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The Custodiex Team

Custodiex was founded by information security and financial services veterans, with the aim of creating a high security cold storage solution for digital assets, that is usable in real-time to meet the needs of modern financial services applications.

Our technical team consists of CISSP and MSc InfoSec accredited security professionals with extensive experience in the fields of cryptography, key management and financial services security.


Martin Gymer – CEO

Martin started his career in finance at O’Connor & Associates, a prestigious derivatives boutique based in Chicago. He established global foreign exchange derivative businesses for seven major international Investment banks in a career spanning 25 years. Martin managed teams of up to 60 in critical financial environments where profitability is the key focus. Passionate about education, Martin is a lecturer on complex risk and derivative instruments and has run his own consulting firm.



Mike Sumner - CTO / CISO

Mike has 30 years of experience working as a technologist with a special focus upon cyber security and cryptography. Mike has deployed significant projects for companies such as Lloyds Bank, Barclays, HSBC, The Co-operative Bank, ABN AMRO Bank, Royal Sun Alliance Scandinavia, Unilever and the UK Central Government.



Kam Patel - COO

Kam Patel is a large programme, Enterprise and IT business manager and architect with over 15 years of leadership experience in designing and delivering innovative business solutions in banking. He has worked in corporate and retail banking with the likes of HSBC, CapitalOne, Barclaycard, Lloyds Banking Group, Paysafe, Scottish Widows as well as with a number of FinTechs, Accelerators and VC’s


Jon Thoresen
Managing Partner


Jon Thoresen - Managing Partner

Jon has 25 years of experience in investment banking. Holding senior management positions at Chemical Bank, J P Morgan Chase, State Street Bank & Trust, Danske Bank. Jon has complete understanding of financial interest rate derivatives and has been the leading market maker in Norwegian rates for over a decade. Jon was UK mixed bridge champion and a junior Norwegian chess champion.

Richard Teideman
Commercial Director


Richard Teideman – Commercial Director

Richard has 20 years’ experience as commercial director and CMO for public companies. Richard has built large scale digital projects for the European Central Bank, GlaxoSmithKline, ING and Standard Chartered Bank. MCIM accredited winner London International Awards, Snapshot OTC Winner Marketing Awards x3, judging panel of the New York Festivals x3 promoted to the New York Festivals Grand Jury

Greg Myers
Managing Partner


Greg Myers - Managing Partner

Greg has 25 years providing resource management & consulting services to the financial industry.
Greg has run an FCA regulated incubation platform for financial funds and a research and analytics business across London, India and Asia. He is now an adviser to fintech and technology companies - Business development & partnerships specialist.

Thomas Soede
Managing Partner/investor


Thomas Soede - Managing Partner/Investor

Thomas is a business leader with decades of experience in the financial industry. He has worked with top 10 financial institutions in building and running large end-to-end digital programs across multiple geographies and business lines with a focus on innovation, quality and functionality. Thomas is an expert at driving cost effective and innovative transformation across capital markets and transaction banking.

Kealan Doyle
Board Director


Kealan Doyle – Board Director

Kealan is CEO and co-founder of Symvan Capital. He has worked with venture capital companies for 15 years. Before his involvement in venture capital investing, Kealan previously lead a structured equity products team at HSBC, and has worked at Deutsche Bank, Merrill Lynch and UBS. Kealan holds degrees from the London school of economics and the University of Toronto.


Nicholas Nicolaides -Board Director/Investor

Nicholas is a Director and co-founder of Symvan Capital. Prior to setting up his own VC businesses, Nicholas worked with AIM brokers and the ECM team at Lehman Brothers, focussing on European Telecom & Media. Prior to that he worked in the TMT Corporate Finance and European Equity Capital Markets teams at BNP Paribas. Nicholas gained a BSc (Hons) in Statistics & Economics from UCL and in a MBA from Imperial College Management School.

Alan Scott
Head of Business Development


Alan Scott – Head of Business Development

Technology builder and seller with senior leadership roles developing electronic FX (eFX) systems for the past 20 years. Involved in all areas from Leadership, Entrepreneur, Sales, Systems Design, Product Development and Implementation of leading pricing and trading systems in FX and Crypto, firstly as Founder of Velsys (33% Deutsche Bank owned), and then latterly in senior management roles at FX Multi Bank Platforms 360T and Integral.

Currently MD EMEA for 24 Exchange, a provider of FX and Crypto Liquidity to the wholesale market as well as CEO/Founder of SmartMoney a developer of Algo based trading solutions.

Member of the ACI Global Committee For Professional Conduct (CFP), the FX Committee (FXC) since 2014 and also Chair of the Crypto Working Group (CWG) since its inauguration in 2019.

David Woolcock
Managing Partner Regulation


David Woolcock – Managing Partner Regulation

Experienced banker and trader. David is the Chair of the Committee for Professionalism with a broad knowledge of consulting for and writing Codes of Conduct in Effective, Ethical, and Fair & Transparent OTC Markets. David is a member of the Market Participants Group, working alongside many central banks globally on the FX Global Code of Conduct. David has extensive experience of e-FX business development & sales and specialties: Cryptocurrencies, Blockchain.

Helen Von Trotsenburg
Operations Manager Director


Helen Von Trotsenburg MInstF - Operations Manager

Helen spent almost 25 years in the Lloyd’s of London Insurance Market. Helen is responsible for all administration and financial client liaison matters in her role as Operations Manager at Custodiex.

And of course – Custodiex would not be possible without the extraordinary technical teams we have who are not mentioned here.