by Poh Chuen Tan

About us.

It is clearly understood that anyone interested in XVA-Blockchain and the general business plan will want to learn a bit more about the people behind the company.

Our management is a mix of highly experienced industry experts from both the FinTech and Digital Industry. We combine considerable entrepreneurial experience with a background from working in leading positions in renowned companies such as Eurex, Algorithmics, Deutsche Börse and Calypso Technology.

As a founders team we have made the decision to build up the company, because we are convinced that blockchain technology has the potential to massively improve scaleability, transparency and security of financial service offerings.

Join us on our journey to shape the future of a whole industry.


Thomas A. Schwiertz

CEO (Chief Executive Officer)
Managing Founder

Thomas has over 16 years experience working in the financial industry in
various roles across companies such as Algorithmics, Fitch Group or
Eurex Clearing, Deutsche Börse. He is physicist and he has a strong background in statistical finance. Prior to his role at our company Thomas was managing founder at CVA Services GmbH, a German consultancy specialized in risk management and regulatory reporting for banks, asset managers, and insurances. In his career he supported over 20 institutional clients in projects related to risk, reporting, and digitalization.


LinkedIn, Twitter


Frederick Friedman

CCO (Chief Client Officer)

Frederick has over 25 years’ experience in the financial sector both as NASD licensed securities broker (Paine Webber,  Merrill Lynch), and as sales/ account management executive for multiple vendors,  such as Bloomberg,  FIS,  Finastra, Moody’s Analytics, Wolters Kluwer.   He has a strong track record in sales of complex software solutions for derivatives trading, risk management and regulatory reporting. Frederick has extensive knowledge of operational processes and regulatory requirements in banking, insurance and asset management. His  professional mission is to help customers find and deploy intelligent technology to improve efficiency in capital markets operations.



Alexander J. Boos

Head of Legal

Chief Financial Officer (CFO)

Alex is the Head of legal affairs. He has been practicing law for more than 12 years with a degree from Johannes-Gutenberg-University in Mainz. He is also our Chief Financial Officer.


Nina Kaplan

Nina Kaplan

President and CEO, XVA Blockchain North America

Nina Kaplan is a globally recognized business leader, pioneer and entrepreneur with a track record of scaling startups and maximizing profit while controlling costs. Her successes have landed her on the covers of major publications, including NEWSWEEK.

Nina bridges the new world of crypto and the older New York legacy finance and commodities markets. Nina speaks six languages.

In 2009, Nina opened and ran the first trading division for Scholz AG, the second largest recycling company in the world with €5.3 billion in annual revenue. During the economic crisis, she brought the company from startup to over $96 million in revenues by Q2. She started and supervised a facility in China, an office in Hong Kong, and large trading operations in New York and in Germany. Nina launched the company’s first physical and commodity trading operation.

Nina’s first business, Summit Metals Recovery Corp. pioneered PC recycling in the State of New Jersey, and created the world’s first and largest trading business for recyclable circuit board scrap. Nina was among the first in her industry to expand into China and throughout Southeast Asia.



Dr. Dietmar Schnabel

CTO (Chief Technology Officer)

After finishing his Ph.D. in Theoretical Physics at Johann Wolfgang Goethe University in Frankfurt Dietmar spend most of his professional career in finance. Dietmar is a FinTech veteran and he has a strong focus on implementing and customizing trading and risk systems.

He worked for large institutional clients like Deutsche Bank as well as software vendors.

Project execution at Calypso Technology led him throughout Europe and North- and South America.


Rob Crozier

CRO (Chief Risk Officer)
Head of Collateral Management

Rob began his career over 20 years ago working in back-office line and project roles for various investment banks in London and Frankfurt including Barclays Capital, UBS and Deutsche Bank..

In 2008 he joined Calypso Professional Services as a specialist for the Back Office, Accounting and Collateral Management modules.

After leaving Calypso in 2012, Rob took on a leading role in successful Collateral Management implementations at both LCH and UniCredit before moving to Eurex Clearing to work on rolling out its OTC Interest Rates Clearing platform.


Freya L. Schmitfranz

CMO (Chief Marketing Officer)

She has a Bachelor of Arts in Social Sciences and Philosophy. In the course of this she has an interdisciplinary focus and competencies in economic sociology, economics and media studies. She displays great interdisciplinary skills as well as economic knowledge and is able to use her understanding and tools to develop and implement strategies for possible customers.

She also has experience in Media through film, photo and newspaper projects. During her bachelor’s degree, she took over public relations work at an information center at NABU.



Naomi Klaes

CRO (Chief Revenue Officer) and Head of HR

As Head of HR Naomi is for example responsible for hiring processes and improving employee engagement. As CRO Naomi is, in general, responsible for growing the companies revenue. Besides these responsibilities she is studying law at Johannes-Gutenberg-University in Mainz.


Ernesto Sau

Head of Regulatory Affairs

Ernesto is a capital markets lawyer and located in Luxembourg. He is a finacial sector project professional with over 25 years of experience in securities services and project delivery working for companies like Clearstream. He implemented a variety of complex projects in accordance with changing rules and regulations, eliminated organizational inefficiencies, introduced cost reduction initiatives, and managed budgets of €150M+. Ernesto joined XVA Blockchain in 2022 and he is our representative at the ISDA (International Swaps and Derivatives Association).


Funda Toprakci

Head of Regulatory Reporting

Funda has over 15 years of experience in the financial sector, consulting big investment banks with worldwide subsidiaries, branches and representative offices and state banks, asset managers and custodians, and a sound professional experience with one of the Big4. She has a strong track record in asset management, especially in public and special funds, as well as investment fund law and tax law.

Funda has extensive knowledge of business requirements and operational processes in regulatory reporting, having specialized in statistical and tax reporting in banking and asset management. Her professional mission is to help clients find and deploy intelligent technology to improve efficiency in banking and capital markets operations.

Our Advisors

Every team works better with a group of advisors to support them.
They are proven experts in their line of work and provide valuable input.


Prof. Dr. Christian Fries

Mathematisches Institut Universität München


LinkedIn, Twitter


Jochen Diel

Industry Expert

Manager positions at Oliver Wyman, Deutsche Bank, J D&C

LinkedIn, Twitter


Ales Tomazin, Ph.D.

Industry Expert & Advisor to Crypto Companies

Ales’ main areas of daily activities are ERM, capital allocation, Solvency II, IFRS 17 and bringing business logic to start-ups in the process of pre and post ICO. He holds a PhD in Actuarial Science, has more than 15 years experience in insurance sector (working for more than 10 insurance companies) and is a known member in the blockchain community.



Hendrik Kempfert

Industry Expert & Serial Entrepreneur

Manager positions at Adform, virtual minds AG, Yieldlab AG and many more. Currently he supports the Logistics Summit as a Sales Director. Hendrik’s skill set includes entrepreneurship, GDPR, Media Buying Solutions, Programmatic Buying, DMP, DSP, SSP, RTB, Crosse-Device, Device Recognition, Profiling, Adserving, Targeting, ReTargeting, Tracking, Streaming, RichMedia, GeoTargeting, Online Marketing, and knowledge behind clicks.



Sylvia Trimborn-Ley

Experienced senior manager from international banking industry & founder

Sylvia offers senior manager experience from international banks, more than 20 years professional experience in audit, risk and compliance management. Currently she consults as founder of BlockDeMar GmbH DeFi companies and IT service providers on business process automation, transformation management and group wide risk assessments. Her focus is on risk & compliance management systems, e.g anti-financial crime programs, Know your client / know your partner procedures, outsourcing control, MaRisk implementation.
Sylvia’s skill set includes entrepreneurship, non-financial & sanctions risk management, lean process design, robotics process automation, due diligence handling and post merger integration.
Sylvia graduated in business administration (Diplom-Kauffrau), is an information systems auditor certified by the US ISACA foundation and holds a Six Sigma belt. She mentors in Frankfurt School of Finance & Management’s DLT talent program, empowering female talents to leadership in the blockchain, crypto assets and DLT field (