Who is behind Nexo?

Who exactly is the mastermind behind Nexo? Could you please elaborate on the founders and their backgrounds? I'm particularly interested in knowing about their expertise in the field of cryptocurrency and finance, as well as their vision for Nexo. Additionally, could you provide some insights into the team behind Nexo? How many members are there, and what are their respective roles and responsibilities? Lastly, how do you ensure that Nexo remains secure and trustworthy in the volatile cryptocurrency market?