Contributors

Derren Joseph and James Kallman

Derren is an Enrolled Agent who is admitted to practice before the IRS; and is an associate member of the American Institute of CPAs. He manages the U.S. Tax Desk of a regional Accounting Network with over 25 offices in 10 Asian countries. Derren holds 2 Masters degrees in Economics and a Certified Diploma from ACCA. A 30-year veteran of emerging markets, James S. Kallman is the Senior Partner of global accounting and consulting firm, Moores Rowland Indonesia. James is regularly quoted in local and international media.
 

Derrick Chang

Derrick is Acting CEO at PSB Academy. He started his career in the civil service, focusing on manpower-related policies and research. Derrick was part of a core team that was tasked by the Ministry of Manpower to form the Singapore Workforce Development Agency. At PSB Academy, he worked with the Senior Management on acquisition, divestment, partnership, and corporate learning opportunities. Derrick took on the role of Chief Operating Officer at PSB Academy in April 2013.

Derrick Tan

Derrick Tan is a seasoned banker with over 25 years of experience in the wealth management industry. He currently serves as the Group Executive Chairman of WRISE, where he oversees the Group's operations across various locations: Singapore, Hong Kong, Dubai, Shenzhen and Tokyo. 

Under his strategic leadership, WRISE has garnered numerous industry accolades, including recognition for the “Most Innovative Wealth Management Model” and excellence in “Family Office Solutions.” 

Renowned for his market foresight and forward-thinking approach, Derrick continues to drive innovation to keep WRISE ahead in an increasingly competitive landscape.

Desmond Loh

Desmond Loh is the Principal of Brandtative, a Singapore based brand identity studio that blends strategy and creativity to craft passionate brands.

Desmond Sheehy

Desmond Sheehy is the co-founder and chief investment officer of Duxton Asset Management. Prior to joining Duxton, Sheehy was head of complex asset investments at DeAM Asia. He also spent time as a senior investment officer with the International Finance Corporation. Sheehy holds an MBA from INSEAD and a BE from UCC in Ireland. He is a frequent contributor and speaker at the Global AgInvesting conference series.

Dewi Sriwahyuto

A Singapore-based writer, copywriter, and former journalist for both print and online, Dewi is the digital media storyteller of Futurebooks.

Dhawal Shah

Dhawal Shah is the co-founder and driving force behind 2Stallions Digital Marketing Agency, a full-service digital marketing agency established in 2012. With over a decade of success, Shah is passionate about helping businesses achieve tangible growth through strategic, AI-enabled, data-driven marketing solutions.

With expertise in lead generation, brand awareness, and virtual selling, Shah leads a team committed to delivering real impact for its clients across Singapore, Malaysia, APAC and beyond. From startups to SMEs and multinational brands, the company has turned bold strategies into measurable success.

Dhruv Sahgal

Dhruv spent most of his childhood in Singapore and went on to Northeastern University to graduate with a degree in Electrical Engineering and Business. During his undergraduate stint, Dhruv worked for Merrill Lynch in Hong Kong and Scotia Bank in New York. Moving back to Singapore to work one year with The Royal Bank of Scotland, Dhruv’s big ambitions, inclination for tech, and restlessness led him to join the world of tech-startups. He is a problem solver who likes to use technology to create a more efficient world.

Diarmid Massey

Diarmid Massey is the Managing Director of Global Wholesale & Carrier at Cable&Wireless Worldwide.

Diego Guti�rrez Zald�var

Diego Gutiérrez Zaldívar is the CEO of RIF Labs.

A pioneer of web development in Argentina and Latin America since 1995, Diego was also one of the first persons to foster and develop Bitcoin and blockchain technology in Latin America. In addition to RIF Labs and RSK Labs, he also co-founded Koibanx, a blockchain company that is aiming to transform the potential of Bitcoin and blockchain technologies into real use cases, which serve as a driver for social and economic change.

Diego is also co-founder of Bitcoin Argentina with over 5,000 registered members on the meetups and 30,000 members on its online community and the first Bitcoin Centre in Latam. He is also president and co-founder of the Latam Bitcoin NGOs, where he helped create a network of Bitcoin communities with presence in 9 countries of the region.