B Online was established when Zahariev and his business partner Luke Calitz were in university. Since then it has grown into a full-service digital agency, which provides a variety of different businesses serving a variety of different businesses by allowing them access to the digital assets they need to succeed in the digital space.

Zahariev's passion for developing small businesses has garnered international recognition. This is exemplified by B Online's partnership with one of Europe's biggest e-commerce platforms, and their continued support of his latest venture, HiCarByeCar, a tech platform which matches car sellers and dealers to ensure consumers are able to achieve the highest price when selling their cars.