Willem Jan is an international tax lawyer with over 25 years of experience advising companies, entrepreneurs, and private clients on cross-border structuring, wealth management, and estate planning across Asia and beyond. He is the Founding Partner of HKWJ Tax Law & Partners, Triple Eight, and iBlynq, firms with a presence in Hong Kong, Singapore, the UK, the Netherlands, and Curaçao, serving clients from multinationals to start-ups.

He also consults at Haldanes on complex tax, trust, and compliance matters. His advisory expertise spans tax planning, company incorporation, trusts and foundations, transfer pricing, and regulatory disputes. Beyond law, Willem Jan engages in community and cultural initiatives, including running Dutch Shop Hong Kong, and is active in professional associations such as the International Fiscal Association and the Taxation Institute of Hong Kong.

He holds advanced law degrees from universities in the Netherlands, the UK, Canada, and Hong Kong, and is a qualified solicitor in Hong Kong.

With over 20 years of experience in audit, accounting, and taxation, she brings extensive expertise and a practical approach to financial and tax matters. Her academic background spans institutions in the United States and Singapore, and she is a member of the Singapore Chartered Tax Professionals (SCTP).

Shermaine is a Business Development Executive, where she drives client acquisition and relationship management across the group's portfolio of specialise services, including HKWJ Tax Consultants, Triple Eight Corporate Services, iBlynq and DutchShop SG. She specialises in Public Relations for her degree and her career since graduation has spanned Talent Acquisition and Sales, with 7 years of hands-on experience across both B2C and B2C. That grounding in consultation, relationship-first selling has carried directly in her work today.

Identify and develops new business opportunities across the group's various services lines, tailoring her approach to the distinct needs of each entity. She actively networks and attends industry events to meet potential clients, building a steady pipeline of new business leads and expanding the group's presence across different client circles. From first conversation through closing she manages the clients relationship with a consultative, needs-first approach, taking the time to understand what each client is looking for before proposing a solution.

Her Public Relations background plays a quiet but vital role in how she works whereby she comminicates the group's services clearly to clients who may be new to corporate compliance and tax matters, helping first-time clients feel confident and informed from the start. Beyond individual client interaction, Shermaine also works closely with internal team to align business development efforts with each entity's goals, and contributes market and client insights that support the group's broader growth strategy.

With over 10 years of experience, he has served as a company representative responsible for ensuring that the company and its operations remain compliant with Singapore's applicable laws, regulations, and statutory requirements. His responsibilities cover a broad range of corporate governance, compliance, and administrative matters. His key duties include: