MainStreet Bancshares, Inc. announced that Todd Youngren joined the Bank's Payment Service Solutions Group as a Senior Vice President and Client Management Director. Mr. Youngren brings expertise in all facets of payments, including accounting and finance, financial collaboration, as well as designing and implementing technology solutions. He also brings complex treasury management experience to the Payments Group. Mr. Youngren's career experience spans both sides of the payment spectrum – in some instances as a payment service provider and in others as a commercial consumer of payment services.