NayaOne, a Sandbox-as-a-Service platform that helps to match financial institutions with fintechs, has raised $4.7 million. : NayaOne, a Sandbox-as-a-Service platform that helps to match financial institutions with fintechs, has raised $4.7 million. The funding round was led by EJF Capital, with Valley Ventures, the corporate venture capital arm of Valley Bank and Carthona Capital also on board. Valley Bank is the first US adopter of NayaOne's technology, which comprises a sandbox for testing innovative technology from a curated marketplace of vetted fintechs.