William Aston Yohannes

External Auditor
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Employment History

PT Gudang Garam Tbk

2016 - 2016

Internal Auditor

• Conducting the inspections for administrative and operational aspects are in accordance with the standard operating procedure. • Conducting special inspection according to the instructions and inspection standards. • Make the Inspection Report that brief, concise, clear, accurate and timely. • Actively perform other tasks in the sense of need in order to achieve the target of audit.

Grant Thornton Indonesia

2014 - now

External Auditor

• Perform audit procedures on several areas (accounts) according to Grant Thornton Audit Guide, such as Cash & Cash Equivalent, Account Receivable, Prepayment, Fixed Assets, Accounts Payable, Equity, Operating Expense, and Non Operating Expense to check their acurracy and reliabiity. • Report the task given by the audit manager is performed properly and timely • Get understanding on the business of the clients for the early audit preparation. • Inquire the clients related to their internal control and assess whether the control is adequate and properly performed • Prepare financial report according to PSAK • Being an in-charge of audit team to coordinate and ensure that the audit fieldwork meet deadline Clients: • PT Toyota Tsusho Logistic Center (Services) • PT Menjangan Sakti (Food Trading Industry) • PT Dein Prima Generator (Manufacture Industry) • PT Futami (Food & Beverage Manufacture) • PT Bhakti Wasantara Net (Services) • PT Fukoku Tokai Rubber Indonesia (Automotive Manufacture) • PT Ultratech Cement Indonesia (Cement Industry) • PT Unza Vitalis (Cosmetics Manufacture) • PT Ipsos Indonesia (Researchers, Services)

Education History

Atmajaya Jakarta

2010 - 2015


Having such tremendous subjects related to accounting major from basic to advanced. Beyond that, having another courses that also prop up my capability and skill towards the employability in the workplaces.