John Russell

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John joined Belasko in January 2021 as a Director in our Luxembourg office and is responsible for central administration operations.

John has over 13 years’ investment fund industry experience in Luxembourg. He previously held the position of Director of Client Services – Private Equity at a leading fund administrator, managing several teams of accountants, corporate lawyers as well as the Investor Services team, providing central administration services to both regulated and unregulated Alternative Investment structures.

In addition to leading operational teams, John also served on the board of a limited number of CSSF regulated vehicles. John previously held the role of supervisor on the alternatives desk of a global bank. John holds a BA (hons) in Public Administration from the University of Limerick, Ireland. John is an avid music fan, and also enjoys mountain biking, cooking, and travelling with his wife and two young daughters.

Thomas Styles

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Tom Styles joined Belasko in 2024 and is a Manager in fund accounting oversight based in our Luxembourg office.

Tom started his career in KPMG Luxembourg where he was an auditor for private equity and real estate funds. Tom then worked for Hines, a global real estate investment manager, where he was a senior fund accountant, working in a team that controlled €5 billion of European commercial real estate. Tom previously worked for Arcmont Asset Management, a leading private debt asset manager as a senior fund controller working on circa. €27 billion of private debt investment.
Tom holds a dual masters in business and finance from Universidad Carlos III de Madrid, Spain and Maastricht University, the Netherlands.

Charles Bettingen

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Charles joined Belasko in July 2023 as Corporate Manager in our Luxembourg office.


Charles has over 11 years’ experience in fund and corporate administration in Luxembourg. This experience includes administration of alternative investment fund administrators, private equity, real estate and debt funds and special purpose vehicles (SPVs).

In addition to managing a corporate administration team, Charles also serves on the board of some of the clients’ funds and SPVs managed by Belasko.

Murielle Nya

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Murielle has over 11 years of experience in the financial services industry and started her career as a French qualified lawyer at reputable law firms in Paris and Luxembourg.

Murielle has also held leadership roles within service provider firms, where she assisted international clients with their daily operations and transactional matters, focusing primarily on alternative asset classes such as real estate, private equity, and credit. During her free time, Murielle enjoys being active.