A director at Gajah Tunggal with decades of wisdom working in business, Widjaja leads one of the largest integrated tyre manufacturers in South-East Asia. Her credentials speak of a long career working with multi-national companies and prestigious financial institutions, including nine years as country treasurer at HSBC and forex dealer at Deutsche Bank Indonesia.

She has been with Gajah Tunggal in high-ranking positions since 1998, and as a director since 2004. Outside of her day-to-day business, Widjaja has established herself as the Managing Director at Alun Alun Indonesia, a retail brand that promotes Indonesian artisan-made products, under the retail group MAP (Mitra Adiperkasa).

In recognition of her contribution to the business sector, Widjaja was appointed chair of the Indonesian Chamber of Commerce (KADIN) for the UK and Ireland Chapter.