What techniques tooling did you use?
For the new platform, the main techniques I worked with were ASP.NET Core, CQRS/ Event Sourcing, Cosmos DB, Entity Framework Core and XUnit. In particular, Event Sourcing is something where I was able to apply my expertise especially. For adding new cryptocurrencies that they can offer on both the current and new platform is ASP.NET, SQL Server/ Entity Framework, MSTest and Docker. Then, for each cryptocurrency, there are proprietary tools to use.