Viska has extensive experience in sophisticated capital markets and public M&A transactions, particularly in the financial services sector and often with multi-jurisdictional elements. She has a close working relationship with Indonesia's Financial Services Authority (Otoritas Jasa Keuangan/OJK), including officials responsible for banking, non-bank financial services, and capital market regulations. 

Viska is actively involved in the Indonesian Association of Legal Consultants in the Financial Sector (Himpunan Konsultan Hukum Sektor Keuangan, previously Himpunan Konsultan Hukum Pasar Modal). 

She has advised:

• Amman Mineral Internasional on its US$715 million IPO and listing on the IDX, making it Indonesia’s largest IPO in 2023 (as of July 2023) and one of the largest in IDX history by issuance value (IPO Deal of the Year, Asian Legal Business Indonesia Law Awards 2023; Best IPO Southeast Asia, FinanceAsia Achievement Awards 2023)
• Kookmin Bank on an IDR12 trillion (US$800 million) rights issue of PT Bank KB Bukopin Tbk
• Credit Suisse, CLSA Sekuritas and Mandiri Sekuritas on the 2023 IPO (and Rule 144A/Regulation S global offering) of Pertamina Geothermal Energy, a leading geothermal company 
• Credit Suisse, Morgan Stanley, BCA Sekuritas and BRI Sekuritas in relation to the IPO (and Regulation S global offering) of Global Digital Niaga (Blibli), a leading e-commerce company
• Indo Premier Sekuritas, Trimegah Sekuritas Indonesia Tbk, UBS Sekuritas Indonesia, UBS AG Singapore Branch, Macquarie Capital Limited and Macquarie Sekuritas Indonesia on the US$600 million IPO of PT Merdeka Battery Materials
• Petrindo Jaya Kreasi on its IDR372 billion IPO
• CICC, Merrill Lynch, Morgan Stanley as joint sponsors in the IPO of J&T Express