experience in the technology and engineering fields, currently serving as a System Administrator at PT Cahaya Jakarta since January 2015, where responsibilities include ensuring optimal performance of computer systems and networks to support company advancement. Prior to this role, Johanes worked as an Engineer at Karmeda Hospital from April 2004 to September 2013. Johanes holds a Bachelor’s degree in Physics from Universitas Gadjah Mada, completed in 2003.
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